# Council of AI — Provider Diff Feed (GSPC Board History)

> Council of AI — Provider Diff Feed (GSPC Board History) is a paid API for AI agents from councilof.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Retrieves the historical diff feed for the GSPC provider board, returning signed root, diffs, and leaf data for AI provider claims verification.

## Facts

- Endpoint: GET https://councilof.ai/api/feeds/provider-diff
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/council-of-ai-provider-diff-feed-gspc-board-history-07cc7032
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0_3ho6dfDW_oE3QW8_hEI

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-provider-diff-feed-gspc-board-history-07cc7032
```

Example prompt: Pull the latest GSPC provider diff feed from the Council of AI so I can see what changes have been made to AI provider claims and whether anything has shifted in the board history.

## When to prefer this

Use this endpoint when you need to retrieve the historical diff log of AI provider claims from the GSPC board — specifically when auditing changes over time, verifying the integrity of provider entries, or tracking what has shifted in the Council of AI registry. Prefer this over the free CSOAI door endpoint when you need diff history and leaf data rather than just current board totals.

## Known failure modes

- Payment not included or invalid x402 payment header — returns 402 Payment Required
- Network or server error returning non-200 response
- Empty diffs array if no changes have occurred since last snapshot
- Malformed or missing schema version in response if feed is misconfigured

## 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 object with kind='history', a signed root object, an array of diffs representing changes to provider entries, a leaves object with current leaf data, and the schema version identifier 'csoai.feeds.provider-diff/0.1'. Empty cells remain empty as per the service's design.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "history",
  "root": {},
  "diffs": [],
  "leaves": {},
  "schema": "csoai.feeds.provider-diff/0.1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/council-of-ai-provider-diff-feed-gspc-board-history-07cc7032/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)