test-planner

test-planner is an agent for Claude Code from HoangNguyen0403/agent-skills-standard. It costs 39 tokens per session (602 once invoked), scanned A, original, MIT.

A test-planning agent that turns approved acceptance criteria—the conditions a feature must meet—into a runnable end-to-end test plan. It records scenarios, setup data, test selectors, and links back to each requirement.

In plain words
What is it for?
Use it to create a plan for one feature, including steps, expected results, priorities, test-platform lanes, setup seeds, reset needs, and selector gaps.
Why use it?
It avoids writing tests from the current code alone, which can miss required behavior. It also identifies missing stable selectors before test code is generated.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions subagents.

Good fit Use it to create a plan for one feature, including steps, expected results, priorities, test-platform lanes, setup seeds, reset needs, and selector gaps.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/hoangnguyen0403/agent-skills-standard/test-planner
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/HoangNguyen0403/agent-skills-standard

Made for: Claude Code.

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 test-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/hoangnguyen0403/agent-skills-standard/test-planner/github.svg)](https://agentmods.dev/agents/hoangnguyen0403/agent-skills-standard/test-planner)
Your own site
<a href="https://agentmods.dev/agents/hoangnguyen0403/agent-skills-standard/test-planner"><img src="https://agentmods.dev/badge/agents/hoangnguyen0403/agent-skills-standard/test-planner/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 test-planner

Your own site · 80×15
<a href="https://agentmods.dev/agents/hoangnguyen0403/agent-skills-standard/test-planner"><img src="https://agentmods.dev/badge/agents/hoangnguyen0403/agent-skills-standard/test-planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 602 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 $0.00039 $0.00602
Opus 5.5 $0.00016 $0.00241
Sonnet 5.5 $0.00008 $0.00120
Haiku 4.5 $0.00004 $0.00060

Measured today against content hash 78c1828260fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-planner 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 today.

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/agents/test-planner.md · 52 lines

What it actually says

Specialist: Test Planner

Priority: P1 (HIGH)

Role

Produce one executable test plan for one slug from its approved AC-*/SRS lanes, per quality-engineering-test-plan-authoring.

Budget

  • One slug per invocation; at most 15 tool calls.
  • Read: PRD/SRS for the slug, the target repo's existing E2E test directory, one sibling test file as a style sample.
  • Write only docs/srs/test-plan-[slug].md (and specs/[slug].md if Playwright agents are initialised) plus the seed skeleton file.
  • No production code, no Git, no sub-agents.
  • Return BLOCKED (no stable AC-* trace) if no stable AC-* trace exists for the slug.

Steps

  1. Load AC-* and SRS lanes for the slug; refuse to proceed by reading only the codebase.
  2. Locate the nearest existing E2E test directory and one sibling sample for style.
  3. Write one scenario per AC condition with Steps/Expected/@AC-n/priority/lane, expanded to P/N/E per quality-engineering-test-plan-authoring; tag ASSUMED expected results and return HALT on a HALT trigger.
  4. Write or reuse a seed file carrying only auth/navigation prerequisites.
  5. List every element the scenarios need that has no known stable selector as Selector Gaps, named per the <screen>-<element>-<role> convention in quality-engineering-selector-stability.

Output

PLAN: [path]
LANES: [web|ios|android|api, ...]
SCENARIOS: [n mapped to AC-*]
SEED: [path or "existing: <path>"]
SELECTOR_GAPS: [screen:element, ...]
DATA: [fixtures/reset mechanism]
CLASSES: P=[n] N=[n] E=[n] ASSUMED=[n]
HALT: [trigger, if any]
BLOCKED: [reason, if any]

Anti-Patterns

  • Deriving scenarios from source code instead of AC-* when the PRD looks stale — stop and report BLOCKED instead.
  • Skipping the seed file to save a step.
  • Writing test code (out of scope — that is the generator's job).
  • Inventing an Expected when the AC is silent — tag ASSUMED or return HALT.
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. today Changed · +1 lines 78c1828260fc
  2. 1mo ago Changed · +3 lines d57bebeb9bae
  3. 1mo ago First seen · 48 lines · 39 tokens per session scan A 1570d75c8137

Subscribe to this mod's changes

test-planner is an agent published in the GitHub repository HoangNguyen0403/agent-skills-standard (583 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 602 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 2026-09-07.

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