openspec-test

openspec-test is a skill for Claude Code from digital-stoic-org/agent-skills. It costs 26 tokens per session (1,091 once invoked), scanned B, original, MIT.

A test executor for OpenSpec changes, following the verification plan written in a project's test.md file. OpenSpec is a system for describing software changes and checking them at defined checkpoints.

In plain words
What is it for?
Use it at OpenSpec checkpoints to validate test quality, run the listed checks, write logs, and report the result.
Why use it?
It makes verification follow the project's written test plan instead of relying on improvised checks. It can stop when the plan contains weak or lazy test patterns.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; names the AskUserQuestion tool; mentions Claude Code.

Part of the openspec plugin — 9 skills shipped together

Good fit Use it at OpenSpec checkpoints to validate test quality, run the listed checks, write logs, and report the result.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/digital-stoic-org/agent-skills/openspec-test
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.

Any agent
npx skills add digital-stoic-org/agent-skills --skill openspec-test
Clone the repo
git clone --depth 1 https://github.com/digital-stoic-org/agent-skills

Made for: Claude Code.

Or install openspec, the plugin that ships this one along with the rest of its 9 skills.

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 openspec-test

README.md
[![agentmods](https://agentmods.dev/badge/skills/digital-stoic-org/agent-skills/openspec-test/github.svg)](https://agentmods.dev/skills/digital-stoic-org/agent-skills/openspec-test)
Your own site
<a href="https://agentmods.dev/skills/digital-stoic-org/agent-skills/openspec-test"><img src="https://agentmods.dev/badge/skills/digital-stoic-org/agent-skills/openspec-test/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 openspec-test

Your own site · 80×15
<a href="https://agentmods.dev/skills/digital-stoic-org/agent-skills/openspec-test"><img src="https://agentmods.dev/badge/skills/digital-stoic-org/agent-skills/openspec-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,091 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00026 $0.01091
Opus 5.5 $0.00010 $0.00436
Sonnet 5.5 $0.00005 $0.00218
Haiku 4.5 $0.00003 $0.00109

Measured 1mo ago against content hash 58bd4ceaf53e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

openspec-test scanned grade B with 1 finding 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 1mo 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.

Asks the agent to reveal its instructionsmediumSystem prompt leakage

Directions to print, repeat or translate the system prompt extract configuration the operator did not intend to expose.

| `[manual]` | Display instructions, AskUserQuestion (PASS/FAIL/SKIP) | Human |
openspec/skills/openspec-test/SKILL.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenSpec Test

Generic verification executor for OpenSpec gates. Follows test.md strategy literally — no improvisation.

flowchart LR
    A["Read test.md"] --> B["Validate quality"]
    B --> C{"Lazy patterns?"}
    C -->|Yes| X["BLOCKED"]
    C -->|No| D["Execute verification"]
    D --> E["Write logs"]
    E --> F["Report result"]

    classDef action fill:#C8E6C9,stroke:#388E3C,color:#000
    classDef decision fill:#FFF9C4,stroke:#FBC02D,color:#000
    classDef fail fill:#FFCDD2,stroke:#D32F2F,color:#000
    class A,B,D,E,F action
    class C decision
    class X fail

⚠️ AskUserQuestion Guard

CRITICAL: After EVERY AskUserQuestion call, check if answers are empty/blank. Known Claude Code bug: outside Plan Mode, AskUserQuestion silently returns empty answers without showing UI.

If answers are empty: DO NOT proceed with assumptions. Instead:

  1. Output: "⚠️ Questions didn't display (known Claude Code bug outside Plan Mode)."
  2. Present the options as a numbered text list and ask user to reply with their choice number.
  3. WAIT for user reply before continuing.

checkpoint

Input: $ARGUMENTS = change-id section-number (e.g., add-feature 3)

Workflow:

  1. Read openspec/changes/{change-id}/tasks.md → find ## {section-number}. ...
  2. Read openspec/changes/{change-id}/test.md → verification strategy. If missing: warn + offer /openspec-plan tasks {change-id} or skip (garage only).
  3. If test.md has a **Design**: header → read openspec/changes/{change-id}/design.md for invariants, key flows, and ADRs (informs gate evaluation context)
  4. Validate: Scan for lazy patterns (grep "keyword", [ -f file ], wc -l, echo). If found → BLOCKED with suggestion for functional verification.
  5. Init logs: Create test-logs/gate-{n}-{yyyyMMddHHmm}.yaml (raw, append-per-step) + test-logs/gate-{n}-{yyyyMMddHHmm}.md (summary). Timestamp = run start time. See reference.md §Log Formats.
  6. Execute by type tag (default [auto]):

Read the full file on GitHub · 91 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago First seen · 91 lines · 26 tokens per session scan B 58bd4ceaf53e

Subscribe to this mod's changes

openspec-test is a skill published in the GitHub repository digital-stoic-org/agent-skills (20 stars, last pushed 12d ago), licensed MIT. It adds 26 tokens to every session and 1,091 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks the agent to reveal its instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

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