Pyfile x402 API
One-read dead drop: hand a credential between two agents where neither should hold it first. POST the secret, pay once, receive a read_url that works exactly one time — the first read destroys the value before responding. Max 16KB.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.002 USDC on Base to 0xA437…D5561. The signed payment is good for 1 minute.
- Paid to
- 0xA437…D5561
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 2000 smallest units
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
- 0xA437…D5561
- Token contract
- 0x3c49…c3359
- Payment window
- 1 minute
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
- 0xA437…D5561
- Token contract
- 0xaf88…e5831
- Payment window
- 1 minute
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
- nano_3…pz4ss
- Token contract
- XNO
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xA43774fD2e867FC45b782456d78F135a215D5561",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xA43774fD2e867FC45b782456d78F135a215D5561",
"amount": "2000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 60
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xA43774fD2e867FC45b782456d78F135a215D5561",
"amount": "2000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 60
},
{
"asset": "XNO",
"extra": {
"work": "required",
"asset": "XNO",
"workThreshold": "fffffff800000000"
},
"payTo": "nano_3uojbn47b5xqcbs4yibbasamn8aeyqxgyi1z8peogwtdn6z3kagjanjpz4ss",
"amount": "5752000000000000000000000000",
"scheme": "exact",
"network": "nano:mainnet",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"choices": [
{
"message": {
"role": "assistant",
"content": "hi"
}
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {}
}
}
},
"output": {
"type": "object"
}
}
}
},
"rail-hint": {
"info": {
"why": "Zero network fees, no price floor, sub-second finality — Nano is the true metered price for a machine-to-machine call.",
"docs": "https://railhint.com",
"cheapest": "nano:mainnet",
"bootstrap": "pip install feeless402 && nano-pay init && nano-pay claim https://feeless402.com"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"info"
],
"properties": {
"info": {
"type": "object"
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-22 14:29Z
- Last indexed by Roundhouse
- 2026-09-24 07:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-22 13:15Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 404
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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Pyfile x402 API 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=Pyfile%20x402%20API' 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://pyfile-agent.taile3ff35.ts.net:10000/secret/drop, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.