# GM Farcaster Q&A API

> GM Farcaster Q&A API is a paid API for AI agents from api.gmfarcaster.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Answers natural-language questions about Farcaster using a curated library of GM Farcaster podcast episodes, returning cited answers with timestamped source links.

## Facts

- Endpoint: POST https://api.gmfarcaster.com/v1/query
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gm-farcaster-q-a-api-725a01a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cT0qdyLV5dOv5IPPvQp_l

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 gm-farcaster-q-a-api-725a01a3 -d '<json body>'
```

Example prompt: Search the GM Farcaster podcast library and tell me what's been said about Farcaster frames — who built them, how they work, and what episodes I can listen to for more context.

## When to prefer this

Choose this endpoint when you need cited, sourced answers specifically from the GM Farcaster podcast catalog — not general web search. Ideal for researchers, journalists, or builders wanting deep, episodic context on Farcaster news, interviews, and analysis that's been curated and indexed from hundreds of episodes. Prefer this over generic search when you want timestamped episode citations rather than raw web results.

## Known failure modes

- Query outside GM Farcaster's coverage returns a low-confidence or empty answer
- Ambiguous queries may return loosely related episode references
- Very recent events not yet covered in the episode library will yield no results
- Queries exceeding 2000 characters are rejected with a validation error
- Network or payment failure returns a 402 or 5xx error

## How this service works

Ask a natural-language question and get a cited answer from the GM Farcaster library — hundreds of episodes of Farcaster news, interviews, and analysis. Returns a grounded answer plus the source episodes with timestamped links.

## Output

A grounded natural-language answer to the posed question, sourced from the GM Farcaster podcast library. Includes references to specific episodes with timestamped links so the user can verify or explore the original content.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "maxLength": 2000,
   "description": "A natural-language question about Farcaster topics, people, or events discussed on GM Farcaster."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gm-farcaster-q-a-api-725a01a3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.gmfarcaster.com](https://www.zero.xyz/host/api.gmfarcaster.com/llms.txt)