Tanod chainpeek
chainpeek (Tanod) address-poisoning check before a token transfer: is the recipient a lookalike (same first and last 4 hex characters) of an address in the sender's history or contacts? Use when an agent is about to send USDC or a token and must check the recipient is not an address-poisoning lookalike.
OtherLiveeip155:8453Exactvia cdp
ChainpeekChainAddressPoisoningEns
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 19 snapshots so far.
$4.72
Verified settled volume
638 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-15 02:45Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x593857A4a4F619543ea12394137C3004ce841720The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required (USD 0.002 base price shown). This route takes POST with a JSON body (input schema in extensions.bazaar); the 402 of a POST quotes the exact price. Free tier (opt-in): 10 chain reads per IP per UTC day with header X-Tanod-Free: 1 (no payment needed). Charged only when the call returns an answer (HTTP 200); try a USD 0.001 test payment at POST /v1/x402/pay-test; terms: https://tanod.dev/payments/",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "RMk9k3VC8dr4hhjgFh88rGhjAbzfBzHxJJ5n2fTcqus",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
},
{
"asset": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
"extra": {
"name": "USD Coin",
"version": "2",
"assetTransferMethod": "permit2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000000000000000",
"scheme": "exact",
"network": "eip155:56",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 604900
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "GatewayWalletBatched",
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 604900
}
],
"resource": {
"url": "https://tanod.dev/v1/chain/address-poisoning",
"tags": [
"chainpeek",
"chain",
"address",
"poisoning",
"ens"
],
"iconUrl": "https://tanod.dev/icon.png",
"mimeType": "application/json",
"description": "chainpeek (Tanod) address-poisoning check before a token transfer: is the recipient a lookalike (same first and last 4 hex characters) of an address in the sender's history or contacts? Use when an agent is about to send USDC or a token and must check the recipient is not an address-poisoning lookalike.",
"serviceName": "Tanod chainpeek"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"to": "0x7A25e8814F0C6D3B2a9e7f15C08D64B2A91EC4d3",
"from": "0x5A0b54D5dc17e0AadC383d2db43B0a0D3E029c4c",
"chain": "base"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"to": "0x7A25e8814F0C6D3B2a9e7f15C08D64B2A91EC4d3",
"from": "0x5A0b54D5dc17e0AadC383d2db43B0a0D3E029c4c",
"risk": "high",
"chain": "base",
"rules": {
"dust": "an incoming transfer below dust_threshold (default 0.01 for USDC and USDT, off for other tokens unless set)",
"paid": "`from` sent the address a non-zero amount of this token",
"zero_value": "a transfer of 0, either direction",
"prefix_chars": 4,
"suffix_chars": 4
},
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"limits": [
"Only the transfers of this one token in the lookback window are read; an older poisoning, or one made with another token (including a fake token with the same symbol), is not seen.",
"Lookalike means the same first 4 and last 4 hex characters; an address that imitates other characters is not matched.",
"A low risk means no lookalike was found in what was read, not that the recipient is the one you meant: compare the whole address with a source you trust.",
"Pass the addresses you pay in `contacts` to compare `to` with them as well, whatever the lookback."
],
"history": {
"dust": 0,
"read": true,
"blocks": 2000,
"complete": true,
"to_block": 52512000,
"transfers": 2,
"from_block": 52510001,
"zero_value": 1,
"counterparties": 2,
"paid_addresses": 1
},
"matches": [
{
"dust": 0,
"address": "0x7a2510c3E9b8f4d61E0A5b97c2F43d8e1F6Bc4D3",
"transfers": [
{
"kind": "value",
"block": 52511207,
"amount": "25",
"tx_hash": "0xcc24197b89d9fe816555422c5d16724022a44cced46666edb41a789b8ae3d47d",
"direction": "out",
"log_index": 41,
"amount_raw": "25000000"
}
],
"zero_value": 0,
"in_contacts": false,
"paid_by_from": true,
"prefix_match": 4,
"suffix_match": 4,
"transfers_total": 1
}
],
"reasons": [
{
"code": "to_mimics_paid_address",
"message": "`to` shares the first 4 and last 4 hex characters with 0x7a2510c3E9b8f4d61E0A5b97c2F43d8e1F6Bc4D3, which `from` paid in the lookback, and `from` never paid `to` itself: the shape of an address-poisoning lookalike.",
"evidence": {
"others": [],
"paid_address": "0x7a2510c3E9b8f4d61E0A5b97c2F43d8e1F6Bc4D3",
"paid_transfers": [
{
"kind": "value",
"block": 52511207,
"amount": "25",
"tx_hash": "0xcc24197b89d9fe816555422c5d16724022a44cced46666edb41a789b8ae3d47d",
"direction": "out",
"log_index": 41,
"amount_raw": "25000000"
}
]
},
"severity": "high"
},
{
"code": "to_only_in_zero_or_dust",
"message": "`to` appears in the history only in zero-value or dust transfers, which anyone can make to plant an address: `from` never paid it and it never sent `from` a real amount.",
"evidence": {
"dust": 0,
"transfers": [
{
"kind": "zero",
"block": 52511209,
"amount": "0",
"tx_hash": "0xa2cdb9f9b3931409e58f5c751db37b918a38bd4cf4d9da11d6573ccb290316ad",
"direction": "out",
"log_index": 7,
"amount_raw": "0"
}
],
"zero_value": 1
},
"severity": "high"
}
],
"decimals": 6,
"rpc_calls": 3,
"to_history": {
"dust": 0,
"paid": false,
"seen": true,
"payments": 0,
"received": 0,
"transfers": [
{
"kind": "zero",
"block": 52511209,
"amount": "0",
"tx_hash": "0xa2cdb9f9b3931409e58f5c751db37b918a38bd4cf4d9da11d6573ccb290316ad",
"direction": "out",
"log_index": 7,
"amount_raw": "0"
}
],
"zero_value": 1,
"in_contacts": false
},
"token_symbol": "USDC",
"matches_total": 1,
"dust_threshold": "0.01",
"contacts_checked": 0,
"dust_threshold_raw": "10000"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"chain",
"from",
"to"
],
"properties": {
"to": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "The recipient about to be paid (0x + 40 hex). Must differ from `from`."
},
"from": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "The sending wallet whose transfer history is read (0x + 40 hex)."
},
"chain": {
"enum": [
"ethereum",
"base",
"robinhood"
],
"type": "string",
"description": "ethereum, base or robinhood (Robinhood Chain, chain id 4663)."
},
"token": {
"type": "string",
"default": "USDC",
"pattern": "^(USDC|USDT|0x[0-9a-fA-F]{40})$",
"description": "USDC (default), USDT, or a token contract address. Only this token's transfers are read. On robinhood pass a contract address."
},
"contacts": {
"anyOf": [
{
"type": "array",
"items": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$"
},
"maxItems": 100
},
{
"type": "null"
}
],
"default": null,
"description": "Up to 100 addresses you trust (your address book); `to` is compared with them too, without any chain read."
},
"dust_threshold": {
"anyOf": [
{
"type": "number",
"maximum": 1000000000000,
"minimum": 0
},
{
"type": "null"
}
],
"default": null,
"description": "Incoming transfers below this many token units count as dust. Default 0.01 for USDC and USDT; off for other tokens unless set; 0 turns it off."
},
"lookback_blocks": {
"type": "integer",
"default": 2000,
"maximum": 2000,
"minimum": 0,
"description": "How many of the latest blocks of history to read (0-2,000; default 2,000, about 67 minutes on Base and 6.7 hours on Ethereum). 0 reads nothing and checks `contacts` only."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"chain",
"from",
"to",
"token",
"risk",
"reasons",
"to_history",
"matches",
"history",
"rules",
"limits"
],
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"risk": {
"enum": [
"high",
"medium",
"low"
],
"type": "string"
},
"chain": {
"type": "string"
},
"rules": {
"type": "object"
},
"token": {
"type": "string"
},
"limits": {
"type": "array",
"items": {
"type": "string"
}
},
"history": {
"type": "object",
"properties": {
"dust": {
"type": "integer"
},
"read": {
"type": "boolean"
},
"blocks": {
"type": "integer"
},
"complete": {
"type": "boolean"
},
"to_block": {
"type": [
"integer",
"null"
]
},
"transfers": {
"type": "integer"
},
"from_block": {
"type": [
"integer",
"null"
]
},
"zero_value": {
"type": "integer"
},
"counterparties": {
"type": "integer"
},
"paid_addresses": {
"type": "integer"
}
}
},
"matches": {
"type": "array",
"items": {
"type": "object",
"required": [
"address",
"paid_by_from",
"transfers"
],
"properties": {
"dust": {
"type": "integer"
},
"address": {
"type": "string"
},
"transfers": {
"type": "array",
"items": {
"type": "object",
"required": [
"tx_hash",
"block",
"direction",
"amount_raw",
"kind"
],
"properties": {
"kind": {
"enum": [
"zero",
"dust",
"value"
],
"type": "string"
},
"block": {
"type": "integer"
},
"amount": {
"type": [
"string",
"null"
]
},
"tx_hash": {
"type": "string"
},
"direction": {
"enum": [
"in",
"out"
],
"type": "string"
},
"log_index": {
"type": [
"integer",
"null"
]
},
"amount_raw": {
"type": "string"
}
}
}
},
"zero_value": {
"type": "integer"
},
"in_contacts": {
"type": "boolean"
},
"paid_by_from": {
"type": "boolean"
},
"prefix_match": {
"type": "integer"
},
"suffix_match": {
"type": "integer"
},
"transfers_total": {
"type": "integer"
}
}
}
},
"reasons": {
"type": "array",
"items": {
"type": "object",
"required": [
"code",
"severity",
"message",
"evidence"
],
"properties": {
"code": {
"type": "string"
},
"message": {
"type": "string"
},
"evidence": {
"type": "object"
},
"severity": {
"enum": [
"high",
"medium",
"info",
"ok"
],
"type": "string"
}
}
}
},
"decimals": {
"type": [
"integer",
"null"
]
},
"rpc_calls": {
"type": "integer"
},
"to_history": {
"type": "object",
"properties": {
"dust": {
"type": "integer"
},
"paid": {
"type": "boolean"
},
"seen": {
"type": "boolean"
},
"payments": {
"type": "integer"
},
"received": {
"type": "integer"
},
"transfers": {
"type": "array",
"items": {
"type": "object",
"required": [
"tx_hash",
"block",
"direction",
"amount_raw",
"kind"
],
"properties": {
"kind": {
"enum": [
"zero",
"dust",
"value"
],
"type": "string"
},
"block": {
"type": "integer"
},
"amount": {
"type": [
"string",
"null"
]
},
"tx_hash": {
"type": "string"
},
"direction": {
"enum": [
"in",
"out"
],
"type": "string"
},
"log_index": {
"type": [
"integer",
"null"
]
},
"amount_raw": {
"type": "string"
}
}
}
},
"zero_value": {
"type": "integer"
},
"in_contacts": {
"type": "boolean"
}
}
},
"token_symbol": {
"type": [
"string",
"null"
]
},
"matches_total": {
"type": "integer"
},
"dust_threshold": {
"type": [
"string",
"null"
]
},
"contacts_checked": {
"type": "integer"
},
"dust_threshold_raw": {
"type": [
"string",
"null"
]
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_h7pxv14u"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
},
"erc20ApprovalGasSponsoring": {
"info": {
"version": "1",
"description": "The facilitator accepts a raw signed approval transaction and will sponsor the gas fees."
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"from",
"asset",
"spender",
"amount",
"signedTransaction",
"version"
],
"properties": {
"from": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the sender."
},
"asset": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The ERC-20 token contract address to approve."
},
"amount": {
"type": "string",
"pattern": "^[0-9]+$",
"description": "Approval amount (uint256)."
},
"spender": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the spender (Canonical Permit2)."
},
"version": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)*$",
"description": "Schema version identifier."
},
"signedTransaction": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$",
"description": "RLP-encoded signed transaction calling ERC20.approve()."
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.002USDC≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0x5938…41720. The signed payment is good for 5 minutes.
- Paid to
- 0x5938…41720
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
2000units
on Polygon · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x5938…41720
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
2000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- RMk9k3…Tcqus
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
2000000000000000units
on eip155:56 · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x5938…41720
- Token contract
- 0x8AC7…d580d
- Payment window
- 5 minutes
2000units
on Arbitrum · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x5938…41720
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
0.002USDC≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0x5938…41720. The signed payment is good for 168 hours.
- Paid to
- 0x5938…41720
- USD Coin contract
- 0x8335…02913
- Payment window
- 168 hours
- As published
- 2000 smallest units
2000units
on Polygon · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x5938…41720
- Token contract
- 0x3c49…c3359
- Payment window
- 168 hours
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "RMk9k3VC8dr4hhjgFh88rGhjAbzfBzHxJJ5n2fTcqus",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
},
{
"asset": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
"extra": {
"name": "USD Coin",
"version": "2",
"assetTransferMethod": "permit2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000000000000000",
"scheme": "exact",
"network": "eip155:56",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 604900
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "GatewayWalletBatched",
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee"
},
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"amount": "2000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 604900
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"to": "0x7A25e8814F0C6D3B2a9e7f15C08D64B2A91EC4d3",
"from": "0x5A0b54D5dc17e0AadC383d2db43B0a0D3E029c4c",
"chain": "base"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"to": "0x7A25e8814F0C6D3B2a9e7f15C08D6…",
"from": "0x5A0b54D5dc17e0AadC383d2db43B0…",
"risk": "high",
"chain": "base",
"rules": {
"paid": "`from` sent the address a non-z…",
"zero_value": "a transfer of 0, either directi…",
"prefix_chars": 4,
"suffix_chars": 4
},
"token": "0x833589fCD6eDb6E08f4c7C32D4f71…",
"limits": [
"Only the transfers of this one…"
],
"history": {
"read": true,
"blocks": 2000,
"to_block": 52512000,
"from_block": 52510001
},
"matches": [],
"reasons": [],
"decimals": 6,
"rpc_calls": 3,
"to_history": {
"paid": false,
"seen": true,
"payments": 0,
"received": 0
},
"token_symbol": "USDC",
"matches_total": 1,
"dust_threshold": "0.01",
"contacts_checked": 0,
"dust_threshold_raw": "10000"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"chain",
"from",
"to"
],
"properties": {
"to": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "The recipient about to be paid (0x + 40 hex). Must differ from `from`."
},
"from": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "The sending wallet whose transfer history is read (0x + 40 hex)."
},
"chain": {
"enum": [
"ethereum",
"base",
"robinhood"
],
"type": "string",
"description": "ethereum, base or robinhood (Robinhood Chain, chain id 4663)."
},
"token": {
"type": "string",
"default": "USDC",
"pattern": "^(USDC|USDT|0x[0-9a-fA-F]{40})$",
"description": "USDC (default), USDT, or a token contract address. Only this token's transfers are read. On robinhood pass a contract address."
},
"contacts": {
"anyOf": [
{
"type": "array",
"items": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$"
},
"maxItems": 100
},
{
"type": "null"
}
],
"default": null,
"description": "Up to 100 addresses you trust (your address book); `to` is compared with them too, without any chain read."
},
"dust_threshold": {
"anyOf": [
{
"type": "number",
"maximum": 1000000000000,
"minimum": 0
},
{
"type": "null"
}
],
"default": null,
"description": "Incoming transfers below this many token units count as dust. Default 0.01 for USDC and USDT; off for other tokens unless set; 0 turns it off."
},
"lookback_blocks": {
"type": "integer",
"default": 2000,
"maximum": 2000,
"minimum": 0,
"description": "How many of the latest blocks of history to read (0-2,000; default 2,000, about 67 minutes on Base and 6.7 hours on Ethereum). 0 reads nothing and checks `contacts` only."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"chain",
"from",
"to",
"token",
"risk",
"reasons",
"to_history",
"matches",
"history",
"rules",
"limits"
],
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"risk": {
"type": "string"
},
"chain": {
"type": "string"
},
"rules": {
"type": "object"
},
"token": {
"type": "string"
},
"limits": {
"type": "array"
},
"history": {
"type": "object"
},
"matches": {
"type": "array"
},
"reasons": {
"type": "array"
},
"decimals": {
"type": [
"integer",
"null"
]
},
"rpc_calls": {
"type": "integer"
},
"to_history": {
"type": "object"
},
"token_symbol": {
"type": [
"string",
"null"
]
},
"matches_total": {
"type": "integer"
},
"dust_threshold": {
"type": [
"string",
"null"
]
},
"contacts_checked": {
"type": "integer"
},
"dust_threshold_raw": {
"type": [
"string",
"null"
]
}
},
"description": "Abridged to fit the header. Full example: the 402 JSON body. Full schema: https://tanod.dev/openapi.json POST /v1/chain/address-poisoning"
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_h7pxv14u"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
},
"erc20ApprovalGasSponsoring": {
"info": {
"version": "1",
"description": "The facilitator accepts a raw signed approval transaction and will sponsor the gas fees."
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"from",
"asset",
"spender",
"amount",
"signedTransaction",
"version"
],
"properties": {
"from": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the sender."
},
"asset": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The ERC-20 token contract address to approve."
},
"amount": {
"type": "string",
"pattern": "^[0-9]+$",
"description": "Approval amount (uint256)."
},
"spender": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the spender (Canonical Permit2)."
},
"version": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)*$",
"description": "Schema version identifier."
},
"signedTransaction": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$",
"description": "RLP-encoded signed transaction calling ERC20.approve()."
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-15 02:45Z
- Last indexed by Roundhouse
- 2026-10-26 17:30Z
- Last enriched (probe, favicon, geo)
- 2026-10-13 21:46Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 19 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Tanod chainpeek and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Tanod%20chainpeek' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://tanod.dev/v1/chain/address-poisoning, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.