# Bitcoin Signer

> Use this tool when you need to generate Bitcoin addresses and sign transactions securely, solving problems in cryptocurrency wallet integrations and transaction signing workflows. It takes private keys in WIF format and partially signed Bitcoin transactions (PSBTs) as inputs, producing signed transactions as outputs. Ideal for AI assistants requiring Bitcoin transaction capabilities, this tool provides a reliable interface for secure Bitcoin operations through the MCP protocol.

Canonical page: https://skillsregistry.net/skills/cerebrofoundation-bitcoin-signer  
JSON: https://api.skillsregistry.net/v1/skills/cerebrofoundation-bitcoin-signer

## Description

A Bitcoin transaction signing server that enables AI assistants to generate Bitcoin addresses and sign transactions through the MCP protocol. Built by Cerebro Foundation, this implementation provides two key tools: one for generating P2WPKH addresses from private keys in WIF format, and another for signing partially signed Bitcoin transactions (PSBTs). The server uses the @scure/btc-signer library along with secp256k1 cryptography to securely handle Bitcoin operations, making it useful for cryptocurrency wallet integrations and transaction signing workflows, though the authors note it's intended as a play project rather than for production use.

## Trust

- **Trust score (0–1):** 1.00
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** finance
- **Updated:** 2026-09-28

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/cerebrofoundation-bitcoin-signer)
- **Repository:** <https://github.com/cerebrofoundation/mcp-intent>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "cerebrofoundation-bitcoin-signer"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/cerebrofoundation-bitcoin-signer` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/cerebrofoundation-bitcoin-signer/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt