For Developers
Describe an app — or paste a detailed spec — and multiple AI agents build it end-to-end. Planning, task delegation, implementation, QA loops, and review happen across coordinated stages. One query to a working project.
Write a natural-language query or feed in a full spec. 0spec generates a multi-agent flow that can build the whole project end-to-end: architecture, delegated implementation tasks, QA loops, and review. Attach mockups or docs with --ref for richer context. Use --chat to refine the plan before agents start working.
Multiple AI agents work in parallel: one plans the architecture, another writes code, a third reviews for bugs. Each agent has the right tools for its job.
Every session produces structured artifacts: plans, code, reviews. Resume any session, inspect stage outputs, or re-run from a specific point.
Describe the feature. Agents plan the architecture, implement it across multiple files, write tests, and produce a review. One command, start to finish.
0spec --query "add OAuth login with Google and GitHub"Point agents at the bug. They read the codebase, trace the issue, implement the fix, verify it doesn't regress, and explain what went wrong.
0spec --query "fix race condition in session manager" --flow fix-reviewAgents plan the refactor, implement it incrementally, run tests at each step, and produce a diff review. Git worktree isolation means your working tree stays clean.
0spec --query "extract auth middleware into shared package"Run multiple review agents in parallel: one checks correctness, another checks security, a third checks test coverage. Each agent has its own skillset — custom tools and instructions tailored to its role.
0spec --task "review last 5 commits" --run-agent reviewer-claudeTrigger 0spec from a GitHub webhook, MCP, or your CI pipeline. Agents review the diff, post inline comments, and flag regressions — automatically on every PR.
0spec --task "review PR #42" --run-agent reviewer-claude --run-agent security-claudeSchedule any flow to run on a recurring basis. Nightly QA sweeps, weekly dependency audits, daily competitive research with open-source models — set it and forget it. Available on Solo and Pro plans.
0spec --query "audit deps for CVEs" --cron "0 3 * * *"Specialization
A planning agent thinks differently than an implementation agent. Separate roles produce better output than one agent doing everything.
Cross-checking
Parallel review agents catch different classes of bugs. Claude finds logic errors. Codex finds integration issues. Together they cover more ground.
Speed
Independent work runs in parallel. A 10-stage flow with 5 parallelizable stages finishes in the time of 6, not 10.
How does it go from a description to a working app?
You provide a query or a spec. The planner agent analyzes it and generates a staged flow with architecture, delegated implementation tasks, QA loops, and review. Agents pass artifacts between stages, iterate when checks fail, and keep driving toward a working, reviewed app. Attach mockups or docs with --ref for richer context and use --chat to refine the plan before execution.
What happens if an agent fails mid-run?
The session state is saved. Run --resume with the session ID and 0spec picks up from the failed stage. No wasted work.
Can I use just Claude without Codex?
Yes. You can run just Claude, just Codex, or mix engines. Plan limits control engine count, providers, and concurrency, not a specific engine choice.
Does it modify my files directly?
By default, each session runs in an isolated git worktree. Your working directory is untouched until you merge the results.