openfang-rail
REMOTE · HCRB.IN
Deterministic banking, LEI, VAT, SWIFT & compliance checks via MCP with signed XDR-1 receipts.
Available components
Last scanned (2 hours ago)
Scores higher than 94% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security69
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability95
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 5790 tokens (~98/item across 59 items; 57 tools + 2 resources), lean.Pass
- Tools include usage examples.Pass
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 57 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 59 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 26 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “batch_validate” rewrote its description, which is the text the model reads security
- Tool “block_info” rewrote its description, which is the text the model reads security
- Tool “pre_disbursement_guard” rewrote its description, which is the text the model reads security
- Tool “sanctions_address_screen” rewrote its description, which is the text the model reads security
- Schema quality: 2387 → 5790 ▼ functional
- Schema quality: good → excellent functional
- New tool “cnpj_check” functional
- New tool “uscc_check” functional
- New tool “aba_routing_check” functional
- New tool “abn_check” functional
- New tool “aci_trust_lookup” functional
- New tool “africa_supplier_check” functional
- New tool “china_supplier_check” functional
- New tool “company_number_format” functional
- New tool “create_b2b_invoice” functional
- New tool “csp_commitment_create” functional
- New tool “e164_check” functional
- New tool “ean13_check” functional
- New tool “ein_format_check” functional
- New tool “get_b2b_invoice” functional
- New tool “gulf_supplier_check” functional
- New tool “isin_check” functional
- New tool “iso20022_to_x402_intent” functional
- New tool “iso20022_validate” functional
- New tool “iso4217_currency_check” functional
- New tool “japan_corp_check” functional
- New tool “japan_supplier_check” functional
- New tool “kra_pin_check” functional
- New tool “latam_supplier_check” functional
- New tool “pan_format_check” functional
- New tool “reconcile” functional
- New tool “rent_deposit_guard” functional
- New tool “rental_listing_risk” functional
- New tool “rental_verdict” functional
- New tool “rfc_check” functional
- New tool “sedol_check” functional
- New tool “simulate_spend_sentinel” functional
- New tool “uae_trn_check” functional
- New tool “upi_vpa_check” functional
- 23 Oct 26 +10
- Stability: fail → pass ▲ security
- 19 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Schema quality: excellent → good functional
- 18 Oct 26 +19
- A breaking change shipped without a version bump: still 1.3.0 ▼ security
- Tool “reconcile” was removed ▼ security
- Tool “screen_entity” was removed ▼ security
- Tool “solvency_check” was removed ▼ security
- Tool “verify_id” was removed ▼ security
- Authorization: unverified → partial ▲ security
- Schema quality: 543 → 2374 ▼ functional
- Tool coverage: 0% → 100% ▲ functional
- Schema quality: fail → pass ▲ functional
- Schema quality: fair → excellent functional
- New tool “gstin_check” functional
- New tool “balance_check” functional
- New tool “batch_validate” functional
- New tool “block_info” functional
- New tool “calculate_fx_savings” functional
- New tool “check_price” functional
- New tool “clean_markdown_scraper” functional
- New tool “context_distill” functional
- New tool “crypto_ticker” functional
- New tool “erc20_balance” functional
- New tool “fx_spot_price_oracle” functional
- New tool “iban_check” functional
- New tool “ifsc_check” functional
- New tool “india_supplier_check” functional
- New tool “instant_json_schema_verifier” functional
- New tool “lei_check” functional
- New tool “pre_disbursement_guard” functional
- New tool “receipt_verify” functional
- New tool “sanctions_address_screen” functional
- New tool “swift_bic_check” functional
- New tool “token_contract_risk” functional
- New tool “tx_activity” functional
- New tool “vat_mod97_check” functional
- New tool “vendor_onboarding_pack” functional
- 16 Oct 26 −14
- Authorization: partial → unverified ▼ security
- A breaking change shipped without a version bump: still 1.3.0 ▼ security
- Tool “balance_check” was removed ▼ security
- Tool “batch_validate” was removed ▼ security
- Tool “block_info” was removed ▼ security
- Tool “calculate_fx_savings” was removed ▼ security
- Tool “check_price” was removed ▼ security
- Tool “clean_markdown_scraper” was removed ▼ security
- Tool “context_distill” was removed ▼ security
- Tool “crypto_ticker” was removed ▼ security
- Tool “erc20_balance” was removed ▼ security
- Tool “fx_spot_price_oracle” was removed ▼ security
- Tool “gstin_check” was removed ▼ security
- Tool “iban_check” was removed ▼ security
- Tool “ifsc_check” was removed ▼ security
- Tool “india_supplier_check” was removed ▼ security
- Tool “instant_json_schema_verifier” was removed ▼ security
- Tool “lei_check” was removed ▼ security
- Tool “pre_disbursement_guard” was removed ▼ security
- Tool “receipt_verify” was removed ▼ security
- Tool “sanctions_address_screen” was removed ▼ security
- Tool “swift_bic_check” was removed ▼ security
- Tool “token_contract_risk” was removed ▼ security
- Tool “tx_activity” was removed ▼ security
- Tool “vat_mod97_check” was removed ▼ security
- Tool “vendor_onboarding_pack” was removed ▼ security
- Tool coverage: 100% → 0% ▼ functional
- Schema quality: pass → fail ▼ functional
- Schema quality: 2258 → 543 ▲ functional
- First check of Schema quality: 100 functional
- Schema quality: excellent → fair functional
- New resource “Complete Validator Catalog (65+ Global Formats)” functional
- New resource “XDR-1 182-Byte Binary Preimage & 65B Ed25519 Passport Specification” functional
- New tool “reconcile” functional
- New tool “screen_entity” functional
- New tool “solvency_check” functional
- New tool “verify_id” functional
- 15 Oct 26 −4
No change was recorded against any check on this day. Stability & Change Management went from 29 to 0.
- 10 Oct 26 +4
- The server rewrote its instructions, which are the text every model session reads security
- Tool “sanctions_address_screen” rewrote its description, which is the text the model reads security
- Schema quality: 1283 → 2258 ▼ functional
- Tool “sanctions_address_screen” changed its title: OFAC SDN & Sanctions List Edge Screener → Address Snapshot & Operator Policy Comparison cosmetic
- 4 Oct 26 +1
- HTTPS: unverified → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “batch_validate” rewrote its description, which is the text the model reads security
- Tool “iban_check” rewrote its description, which is the text the model reads security
- Tool “ifsc_check” rewrote its description, which is the text the model reads security
- Tool “lei_check” rewrote its description, which is the text the model reads security
- Tool “pre_disbursement_guard” rewrote its description, which is the text the model reads security
- Tool “swift_bic_check” rewrote its description, which is the text the model reads security
- Tool “vat_mod97_check” rewrote its description, which is the text the model reads security
- Tool “vendor_onboarding_pack” rewrote its description, which is the text the model reads security
- Schema quality: fail → pass ▲ functional
- “vat_mod97_check” reworded the description of “vat_number” cosmetic
- Tool “batch_validate” changed its title: Batch Identifier Pipeline (up to 50 checks, 1 payment) → Batch Identifier Checks (up to 50 items) cosmetic
- Tool “iban_check” changed its title: IBAN Check & Wire Fraud Shield → IBAN Structure and Checksum Check cosmetic
- Tool “ifsc_check” changed its title: IFSC Check (India NEFT/RTGS) → IFSC Format Check cosmetic
- Tool “lei_check” changed its title: Legal Entity Identifier (LEI) KYB Check → LEI Structure and Checksum Check cosmetic
- Tool “pre_disbursement_guard” changed its title: Pre-Disbursement Due Diligence Guard (Check Before You Send) → Counterparty Risk Indicators cosmetic
- Tool “swift_bic_check” changed its title: SWIFT/BIC Structure & Country Code Check → SWIFT/BIC Structure Check cosmetic
- Tool “vat_mod97_check” changed its title: VAT Check & Tax Invoicing Shield → Belgian VAT MOD-97 Check cosmetic
- Tool “vendor_onboarding_pack” changed its title: All-in-One Vendor Onboarding & Clearing Shield → Vendor Identifier Check Pack cosmetic
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://hcrb.in/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=hcrb.in | CN=WE1,O=Google Trust Services,C=US | 24 Oct 2026 | 22 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | ee6f9256a37684ee0e247980a22b2cab |
| SANs: hcrb.in, staging.hcrb.in, *.staging.hcrb.in | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of hcrb.in. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| in. | present | 10094 | 13 | Verified |
| hcrb.in. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=(), browsing-topics=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://hcrb.in/mcp | Verified | 200 | |
| http (plaintext) | http://hcrb.in/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
aba_routing_check ABA Routing Number Check (US Fedwire/ACH) ~97
Validate a US ABA routing number by its (3,7,1)-weight mod-10 Fedwire/ACH checksum. Catches mistyped or invalid routing numbers before payment; does NOT prevent transfer reversals or establish the recipient. Returns signed XDR-1 receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| aba_routing | string | – | 9-digit US bank routing number. |
| routing | string | – | 9-digit US bank routing number (alias). |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"aba_routing":"021000021"}abn_check ABN Check (Australia) ~57
Validate an Australian Business Number by its mod-89 checksum (11 digits). Required before invoice payment to Australian contractors. Returns signed XDR-1 receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| abn | string | yes | 11-digit Australian Business Number; spaces allowed. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"abn":"51 824 753 556"}aci_trust_lookup ACI-1 Agent Credit & Trust Rating Lookup ~205
Deterministic agent trust scoring and non-custodial unsettled exposure advisory evaluation (ACI-1). Quantifies counterparty grade (T0-T3), historical success rate, and maximum suggested settlement exposure without uncollateralized lending or float.
| Name | Type | Req | Description |
|---|---|---|---|
| dispute_loss_rate | number | – | Historical dispute loss rate 0.0 to 1.0 |
| first_seen_days | number | – | Days since first active on-chain settlement |
| role | string | – | Agent role: 'payer' or 'seller' (default 'payer') |
| settled_calls_90d | number | – | Number of settled transactions in the past 90 days |
| settlement_success_rate | number | – | Historical settlement success rate 0.0 to 1.0 |
| sponsor_attestations | array | – | Array of signed sponsorship edges |
| subject | string | yes | Agent wallet address (0x...) or canonical ANS identifier (c402:...) to evaluate |
| Name | Type | Req | Description |
|---|---|---|---|
| evidence | object | – | – |
| ok | boolean | yes | – |
| policy_notice | string | – | – |
| receipt_digest | string | – | – |
| score_bp | number | yes | – |
| standard | string | yes | – |
| subject | string | yes | – |
| tier | string | yes | – |
| unsettled_exposure_hint_minor | string | – | – |
{"first_seen_days":120,"settled_calls_90d":1500,"settlement_success_rate":0.999,"subject":"0x1111111111111111111111111111111111111111"}africa_supplier_check Africa Supplier Verification Pack ~78
One call, one receipt: Kenya KRA PIN + settlement IBAN + SWIFT/BIC. Deterministic structural checks for East African trade corridors.
| Name | Type | Req | Description |
|---|---|---|---|
| iban | string | – | Settlement IBAN (optional) |
| kra_pin | string | – | KRA PIN (optional) |
| swift | string | – | SWIFT/BIC (optional) |
| Name | Type | Req | Description |
|---|---|---|---|
| all_valid | boolean | yes | – |
| checked_count | number | yes | – |
| corridor | string | – | – |
| next_steps | string | – | – |
| results | array | – | – |
| scope | string | – | – |
| tool | string | – | – |
| verdict | string | – | – |
{"iban":"GB82WEST12345698765432","kra_pin":"P051234567X","swift":"BARCKENX"}balance_check Base Account Balance Snapshot ~76
Native ETH and one ERC-20 balance (default USDC) for an address on Base, raw and formatted. Result carries a signed receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | EVM address, 0x-prefixed. |
| token_address | string | – | ERC-20 token contract address (optional; defaults to USDC on Base). |
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | – |
| native | object | – | – |
| reason | string | – | – |
| retryable | boolean | – | – |
| scope | string | – | – |
| token | object | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"address":"0xc59c85e661d34084a7769f955d17fd38254a6235"}batch_validate Batch Identifier Checks (up to 50 items) ~116
Validate up to 50 tax, bank and legal-entity identifiers (IBAN, LEI, VAT, SWIFT/BIC, ABA routing, EIN, IFSC, ABN, GSTIN, ISIN, SEDOL, EAN-13, ISBN, E.164 or Luhn checks) in one batch request. Each result states its scope. Compare the current batch quote with individual quotes; savings depend on batch size.
| Name | Type | Req | Description |
|---|---|---|---|
| items | array | yes | List of {tool, value} checks (max 50). |
| Name | Type | Req | Description |
|---|---|---|---|
| count | number | yes | – |
| invalid_count | number | – | – |
| results | array | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid_count | number | – | – |
{"items":[{"tool":"iban-check","value":"GB82 WEST 1234 5698 7654 32"},{"tool":"lei-check","value":"529900T8BM49AURSDO55"},{"tool":"vat-mod97-check","value":"BE0417497106"}]}block_info Base Block Header Info ~75
Base chain (8453) block header data: block number, timestamp, transaction count and base fee for any block. Result carries a signed receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| block | string | – | Block number as hex (0x…) or decimal, or a tag (latest/earliest/pending/finalized/safe); defaults to latest. |
| Name | Type | Req | Description |
|---|---|---|---|
| base_fee_gwei | number | – | – |
| block | string | – | – |
| block_number | number | yes | – |
| reason | string | – | – |
| retryable | boolean | – | – |
| scope | string | – | – |
| timestamp | number | – | – |
| timestamp_iso | string | – | – |
| tool | string | – | – |
| tx_count | number | – | – |
| valid | boolean | yes | – |
{"block":"latest"}calculate_fx_savings Calculate cross-border FX savings ~152
Arithmetic comparison of a USDC settlement against comparator percentages YOU supply (bank_fee_pct, custodial_fee_pct) across 14 global fiat currencies. The comparators are assumptions, not measurements of any bank or provider; no protocol fee is deducted on this rail.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | – | Gross invoice settlement volume in USD/USDC (alias). |
| amount_usd | number | – | Gross invoice settlement volume in USD/USDC (alias). |
| amount_usdc | number | – | Gross invoice settlement volume in USD/USDC. |
| currency | string | – | Target currency for local comparison (e.g. EUR, GBP, BRL, INR, ARS, PHP, NGN, SGD). |
| Name | Type | Req | Description |
|---|---|---|---|
| amount_usdc | number | yes | – |
| code402_protocol_fee_usd | number | – | – |
| currency | string | – | – |
| deel_fee_usd | number | – | – |
| legacy_swift_fee_usd | number | – | – |
| local_currency | object | – | – |
| pct_retained | number | yes | – |
| retained_savings_usd | number | yes | – |
| scope | string | – | – |
| tool | string | – | – |
{"amount_usdc":50000,"currency":"BRL"}check_price Zero-cost price index and gasless x402 quote generator ~117
Instant zero-cost pricing hook for code402 tools. Returns the live price, an opaque quote_id, TTL, and the settlement URL. Free forever — feeds the price index into an agent planner's context without creating any financial obligation. If the planner acts on the quote, it hits the settlement_url with an EIP-3009 signed voucher.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | – | Optional batch count or volume units (default 1) |
| tool | string | yes | Target tool name (e.g. 'iban-check', 'vendor-onboarding-pack') |
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | – |
| price | number | yes | – |
| quote_id | string | yes | – |
| scope | string | – | – |
| settlement_url | string | yes | – |
| tool | string | yes | – |
| ttl_ms | number | – | – |
| valid | boolean | yes | – |
{"amount":1,"tool":"iban-check"}china_supplier_check China Supplier Verification Pack ~84
One call, one receipt: USCC + settlement IBAN + SWIFT/BIC for a Chinese counterparty. Deterministic structure and checksum validation with explicit scope per identifier.
| Name | Type | Req | Description |
|---|---|---|---|
| iban | string | – | Settlement IBAN (optional) |
| swift | string | – | SWIFT/BIC (optional) |
| uscc | string | – | Unified Social Credit Code (optional) |
| Name | Type | Req | Description |
|---|---|---|---|
| all_valid | boolean | yes | – |
| checked_count | number | yes | – |
| corridor | string | – | – |
| next_steps | string | – | – |
| results | array | – | – |
| scope | string | – | – |
| tool | string | – | – |
| verdict | string | – | – |
{"iban":"GB82WEST12345698765432","swift":"DEUTDEFF","uscc":"91350100M000100Y43"}clean_markdown_scraper Clean markdown scraper ~101
Fetch a public web page by URL (or take your HTML) and return Markdown plus headings. No JavaScript rendering. Result carries a signed receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| html | string | – | Raw HTML string to convert instead of fetching a URL (max 1 MiB). Provide exactly one of url or html. |
| url | string | – | Public http(s) page to fetch (ports 80/443 only). Provide exactly one of url or html. |
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | – | – |
| fetched_on | string | – | – |
| headings | array | – | – |
| markdown | string | yes | – |
| reason | string | – | – |
| retryable | boolean | – | – |
| scope | string | – | – |
| source | object | – | – |
| tool | string | – | – |
| valid | boolean | – | – |
| wordCount | number | yes | – |
{"url":"https://example.com/"}cnpj_check Brazil CNPJ Check (Cadastro Nacional da Pessoa Jurídica) ~83
Validate Brazilian corporate tax ID (CNPJ) with official dual mod-11 check digits. Required for Brazilian B2B payments, PIX verification, and vendor due diligence. Returns signed XDR-1 receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| cnpj | string | yes | 14-digit Brazilian CNPJ; punctuation allowed (e.g. 00.000.000/0001-91). |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"cnpj":"00.000.000/0001-91"}company_number_format UK Company Number Format Check ~50
Check supported UK company-number syntax. No Companies House lookup, entity-existence check or active-registration verification.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | 8 digits, or 2 letters + 6 digits. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"company_number":"12345678"}context_distill Context distill ~75
Deterministic text digest: word count, top-5 most frequent meaningful words (stop words excluded), first sentence, and a keccak-256 content hash. Pure function — no external calls, no ML.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Arbitrary text to distill (any length; hashing is over the exact input). |
| Name | Type | Req | Description |
|---|---|---|---|
| content_hash | string | – | – |
| first_sentence | string | – | – |
| meaningful_word_count | number | – | – |
| scope | string | – | – |
| tool | string | – | – |
| top_words | array | – | – |
| valid | boolean | yes | – |
| word_count | number | yes | – |
{"text":"The landlord demanded the deposit before the viewing. The deposit was paid before any viewing of the property."}create_b2b_invoice Create B2B contractor invoice ~140
Create a merchant-direct Base token invoice. New automated payments require a durable EOA authorization journal and a configured provider. No active protocol fee; no generic bank-wire authority, independent delivery or contract-wallet guarantee.
| Name | Type | Req | Description |
|---|---|---|---|
| amount_usdc | number | yes | Invoice total in USDC (e.g. 50000). |
| client_name | string | – | Client enterprise organization name (optional). |
| memo | string | – | Engagement scope / milestone description (optional). |
| merchant | string | yes | Beneficiary contractor Base EVM wallet address (0x...). |
| referrer | string | – | Optional attribution reference. Referral payouts and protocol fees are not active. |
| Name | Type | Req | Description |
|---|---|---|---|
| amount_usdc | number | – | – |
| cart_hash | string | – | – |
| invoice_id | string | yes | – |
| invoice_url | string | yes | – |
| merchant | string | – | – |
| pay_url | string | yes | – |
| protocol_fee_usdc | number | – | – |
| scope | string | – | – |
| status | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"amount_usdc":50000,"client_name":"Apex AI","memo":"Sprint #14 Milestones","merchant":"0xc59c85e661d34084a7769f955d17fd38254a6235"}crypto_ticker Crypto ticker ~69
Spot USD price for a crypto ticker or CoinGecko id from public price feeds, cached 60 s. Result carries a signed receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| symbol | string | yes | Ticker symbol (btc, eth, sol, …) or a CoinGecko asset id (bitcoin, ethereum, …). |
| Name | Type | Req | Description |
|---|---|---|---|
| cached | boolean | – | – |
| coingecko_id | string | – | – |
| currency | string | – | – |
| fetched_at | string | – | – |
| price_usd | number | – | – |
| reason | string | – | – |
| retryable | boolean | – | – |
| scope | string | – | – |
| symbol | string | yes | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"symbol":"btc"}csp_commitment_create CSP-1 Confidential Terms Commitment & Stealth Announce ~143
Generates cryptographic commitments to commercial terms and formats ERC-5564 dual-key stealth address announcements (CSP-1) for invoice-scale B2B payments on Base L2.
| Name | Type | Req | Description |
|---|---|---|---|
| ephemeral_pubkey | string | – | Optional ephemeral public key for ERC-5564 announcement |
| invoice_object | object | yes | Structured invoice or commercial agreement object to commit to |
| salt_hex | string | – | Optional 32-byte salt (0x...). If omitted, cryptographically derived |
| stealth_recipient | string | – | Optional Base L2 stealth recipient address for announcement |
| view_tag | string | – | Optional 1-byte hex view tag (0xNN) |
| Name | Type | Req | Description |
|---|---|---|---|
| announcement | object | – | – |
| canonical_jcs | string | – | – |
| invoice_commitment | string | yes | – |
| ok | boolean | yes | – |
| salt_hex | string | yes | – |
| standard | string | yes | – |
{"invoice_object":{"amount_usdc":5000,"invoice_id":"INV-402","line_items":[{"qty":10,"sku":"H100_HR"}]}}e164_check E.164 International Phone Check ~67
Validate a phone number's E.164 structure (+CC, 8-15 digits, no leading zero) before dispatching SMS alerts or OTPs. Returns signed XDR-1 receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| phone | string | yes | International phone number, e.g. +14155552671. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"phone":"+14155552671"}ean13_check EAN-13 check ~54
Validate an EAN-13 barcode by its mod-10 checksum (odd positions x1, even positions x3).
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | 13-digit EAN-13 barcode; spaces/dashes allowed. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"code":"5901234123457"}ein_format_check EIN Format Check (US) ~59
Validate US Employer Identification Number FORMAT (NN-NNNNNNN). Use during US business counterparty KYB verification. Returns signed XDR-1 receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| ein | string | yes | US EIN, 9 digits; dashes/spaces allowed. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"ein":"12-3456789"}erc20_balance ERC-20 Token Balance Snapshot ~86
Raw and formatted ERC-20 balanceOf for an address on Base, with decimals read from the token. Result carries a signed receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Holder EVM address, 0x-prefixed. |
| decimals | number | – | Token decimals override (optional). |
| token_address | string | yes | ERC-20 token contract address, 0x-prefixed. |
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | – |
| balance | number | – | – |
| balance_raw | string | – | – |
| decimals | number | – | – |
| decimals_source | string | – | – |
| reason | string | – | – |
| retryable | boolean | – | – |
| scope | string | – | – |
| token_address | string | yes | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"address":"0xc59c85e661d34084a7769f955d17fd38254a6235","token_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}fx_spot_price_oracle FX spot price oracle ~83
Reference fiat and stablecoin conversion rate from a static table, not a live feed. Returns rate and inverse; result carries a signed receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| base | string | yes | Base currency symbol (e.g. USDC, EUR, GBP, JPY). |
| quote | string | yes | Quote currency symbol (e.g. USD, EUR, JPY). |
| Name | Type | Req | Description |
|---|---|---|---|
| inverse | number | yes | – |
| pair | string | yes | – |
| rate | number | yes | – |
| source | string | yes | – |
| timestamp | number | yes | – |
{"base":"EUR","quote":"USD"}get_b2b_invoice Get B2B invoice status ~78
Read public recorded invoice status and held-operation next action. Private records and credentials require a separate fresh read-only signature from the durably confirmed original payer; URLs and payment vouchers grant no read authority.
| Name | Type | Req | Description |
|---|---|---|---|
| invoice_id | string | yes | Unique invoice identifier, e.g. inv_a1b2c3d4e5f6. |
| Name | Type | Req | Description |
|---|---|---|---|
| amount_usdc | number | – | – |
| invoice_id | string | yes | – |
| merchant | string | – | – |
| private_record_requires | string | – | – |
| private_record_url | string | – | – |
| scope | string | – | – |
| settled_at | number | – | – |
| status | string | yes | – |
| tool | string | – | – |
| tx_hash | string | – | – |
| valid | boolean | yes | – |
{"invoice_id":"inv_example1234"}gstin_check GSTIN check (India) ~58
Validate an Indian GSTIN by structure (2-digit state code + PAN + entity code + 'Z') and its mod-36 cross-sum checksum.
| Name | Type | Req | Description |
|---|---|---|---|
| gstin | string | yes | 15-character Indian Goods and Services Tax Identification Number. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"gstin":"27AAPFU0939F1ZV"}gulf_supplier_check Gulf Supplier Verification Pack ~84
One call, one receipt: UAE TRN + settlement IBAN + SWIFT/BIC. Deterministic structure validation for Gulf trade corridors, scope stated per identifier.
| Name | Type | Req | Description |
|---|---|---|---|
| iban | string | – | Settlement IBAN (optional) |
| swift | string | – | SWIFT/BIC (optional) |
| trn | string | – | UAE TRN (15 digits, optional) |
| Name | Type | Req | Description |
|---|---|---|---|
| all_valid | boolean | yes | – |
| checked_count | number | yes | – |
| corridor | string | – | – |
| next_steps | string | – | – |
| results | array | – | – |
| scope | string | – | – |
| tool | string | – | – |
| verdict | string | – | – |
{"iban":"AE070331234567890123456","swift":"EBILAEAD","trn":"100123456700003"}iban_check IBAN Structure and Checksum Check ~45
Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of fraud.
| Name | Type | Req | Description |
|---|---|---|---|
| iban | string | yes | IBAN to validate; spaces allowed. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"iban":"GB82 WEST 1234 5698 7654 32"}ifsc_check IFSC Format Check ~50
Check the 11-character Indian IFSC format, including its fifth-character zero. No bank-branch registry lookup or account verification.
| Name | Type | Req | Description |
|---|---|---|---|
| ifsc | string | yes | 11-character Indian Financial System Code. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"ifsc":"HDFC0000123"}india_supplier_check India Supplier Verification Pack ~119
One call, one receipt: GSTIN + PAN + UPI VPA + IFSC for an Indian counterparty. Four deterministic structural checks, each stating its own scope. Built for cross-border procurement where the buyer is an agent that cannot open an INR account.
| Name | Type | Req | Description |
|---|---|---|---|
| gstin | string | – | GSTIN (15 chars, optional) |
| ifsc | string | – | IFSC bank code (optional) |
| pan | string | – | PAN (10 chars, optional) |
| vpa | string | – | UPI VPA handle (optional) |
| Name | Type | Req | Description |
|---|---|---|---|
| all_valid | boolean | yes | – |
| checked_count | number | yes | – |
| corridor | string | – | – |
| next_steps | string | – | – |
| results | array | – | – |
| scope | string | – | – |
| tool | string | – | – |
| verdict | string | – | – |
{"gstin":"27AAPFU0939F1ZV","ifsc":"HDFC0001234","pan":"AAACP1234M","vpa":"merchant@okhdfcbank"}instant_json_schema_verifier Instant JSON schema verifier ~61
Validate JSON data payloads against schema definitions. Preflighted for agent tool call pipelines.
| Name | Type | Req | Description |
|---|---|---|---|
| data | object | yes | The JSON data object to validate against the schema. |
| schema | object | yes | The JSON schema object with expected properties and types. |
| Name | Type | Req | Description |
|---|---|---|---|
| errors | array | yes | – |
| execution_ms | number | yes | – |
| valid | boolean | yes | – |
{"data":{"name":"Apex Agent","version":2},"schema":{"properties":{"name":{"type":"string"},"version":{"type":"number"}},"required":["name","version"]}}isin_check ISIN check ~71
Validate an ISIN (ISO 6166) by structure and Luhn mod-10 check digit over the A=10…Z=35 converted string.
| Name | Type | Req | Description |
|---|---|---|---|
| isin | string | yes | 12-character ISIN: 2-letter country code + 9 alphanumerics + check digit; spaces allowed. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"isin":"US0378331005"}iso20022_to_x402_intent BAP-1 ISO 20022 to x402 Intent Mapper ~140
Translates validated ISO 20022 payment instructions (pain.001 / pacs.008) into deterministic EIP-712 payment-intent templates for autonomous x402 Base L2 USDC settlement (BAP-1). Zero custody, no fiat leg.
| Name | Type | Req | Description |
|---|---|---|---|
| chain_id | number | – | Target chain ID (default 8453 for Base) |
| counterparty_wallet_directory | object | – | Enterprise IBAN -> 0x Base L2 wallet address map |
| instruction | object | yes | Validated BAP-1 payment instruction object |
| seller_pay_to_address | string | – | Fallback recipient Base L2 address |
| Name | Type | Req | Description |
|---|---|---|---|
| intent_template | object | yes | – |
| notice | string | – | – |
| ok | boolean | yes | – |
| standard | string | yes | – |
| status | string | yes | – |
{"instruction":{"creditor":{"iban":"DE77100100100123456789"},"debtor":{"iban":"DE89370400440532013000"},"end_to_end_id":"E2E-1001","instructed_amount":{"amount_minor":"250000000","amount_str":"250.00","currency":"USD"}},"seller_pay_to_address":"0xc59c85e661d34084a7769f955d17fd38254a6235"}iso20022_validate BAP-1 ISO 20022 Banking Message Validator ~157
Deterministic validation for institutional ISO 20022 XML/JSON payment messages (pain.001 credit transfer, pacs.008 customer credit, camt.053 bank statement) with XML DOCTYPE security guards, BigInt CtrlSum decimal sums, and ISO 13616 / 9362 / 17442 checksums (BAP-1).
| Name | Type | Req | Description |
|---|---|---|---|
| format | string | – | 'xml' or 'json' (default auto-detected) |
| namespace | string | – | Expected ISO 20022 schema namespace (e.g. 'pain.001.001.09') |
| raw_payload | string | yes | Raw ISO 20022 XML or JSON message text |
| transactions | array | – | Structured transactions array for JSON validation |
| Name | Type | Req | Description |
|---|---|---|---|
| ctrl_sum_minor | string | – | – |
| findings | array | – | – |
| message_id | string | – | – |
| namespace | string | – | – |
| ok | boolean | yes | – |
| receipt_digest | string | – | – |
| standard | string | yes | – |
| tx_count | number | – | – |
| valid | boolean | yes | – |
{"raw_payload":"\u003cDocument xmlns=\"urn:iso:std:iso:20022:tech:xsd:pain.001.001.09\"\u003e\u003cCstmrCdtTrfInitn\u003e\u003cGrpHdr\u003e\u003cMsgId\u003eMSG-2026-001\u003c/MsgId\u003e\u003cNbOfTxs\u003e1\u003c/NbOfTxs\u003e\u003cCtrlSum\u003e100.00\u003c/CtrlSum\u003e\u003c/GrpHdr\u003e\u003cPmtInf\u003e\u003cCdtTrfTxInf\u003e\u003cAmt\u003e\u003cInstdAmt Ccy=\"USD\"\u003e100.00\u003c/InstdAmt\u003e\u003c/Amt\u003e\u003cCdtrAgt\u003e\u003cFinInstnId\u003e\u003cBICFI\u003eDEUTDEDDFXX\u003c/BICFI\u003e\u003c/FinInstnId\u003e\u003c/CdtrAgt\u003e\u003cCdtrAcct\u003e\u003cId\u003e\u003cIBAN\u003eDE89370400440532013000\u003c/IBAN\u003e\u003c/Id\u003e\u003c/CdtrAcct\u003e\u003c/CdtTrfTxInf\u003e\u003c/PmtInf\u003e\u003c/CstmrCdtTrfInitn\u003e\u003c/Document\u003e"}iso4217_currency_check ISO 4217 Currency Standard Check & Settlement Mapping ~114
Validate 3-letter alpha or 3-digit numeric currency codes against ISO 4217 standard. Returns minor unit decimals, symbol, official name, countries, and onchain Base L2 settlement token mapping (USDC/EURC).
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | yes | 3-letter ISO 4217 code (e.g. USD, EUR, JPY, CNY, BRL, KES, MXN) or 3-digit numeric code (e.g. 840, 978, 392). |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"currency":"EUR"}japan_corp_check Japan Corporate Number Check (法人番号 - Houjin Bangou) ~74
Validate 13-digit Japanese Corporate Number assigned by the National Tax Agency using Mod-9 check digit algorithm. Required for Japanese B2B SaaS and enterprise billing. Returns signed XDR-1 receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| number | string | yes | 13-digit Japanese Corporate Number (e.g. 1180301018771). |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"number":"1180301018771"}japan_supplier_check Japan Supplier Verification Pack ~66
One call, one receipt: 13-digit Corporate Number + settlement IBAN for a Japanese counterparty. Deterministic check digits, explicit scope.
| Name | Type | Req | Description |
|---|---|---|---|
| corporate_number | string | – | 13-digit Corporate Number (optional) |
| iban | string | – | Settlement IBAN (optional) |
| Name | Type | Req | Description |
|---|---|---|---|
| all_valid | boolean | yes | – |
| checked_count | number | yes | – |
| corridor | string | – | – |
| next_steps | string | – | – |
| results | array | – | – |
| scope | string | – | – |
| tool | string | – | – |
| verdict | string | – | – |
{"corporate_number":"7000012050002","iban":"GB82WEST12345698765432"}kra_pin_check Kenya KRA PIN Check (Kenya Revenue Authority) ~76
Validate Kenyan Revenue Authority Tax PIN structure (A/P followed by 9 digits and checksum character). Required for M-Pesa B2B disbursement and Kenyan remote agency invoicing. Returns signed XDR-1 receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| pin | string | yes | 11-character KRA PIN (e.g. P051112223Z). |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"pin":"P051112223Z"}latam_supplier_check LatAm Supplier Verification Pack ~80
One call, one receipt: Brazilian CNPJ + Mexican RFC + settlement IBAN. Deterministic checks for the two largest LatAm corridors in one paid call.
| Name | Type | Req | Description |
|---|---|---|---|
| cnpj | string | – | Brazilian CNPJ (optional) |
| iban | string | – | Settlement IBAN (optional) |
| rfc | string | – | Mexican RFC (optional) |
| Name | Type | Req | Description |
|---|---|---|---|
| all_valid | boolean | yes | – |
| checked_count | number | yes | – |
| corridor | string | – | – |
| next_steps | string | – | – |
| results | array | – | – |
| scope | string | – | – |
| tool | string | – | – |
| verdict | string | – | – |
{"cnpj":"04.252.011/0001-10","iban":"GB82WEST12345698765432","rfc":"GODE561231GR8"}lei_check LEI Structure and Checksum Check ~49
Validate a 20-character LEI and MOD-97 check digits. No registry lookup, active-registration check or legal-entity identity verification.
| Name | Type | Req | Description |
|---|---|---|---|
| lei | string | yes | 20-character Legal Entity Identifier. |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| normalized | string | – | – |
| reason | string | yes | – |
| scope | string | – | – |
| tool | string | – | – |
| valid | boolean | yes | – |
{"lei":"529900T8BM49AURSDO55"}pan_format_check India Permanent Account Number (PAN) Format Validator ~71
Deterministic validation of Indian Permanent Account Number (PAN) issued by CBDT / Income Tax Department with 4th-character entity type classification (Individual, Company, Firm, Trust, HUF).
| Name | Type | Req | Description |
|---|---|---|---|
| pan | string | yes | 10-character PAN string (e.g. 'AAACP1234M') |
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | – |
| entity_code | string | – | – |
| entity_type | string | – | – |
| normalized | string | – | – |
| reason | string | – | – |
| scope | string | – | – |
| tool | string | yes | – |
| valid | boolean | yes | – |
{"pan":"AAACP1234M"}pre_disbursement_guard Counterparty Risk Indicators ~252
Check supplier tax and bank identifiers (IBAN, LEI, EU VAT, UK company number), domain-age evidence and country mismatch signals before vendor payment. Requires a preceding receipt hash. An advisory result is not verified identity, fraud clearance or authorization to release funds.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | – | Official corporate registration number, e.g. UK Companies House 8 digits/chars (optional). |
| declared_country | string | – | 2-letter ISO country code where vendor claims to be registered (optional, e.g. 'GB', 'US', 'DE'). |
| invoice_amount_usd | number | – | Disbursement transaction amount in USD (optional). |
| lei | string | – | ISO 17442 Legal Entity Identifier (optional). |
| physical_address | string | – | Vendor physical office address (optional). |
| prev_receipt_hash | string | – | Preceding verification receipt hash (may also be passed via X-PREV-RECEIPT-HASH header). |
| recipient_iban | string | – | Recipient bank IBAN (optional). |
| vat_number | string | – | EU VAT number (optional). |
| vendor_domain | string | – | Vendor website domain or invoicing email address (optional). |
| Name | Type | Req | Description |
|---|---|---|---|
| checks | object | – | – |
| clear_to_disburse | boolean | yes | – |
| decision | string | yes | – |
| flags_triggered | array | – | – |
| inspected_counterparty | object | – | – |
| recommendations | array | – | – |
| risk_level | string | yes | – |
| risk_score | number | yes | – |
| scope | string | – | – |
| summary | string | – | – |
| tool | string | – | – |
{"company_number":"01234567","declared_country":"GB","invoice_amount_usd":4500,"prev_receipt_hash":"0x0000000000000000000000000000000000000000000000000000000000000000","recipient_iban":"GB82WEST12345698765432","vendor_domain":"billing@acme-consulting.co.uk"}receipt_verify Verify any XDR-1 receipt — free, stateless, any issuer ~133
Verifies a signed XDR-1 receipt from ANY x402 service: recomputes the canonical digest and recovers the signer, then compares it to the declared signer. Free forever — no account, no quota, no storage (stateless). A valid receipt proves the signer signed that tool call at that timestamp; it does NOT prove funds moved or any business claim.
| Name | Type | Req | Description |
|---|---|---|---|
| receipt | string | yes | The full XDR-1 receipt object: v, tool, tool_version, input_hash, output_hash, payer, recipient, amount, nonce, ts, tier, signer, signature (optional successor/stream_state). |
| Name | Type | Req | Description |
|---|---|---|---|
| canonical | string | – | – |
| declared_signer | string | – | – |
| digest | string | – | – |
| scope | string | – | – |
| signer_recovered | string | – | – |
| valid | boolean | – | – |
{"receipt":{"amount":"0","input_hash":"0x…","nonce":"0x…","output_hash":"0x…","payer":"0xc59c85e661d34084a7769f955d17fd38254a6235","recipient":"0xc59c85e661d34084a7769f955d17fd38254a6235","signature":"0x…","signer":"0xa036e2e3e19c6d02f30b3a9eb0acd057e6d9a5c8","tier":"free","tool":"iban-check","tool_version":"1","ts":0,"v":"XDR-1"}}How do I install the openfang-rail MCP server?
openfang-rail is a hosted endpoint at https://hcrb.in/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · hcrb.in
claude mcp add --transport http 89rat-openfang-rail 'https://hcrb.in/mcp'
What is the openfang-rail MCP server?
openfang-rail is an MCP server listed in the public MCP registry as io.github.89rat/openfang-rail. Deterministic banking, LEI, VAT, SWIFT & compliance checks via MCP with signed XDR-1 receipts. This page covers its hosted endpoint (https://hcrb.in/mcp).
Is the openfang-rail MCP server safe to use?
openfang-rail scores 87 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the openfang-rail MCP server expose?
openfang-rail exposes 57 tools: crypto_ticker, erc20_balance, fx_spot_price_oracle, block_info, tx_activity, and 52 more. Their descriptions and schemas cost roughly 5,505 tokens of context every time the server is loaded.
Does the openfang-rail MCP server require authentication?
No. We connected to openfang-rail without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the openfang-rail MCP server still maintained?
openfang-rail is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.