P0 Agent Economy Index X402 Echo API
The X402 Echo API from P0 Agent Economy Index — 1 operation(s) for x402 echo.
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OpenAPI Specification
openapi: 3.2.0
info:
title: P0 Agent Economy Index X402 Echo API
version: 0.2.0
x-logo:
url: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/icon.png
contact:
name: dev Mike (P0)
email: chebotarev.mike@gmail.com
url: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/join
description: 'An open index of the machine-to-machine (agent) economy. x402 routes: ranked discovery over the live x402 service market, every indexed service scored by real 30-day calls and paying-wallet bounds, with a receipt naming the snapshot hash and scoring revision. /economy routes, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry): each protocol''s published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered.'
x-guidance: 'Market data over 25897 listed x402 services, 30-day window. For protocols beyond x402 (Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry)) use /economy, /economy/protocols and /economy/search. For x402, start with GET /search?q=<capability> for ranked services, or /top for the highest-demand ones with callsPerPayer (near 1 means each payer bought once, high means repeat use). /price benchmarks what comparable services charge, /networks breaks demand down by chain, /tags is the capability vocabulary, /count is the market totals, /service looks one service up by URL, /report and /alpha are the category report and the underserved niches, /dataset is the full export. Premium: /dataset/pro ($25) is the enriched full export (demand rank overall and within the top tag, per-seller and per-category aggregates) and /report/weekly ($5) the market report; /dataset/teaser is a free 5% sample in the /dataset/pro row schema. EVERY paid route answers a call with no parameters at all with real data rather than an error, so a blind purchase is never wasted. If you transferred the price to payTo in USDC, USDT or DAI on Base without a payment header, just call the route again within 30 minutes and it serves the data (one transfer, one response); other transfers are never matched automatically: claim them with ?tx=<hash> (on /pay/check use ?payment_tx=<hash> instead, since its tx is the transaction being checked) on Base, Ethereum, Arbitrum or Polygon (USDC, USDT, DAI, WETH, cbBTC, WBTC, USDT0 where that chain has the token, or native ETH/POL), ?btc=<txid> (BTC), ?sol=<signature> (SOL, USDC, USDT), ?tron=<txid> (TRX, USDT TRC-20) or ?stx=<txid> (STX, sBTC); a direct transfer on any other chain, or of a token not named here, cannot be claimed. The two premium routes are the exception and serve a plain transfer only when it is claimed with ?tx=<hash>. /sample, /health and /dataset/teaser are free. Payment is x402 v2, scheme exact, networks eip155:8453, eip155:42161, eip155:137 (USDC); stacks:1 (sBTC); eip155:43114, eip155:10, eip155:42220 (USDC via UltravioletaDAO); eip155:42161 (USDT0), eip155:1 (USDC) via UltravioletaDAO, or MPP (method evm, intent charge, USDC on EVM networks, same prices); a plain transfer on Base, Ethereum, Arbitrum or Polygon also works via ?tx=<hash>.'
servers:
- url: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev
tags:
- name: X402 Echo
paths:
/x402-echo:
get:
summary: 'Use for debugging an x402 client: pay $0.001 in USDC (or USDT0 on Arbitrum) on…'
operationId: x402-echo
parameters: []
security:
- x402: []
- mpp: []
x-payment-info:
protocols:
- x402: {}
- mpp:
method: evm
intent: charge
currency: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
network: eip155:8453
networks: eip155:8453, eip155:42161, eip155:137 (USDC); stacks:1 (sBTC); eip155:43114, eip155:10, eip155:42220 (USDC via UltravioletaDAO); eip155:42161 (USDT0), eip155:1 (USDC) via UltravioletaDAO
asset: USDC
price:
mode: fixed
currency: USD
amount: '0.001'
alternatives:
- assets: USDC, USDT, DAI, ETH, WETH, cbBTC, WBTC
networks: Base, Ethereum, Polygon, Arbitrum
address: '0xECa891e34b3E5873181Fb779672564E198C55354'
- assets: BTC
networks: Bitcoin
address: bc1qqwgyyqv6raq2jnghals2n2aujgwd4e9p64g4hr
- assets: SOL, USDC, USDT
networks: Solana
address: FTbVqWwsfJJ5AuAwNDuCuzdpwCEJahu14HAUgAYcJHuq
- assets: STX, sBTC
networks: Stacks
address: SP34GH04YTB01AMXF4CAQ10Y5B7G4E0119N99W986
- assets: TRX, USDT (TRC20)
networks: TRON
address: TB9rHqT8yLxwdsWCb3zN2nvjc8wLhsUdaQ
responses:
'200':
description: ok
content:
application/json:
schema:
$schema: https://json-schema.org/draft/2020-12/schema
type: object
required:
- ok
- ts
- route
- header
- payment
- checks
- settle
properties:
ok:
type: boolean
ts:
type: string
route:
type: string
header:
type: object
properties:
name:
type: string
bytes:
type: number
encoding:
type: string
payment:
type: object
properties:
x402Version:
type: number
accepted:
type: object
properties:
scheme:
type: string
network:
type: string
amount:
type: string
asset:
type: string
payTo:
type: string
payload:
type: object
properties:
signature:
type: string
authorization:
type: object
properties:
from:
type: string
to:
type: string
value:
type: string
validAfter:
type: string
validBefore:
type: string
nonce:
type: string
checks:
type: object
properties:
decoded:
type: boolean
x402Version:
type: number
scheme:
type: string
network:
type: string
amountMatches:
type: boolean
payToMatches:
type: boolean
assetMatches:
type: boolean
validBefore:
type: string
validAfter:
type: string
withinWindow:
type: boolean
settle:
type: object
properties:
success:
type: boolean
transaction:
type: string
network:
type: string
payer:
type: string
facilitator:
type: string
example:
ok: true
ts: '2026-10-04T12:00:00.000Z'
route: /x402-echo
header:
name: payment-signature
bytes: 824
encoding: base64-json
payment:
x402Version: 2
accepted:
scheme: exact
network: eip155:8453
amount: '1000'
asset: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
payTo: '0xECa891e34b3E5873181Fb779672564E198C55354'
payload:
signature: '0xcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd'
authorization:
from: '0x7EF12BE6000000000000000000000000000000aa'
to: '0xECa891e34b3E5873181Fb779672564E198C55354'
value: '1000'
validAfter: '1791115140'
validBefore: '1791115500'
nonce: '0xefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef'
checks:
decoded: true
x402Version: 2
scheme: exact
network: eip155:8453
amountMatches: true
payToMatches: true
assetMatches: true
validBefore: '2026-10-04T12:05:00.000Z'
validAfter: '2026-10-04T11:59:00.000Z'
withinWindow: true
settle:
success: true
transaction: '0xabababababababababababababababababababababababababababababababab'
network: eip155:8453
payer: '0x7EF12BE6000000000000000000000000000000aa'
facilitator: coinbase-cdp
'402':
description: x402 v2 payment required; nothing is charged when the input is refused
tags:
- X402 Echo
components:
securitySchemes:
x402:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: x402 v2 payment signature; the 402 response tells how
mpp:
type: http
scheme: Payment
description: 'MPP (Machine Payments Protocol) credential, method evm, intent charge: the 402 WWW-Authenticate: Payment challenge tells how'
x-discovery:
protocols:
- x402
- mpp
network: eip155:8453
networks: eip155:8453, eip155:42161, eip155:137 (USDC); stacks:1 (sBTC); eip155:43114, eip155:10, eip155:42220 (USDC via UltravioletaDAO); eip155:42161 (USDT0), eip155:1 (USDC) via UltravioletaDAO
payTo: '0xECa891e34b3E5873181Fb779672564E198C55354'