Great specs for ai coding agents beat clever prompts. This guide shows how to write an agent coding brief, adapt a prd for vibe coding, define acceptance criteria for ai, and practice spec driven development ai that ships cleaner code.
Why agents fail
Ambiguity. Missing constraints. No definition of done. Agents amplify unclear intent.
Agent coding brief template
- Goal
- User + job
- In scope / out of scope
- Stack constraints
- Files likely touched
- Acceptance tests
- Non-functional needs (a11y, perf)
- Risks
PRD for vibe coding (lightweight)
One page max. Link designs. Include examples of good/bad outputs.
Acceptance criteria for AI
- Observable behaviors
- Edge cases
- Error states
- “Done when…” checklist
Spec driven development AI loop
Spec → plan → implement → verify → revise spec if needed.
Final takeaway
Invest in specs for ai coding agents. A crisp agent coding brief and lean prd for vibe coding with clear acceptance criteria for ai make spec driven development ai your default quality lever.
At The Vibe Developers, specs are how we keep speed honest.
FAQ
How long should a brief be? Usually under one page.
Do tests belong in the spec? Yes—at least happy-path checks.
Store briefs in-repo next to features. Agents and humans should share one source of truth.
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