About Purse First
Purse First is an MCP server published by amarbel-llc in the Developer Tools category: claude hook that rewrites tool use to requested MCP's.
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Install
git clone https://github.com/amarbel-llc/purse-firstThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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README
purse-first
A package framework for bundling CLIs, MCP servers, and skills into composable, Nix-built packages for humans and agents like Claude Code.
Architecture
purse-first has three layers:
| Layer | Description |
|---|---|
| Protocol | A convention for Nix derivations to declare Claude Code capabilities via well-known paths under share/purse-first/ |
| CLI | The purse-first binary — implements tool routing (hooks), marketplace generation, installation, and validation |
| Libraries | go-mcp and rust-mcp — building blocks for creating MCP servers that conform to the protocol |
Package Flavors
Packages come in three flavors:
| Flavor | Description | Examples |
|---|---|---|
| MCP package | Ships an MCP server with optional tool mappings | grit, get-hubbed, lux |
| Skill package | Ships skills only | robin, tap-dancer, bob |
| MCP + Skill package | Ships both MCP server and skills | chix |
Current Packages
- grit (MCP) — Git operations via MCP: stage, commit, push, log, blame, and more
- get-hubbed (MCP) — GitHub CLI wrapper via MCP: issues, pull requests, and repos
- lux (MCP) — LSP multiplexer via MCP: hover, definitions, references, and symbols
- chix (MCP + Skill) — Nix MCP server and skills for Claude Code: build, evaluate, search, and manage flakes
- robin (Skill) — BATS integration testing skill with bundled assertion libraries, sandcastle isolation, and justfile patterns
- tap-dancer (Skill) — TAP-14 writer libraries (Go + Rust) and skill for producing spec-compliant TAP output
- bob (Skill) — purse-first's own skill package: plugin-mcp, context-saving, and go-cli-framework skills
Getting Started
purse-first packages are built with Nix and installed via the purse-first CLI. A marketplace is an aggregation of packages into a single Claude Code plugin (the .claude-plugin/ output).
Installation
# Install purse-first CLI
nix profile install github:friedenberg/purse-first
# Generate a marketplace from packages
purse-first marketplace generate --config marketplace-config.json --output ~/.claude/plugins/marketplace
For the complete protocol specification, see docs/purse-first-protocol.md.
Development
This is a Nix-based project. See the project-specific CLAUDE.md for build commands and architecture details.
# Build the project
just build
# Run tests
just test
# Format code
just fmt
README copy captured when this server was indexed; it may lag the repository. The original is authoritative.