tanod-dev Txpeek API
txpeek, the pre-transaction check. Risk verdict for an address in about a second, before an agent sends a transaction, approves or buys.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Tanod Dev Txpeek API
version: 0.1.0
contact:
name: Tanod
email: ops@tanod.dev
url: https://tanod.dev
x-refined-note:
- x-guidance differs across the merged source definitions and was not carried
x-tanod-terms: https://tanod.dev/payments/terms.json
description: 'Operations tagged txpeek across 2 of this provider''s published API definitions: chain.json, security.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://chain.tanod.dev
- url: https://security.tanod.dev
tags:
- name: txpeek
description: txpeek, the pre-transaction check. Risk verdict for an address in about a second, before an agent sends a transaction, approves or buys.
paths:
/v1/check/address:
post:
tags:
- txpeek
summary: 'Check address risk: risk check of a wallet or contract address before sending…'
description: 'txpeek: pre-transaction risk check of an address on Base or Ethereum. Returns verdict (low | caution | high | unknown), risk_score 0-100 and plain-language reasons, e.g. upgradeable by a single key, unverified source, mint/blacklist/fee functions, SELFDESTRUCT or DELEGATECALL, an EOA where a contract was expected; plus proxy, token and verification details and the block it was checked at. Price: USD 0.005. Typically under 1 s (p95 about 1 s), at most about 4 s; results are cached for 10 min. If the chain cannot be read the call fails and is not charged. Heuristic, not an audit: the buy/sell (honeypot) simulation of ERC-20 tokens sees one trade now, there is no oracle analysis, and a low verdict is not a clearance.'
operationId: check_address_risk
requestBody:
content:
application/json:
schema:
properties:
address:
type: string
pattern: ^0x[0-9a-fA-F]{40}$
title: Address
description: Address you are about to interact with.
chain:
type: string
enum:
- base
- ethereum
title: Chain
description: Chain of the address.
additionalProperties: false
type: object
required:
- address
- chain
title: CheckRequest
examples:
- address: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
chain: base
example:
address: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
chain: base
required: true
responses:
'200':
description: 'Check result: verdict (low | caution | high | unknown), risk_score 0-100, reasons (code, severity, points, message), proxy, verification, capabilities, token, deep_scan, skipped, checked_at_block, latency_ms. See PRECHECK.md for the scoring table.'
content:
application/json:
schema:
properties:
schema:
type: string
ok:
type: boolean
chain:
type: string
address:
type: string
verdict:
type: string
enum:
- low
- caution
- high
- unknown
risk_score:
type: integer
maximum: 100.0
minimum: 0.0
reasons:
items:
properties:
code:
type: string
severity:
type: string
points:
type: integer
message:
type: string
type: object
type: array
checked_at_block:
type: integer
latency_ms:
type: integer
disclaimer:
type: string
type: object
required:
- schema
- ok
- verdict
- risk_score
- reasons
example:
schema: precheck/1
ok: true
chain: base
address: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913'
verdict: high
risk_score: 65
reasons:
- code: upgradeable_single_key
severity: high
points: 35
message: 'Upgradeable by a single key: the admin 0x... is an EOA and can change this contract''s code at any time.'
checked_at_block: 36000000
latency_ms: 1200
disclaimer: Heuristic pre-check, not an audit. A low score does not guarantee safety.
'402':
description: 'Payment required (x402 v2, USDC; accepts[].network lists the networks offered, Base first). The PaymentRequired object is in the body and, base64, in the PAYMENT-REQUIRED header; accepts[].amount is in USDC atomic units (6 decimals). Also answered to an unpaid request whose input is missing or invalid: then the base price is quoted and `error` says what is wrong. A payment for a different amount than the input''s price is refused with a new 402 (error price_mismatch) and never settled. The free tier is opt-in over HTTP: an unpaid call without the header X-Tanod-Free: 1 gets this 402 and consumes nothing.'
headers:
PAYMENT-REQUIRED:
description: base64 of the same x402 v2 PaymentRequired
schema:
type: string
content:
application/json:
schema:
properties:
x402Version:
type: integer
const: 2
error:
type: string
resource:
properties:
url:
type: string
description:
type: string
mimeType:
type: string
serviceName:
type: string
tags:
items:
type: string
type: array
iconUrl:
type: string
type: object
accepts:
items:
properties:
scheme:
type: string
network:
type: string
amount:
type: string
description: USDC atomic units (6 decimals)
asset:
type: string
payTo:
type: string
maxTimeoutSeconds:
type: integer
extra:
type: object
type: object
type: array
extensions:
type: object
description: 'extensions.bazaar: discovery metadata'
type: object
required:
- x402Version
- resource
- accepts
description: x402 v2 PaymentRequired (also base64 in the PAYMENT-REQUIRED header).
'415':
$ref: '#/components/responses/Response415_902d34495310'
'429':
$ref: '#/components/responses/Response429_b9393deecdf6'
'422':
description: 'With a payment attached: invalid address or chain (not charged).'
content:
application/json:
schema:
properties:
error:
type: object
type: object
'503':
description: The chain could not be read in time, or the facilitator is unavailable (not charged); see Retry-After.
content:
application/json:
schema:
properties:
error:
type: object
type: object
security: []
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.005000'
protocols:
- x402: {}
- mpp:
method: tempo
intent: charge
currency: '0x20C000000000000000000000b9537d11c60E8b50'
x-tanod-pricing:
product: txpeek
service: Tanod txpeek
scheme: exact
network: eip155:8453
asset: USDC
payTo: '0x593857A4a4F619543ea12394137C3004ce841720'
networks:
- eip155:8453
- eip155:137
- solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
- eip155:56
- eip155:42161
circle_gateway: true
prices_usd:
check: '0.005'
free_tier_per_ip_per_day: 30
free_tier_header: 'X-Tanod-Free: 1'
servers:
- url: https://chain.tanod.dev
components:
responses:
Response415_902d34495310:
description: 'Content-Type must be application/json (only when a payment is attached; unpaid: 402).'
content:
application/json:
schema:
properties:
error:
type: object
type: object
Response429_b9393deecdf6:
description: Rate limited; see Retry-After.
content:
application/json:
schema:
properties:
error:
type: object
type: object
x-refined-from:
- chain.json
- security.json
x-agentcash-guidance:
llmsTxtUrl: https://agents.tanod.dev/llms.txt
x-tanod-family:
family: agents
mcp: https://tanod.dev/mcp/agents
main: https://tanod.dev/openapi.json