cachly – Stop re-teaching your AI every morning | Persistent AI Brain for Claude Code, Cursor & Copilot

# cachly — AI Brain for coding assistants > cachly gives AI coding assistants (Claude Code, Cursor, GitHub Copilot, Windsurf, Cline, Zed) a persistent memory that survives across sessions. The Brain stores lessons, past fixes, architecture decisions, and session context — and recalls them in under 10 ms. ## Product cachly is an MCP (Model Context Protocol) server + managed Brain backend. When installed, the AI coding assistant automatically: - Starts a session on editor connect (no manual call needed as of v0.10.9) - Loads the previous session summary, open tasks, and top lessons - Stores what it learns via `learn_from_attempts()` after every fix or deploy - Recalls past solutions via `recall_best_solution()` and `smart_recall()` **Key facts:** - 126 MCP tools (session management, memory, search, causal graph, prediction) - Sessions fire automatically on `ListTools` (editor connection) - Lessons persist across machines, editors, and engineers - Causal Knowledge Graph with Bayesian confidence scores - VS Code extension with offline queue (lessons saved without network) - Free tier, EU servers (Germany), GDPR-native - npm: `@cachly-dev/mcp-server` — 11,953 downloads in first 23 days ## Quick start ```bash npx @cachly-dev/mcp-server@latest autopilot ``` Or add to `.mcp.json`: ```json { "mcpServers": { "cachly": { "command": "npx", "args": ["-y", "@cachly-dev/mcp-server@latest"], "env": { "CACHLY_JWT": "your-api-key", "CACHLY_BRAIN_INSTANCE_ID": "your-instance-uuid" } } } } ``` ## Core MCP tools - `session_start` — 🤖 Auto (fires on editor connect). Returns previous session summary, open tasks, top lessons. - `session_end` — 🤖 Auto (fires on editor disconnect). Generates session summary from git log. - `learn_from_attempts` — ⭐ Most important. Store what worked/failed after every fix or deploy. - `recall_best_solution` — ⭐ Before any non-trivial task. Returns best known approach with con

openapi: "3.1.0" info: title: cachly API version: "1.1.0" description: | cachly AI Brain — persistent memory and managed cache for AI coding assistants and autonomous agents. Give Claude Code, Cursor, Windsurf, GitHub Copilot and any MCP-compatible editor a Brain that remembers lessons, sessions, and code across every session, every machine, and every team member. **Authentication:** - `BearerAuth` – API key or Keycloak JWT in `Authorization: Bearer <token>` heade