Spec-driven development, hard budget guardrails, and stakes-based tiering. Built for solo founders and small teams who want AI leverage without AI chaos.
Also available as a VSCode Extension
Most AI coding tools solve the typing problem. SpecAg solves the engineering process problem.
Pre-call hook chain stops API calls before they happen. Daily/weekly token caps with automatic pause. Your bill never surprises you.
No code without a spec. No commit without a spec reference. AI agents have no memory between sessions — the spec IS their memory.
Tier by project stakes, not user count. A HIPAA app with 20 users needs more rigor than a meme app with 10M users.
When work is blocked: T+1 nudge, T+3 escalation, T+7 hard pause. Zero token spend on blocked paths until a human responds.
1 human Advisor + Lead Dev (AI) + Associate (AI) + PO Agent (AI). All coordination over Slack. No meetings. No Jira.
6 default hooks (DailyCap, WeeklyCap, WorkWindow, PausedRegistry, PCMode, BudgetGuard). Add your own without touching core code.
Interactive setup wizard, project scanner, spec explorer sidebar, sprint dashboard, and spec snippets — all inside your editor.
Add SpecAg to existing projects. The scanner detects modules, languages, and frameworks, then generates spec drafts automatically.
We don't pretend to be unique in every dimension. We're unique where it matters.
| Feature | BMAD | Spec Kit | MetaGPT | SpecAg |
|---|---|---|---|---|
| Agent roles (PM, Dev, etc.) | Yes | No | Yes | Yes |
| Spec-driven development | Yes | Yes | Partial | Yes |
| Token cost enforcement (hard stop) | No | No | No | Yes |
| Cascading blocker SLA (T+7 hard pause) | No | No | No | Yes |
| Stakes-based tier system | No | No | No | Yes |
| Sustainable pace ceiling | No | No | No | Yes |
| Pluggable hook architecture | No | Partial | No | Yes |
Choose the rigor level that matches your project's real-world consequences.
Learning, experiments, tutorials. Full open-source access.
Real side projects with real users. Solo owner, shipping to production.
Paying users, real revenue, reputation on the line. Full enforcement.
T4 Enterprise (RBAC, SSO, compliance hooks, audit export) is on the roadmap. Get notified →
Running a full SpecAg team (1 human + 3 AI agents) for a year.
| Item | Annual Cost |
|---|---|
| VPS (4 vCPU / 16GB) | ~$144 |
| AI APIs (primary + fallback) | ~$280 |
| Total | ~$424/year ($35/mo) |
Cost enforcement makes this a ceiling, not a guess.
Install SpecAg in 60 seconds. Free, open-source, MIT licensed.