# Council of AI — GSPC Board & AI Claim Verification (eunomia-data)

> Council of AI — GSPC Board & AI Claim Verification (eunomia-data) is a paid API for AI agents from councilof.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Fetches the current GSPC board state and verifies signed AI performance/measurement cards via the Council of AI's Eunomia data feed

## Facts

- Endpoint: GET https://councilof.ai/api/eunomia-data
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/council-of-ai-gspc-board-ai-claim-verification-eunomia-data-cde606f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5HhhxAGUQeq_Urn6tOEF7

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-gspc-board-ai-claim-verification-eunomia-data-cde606f7
```

Example prompt: Can you check the Council of AI GSPC board for me and verify this signed measurement card I have — I want to know if the AI claim checks out and what the current board signals show?

## When to prefer this

Use this endpoint when you need to verify a specific signed AI measurement card or read the live GSPC board state from the Council of AI's authoritative Eunomia feed. Prefer this over the free CSOAI door endpoint when you need the full data feed including card_index and first_fine_watch entries, not just board totals. Choose this when cryptographic verification of an AI claim or rank is required and you need the complete signed data structure.

## Known failure modes

- Payment not received — x402 payment of 0.02 USDC required per call or request is rejected
- Invalid or malformed signed card input — card fails verification and returns empty or error block
- GSPC board temporarily unavailable — empty blocks returned with no data
- Network timeout or service unavailability — no response or partial feed
- Unsupported schema version — client expects different schema than csoai.eunomia-data/0.2

## How this service works

Explore the current GSPC measurements, see the published change record, verify signed evidence, and access the supported public feeds.

## Output

Returns a JSON feed with schema 'csoai.eunomia-data/0.2' containing four block types: root (the public signed root), signals, card_index, and first_fine_watch. Empty cells in the board are returned empty. The response reflects the live GSPC board state and can confirm or deny the validity of a submitted signed card.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "feed",
  "blocks": {
   "root": {},
   "signals": {},
   "card_index": {},
   "first_fine_watch": {}
  },
  "schema": "csoai.eunomia-data/0.2"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/council-of-ai-gspc-board-ai-claim-verification-eunomia-data-cde606f7/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)