Aider
Open-source terminal AI pair-programming CLI that edits your git repo and auto-commits changes.
Last verified:
Aider is a free, open-source (Apache 2.0) command-line AI pair-programming tool that edits files directly in a local git repository and auto-commits changes with generated messages. It is model-agnostic and bring-your-own-API-key, working with Claude, GPT, Gemini, DeepSeek, and local models via Ollama/LM Studio, with no account, subscription, or hosted component required. As of mid-2026 Aider does not ship official MCP (Model Context Protocol) support in its config reference; community-built MCP bridge projects exist but are unofficial, and prior MCP pull requests to the core project were closed unmerged.
Pricing
| Tier | Price | Key features |
|---|---|---|
| Open Source | $0/usage | Terminal-based pair programming, 100+ languages, Git auto-commit, Codebase mapping, Voice-to-code, Linting/testing hooks |
Source: https://aider.chat
Agent-readiness
- Discoverability
- 40/100
- Machine-readable content
- 80/100
- Programmatic access
- 95/100
- MCP / agent support
- 15/100
- Self-serve transactability
- 90/100
- Transparency
- 60/100
Security & compliance
- SSO / SAML
- Not publicly documented
- Encryption at rest
- Not publicly documented
- Encryption in transit
- Yes
- Audit log
- Not publicly documented
- Pentest report
- Not publicly documented
"Not publicly documented" means Crail found no public evidence either way — not a confirmed absence. See our methodology.
FAQ
Does Aider have a free tier?
Yes, Aider offers a free tier or free trial.
Can you buy Aider without talking to sales?
Yes, Aider can be purchased self-serve without a sales call.
Does Aider have an official MCP (Model Context Protocol) server?
Not as of 2026-07-26 — no official MCP server was found.
What people are saying on Reddit & Hacker News
Real, publicly-posted discussion — not a Crail-verified review. Always linked back to the original post so you can read it in context.
“If you want to have some fun check out aider.chat. They actually log how much of each version was built by aider itself: https://github.com/Aider-AI/aider/releases”
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“I just started playing with OpenCode over the weekend after working with aider and aider-ce, and I like a lot of things about it, though I miss some aider features.”
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“There is Aider (aider.chat), and it has been there for couple years now. Great tool.”
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Reviews
No reviews yet for Aider. Be the first to submit a verified review.
Methodology & disclosure
Data verified via agent crawled, last checked 2026-07-26. Agent-readiness methodology version crail-ar-v0.1. No vendor payment influences these scores — see our methodology page.