---
title: "Delegate synchronous Bitcoin specialist work through A2A 1.0 JSON-RPC"
method: POST
path: "/a2a"
---

# Delegate synchronous Bitcoin specialist work through A2A 1.0 JSON-RPC

`POST /a2a`

## Request

- Base URL: `https://californiabitcoin.org`
- URL: `https://californiabitcoin.org/a2a`
- Auth: none required

A2A 1.0 synchronous direct-message delegation over the same maintained California Bitcoin evidence substrate. Supports grounded Bitcoin research, retained primary-source attribution when covered, and free evidence-checkpoint comparison. Streaming, push notifications, persistent tasks, and paid A2A execution are not advertised in v1.

## Headers

- `A2A-Version` '1.0', required

## Request body

- object

## Response `200`

A2A JSON-RPC response

## Other responses

- `400`: Malformed JSON or invalid request envelope

---

[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)