SpecWeave is listed as Open Source. Check https://github.com/anton-abyzov/specweave for the current plan limits, as vendors change pricing frequently.

SpecWeave

Q: What is SpecWeave?

SpecWeave is a code AI tool listed on Use AI Tools. SpecWeave is intent-first development: settle what you want before the code, hand the work between Claude, Codex, Grok and any other tool in two words, and close it with evidence. Running init writes an AGENTS.md that Codex, Grok, Cursor, Gemini and Copilot all read, a two-line CLAUDE.md that imports it, and the skills for Claude Code and Codex. It has six core and five optional skills, registers nested, sibling or external checkouts without moving files, and the optional SpecWithCode desktop app splits one description across workers on your own machines with the spec, evidence and handoff in git.

Q: What is SpecWeave best for?

SpecWeave is commonly used for Switching agents without losing the thread, Keeping the spec and evidence in git, Running several agents on one description. It supports English.

Code🔥 Intermediate✅ Global access

Switching agents without losing the threadKeeping the spec and evidence in gitRunning several agents on one description

Open SourceEnglish

SpecWeave is intent-first development: settle what you want before the code, hand the work between Claude, Codex, Grok and any other tool in two words, and close it with evidence. Running init writes an AGENTS.md that Codex, Grok, Cursor, Gemini and Copilot all read, a two-line CLAUDE.md that imports it, and the skills for Claude Code and Codex. It has six core and five optional skills, registers nested, sibling or external checkouts without moving files, and the optional SpecWithCode desktop app splits one description across workers on your own machines with the spec, evidence and handoff in git.

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🎯 Real-World Use Cases

Start with intent

Describe the work once before any code, then hand it between tools in two words.

Register existing repos

Add nested, sibling or external checkouts without moving files or a second planning root.

Close with evidence

Finish the task with the evidence attached rather than a claim that it is done.

⚖️ Honest Review

✅ Pros

+One AGENTS.md read by many different agents
+Spec, evidence and handoff live in git
+Keeps repositories exactly where they are

⚠️ Cons

−Another layer of process on top of your agent
−The desktop app is early access and Apple silicon only

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CodeOct 26, 2026