OpenAPI Diff
Edified Lab sells pay-per-call APIs and market-signal data to AI agents over x402 (HTTP 402 + USDC on Base) — no subscriptions, no API-key paperwork, just a call and a settled payment.
OtherLiveeip155:8453Exactvia cdp
OpenapiApiBreaking-changesDeveloper-toolsx402
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.011
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-19 15:32Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x5037546753d64F77A6fA95B6f85659B6a4A7F6FDThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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.
0.011USDC≈ $0.011 USD
on Base · exact scheme
Pay 0.011 USDC on Base to 0x5037…7F6FD. The signed payment is good for 10 minutes.
- Paid to
- 0x5037…7F6FD
- USD Coin contract
- 0x8335…02913
- Payment window
- 10 minutes
- As published
- 11000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USDC",
"chainId": 8453,
"version": "2",
"challengeId": "cdp-e6dab269613cf83cb0a291e965b2eba8",
"spenderAddress": "0x402085c248EeA27D92E8b30b2C58ed07f9E20001",
"assetTransferMethod": "permit2"
},
"payTo": "0x5037546753d64F77A6fA95B6f85659B6a4A7F6FD",
"amount": "11000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"base_spec": "{\"openapi\":\"3.0.0\",\"info\":{\"title\":\"Widget\",\"version\":\"1.0\"},\"paths\":{}}",
"revised_spec": "{\"openapi\":\"3.0.0\",\"info\":{\"title\":\"Widget\",\"version\":\"1.1\"},\"paths\":{}}"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"json": [],
"text": "No breaking changes detected.",
"action": "compare",
"payload": "internal",
"breaking": false,
"base_bytes": 120,
"revised_bytes": 145,
"breaking_changes": []
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"allOf": [
{
"anyOf": [
{
"required": [
"base_spec"
]
},
{
"required": [
"base_openapi"
]
}
]
},
{
"anyOf": [
{
"required": [
"revised_spec"
]
},
{
"required": [
"revised_openapi"
]
}
]
}
],
"properties": {
"base_spec": {
"oneOf": [
{
"type": "string",
"maxLength": 262144
},
{
"type": "object"
},
{
"type": "array"
}
]
},
"path_count": {
"type": "integer",
"maximum": 5000
},
"base_openapi": {
"oneOf": [
{
"type": "string",
"maxLength": 262144
},
{
"type": "object"
},
{
"type": "array"
}
]
},
"revised_spec": {
"oneOf": [
{
"type": "string",
"maxLength": 262144
},
{
"type": "object"
},
{
"type": "array"
}
]
},
"revised_openapi": {
"oneOf": [
{
"type": "string",
"maxLength": 262144
},
{
"type": "object"
},
{
"type": "array"
}
]
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"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": [
"payload",
"action",
"text",
"json",
"breaking"
],
"properties": {
"json": {
"oneOf": [
{
"type": "array"
},
{
"type": "object"
}
]
},
"text": {
"type": "string"
},
"action": {
"type": "string",
"const": "compare"
},
"payload": {
"type": "string",
"description": "Opaque internal registry id on the paid response. Discovery capability label is 'openapi_diff' (serviceName/tags); do not treat that label as this field."
},
"breaking": {
"type": "boolean"
},
"base_bytes": {
"type": "integer"
},
"revised_bytes": {
"type": "integer"
},
"breaking_changes": {
"type": "array"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-19 15:32Z
- Last indexed by Roundhouse
- 2026-09-24 08:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-19 15:45Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 405
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. 5 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 OpenAPI Diff 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=OpenAPI%20Diff' 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://api.edifiedlab.com/v1/tools/openapi/compare, 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.