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 (4 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 →
address_sanctions_screen ~199
Is this address sanctioned? Screens a crypto address against the US Treasury OFAC SDN list's published digital currency addresses (ETH, USDC, USDT, XBT, SOL, TRX and others): the listed entity, programs and listing date on a match, or not found as of the list date. Adds whether it is a wallet (EOA) or contract on Base, Ethereum, Arbitrum, Optimism or Polygon, or a wallet or program-derived address on Solana. Not legal advice. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Address to screen: 0x (EVM), base58 (Solana), or any other currency's address with chain=other |
| chain | string | – | Chain for the wallet/contract check; defaults to base for 0x addresses, solana for Solana addresses, otherwise other (list check only) |
No output schema declared.
No examples provided.
arbitrum_contract_info ~108
Identify what lives at a Arbitrum One 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 ETH balance. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Any address on Arbitrum One |
No output schema declared.
No examples provided.
arbitrum_erc20_allowance ~106
ERC-20 allowance on Arbitrum One: 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 Arbitrum One |
No output schema declared.
No examples provided.
arbitrum_gas_prices ~71
Current Arbitrum One gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD). Costs $0.005 USDC on Base via x402.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
arbitrum_large_trades ~196
Whale and large-trade tracker for an ERC-20 on Arbitrum One: every buy and sell in the last N minutes on the token's deepest WETH/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 Arbitrum One |
No output schema declared.
No examples provided.
arbitrum_new_pools ~156
New trading pools created on Arbitrum One 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 ETH, WETH 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.
arbitrum_nft_metadata ~114
Metadata for an ERC-721 or ERC-1155 token on Arbitrum One: 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 Arbitrum One |
| tokenId | string | yes | Token id as a decimal string |
No output schema declared.
No examples provided.
arbitrum_token_snapshot ~140
Rug check and due-diligence snapshot of an ERC-20 token on Arbitrum One: 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. 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 Arbitrum One |
No output schema declared.
No examples provided.
arbitrum_transaction_summary ~81
Human-readable summary of a Arbitrum One 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 Arbitrum One |
No output schema declared.
No examples provided.
arbitrum_wallet_balances ~105
Native ETH balance of a Arbitrum One wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Arbitrum One. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet address on Arbitrum One |
| tokens | string | – | Comma-separated ERC-20 contract addresses on Arbitrum One, up to 20 |
No output schema declared.
No examples provided.
arbitrum_wallet_profile ~114
Who is this Arbitrum One 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 Arbitrum One |
No output schema declared.
No examples provided.
base_contract_info ~101
Identify what lives at a Base 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 ETH balance. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Any address on Base |
No output schema declared.
No examples provided.
base_erc20_allowance ~99
ERC-20 allowance on Base: 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 Base |
No output schema declared.
No examples provided.
base_gas_prices ~67
Current Base gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD). Costs $0.005 USDC on Base via x402.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
base_large_trades ~193
Whale and large-trade tracker for an ERC-20 on Base: every buy and sell in the last N minutes on the token's deepest WETH/USDC pools (Uniswap v3 or Aerodrome), 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 Base |
No output schema declared.
No examples provided.
base_new_pools ~156
New trading pools created on Base in the last N minutes on Uniswap v4, Uniswap v3 or Aerodrome: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH 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.
base_nft_metadata ~107
Metadata for an ERC-721 or ERC-1155 token on Base: 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 Base |
| tokenId | string | yes | Token id as a decimal string |
No output schema declared.
No examples provided.
base_resolve_basename ~79
Resolve a Basename (name.base.eth) to its Base address and profile records (avatar, description, url, Twitter, GitHub). Accepts "jesse", "jesse.base" or "jesse.base.eth". Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | Basename |
No output schema declared.
No examples provided.
base_token_snapshot ~137
Rug check and due-diligence snapshot of an ERC-20 token on Base: 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 Aerodrome. 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 Base |
No output schema declared.
No examples provided.
base_transaction_summary ~74
Human-readable summary of a Base 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 Base |
No output schema declared.
No examples provided.
base_wallet_balances ~92
Native ETH balance of a Base wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Base. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet address on Base |
| tokens | string | – | Comma-separated ERC-20 contract addresses on Base, up to 20 |
No output schema declared.
No examples provided.
base_wallet_profile ~107
Who is this Base 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 Base |
No output schema declared.
No examples provided.
canada_business_days ~119
Number of business days between two dates in a Canadian province or territory, excluding weekends and that province's statutory holidays (with weekend holidays moved to their observed weekday). Counts from the start date up to but not including the end date, and lists the holidays skipped. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | First day counted, YYYY-MM-DD |
| province | string | yes | Two-letter Canadian province or territory code |
| to | string | yes | Day after the last day counted, YYYY-MM-DD |
No output schema declared.
No examples provided.
canada_sales_tax ~138
Canadian sales tax breakdown for an amount in a province or territory: GST, HST, PST, RST or QST with each rate and amount rounded to the cent, plus the total. Rates are looked up for the given date (default today), so historical changes such as Nova Scotia's 2025 HST cut are handled. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | string | yes | Pre-tax amount in CAD |
| date | string | – | Date the rates apply to, YYYY-MM-DD; defaults to today (UTC) |
| province | string | yes | Two-letter Canadian province or territory code |
No output schema declared.
No examples provided.
canada_statutory_holidays ~97
Statutory (general) holidays for a Canadian province or territory in a given year, using the province's local names, with the actual date and the weekday it is observed when it falls on a weekend. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| province | string | yes | Two-letter Canadian province or territory code |
| year | string | yes | Year from 2000 to 2100 |
No output schema declared.
No examples provided.
company_jobs ~226
Remote or on-site jobs open at a company right now, from its own applicant tracking system's public job board: Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee, BambooHR, Personio, Teamtailor, or Workday from a careers URL. Give a company name, website or job-board URL, with optional title, location and remote filters. Returns the newest 50 matching jobs with title, department, location, remote flag, salary when published, posting date and apply link, plus total counts. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| company | string | yes | Company name (stripe), website (stripe.com) or job-board URL (https://jobs.lever.co/palantir) |
| location | string | – | Keep jobs whose location, country or workplace type contains this text (london, remote) |
| remote | string | – | true keeps only jobs marked remote |
| title | string | – | Keep jobs whose title contains this text; comma-separate alternatives (engineer,developer) |
No output schema declared.
No examples provided.
company_profile ~135
Is a company hiring? A company's hiring profile from its public job board (Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee), crawled twice a day: careers page, open roles, top departments, locations and countries, remote share, pay median, newest jobs, and jobs opened and closed in the last 7 and 30 days from our crawl history. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| company | string | yes | Company name, website or careers-page URL (openai, stripe.com, https://jobs.lever.co/palantir) |
No output schema declared.
No examples provided.
deployer_record ~180
Who launched this token, and what happened to their other tokens? A creator's launch record on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana from our own history of new pools: every token the wallet launched since 2026-10-23 with its risk score at launch and whether its liquidity was gone 24 hours and 7 days later, plus a verdict (repeat-rugger, prior-rug, serial-launcher, clean-so-far, too-new). Pass the deployer wallet or a token address. Not advice. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | The deployer wallet, or a token address (then its deployer is looked up) |
| chain | string | – | Chain; defaults to solana for base58 addresses, otherwise base |
No output schema declared.
No examples provided.
eth_contract_info ~101
Identify what lives at a Ethereum 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 ETH balance. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Any address on Ethereum |
No output schema declared.
No examples provided.
eth_erc20_allowance ~99
ERC-20 allowance on Ethereum: 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 Ethereum |
No output schema declared.
No examples provided.
eth_gas_prices ~67
Current Ethereum gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD). Costs $0.005 USDC on Base via x402.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
eth_large_trades ~189
Whale and large-trade tracker for an ERC-20 on Ethereum: every buy and sell in the last N minutes on the token's deepest WETH/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 Ethereum |
No output schema declared.
No examples provided.
eth_new_pools ~152
New trading pools created on Ethereum 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 ETH, WETH 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.
eth_nft_metadata ~107
Metadata for an ERC-721 or ERC-1155 token on Ethereum: 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 Ethereum |
| tokenId | string | yes | Token id as a decimal string |
No output schema declared.
No examples provided.
eth_resolve_ens ~104
ENS on Ethereum: resolve a name (vitalik.eth) to its address and profile records (avatar, description, url, Twitter, GitHub), or pass an address instead to get its primary ENS name. Uses ENS's universal resolver. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Address for a reverse lookup instead of name |
| name | string | – | ENS name, e.g. vitalik.eth |
No output schema declared.
No examples provided.
eth_token_snapshot ~133
Rug check and due-diligence snapshot of an ERC-20 token on Ethereum: 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. 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 Ethereum |
No output schema declared.
No examples provided.
eth_transaction_summary ~74
Human-readable summary of a Ethereum 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 Ethereum |
No output schema declared.
No examples provided.
eth_wallet_balances ~92
Native ETH balance of a Ethereum wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Ethereum. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Wallet address on Ethereum |
| tokens | string | – | Comma-separated ERC-20 contract addresses on Ethereum, up to 20 |
No output schema declared.
No examples provided.
eth_wallet_profile ~107
Who is this Ethereum 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 Ethereum |
No output schema declared.
No examples provided.
fx_ecb_convert ~112
Convert an amount between two currencies at the European Central Bank daily reference rate, latest or for a past date, returning the rate used, the result, and the rate date. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | string | yes | Amount in the source currency |
| date | string | – | Past date YYYY-MM-DD; latest if omitted |
| from | string | yes | ISO 4217 source currency |
| to | string | yes | ISO 4217 target currency |
No output schema declared.
No examples provided.
fx_ecb_rates ~110
European Central Bank daily reference exchange rates for about 30 major currencies, from any base currency, latest or for a past date. Rates update once per working day; the response states which day. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| base | string | – | ISO 4217 base currency, default USD |
| date | string | – | Past date YYYY-MM-DD; latest if omitted |
| symbols | string | – | Comma-separated target currencies; all if omitted |
No output schema declared.
No examples provided.
jobs_new ~250
Job alerts: new job openings since a time, for monitoring (e.g. new remote engineering roles): jobs first seen by a twice-daily crawl of about 20,000 company job boards (Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee). Same filters as /jobs/search (title, company, location, remote, minimum salary). Returns up to 50 newest, each with when it was first seen, and nextSince for the next poll. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| company | string | – | Company name words |
| currency | string | – | Currency for minSalary (default USD) |
| limit | string | – | Results, 1-50 (default 25) |
| location | string | – | Location or country words |
| minSalary | string | – | Minimum yearly pay, in currency; only jobs that publish pay |
| remote | string | – | true keeps only remote jobs |
| since | string | yes | ISO 8601 time or Unix seconds; older than 30 days counts as 30 days ago |
| title | string | – | Words in the job title; comma-separate alternatives |
No output schema declared.
No examples provided.
jobs_salary ~168
Salary for a job title: how much a role pays, from open postings that publish pay, on about 20,000 company job boards crawled twice a day. Optional location, remote and currency. Returns yearly p10/p25/median/p75/p90, the typical posted range, remote vs on-site medians, the five top-paying companies and the posting count. Costs $0.01 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Currency (USD, EUR...); default the commonest among matches |
| location | string | – | Location or country words (london, canada) |
| remote | string | – | true uses only remote postings |
| title | string | yes | Words in the job title; comma-separate alternatives (data engineer,analytics engineer) |
No output schema declared.
No examples provided.
jobs_search ~257
Job search: find open jobs (remote, by title, location or pay) across about 20,000 company job boards (Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee), crawled twice a day: about 470,000 jobs. Filter by title words, company, location, remote, minimum yearly salary and posting age. Returns up to 50 newest matches with company, location, remote flag, salary when published, posting date and link. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| company | string | – | Company name words (stripe) |
| currency | string | – | Currency for minSalary (default USD) |
| limit | string | – | Results, 1-50 (default 25) |
| location | string | – | Location or country words (berlin, canada) |
| minSalary | string | – | Minimum yearly pay, in currency; only jobs that publish pay |
| postedWithinDays | string | – | Only jobs posted in the last N days (1-365) |
| remote | string | – | true keeps only remote jobs |
| title | string | – | Words in the job title; comma-separate alternatives (data engineer,analytics engineer) |
No output schema declared.
No examples provided.
optimism_contract_info ~105
Identify what lives at a OP Mainnet 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 ETH balance. Costs $0.005 USDC on Base via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Any address on OP Mainnet |
No output schema declared.
No examples provided.
optimism_erc20_allowance ~103
ERC-20 allowance on OP Mainnet: 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 OP Mainnet |
No output schema declared.
No examples provided.
optimism_gas_prices ~69
Current OP Mainnet gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD). Costs $0.005 USDC on Base via x402.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
optimism_large_trades ~197
Whale and large-trade tracker for an ERC-20 on OP Mainnet: every buy and sell in the last N minutes on the token's deepest WETH/USDC pools (Uniswap v3 or Velodrome), 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 OP Mainnet |
No output schema declared.
No examples provided.
optimism_new_pools ~158
New trading pools created on OP Mainnet in the last N minutes on Uniswap v4, Uniswap v3 or Velodrome: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH 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.
optimism_nft_metadata ~111
Metadata for an ERC-721 or ERC-1155 token on OP Mainnet: 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 OP Mainnet |
| tokenId | string | yes | Token id as a decimal string |
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.