# Council of AI — Claim-Watch Population Slice

> Council of AI — Claim-Watch Population Slice is a paid API for AI agents from councilof.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Returns a signed, timestamped snapshot of AI-system claims captured across published registries, with cryptographic attestation and an audit trail.

## Facts

- Endpoint: GET https://councilof.ai/api/pop/claim-watch?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/council-of-ai-claim-watch-population-slice-fe0a9f2f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_O-4vnRVlGQactUDQcIFKq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability council-of-ai-claim-watch-population-slice-fe0a9f2f
```

Example prompt: Pull the latest signed claim-watch snapshot from the Council of AI registry and tell me how many AI system claims are currently indexed, along with the as-of date and whether the attestation is signed.

## When to prefer this

Choose this endpoint when you need a cryptographically signed, independently verifiable snapshot of AI system claims from a neutral third-party measurement body. It is the right choice for compliance audits, governance workflows, or any scenario requiring tamper-evident evidence of AI behavior claims. Prefer it over generic web scraping or unofficial aggregators when you need signed attestations with OpenTimestamps proofs and a corrections ledger.

## Known failure modes

- Payment not received or insufficient USDC — returns 402 Payment Required
- Invalid HTTP method (only GET/HEAD/DELETE accepted) — returns 405 Method Not Allowed
- Registry indexing in progress — state field may reflect non-INDEXED status
- Signature field sig_ed25519 is null if the supporting run is unsigned (labelled as such)
- Downstream registry unavailable — rows or source list may be incomplete

## 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

A JSON object containing: the total claim count (n), population slice ID and kind, verbatim registry rows, the as-of date, indexing state, unit description, schema identifier, settlement metadata (payer, network, transaction), a list of source file paths (including OpenTimestamps .ots proofs), and a signed attestation block with schema URL, sha256, payload hash, surface label, and an ed25519 signature (or null if unsigned).

## Request schema (JSON Schema)

```json
{
 "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": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "n": 198,
  "id": "claim-watch",
  "kind": "slice",
  "rows": "<the population rows / artifact bytes, verbatim>",
  "as_of": "2026-09-25",
  "state": "INDEXED",
  "n_unit": "claims captured across the published registries",
  "schema": "csoai.population-door/0.1",
  "settle": {
   "payer": "<0x… or null>",
   "network": "<caip2 or null>",
   "transaction": "<0x… or null>"
  },
  "source": [
   "/spec/claim-maintenance/register.json",
   "/claims/claimreg-ai-assurance-and-settlement-2026-09-23-rev2.json",
   "/claims/claimreg-ai-assurance-and-settlement-2026-09-23-rev2.json.ots",
   "/claims/claimreg-ai-assurance-and-settlement-2026-09-23.json",
   "/claims/claimreg-ai-assurance-and-settlement-2026-09-23.json.ots",
   "/claims/claimreg-hiring-platforms-2026-09-24-rev2.json",
   "/claims/claimreg-hiring-platforms-2026-09-24-rev2.json.ots",
   "/claims/claimreg-hiring-platforms-2026-09-24.json",
   "/claims/claimreg-hiring-platforms-2026-09-24.json.ots",
   "/claims/claimreg-ondo-chainlink-2026-09-22-rev2.json",
   "/claims/claimreg-ondo-chainlink-2026-09-22-rev2.json.ots",
   "/claims/claimreg-ondo-chainlink-2026-09-22.json",
   "/claims/claimreg-ondo-chainlink-2026-09-22.json.ots"
  ],
  "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>"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/council-of-ai-claim-watch-population-slice-fe0a9f2f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from councilof.ai](https://www.zero.xyz/host/councilof.ai/llms.txt)