---
title: "Answer a Bitcoin question deterministically for free"
method: POST
path: "/api/agent/v1/answer"
---

# Answer a Bitcoin question deterministically for free

`POST /api/agent/v1/answer`

## Request

- Base URL: `https://californiabitcoin.org`
- URL: `https://californiabitcoin.org/api/agent/v1/answer`
- Auth: none required

FREE, no account required. Return a concise deterministic answer grounded in maintained Bitcoin knowledge. Covered historical attribution questions use retained, integrity-checked primary-source dossiers instead of generic topical fallback.

## Request body

- object
  - `query` string, required

## Response `200`

Structured deterministic California Bitcoin knowledge result

- object
  - `operation` string, required
  - `productId` string, nullable
  - `access` 'free' | 'paid', required
  - `price` object, required
    - `currency` string
    - `amountCents` integer
  - `result` object, required
  - `paymentReceipt` object

## Other responses

- `400`: Invalid input

---

[API](https://skmtc.dev/californiabitcoin/apis/california-bitcoin-agent-commerce-api.md) · [All operations](https://skmtc.dev/californiabitcoin/apis/california-bitcoin-agent-commerce-api/llms.txt) · [OpenAPI document](https://skmtc.dev/californiabitcoin/apis/california-bitcoin-agent-commerce-api/revisions/13683fe699bc?raw)