cachly is a persistent AI memory platform for developers. It gives AI coding assistants like Claude Code, Cursor, GitHub Copilot and Windsurf a brain that remembers every lesson, fix, and architecture decision — forever. It connects via the MCP (Model Context Protocol) standard and includes 89 tools. Free tier available. Runs on German (EU) servers.

How does cachly work?

Run 'npx @cachly-dev/mcp-server@latest setup' once. The wizard auto-detects every AI editor you have installed (Claude Code, Cursor, Copilot, Windsurf, Cline, Zed) and writes the correct config for each. It then reads your entire git history with brain_from_git and loads years of team knowledge into your Brain before your first session. From that point, sessions start automatically, memory is shared across all your editors simultaneously, and a git post-commit hook teaches cachly from every commit.

Does cachly auto-detect my editors?

Yes. The cachly setup wizard automatically detects Claude Code, Cursor, GitHub Copilot, Windsurf, Cline, Zed, and Continue.dev — any editor that supports MCP. It writes the correct config file for each editor in one pass. You never manually edit JSON config files.

Is memory shared across all my AI editors?

Yes. cachly uses a single Brain that all your AI editors connect to simultaneously. A lesson remembered in Claude Code is instantly available in Cursor and GitHub Copilot. If your team uses different editors, all of you share the same persistent memory pool.

What is brain_from_git?

brain_from_git is a cachly tool that reads your entire git history before your first session and extracts lessons from every commit, PR, and revert. Your AI arrives knowing years of architectural decisions, bug fixes, and team conventions — without you writing a single line of documentation. Zero onboarding.

What is causal_trace?

causal_trace is a cachly tool that traces the history of any file or bug across your entire git history in seconds — replacing 30+ minutes of manual git blame. Describe a problem in plain English. It returns the root cause, the failure chain, and the exact fix that worked — with date, command, and file path.

What is brain_predict?

brain_predict is a cachly tool that scans your Brain for failure patterns before every deploy, migration, or dependency upgrade. It returns probability-weighted warnings based on your team's actual incident history — so you catch the next incident before it happens.

Does cachly work with Claude Code, Cursor, and GitHub Copilot?

Yes. cachly works with Claude Code, Cursor, GitHub Copilot, Windsurf, Cline, Zed, and Continue.dev — anywhere that supports MCP. Run 'npx @cachly-dev/mcp-server@latest setup' to configure all editors in one step. Memory is shared across all editors simultaneously.

Can cachly search memory across languages?

Yes. cachly uses semantic vector embeddings, not keyword search. A lesson stored in German appears when you search in English. A fix documented in Arabic matches a Japanese query about the same bug pattern. Supported languages include English, German, French, Spanish, Italian, Portuguese, Japanese, Chinese (Simplified and Traditional), Korean, Arabic, Hebrew, and more.

How is cachly different from mem0?

mem0 is a memory layer for Python LLM apps and chatbots — great for building AI products. cachly is built specifically for developer tooling: it connects to your AI editor via MCP, learns from your git history automatically, predicts failures before deploy, and gives your whole team shared memory. cachly runs on EU servers and is GDPR-native. For developers using Claude Code, Cursor, or Copilot, cachly is the right choice.

Is cachly GDPR compliant?

Yes. cachly runs exclusively on German servers (Hetzner). All data stays in the EU. No data is shared with third parties. cachly is fully GDPR compliant. An AVV (Auftragsverarbeitungsvertrag / Data Processing Agreement) is available for Business and Enterprise customers.

13,000+ npm installs · Free forever · GDPR · German servers

Your AI forgets everything between sessions. cachly doesn't.

One command gives Claude Code, Cursor, and Copilot permanent memory — every lesson, every fix, every architectural decision. Shared across all your AI editors simultaneously. Automatically. Forever.

$npx @cachly-dev/mcp-server@latest setup

Get started free →How it works ↓

No credit card · Auto-detects every editor · 30 seconds · Free forever

Works with your editor today

Claude CodeCursorGitHub CopilotWindsurfVS Code

13k+

npm downloads · last 30 days

MCP tools included

< 30s

to set up everything

100%

EU data, German servers

What your AI sees every morning

cachly sends a briefing at the start of every conversation. Your AI arrives knowing your stack, your open issues, what your team learned yesterday — and how much time it has already saved you.

# cachly session briefing

▶ brain_recall({ topic: 'auth' })

→ JWT refresh race condition fixed

→ NEVER use RS256 in dev (cert overhead)

→ Auth service down Tuesdays 02:00 UTC

→ PR #847 merged: rate-limit middleware

✓ 4 memories recalled in 38ms

One command. Everything set up.

Run it once. cachly signs you in, detects every editor, writes all configs, and bootstraps your Brain from your entire git history.

Run the setup command

The wizard detects Claude Code, Cursor, GitHub Copilot, Windsurf, Cline, Zed — writes the correct MCP config for each. One browser click to sign in. No credentials in any config file. No OpenAI key required.

Your Brain bootstraps from git

cachly reads your entire git history and extracts lessons from every bug fix, revert, and architecture decision. Your AI knows your codebase the moment setup finishes — before you write a single line.

Your AI arrives pre-briefed — every session

Sessions start automatically on the first tool call. Every conversation begins with a briefing: what you were doing, what's open, what your team learned. Your AI never asks you to explain your stack again.

Four things no other tool does

Memory is the baseline. These are the superpowers.

causal_trace

30 minutes of git blame. One call.

Describe a problem in plain English. cachly walks your Causal Knowledge Graph — typed edges: fixes, requires, causes, contradicts — and returns the root cause, the failure chain, and the exact fix that worked. Including the date and the command.

▶ causal_trace({ file: 'auth.ts' })

Tracing 847 commits across 12 files...

Root cause: RS256 cert rotation every 24h

Introduced: PR #203 (3 months ago)

Affects: login, refresh, SSO flows

✓ 30 min of git blame in 1.2s

▶ brain_predict({ target: 'deploy' })

Analysing 234 past deployments...

HIGH RISK: Tuesday deploys fail 67%

→ DB migration timeout at step 4

→ Fix: run migration separately first

✓ Predicted before you typed git push

brain_predict

Know what breaks before you deploy.

Before every deploy, migration, or dependency upgrade, brain_predict scans your Brain for matching failure patterns and returns probability-weighted warnings. Catch your next incident before it happens.

learn_from_attempts

Every fix becomes permanent knowledge.

A git post-commit hook (installed by setup, automatically) sends every commit to your Brain. Every fix, revert, and deploy teaches cachly forever. Zero manual effort. You never call session_end. You never forget to save a lesson.

▶ learn_from_attempts({ since: '7d' })

Processing 43 commits, 12 reverts...

Learned: useEffect cleanup essential

Learned: Prisma batch > N+1 always

Learned: seed DB before Playwright

✓ 3 patterns auto-added to brain

▶ brain_recall({ q: 'auth fehler' })

Searching across 4 languages...

[EN] JWT refresh race condition fixed

[DE] RS256-Zertifikat: täglich rotiert

[AR] مشكلة المصادقة → OAuth2 PKCE

[JA] ログイン問題: レート制限で解決

✓ Cross-language hits in 41ms

brain_recall

Write in any language. Remember in every language.

cachly uses semantic embeddings, not keyword matching. A lesson stored in German surfaces when you search in English. A fix documented in Arabic matches a Japanese query about the same bug. Your team's knowledge has no language barrier.

All four superpowers are included in the free tier.

No credit card. No config files. Up and running in 30 seconds.

Get started free →

How cachly compares

Most tools store facts. cachly stores why things broke and how they were fixed.

Feature	cachly	CLAUDE.md	mem0	MemGPT
One-command setup
Works across all editors
Memory shared across all editors
Bootstraps Brain from git history
Causal root-cause analysis
Learns from git history automatically
Failure prediction before deploy
Cross-language memory search
Team knowledge sharing
Free tier forever
GDPR / EU servers

What developers say

“causal_trace found the root cause of an auth bug we had been chasing for 3 days. One call. The exact fix from 3 months ago, with the command that worked.”

Marcus K.

Senior Engineer, Berlin

“I stopped explaining my architecture to Claude every morning. It just knows. After two weeks I genuinely cannot imagine working without it.”

Priya S.

Staff Engineer, London

“brain_predict warned us about a k8s namespace race condition before our deploy. Saved us a full incident. That alone paid for the subscription.”

Tobias M.

Platform Engineer, Munich

Simple, honest pricing

Start free. Upgrade when your team grows.

Free

Everything you need to get started — forever.

€0

25 MB Brain storage
All 89 MCP tools
causal_trace & brain_predict
Continuous Learning from git
German servers · GDPR
1 user

Start free — no credit card →

Pro

More storage and team features as you grow.

€7/mo

500 MB Brain storage
Everything in Free
Team Brain — up to 5 users
Memory Crystals (30-session snapshots)
Priority support

Get started →

Business

For teams that need SSO, custom retention, and SLA.

Custom

Unlimited Brain storage
Unlimited team members
SSO / SAML
Custom data retention policy
Dedicated support + SLA
AVV / DPA included

Talk to us →

Frequently asked questions

No. Sessions start and end automatically. The git hook learns from every commit automatically. You never call session_start, session_end, or save a lesson manually — unless you want to. cachly runs entirely in the background.

Your AI is forgetting right now.

Every session that ends without cachly is a lesson lost. Set it up once — your AI remembers forever.

Set up in 30 seconds — free →

Free forever plan· No credit card· EU servers · GDPR