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Council of AI — x402-Bazaar Population Slice
x402
Council of AI — x402-Bazaar Population Slice is a paid API for AI agents from councilof.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-30).
Fetches a signed, verifiable snapshot of x402 API marketplace listings indexed by Council of AI's independent measurement system
Price / call$0.01
Success—
StatusUnknown
How this service works
We measure how AI systems behave against frozen, published tests and publish checkable evidence. Issued measurement cards are signed; unsigned supporting runs are labelled. Read the live board and corrections ledger.
Output
Returns a JSON object containing: a slice ID ('x402-bazaar'), kind ('slice'), verbatim population rows of x402 marketplace listings, an as_of timestamp, an INDEXED state flag, source artifact file references, settlement info (payer address, network, transaction hash), and a signed attestation card with SHA-256 hash, ed25519 signature, and schema reference. The 'n' field is null (not zero) because the artifact refuses a total count across overlapping index frames.
Example use cases
Auditing x402 marketplace listings
“Fetch me the current Council of AI population snapshot for the x402 bazaar — I want to verify the attestation signature and see which APIs are listed in the index right now.”
Tracking x402 API directory changes
“Get me the latest x402-bazaar population slice from Council of AI, including the source artifacts and the as_of timestamp, so I can compare it to last week's snapshot.”
Building a verified x402 API catalog
“Pull the signed population slice from the Council of AI x402-bazaar index — I need the rows data and the ed25519 attestation to confirm the listing data hasn't been tampered with.”
Technical details
Endpoint
GEThttps://councilof.ai/api/pop/x402-bazaar?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a cryptographically attested, independently verifiable snapshot of x402 marketplace API listings — particularly when auditability, tamper-evidence, or signed provenance of directory data matters. Prefer this over generic API directories when you need the ed25519 signature and SHA-256 hash for downstream verification, or when you specifically need the Council of AI's independent measurement provenance rather than a self-reported listing.
Side effects
- Payment not received or insufficient — returns 402 with payment requirements
- Invalid HTTP method (e.g. POST) — only GET, HEAD, DELETE accepted
- Attestation signature is null if signing has not yet occurred for that slice
- Source artifacts temporarily unavailable — stale or missing rows data
- Network or CAIP-2 chain unavailable — settle fields return null
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"n": null,
"id": "x402-bazaar",
"kind": "slice",
"rows": "<the population rows / artifact bytes, verbatim>",
"as_of": "2026-09-17T05:48:05Z",
"state": "INDEXED",
"n_unit": "listings per index frame (frames overlap; the artifact refuses a total, so n is null — not 0)",
"schema": "csoai.population-door/0.1",
"settle": {
"payer": "<0x… or null>",
"network": "<caip2 or null>",
"transaction": "<0x… or null>"
},
"source": [
"/interop/agent-population-2026-09-17.json",
"/interop/x402-door-census-2026-09-16.json"
],
"attestation": {
"schema": "https://councilof.ai/schema/card-v0.json",
"sha256": "<hex>",
"payload": {
"kind": "csoai.population.slice/0.1",
"rows_sha256": "<hex>"
},
"surface": "population.slice",
"sig_ed25519": "<hex or null>"
}
}
}Tags
x402
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