Longhand

Name: Longhand
Availability: InStock
Author: wynelson94

Supports UI

by wynelson94

Lossless local memory for Claude Code, storing every tool call and thinking block verbatim on disk.

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Works in:claude

Exposes:Tools

View on GitHub Docs

What it does

Longhand provides a persistent, local-first memory layer for Claude Code. Instead of relying on AI summaries or large context windows, it indexes the raw JSONL session files that Claude Code writes to disk, enabling semantic and forensic recall of past work.

Tools

Longhand exposes 15 tools to an MCP client, including:

recall: Performs fuzzy natural-language recall of past fixes or decisions.
search: Semantic search across all events with filters for tools, files, and time.
get_file_history: Retrieves every edit made to a specific file across all sessions.
replay_file: Reconstructs the exact state of a file at a specific point in time.
find_episodes: Searches for problem-to-fix sequences in history.

Installation

Install via pip and run the setup commands:

pip install -e .
longhand ingest
longhand mcp install

Supported hosts

Confirmed supports: claude (via Claude Code and Claude Desktop).

Quick install

pip install -e . && longhand mcp install

Information

Pricing: free
Published: 4/12/2026
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