Fireproof MCP

Name: Fireproof MCP
Author: Fireproof

by Fireproof

Immutable ledger database with live sync, versioning, and zero server setup via MCP

database Node.js Intermediate Self-hostable No API key

⭐ 200 stars 📅 Updated: 1mo ago

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Description

MCP server for Fireproof, an immutable ledger database with live synchronization capabilities. Store and query JSON documents with automatic versioning, CRDT-based conflict-free sync, and cryptographic verification — all without any server setup. Fireproof runs entirely in the client with optional cloud sync, making it perfect for AI-assisted prototyping, local-first applications, and scenarios where data integrity and auditability matter. Every change is tracked in an immutable Merkle clock, so you get built-in version history and tamper-proof data storage. No API keys, no database credentials, no infrastructure to manage.

✅ Best for

Developers who want instant database capabilities for prototyping or local-first apps without any infrastructure setup

⏭️ Skip if

You need a production-grade relational database with complex queries, joins, and transactions

💡 Use cases

Rapid prototyping of data-driven applications with AI assistants
Building local-first apps with automatic sync across devices
Storing and versioning JSON documents with full audit trail
Creating tamper-proof data records with cryptographic verification

👍 Pros

✓ Zero setup required — no API keys, no credentials, no server to deploy
✓ Immutable ledger with built-in version history and cryptographic integrity
✓ CRDT-based sync means conflict-free collaboration across multiple clients
✓ Lightweight TypeScript implementation, runs anywhere Node.js runs

👎 Cons

✗ Not suited for large-scale relational data with complex joins
✗ Document-oriented model may not fit traditional SQL-based workflows
✗ Smaller ecosystem compared to established databases like PostgreSQL or MongoDB

🔧 Exposed tools (5 tools)

Tool	Category	Description
list_databases	discovery	List all available Fireproof databases
get_document	read	Retrieve a document by its ID
query_documents	read	Query documents using filters and indexes
put_document	write	Store or update a JSON document in a Fireproof database
delete_document	write	Soft-delete a document from the database

⚡ Installation

Prerequisites:

• Node.js v18+

Check Claude Code documentation to configure this MCP server.

💡 Tips & tricks

Start with put_document and get_document for simple CRUD operations. Use list_databases to see all Fireproof databases on the system. Documents are JSON-based, so structure them with consistent fields for easier querying. The immutable ledger means deletes are soft — data is always recoverable from history.

🔄 Alternatives

basic-memory

MCP server — editorial content pending

Similar functionality

sqlite-mcp