GPT55 Model Gateway
REMOTE · GPT55.558686.XYZ · 2 COMPONENTS
Remote MCP gateway for GPT-5.6 Luna, Soul, Terra, and x402-paid agent tools with no API key.
Available components
Last scanned (7 hours ago)
Scores higher than 4% of remote servers
Reachable. Last reached 5 Nov 2026.
Category AI and Machine Learning
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 Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 530, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint returned HTTP 530. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability0
- Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
- Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
- Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified
Unverified: 5 categories
Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
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.
- 25 Oct 26 −58
- Endpoint reachability: reachable → not serving MCP ▼ security
- HTTPS: fail → unverified ▼ security
- Authorization: partial → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Stability: fail → unverified ▼ security
- HSTS header: pass → fail ▼ security
- Transport: pass → fail ▼ security
- Schema quality: 100 → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- Capabilities: fail → unverified ▼ functional
- 9 Oct 26 +2
No change was recorded against any check on this day. Stability & Change Management went from 88 to 98.
- 3 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 81 to 85.
- 29 Sept 26 0
- Tool “gpt55_balance_topup” rewrote its description, which is the text the model reads security
- Tool “gpt55_balance_topup” changed its title: GPT55 prepaid balance top-up → AI Hub prepaid balance top-up cosmetic
- Tool “gpt55_gpt55_plus_half_price_subscription” changed its title: GPT55 Plus half-price subscription simulator → AI Hub Plus half-price subscription simulator cosmetic
- Tool “gpt55_balance_metered_chat_completion” changed its title: GPT55 balance-metered chat completion → AI Hub balance-metered chat completion cosmetic
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Sept 26 0
- Stability: 0.63 → fail ▼ security
- A breaking change shipped without a version bump: still 2026.06.21 ▼ security
- Tool “chat_gpt_5_6_luna” was removed ▼ security
- Tool “chat_gpt_5_4” was removed ▼ security
- Tool “chat_standard” was removed ▼ security
- Tool “chat_gpt_5_3_codex” was removed ▼ security
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 7 Sept 26 0
- HTTPS: unverified → fail ▼ security
- Schema quality: 233 → 186 ▲ functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day functional
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://gpt55.558686.xyz/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=558686.xyz | CN=WE1,O=Google Trust Services,C=US | 1 Oct 2026 | 30 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 2e12eae3f0a4141c1397a4edbebd766e |
| SANs: 558686.xyz, *.558686.xyz | ||||||
| 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 gpt55.558686.xyz. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| xyz. | present | 3599, 18130 | 8, 8 | Verified |
| 558686.xyz. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Inconclusive
We could not reach the endpoint well enough to judge its authorisation posture.
| Result | Inconclusive |
|---|---|
| HTTP status | 530 |
| Header | Value |
|---|---|
| x-frame-options | SAMEORIGIN |
| referrer-policy | same-origin |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://gpt55.558686.xyz/mcp | HTTP error | 530 | |
| http (plaintext) | http://gpt55.558686.xyz/mcp | Inconclusive | 530 |
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 →
gpt55_x402_mcp_asset_inventory_risk_register x402 MCP Asset Inventory Risk Register ~270
Premium MCP operations agent that returns tool inventory schema, risk register rows, decommission plan, owner matrix, receipt-scope catalog, and quarterly review cadence. Pay $35.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_mcp_enterprise_rollout_pack x402 MCP Enterprise Rollout Pack ~269
Premium MCP rollout agent that returns deployment architecture, client config bundle, approval runbook, entitlement policy, security review matrix, and pilot cutover steps. Pay $18.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_mcp_entitlement_receipt_gateway x402 MCP Entitlement Receipt Gateway ~271
Premium MCP entitlement agent that returns a receipt state machine, verifier middleware, MCP tool policy, cache rules, denial responses, and replay protection for paid tool access. Pay $7.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_mcp_integration_kit x402 MCP integration kit ~171
Generate a deterministic buyer integration package for an x402/MCP service: MCP remote server config, Claude Desktop-style config hints, curl discovery checks, x402 quote test commands, endpoint selection, spending caps, and verification checklist without calling an upstream model. Pay $0.006 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| base_url | string | – | – |
| include_claude_desktop | boolean | – | – |
| max_usdc_per_call | number | – | – |
| preferred_endpoint | string | – | – |
| serviceName | string | – | – |
| service_name | string | – | – |
| url | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_mcp_integration_kit_get x402 MCP integration kit GET ~181
Generate a deterministic buyer integration package for an x402/MCP service: MCP remote server config, Claude Desktop-style config hints, curl discovery checks, x402 quote test commands, endpoint selection, spending caps, and verification checklist without calling an upstream model. GET variant for agents that prefer query parameters. Pay $0.006 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| base_url | string | – | – |
| include_claude_desktop | boolean | – | – |
| max_usdc_per_call | number | – | – |
| preferred_endpoint | string | – | – |
| serviceName | string | – | – |
| service_name | string | – | – |
| url | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_mcp_production_launch_audit x402 MCP Production Launch Audit ~275
Premium paid MCP launch agent that returns a production readiness gate, MCP client config checks, entitlement policy, receipt gate, OpenAPI/x402 discovery consistency checks, and launch blocker list. Pay $4.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_mcp_tenant_entitlement_isolation_pack x402 MCP Tenant Entitlement Isolation Pack ~275
Premium paid MCP isolation agent that returns tenant isolation policy, entitlement namespace map, cross-tenant leak tests, receipt binding rules, cache partition config, and denial response contract. Pay $31.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_mcp_tool_revenue_share_ledger x402 MCP Tool Revenue Share Ledger ~274
Premium MCP finance agent that returns split ledger schema, settlement allocation rules, partner payout rows, dispute holds, tax memo fields, and reconciliation checks for paid MCP revenue share. Pay $10.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_model_arbitrage_router_policy x402 Model Arbitrage Router Policy ~272
Premium model routing agent that returns route decision policy, cost-quality thresholds, fallback escalation rules, spend caps, evaluation evidence schema, and rollback triggers for paid AI model calls. Pay $9.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_model_procurement_benchmark_pack x402 Model Procurement Benchmark Pack ~269
Premium model procurement agent that returns model vendor scorecard, procurement benchmark matrix, route award policy, evaluation evidence schema, renewal triggers, and fallback supplier rules. Pay $32.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_model_sla_breach_claims_pack x402 Model SLA Breach Claims Pack ~270
Premium procurement agent that returns SLA evidence matrix, claim packet, service credit calculator, supplier remediation plan, benchmark rerun policy, and renewal decision memo. Pay $42.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_opportunity_finder x402 opportunity finder ~161
Scan public x402 directories, group listings by buyer-intent category, compare price distributions, and return underserved product opportunities, candidate keywords, pricing bands, and directory positioning notes. This deterministic endpoint does not call an upstream model. Pay $0.009 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| focus | string | – | – |
| limit | integer | – | – |
| page_size | integer | – | – |
| pages | integer | – | – |
| query | string | – | – |
| sources | array | – | – |
| timeout_ms | integer | – | – |
| top_n | integer | – | – |
No output schema declared.
No examples provided.
gpt55_x402_opportunity_finder_get x402 opportunity finder GET ~171
Scan public x402 directories, group listings by buyer-intent category, compare price distributions, and return underserved product opportunities, candidate keywords, pricing bands, and directory positioning notes. This deterministic endpoint does not call an upstream model. GET variant for agents that prefer query parameters. Pay $0.009 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| focus | string | – | – |
| limit | integer | – | – |
| page_size | integer | – | – |
| pages | integer | – | – |
| query | string | – | – |
| sources | array | – | – |
| timeout_ms | integer | – | – |
| top_n | integer | – | – |
No output schema declared.
No examples provided.
gpt55_x402_paid_api_contract_test_suite x402 Paid API Contract Test Suite ~275
Premium release engineering agent for paid x402 APIs. It returns contract test matrix, Playwright probe plan, CI gate config, fixture bodies, receipt assertions, and rollback criteria before public launch. Pay $11.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_paid_mcp_authorization_bridge Paid MCP authorization bridge ~303
Turn a paid MCP tool route, buyer authorization scope, x402 quote expectations, spend caps, and receipt requirements into a copy-paste authorization bridge: MCP scope contract, x402 quote gate, same-request retry plan, receipt-bound execution gate, client policy JSON, audit schema, and fail-closed runtime snippet. Built for agents that need explicit authorization before spending real USDC on paid MCP tools. This deterministic endpoint does not call an upstream model and never asks for private keys. Pay $0.012 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| allowed_origins | array | – | – |
| authorization_scope | string | – | – |
| buyer_agent | string | – | – |
| daily_budget_usdc | number | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| idempotency_key_header | string | – | – |
| max_usdc_per_call | number | – | – |
| mcp_server_url | string | – | – |
| method | string | – | – |
| paid_tool_url | string | – | – |
| require_human_approval_first_payment | boolean | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| tool_name | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_payment_failure_doctor x402 payment failure doctor ~482
Diagnose why an x402 payment did not convert from quote to settled response: missing X-PAYMENT header, payTo/network/amount mismatch, wallet spend-cap block, verify failure, settle failure, or post-payment response delivery issue. This deterministic endpoint can inspect a live quote without paying the target endpoint and never sends a payment header to the target service. Pay $0.006 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | – |
| endpoint | string | – | – |
| errorMessage | string | – | – |
| error_message | string | – | – |
| expectedAmountAtomic | string | – | – |
| expectedNetwork | string | – | – |
| expectedPayTo | string | – | – |
| expected_amount_atomic | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| facilitatorUrl | string | – | – |
| facilitator_url | string | – | – |
| hasPaymentHeader | boolean|string | – | – |
| has_payment_header | boolean|string | – | – |
| method | string | – | – |
| paymentHeaderPresent | boolean|string | – | – |
| paymentRequiredHeader | string | – | – |
| paymentRequiredHeaderPresent | boolean|string | – | – |
| paymentResponseHeaderPresent | boolean|string | – | – |
| paymentSignaturePresent | boolean|string | – | – |
| payment_header_present | boolean|string | – | – |
| payment_required_header | string | – | – |
| payment_required_header_present | boolean|string | – | – |
| payment_response_header_present | boolean|string | – | – |
| payment_signature_present | boolean|string | – | – |
| quoteHeaderPresent | boolean|string | – | – |
| quote_header_present | boolean|string | – | – |
| resource | string | – | – |
| settleStatus | integer | – | – |
| settle_status | integer | – | – |
| status | integer | – | – |
| timeout_ms | integer | – | – |
| url | string | – | – |
| verifyStatus | integer | – | – |
| verify_status | integer | – | – |
| xPaymentHeaderPresent | boolean|string | – | – |
| xPaymentResponseHeaderPresent | boolean|string | – | – |
| x_payment_header_present | boolean|string | – | – |
| x_payment_response_header_present | boolean|string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_payment_failure_doctor_get x402 payment failure doctor GET ~492
Diagnose why an x402 payment did not convert from quote to settled response: missing X-PAYMENT header, payTo/network/amount mismatch, wallet spend-cap block, verify failure, settle failure, or post-payment response delivery issue. This deterministic endpoint can inspect a live quote without paying the target endpoint and never sends a payment header to the target service. GET variant for agents that prefer query parameters. Pay $0.006 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | – |
| endpoint | string | – | – |
| errorMessage | string | – | – |
| error_message | string | – | – |
| expectedAmountAtomic | string | – | – |
| expectedNetwork | string | – | – |
| expectedPayTo | string | – | – |
| expected_amount_atomic | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| facilitatorUrl | string | – | – |
| facilitator_url | string | – | – |
| hasPaymentHeader | boolean|string | – | – |
| has_payment_header | boolean|string | – | – |
| method | string | – | – |
| paymentHeaderPresent | boolean|string | – | – |
| paymentRequiredHeader | string | – | – |
| paymentRequiredHeaderPresent | boolean|string | – | – |
| paymentResponseHeaderPresent | boolean|string | – | – |
| paymentSignaturePresent | boolean|string | – | – |
| payment_header_present | boolean|string | – | – |
| payment_required_header | string | – | – |
| payment_required_header_present | boolean|string | – | – |
| payment_response_header_present | boolean|string | – | – |
| payment_signature_present | boolean|string | – | – |
| quoteHeaderPresent | boolean|string | – | – |
| quote_header_present | boolean|string | – | – |
| resource | string | – | – |
| settleStatus | integer | – | – |
| settle_status | integer | – | – |
| status | integer | – | – |
| timeout_ms | integer | – | – |
| url | string | – | – |
| verifyStatus | integer | – | – |
| verify_status | integer | – | – |
| xPaymentHeaderPresent | boolean|string | – | – |
| xPaymentResponseHeaderPresent | boolean|string | – | – |
| x_payment_header_present | boolean|string | – | – |
| x_payment_response_header_present | boolean|string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_payment_retry_slo_autopilot x402 Payment Retry SLO Autopilot ~276
Premium reliability agent that returns retry state machine, SLO budget policy, failure escalation rules, idempotency guard, synthetic probe plan, and rollback gates for x402 clients and sellers. Pay $26.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_payment_slo_monitoring_pack x402 Payment SLO Monitoring Pack ~271
Premium x402 operations agent that returns SLO definitions, synthetic probe plan, alert rules, log fields, revenue guardrails, and incident runbook for payment health. Pay $5.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_payment_tax_invoice_reconciliation_kit x402 Payment Tax Invoice Reconciliation Kit ~268
Premium finance operations agent that returns invoice ledger schema, tax evidence packet, reconciliation workflow, exception queues, and audit export mapping for x402 settlements. Pay $17.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_ping x402 payment ping ~67
Low-cost x402 payment proof endpoint with no upstream model call. Pay $0.002 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
gpt55_x402_prepay_trust_check x402 prepay trust check ~274
Fetch a target x402 endpoint without paying it, inspect the live HTTP 402 quote, and return pay/skip/manual-review guidance for agents based on liveness, latency, amount, payTo, network, asset, scheme, and buyer spend caps. This deterministic endpoint never sends a payment header to the target endpoint and does not call an upstream model. Pay $0.004 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | – |
| endpoint | string | – | – |
| expectedAsset | string | – | – |
| expectedNetwork | string | – | – |
| expectedPayTo | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| maxLatencyMs | integer | – | – |
| maxPriceUsd | number | – | – |
| max_latency_ms | integer | – | – |
| max_price_usd | number | – | – |
| method | string | – | – |
| observedConsecutiveFailures | integer | – | – |
| observed_consecutive_failures | integer | – | – |
| timeout_ms | integer | – | – |
| url | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_prepay_trust_check_get x402 prepay trust check GET ~284
Fetch a target x402 endpoint without paying it, inspect the live HTTP 402 quote, and return pay/skip/manual-review guidance for agents based on liveness, latency, amount, payTo, network, asset, scheme, and buyer spend caps. This deterministic endpoint never sends a payment header to the target endpoint and does not call an upstream model. GET variant for agents that prefer query parameters. Pay $0.004 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | – |
| endpoint | string | – | – |
| expectedAsset | string | – | – |
| expectedNetwork | string | – | – |
| expectedPayTo | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| maxLatencyMs | integer | – | – |
| maxPriceUsd | number | – | – |
| max_latency_ms | integer | – | – |
| max_price_usd | number | – | – |
| method | string | – | – |
| observedConsecutiveFailures | integer | – | – |
| observed_consecutive_failures | integer | – | – |
| timeout_ms | integer | – | – |
| url | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_private_gateway_deployment_plan x402 Private Gateway Deployment Plan ~267
Premium deployment agent that returns private gateway architecture, secret boundary map, cutover checklist, observability plan, rollback criteria, and public discovery migration tasks. Pay $24.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_procurement_vendor_risk_dossier x402 Procurement Vendor Risk Dossier ~291
Premium procurement agent for x402 and paid MCP services. It turns vendor URL, route, payTo, network, price cap, receipts, and buyer use case into a scorecard, approval memo, security checklist, budget note, and pay/no-pay policy. Pay $5.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_intent_quotes_24h | number | – | – |
| buyer_runtime | string | – | – |
| buyer_team | string | – | – |
| daily_budget_usdc | number | – | – |
| endpoint | string | – | – |
| expected_asset | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_usdc_per_call | number | – | – |
| method | string | – | – |
| monthly_budget_usdc | number | – | – |
| paid_route | string | – | – |
| quote_count_24h | number | – | – |
| receipts | array | – | – |
| require_receipt_evidence | boolean | – | – |
| service_url | string | – | – |
| settled_24h | number | – | – |
| use_case | string | – | – |
| vendor_name | string | – | – |
| wallet_env_var | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_quote_inspector x402 quote inspector ~142
Fetch a public x402 endpoint without paying it, parse its 402 Payment Required quote, and return schemes, amounts, network, asset, payTo, resource metadata, and buyer-readiness warnings. This deterministic endpoint does not call an upstream model. Pay $0.002 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | – |
| endpoint | string | – | – |
| method | string | – | – |
| timeout_ms | integer | – | – |
| url | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_quote_inspector_get x402 quote inspector GET ~152
Fetch a public x402 endpoint without paying it, parse its 402 Payment Required quote, and return schemes, amounts, network, asset, payTo, resource metadata, and buyer-readiness warnings. This deterministic endpoint does not call an upstream model. GET variant for agents that prefer query parameters. Pay $0.002 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| body | object | – | – |
| endpoint | string | – | – |
| method | string | – | – |
| timeout_ms | integer | – | – |
| url | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_receipt_bound_execution_gate x402 receipt-bound execution gate ~306
Evaluate a paid x402 receipt, route, payTo, network, amount, actionRef, toolCallId, and paid result summary, then return allow/manual_review/deny guidance, receipt binding checks, reuse policy, MCP gate config, Flowise gate config, audit record, and a copy-paste guard snippet. Built for buyers who need post-payment entitlement and paid-result reuse decisions without sending private keys or making another payment on their behalf. Pay $0.012 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| action_ref | string | – | – |
| allow_reuse | boolean | – | – |
| amount_atomic | string | – | – |
| expected_amount_atomic | string | – | – |
| expected_network | string | – | – |
| expected_pay_to | string | – | – |
| max_age_seconds | integer | – | – |
| method | string | – | – |
| network | string | – | – |
| paid_result_summary | string | – | – |
| paid_route | string | – | – |
| pay_to | string | – | – |
| receipt_created_at | string | – | – |
| receipt_id | string | – | – |
| receipt_url | string | – | – |
| require_action_ref | boolean | – | – |
| require_result_hash | boolean | – | – |
| result_hash | string | – | – |
| tool_call_id | string | – | – |
No output schema declared.
No examples provided.
gpt55_x402_receipt_dispute_pack x402 receipt dispute pack ~566
Turn a paid x402 receipt, transaction hash, route, amount, payTo, network, and response evidence into a buyer-owned audit and dispute pack. Returns evidence completeness, receipt hash checks, missing evidence, replay-safe audit record, refund/dispute notes, and next-payment policy. This deterministic endpoint does not call an upstream model and never asks for private keys. Pay $0.006 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
| Name | Type | Req | Description |
|---|---|---|---|
| actionRef | string | – | – |
| action_ref | string | – | – |
| amount | string | – | – |
| amountAtomic | string | – | – |
| amountUsd | number | – | – |
| amount_atomic | string | – | – |
| amount_usdc | number | – | – |
| asset | string | – | – |
| assetAddress | string | – | – |
| asset_address | string | – | – |
| chain | string | – | – |
| disputeReason | string | – | – |
| dispute_reason | string | – | – |
| httpStatus | integer | – | – |
| http_status | integer | – | – |
| method | string | – | – |
| network | string | – | – |
| paidJsonPresent | boolean|string | – | – |
| paidResultFields | array|string | – | – |
| paid_json_present | boolean|string | – | – |
| paid_result_fields | array|string | – | – |
| path | string | – | – |
| payTo | string | – | – |
| pay_to | string | – | – |
| paymentHash | string | – | – |
| paymentResponseHeaderPresent | boolean|string | – | – |
| payment_hash | string | – | – |
| payment_response_header_present | boolean|string | – | – |
| reason | string | – | – |
| receipt | object | – | – |
| receiptHash | string | – | – |
| receiptHeaderPresent | boolean|string | – | – |
| receiptId | string | – | – |
| receiptUrl | string | – | – |
| receipt_hash | string | – | – |
| receipt_header_present | boolean|string | – | – |
| receipt_id | string | – | – |
| receipt_url | string | – | – |
| resource | string | – | – |
| responseFields | array|string | – | – |
| response_fields | array|string | – | – |
| resultPresent | boolean|string | – | – |
| result_present | boolean|string | – | – |
| route | string | – | – |
| statusCode | integer | – | – |
| status_code | integer | – | – |
| transaction | string | – | – |
| txHash | string | – | – |
| tx_hash | string | – | – |
| url | string | – | – |
| xPaymentResponseHeaderPresent | boolean|string | – | – |
| x_payment_response_header_present | boolean|string | – | – |
No output schema declared.
No examples provided.
How do I install the GPT55 Model Gateway MCP server?
GPT55 Model Gateway is a hosted endpoint at https://gpt55.558686.xyz/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 · gpt55.558686.xyz
claude mcp add --transport http xyz-558686-gpt55-token-gateway 'https://gpt55.558686.xyz/mcp'
What is the GPT55 Model Gateway MCP server?
GPT55 Model Gateway is an MCP server listed in the public MCP registry as xyz.558686.gpt55/token-gateway. Remote MCP gateway for GPT-5.6 Luna, Soul, Terra, and x402-paid agent tools with no API key. This page covers its hosted endpoint (https://gpt55.558686.xyz/mcp).
Is the GPT55 Model Gateway MCP server safe to use?
GPT55 Model Gateway scores 18 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 GPT55 Model Gateway MCP server expose?
GPT55 Model Gateway exposes 214 tools: gpt55_x402_ping, gpt55_balance_topup, gpt55_balance_metered_chat_completion, chat_gpt_5_6_soul, chat_gpt_5_6_terra, and 209 more. Their descriptions and schemas cost roughly 42,213 tokens of context every time the server is loaded.
Does the GPT55 Model Gateway MCP server require authentication?
Its publisher declares no required credentials for GPT55 Model Gateway. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.
Is the GPT55 Model Gateway MCP server still maintained?
GPT55 Model Gateway 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.