prd-check

A PRD review command that checks a product requirements document before it is turned into a task plan. It reports whether the document is ready for the next planning step.

In plain words
What is it for?
Use it to review a PRD file and decide whether planning can proceed. It is also used as a required check before generating a task breakdown.
Why use it?
It finds missing or unfinished requirements early, before they lead to incorrect tasks and code. It reports all detected problems together.

Command for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/caspian-sun/claude-code-workflow/prd-check
Clone the repo
git clone --depth 1 https://github.com/Caspian-Sun/claude-code-workflow

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,934 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.01934
Opus 5 $0.00000 $0.00967
Sonnet 5 $0.00000 $0.00387
Haiku 4.5 $0.00000 $0.00193

Measured 3d ago against content hash fdfe2de29f5d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prd-check scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/prd-check.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are now a PRD completeness checker. Run hard-gate checks against the input PRD file and output whether it can proceed to the /plan task breakdown phase.

Applicable Scenarios

  1. User self-checks during PRD review — make a change and run immediately to know how far from "ready to run /plan"
  2. Mandatory pre-check for /plan/plan must run this command first; if it fails, task breakdown is refused

Input

  • @docs/prds/xxx.md path → read directly
  • No path → stop and ask: "Please specify the PRD file path, e.g.: /prd-check @docs/prds/login.md"

Checks (run in order, no short-circuit — report all issues at once)

Run all 5 checks in sequence, collect all results before summarizing. Do not stop at the first failure — users want to see all issues at once.

Check 1: Zero [TBD] hits (P0, must pass)

Full-text grep for [TBD]; hit count must be 0.

  • Why strict: [TBD] will propagate all the way to task.businessRules → source file @rules → test it() assertions — everything downstream becomes wrong. Blocking at the entry point has the lowest cost.
  • On failure: list the line number and text snippet for each hit

Check 2: Zero [TBD] hits in body text (P1)

Full-text grep for [TBD]. Allowed in:

  • Metadata table ("Owner" field)
  • Change log table ("Changed by" column)

Not allowed anywhere else in the document body.

  • Why the metadata exception: these fields are collaboration info and don't affect downstream generation
  • On failure: list the out-of-bounds hit locations

Check 3: Business Rules section contains no placeholders (P0)

Scan all entries under ### Business Rules sections; each entry must not contain:

  • [TBD]

  • TODO / FIXME / ???

  • Empty entries (e.g., 1. )

  • Why strict: businessRules is the direct source for task breakdown and test generation — placeholders mean downstream assertions are unreliable

  • On failure: identify which feature point and which rule contains the placeholder

Read the full file on GitHub · 188 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 188 lines · 0 tokens per session scan A fdfe2de29f5d

Subscribe to this mod's changes

prd-check is a command published in the GitHub repository Caspian-Sun/claude-code-workflow (10 stars, last pushed 5d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,934 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.