Default plan
Open source
Free
- Discover, deploy and index standards
- Shape spec
AO
AIOS Market editorial rating
Our own assessment, scored on published criteria. Separate from buyer reviews.
5.4 / 10
Open-source frameworkUsefulness: 2 Helpful
Definition and evidence
Skills you trigger one at a time.
Evidence: Four developer skills used one at a time; no scheduling or memory beyond standards files.
- Autonomy weight 15%
- 1 / 10
- Depth weight 15%
- 4 / 10
- Ease of setup weight 15%
- 4 / 10
- Ownership and privacy weight 10%
- 9 / 10
- Value for money weight 15%
- 8 / 10
- Updates and support weight 10%
- 5 / 10
- Security weight 10%
- 7 / 10
- Maturity and traction weight 10%
- 7 / 10
A clean free system of standards and specs for spec-driven software development with AI coding tools, with a paid community around it. It improves how a developer briefs an AI, but it is not an operating system for running a business and does nothing on its own. Useful for developers; skip it if you do not write software.
Security: Passed with warnings. Scanned on 2026-10-05 with ClamAV, YARA, gitleaks and OSV: no malware or leaked secrets found. Our pattern rules flagged 2 items for review, such as a download piped into a shell, installing scheduled jobs.
Rated on
The facts
As stated by the maker. Anything missing is marked Not stated.
- Delivery
- Installs on your machine
- GitHub
- 5,471 GitHub stars
- Runs on
- macOS, Linux
- Works with
- Claude Code, Cursor, Antigravity, Codex
- You'll need
- Not stated
- Install
- Install script run in your project (site asks for email for access)
- Install time
- Not stated
- Difficulty
- Technical
- Company size
- Solo, 2-10
- Updates
- Not self-updating
- Licence
- MIT
- Seats included
- Not stated
- Team sharing
- Not stated
- Integrations
- Not stated
- Data
- Standards stored as files in your repo; email collected on the Builder Methods site for access.
- Support
- Changelog, Builder Methods Pro community, newsletter
- Documentation
- https://buildermethods.com/agent-os
- Industries
- Functions
- Checks
- Security review: not completed. Automated checks, not a guarantee.
What it takes off your plate
Agent OS v3 discovers conventions in your codebase, documents them as standards, injects the relevant ones when you build, and helps shape specs. It works alongside Claude Code, Cursor, Antigravity and other tools. It is aimed at software developers, not general business use.
Read the full description
What it is. Agent OS v3 discovers conventions in your codebase, documents them as standards, injects the relevant ones when you build, and helps shape specs. It works alongside Claude Code, Cursor, Antigravity and other tools. It is aimed at software developers, not general business use.
Pricing. Free and open source (MIT). Builder Methods Pro membership exists, price not shown on the Agent OS page Licence. MIT Where it runs. Claude Code, Cursor, Antigravity, Codex
Facts checked on 2026-10-06 from the maker's own site: https://buildermethods.com/agent-os. Not stated by the maker on that date: installTime, Pro price, privacyPolicyUrl, termsUrl.
What's inside
No agent breakdown has been provided.
Plans
1 plan
Prices are the maker's, as published on their site on Oct 6, 2026. Buy on the maker's site.
Compatible with
Compatibility has not been stated.
Buyer reviews
No buyer reviews yet
Buyer reviews open when the maker sells here.
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