Agent Data API
REMOTE · ONCHAINCHECK.DEV
Token risk, wallet profiles, OFAC screening, whale trades on 6 chains. x402, USDC per call.
Available components
Last scanned (7 hours ago)
Scores higher than 45% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Crypto and Web3
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 fully verified: no authorisation is required to call this server, and 72 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, 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 & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability71
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 9265 tokens (~128/item across 72 items; 72 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management40
- Stability observed for 12 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 72 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 72 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.
- 5 Nov 26 +1
- Tool “company_jobs” rewrote its description, which is the text the model reads security
- New tool “company_profile” functional
- New tool “jobs_new” functional
- New tool “jobs_salary” functional
- New tool “jobs_search” functional
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Oct 26 0
- New tool “deployer_record” functional
- New tool “token_verdict” functional
- 25 Oct 26 +1
- Tool “token_risk_check” rewrote its description, which is the text the model reads security
- Stability: unverified → 0.03 ▲ functional
- New tool “token_watchlist” functional
- 24 Oct 26 59
First indexed and scored.
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://onchaincheck.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=onchaincheck.dev | CN=WE1,O=Google Trust Services,C=US | 24 Oct 2026 | 22 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 922cf79c9652f3b70edb08a33c298bb9 |
| SANs: onchaincheck.dev, testnet.onchaincheck.dev, *.testnet.onchaincheck.dev | ||||||
| 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 onchaincheck.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| onchaincheck.dev. | 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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://onchaincheck.dev/mcp | Verified | 200 | |
| http (plaintext) | http://onchaincheck.dev/mcp | Inconclusive | 406 |
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 →
optimism_token_snapshot ~141
Rug check and due-diligence snapshot of an ERC-20 token on OP Mainnet: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WETH or USDC pool on Uniswap v3 or Velodrome. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Token contract address on OP Mainnet |
No output schema declared.
No examples provided.
optimism_transaction_summary ~78
Human-readable summary of a OP Mainnet transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| hash | string | yes | Transaction hash on OP Mainnet |
No output schema declared.
No examples provided.
optimism_wallet_balances ~100
Native ETH balance of a OP Mainnet wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from OP Mainnet. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet address on OP Mainnet |
| tokens | string | – | Comma-separated ERC-20 contract addresses on OP Mainnet, up to 20 |
No output schema declared.
No examples provided.
optimism_wallet_profile ~111
Who is this OP Mainnet address? Wallet age (first transfer), first funder, contract or EOA, ETH balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (ETH, WETH, USDC, USDT), from Alchemy's transfer index. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet or contract address on OP Mainnet |
No output schema declared.
No examples provided.
polygon_contract_info ~105
Identify what lives at a Polygon PoS address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and POL balance. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Any address on Polygon PoS |
No output schema declared.
No examples provided.
polygon_erc20_allowance ~103
ERC-20 allowance on Polygon PoS: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| owner | string | yes | Address that granted the approval |
| spender | string | yes | Address allowed to spend |
| token | string | yes | ERC-20 contract on Polygon PoS |
No output schema declared.
No examples provided.
polygon_gas_prices ~69
Current Polygon PoS gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in POL and USD of a native transfer and an ERC-20 transfer (Chainlink POL/USD). Costs $0.005 USDC on Base via x402.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
polygon_large_trades ~193
Whale and large-trade tracker for an ERC-20 on Polygon PoS: every buy and sell in the last N minutes on the token's deepest WPOL/USDC pools (Uniswap v3), with USD size, side, wallet and transaction for the largest trades, buy/sell volume and net flow, and the wallets that bought or sold the most. Costs $0.02 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | string | – | Max trades listed, 1 to 40, default 20 |
| minUsd | string | – | Only list trades at least this large in USD, default 1000 |
| minutes | string | – | Look-back window in minutes; 5 to 240, default 60 (capped at 12,000 blocks, about 50 minutes on Arbitrum) |
| token | string | yes | Token contract address on Polygon PoS |
No output schema declared.
No examples provided.
polygon_new_pools ~154
New trading pools created on Polygon PoS in the last N minutes on Uniswap v4, Uniswap v3: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with POL, WPOL or USDC, and quote liquidity where readable. Unvetted: many new pools are spam. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | string | – | Max pools listed, newest first, 1 to 50, default 25 |
| minutes | string | – | Look-back window in minutes; 5 to 240, default 60 (capped at 12,000 blocks, about 50 minutes on Arbitrum) |
No output schema declared.
No examples provided.
polygon_nft_metadata ~111
Metadata for an ERC-721 or ERC-1155 token on Polygon PoS: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable image URL. Costs $0.008 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| contract | string | yes | NFT collection contract on Polygon PoS |
| tokenId | string | yes | Token id as a decimal string |
No output schema declared.
No examples provided.
polygon_token_snapshot ~137
Rug check and due-diligence snapshot of an ERC-20 token on Polygon PoS: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WPOL or USDC pool on Uniswap v3. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Token contract address on Polygon PoS |
No output schema declared.
No examples provided.
polygon_transaction_summary ~78
Human-readable summary of a Polygon PoS transaction: status, block and time, sender and recipient, POL value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| hash | string | yes | Transaction hash on Polygon PoS |
No output schema declared.
No examples provided.
polygon_wallet_balances ~100
Native POL balance of a Polygon PoS wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Polygon PoS. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet address on Polygon PoS |
| tokens | string | – | Comma-separated ERC-20 contract addresses on Polygon PoS, up to 20 |
No output schema declared.
No examples provided.
polygon_wallet_profile ~111
Who is this Polygon PoS address? Wallet age (first transfer), first funder, contract or EOA, POL balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (POL, WPOL, USDC, USDT), from Alchemy's transfer index. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet or contract address on Polygon PoS |
No output schema declared.
No examples provided.
prepayment_safety_check ~216
Is it safe to pay this address? One check before sending or accepting crypto: OFAC SDN sanctions screen, wallet age, EOA or contract, first funder and recent large transfers on Base, Ethereum, Arbitrum, Optimism or Polygon (wallet kind and activity on Solana), plus the token's 0-100 risk score when a token is given. Returns ok, caution or block with plain reasons and each check in full. Rules-based, not legal advice. Costs $0.02 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Address you are about to pay or receive from |
| chain | string | – | Chain of the payment; defaults to solana for base58 addresses, otherwise base |
| expect | string | – | What the address should be: eoa (a wallet), contract, or any (default); a mismatch gives caution |
| token | string | – | Token being paid or received (contract or mint on the same chain); adds its risk score |
No output schema declared.
No examples provided.
prepayment_safety_check_lite ~192
Is it safe to pay this address? The address-only version of /check: OFAC SDN sanctions screen, wallet age, EOA or contract, first funder and recent large transfers on Base, Ethereum, Arbitrum, Optimism or Polygon (wallet kind and activity on Solana), with the funder and counterparties screened too. Returns ok, caution or block with plain reasons. No token score (use /check for that). Rules-based, not legal advice. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Address you are about to pay or receive from |
| chain | string | – | Chain of the payment; defaults to solana for base58 addresses, otherwise base |
| expect | string | – | What the address should be: eoa (a wallet), contract, or any (default); a mismatch gives caution |
No output schema declared.
No examples provided.
solana_token_snapshot ~139
Rug check and due-diligence snapshot of a Solana SPL or Token-2022 token: a 0-100 risk score with reasons, name, symbol, supply, mint and freeze authority, Token-2022 controls (permanent delegate, transfer fees, transfer hook, pausable), metadata mutability, top-holder concentration split into wallets and program accounts, and USD price, liquidity, volume and pools from Jupiter and DexScreener. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Token mint address on Solana (base58) |
No output schema declared.
No examples provided.
solana_wallet ~112
Portfolio and activity of a Solana wallet: SOL and every SPL and Token-2022 balance with USD values from Jupiter, sorted by value, with dust, unpriced and empty token accounts summarized, plus the newest transaction time, transactions in the last 24 hours, and the oldest transaction in the newest 1,000, with a flag when history goes further back. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet address on Solana (base58) |
No output schema declared.
No examples provided.
token_risk_check ~186
Is this token safe? Rug check for any token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a 0-100 risk score with plain reasons (mint, freeze, blacklist, fee, pause or trading-switch powers, upgradeable code, holder concentration, thin liquidity, a deployer whose earlier tokens lost their liquidity), the facts behind it, and USD price and liquidity. A fingerprint sent back as since returns what changed. Rules-based, not advice. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Token contract (EVM) or mint (Solana) address |
| chain | string | – | Chain the token is on; defaults to solana for base58 addresses, otherwise base |
| since | string | – | watch.fingerprint from an earlier call; adds what changed since then |
No output schema declared.
No examples provided.
token_verdict ~192
Rug Radar verdict for a token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a grade (CLEAN, MID, SKETCHY, RUGGY), a one-liner, a short take and a shareable card, built from real onchain facts: the 0-100 risk score with its reasons and the deployer's record (did their earlier tokens lose liquidity?). Same call shape as quest verdicts: POST tokenAddress with an optional requestKey, echoed back. Rules-based, not financial advice. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | string | – | Chain; defaults to solana for base58 addresses, otherwise base |
| requestKey | string | – | Optional caller-chosen id, echoed back in the response |
| tokenAddress | string | yes | Token contract (EVM) or mint (Solana) address |
No output schema declared.
No examples provided.
token_watchlist ~208
Re-check up to 5 tokens you hold or watch in one call, on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: each token's 0-100 risk score, level, reason codes, price, liquidity and a fingerprint. Send the fingerprints back as since to get what changed (new risks, owner or authority changes, liquidity or price moves of 10%+) and a short list of alerts. One price for the whole list, made for polling positions on a schedule. Rules-based, not advice. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| since | string | – | Fingerprints from an earlier call, comma-separated in the same order as tokens (empty for a new token) |
| tokens | string | yes | Up to 5 chain:address pairs, comma-separated (chains: base, eth, arbitrum, optimism, polygon, solana); a bare address defaults to solana for base58, otherwise base |
No output schema declared.
No examples provided.
x402_ping ~67
The smallest real x402 paid call: costs $0.001 in USDC and returns ok with the server time and payment network. Useful for checking that an x402 client can sign and settle a payment end to end. Costs $0.001 USDC on Base via x402.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Agent Data API MCP server?
Agent Data API is a hosted endpoint at https://onchaincheck.dev/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 · onchaincheck.dev
claude mcp add --transport http lx1112-agent-data-api 'https://onchaincheck.dev/mcp'
What is the Agent Data API MCP server?
Agent Data API is an MCP server listed in the public MCP registry as io.github.lx1112/agent-data-api. Token risk, wallet profiles, OFAC screening, whale trades on 6 chains. x402, USDC per call. This page covers its hosted endpoint (https://onchaincheck.dev/mcp).
Is the Agent Data API MCP server safe to use?
Agent Data API scores 65 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 Agent Data API MCP server expose?
Agent Data API exposes 72 tools: canada_sales_tax, canada_business_days, canada_statutory_holidays, fx_ecb_rates, fx_ecb_convert, and 67 more. Their descriptions and schemas cost roughly 9,265 tokens of context every time the server is loaded.
Does the Agent Data API MCP server require authentication?
No. We connected to Agent Data API without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Agent Data API MCP server still maintained?
Agent Data API 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.