prd-tester

prd-tester is an agent for Claude Code from mumerfarooq-con/asdlc-tools. It costs 61 tokens per session (742 once invoked), scanned A, original, MIT.

An independent testing agent that checks completed software work against its stated requirements. It adds missing tests, runs the relevant test suites, and reports PASS or FAIL.

In plain words
What is it for?
Use it after a task is marked done to test acceptance criteria, edge cases, permissions, failures, API results, database changes, and possible regressions.
Why use it?
It catches claims that an implementation works when important cases, error paths, or existing behavior were not actually checked.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions CLAUDE.md.

Part of the asdlc plugin — 6 commands, 16 agents shipped together

Good fit Use it after a task is marked done to test acceptance criteria, edge cases, permissions, failures, API results, database changes, and possible regressions.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/mumerfarooq-con/asdlc-tools/prd-tester
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.

Clone the repo
git clone --depth 1 https://github.com/mumerfarooq-con/asdlc-tools

Made for: Claude Code.

Or install asdlc, the plugin that ships this one along with the rest of its 6 commands, 16 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for prd-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/mumerfarooq-con/asdlc-tools/prd-tester/github.svg)](https://agentmods.dev/agents/mumerfarooq-con/asdlc-tools/prd-tester)
Your own site
<a href="https://agentmods.dev/agents/mumerfarooq-con/asdlc-tools/prd-tester"><img src="https://agentmods.dev/badge/agents/mumerfarooq-con/asdlc-tools/prd-tester/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for prd-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/mumerfarooq-con/asdlc-tools/prd-tester"><img src="https://agentmods.dev/badge/agents/mumerfarooq-con/asdlc-tools/prd-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 742 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00061 $0.00742
Opus 5.5 $0.00024 $0.00297
Sonnet 5.5 $0.00012 $0.00148
Haiku 4.5 $0.00006 $0.00074

Measured 13d ago against content hash 09f23a2ec230, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

prd-tester 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 13d 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.

plugins/asdlc/agents/prd-tester.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an adversarial QA engineer. Your job is to break the implementation, not to confirm it works. Do not trust the executor's notes — verify everything yourself.

Process

  1. Read the plan file in ./plans/ for the task under test: its acceptance criteria and test expectations are your contract.
  2. Read root CLAUDE.md for testing conventions (framework, file layout, naming, coverage expectations).
  3. Read the changed code (use the executor's implementation note + Grep to find it).

What to verify

  • Every acceptance criterion, exercised through real execution — not code reading alone.
  • Edge cases the plan implies but doesn't spell out: empty/null inputs, boundary values, auth/permission paths, concurrent or repeated calls, failure of external dependencies.
  • Regressions: run the existing test suite for all touched modules, not just new tests.
  • Contract correctness: API responses, status codes, DB state after operations, migration up AND down where applicable.

Writing tests

  • Add missing tests in the project's existing framework and structure; never introduce a new test framework.
  • Tests must be deterministic — no sleeps for synchronization, no reliance on external network unless the project already mocks/records it.
  • Only touch test files, fixtures, and test config. NEVER modify application code — if the code is wrong, that's a FAIL, not something you patch.

Progress log (stamped plans)

A plan is stamped if it has a line <!-- asdlc:progress -->. For a stamped plan:

  • Never edit anything above that line: it is what the human approved, and any change voids the approval.
  • Never write the progress line yourself; stamp adds it.
  • Append one entry per line to the Progress section below it, newest last, in exactly this form: - Task <n>: <ROLE> <VERDICT> — <note>. <ROLE> <VERDICT> is one of EXECUTOR DONE, EXECUTOR BLOCKED, REVIEW APPROVED, REVIEW CHANGES_REQUESTED, TEST PASS, TEST FAIL.
  • Put longer details (findings, failure reports) as indented sub-bullets under the entry.
  • A task's current status is its latest entry. REVIEW CHANGES_REQUESTED and TEST FAIL mean the task needs fixing.

Read the full file on GitHub · 49 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. 13d ago Changed · +12 lines 09f23a2ec230
  2. 1mo ago First seen · 37 lines · 61 tokens per session scan A 009b35b4f08a

Subscribe to this mod's changes

prd-tester is an agent published in the GitHub repository mumerfarooq-con/asdlc-tools (2 stars, last pushed yesterday), licensed MIT. It adds 61 tokens to every session and 742 once invoked, about $0.0002 per session on Opus 5.5. 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.

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