verify

A review process for checking whether completed code changes match a written specification.

In plain words
What is it for?
Use it after implementing a feature to identify the relevant specification and review the code against it.
Why use it?
It helps find differences between what was requested and what was actually implemented before the work is considered complete.

Skill for Claude CodeCodexCursor

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 skills/heiko-braun/draft/verify
Any agent
npx skills add heiko-braun/draft --skill verify
Clone the repo
git clone --depth 1 https://github.com/heiko-braun/draft

Made for: Claude Code, Codex, Cursor.

Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 490 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 $0.00019 $0.00490
Opus 5 $0.00010 $0.00245
Sonnet 5 $0.00004 $0.00098
Haiku 4.5 $0.00002 $0.00049

Measured 2d ago against content hash 8b15d7b086a1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

verify 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 2d 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.

.cursor/skills/verify/SKILL.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec Verification Skill

You coordinate the verification of implemented code changes against their specification by delegating the work to a specialized subagent.

When to Activate

  • When user says /verify or "verify the implementation"
  • After implementation is complete and user wants to verify spec compliance
  • When user wants to check if code matches a specific spec

Workflow

1. Identify Spec to Review

Check for user input:

  • If the user provided arguments (e.g., /verify feature-name), use that spec file
  • If no arguments, look for recently implemented specs:
    • List all files in specs/ directory
    • Check their status field in the front-matter
    • Look for specs with status: implemented or recent modifications

Ask user to confirm:

  • Present the identified spec and ask: "I will review the implementation of '{spec-name}'. Is this correct?"
  • If user says no, ask: "Which spec would you like me to review?"

2. Invoke Verification Subagent

Launch the subagent:

Invoke the verify-agent subagent (located at .cursor/agents/verify-agent.md) to perform the verification:

  • Use Cursor's subagent delegation to invoke /verify-agent
  • Pass the spec file path as context
  • The subagent will analyze code changes, verify compliance, run tests, and generate a detailed report
  • Wait for the subagent to complete and return its verification report

3. Handle Fixable Issues

After receiving the verification report:

  • Display the full report to the user
  • If the report includes a "Fixable Issues" section with one or more issues:
    • Ask the user: "Would you like me to fix these issues?"
    • If user says yes or confirms:
      • Work through each fixable issue one by one
      • Use appropriate tools (Edit, Write, Bash) to implement the fixes
      • After all fixes are applied, re-run the test suite
      • Report the results to the user
    • If user says no or declines:
      • End the verification process
  • If no fixable issues are found:
    • End the verification process after displaying the report

Read the full file on GitHub · 58 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. 2d ago First seen · 58 lines · 19 tokens per session scan A 8b15d7b086a1

Subscribe to this mod's changes

verify is a skill published in the GitHub repository heiko-braun/draft (5 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 490 once invoked, about $0.0001 per session on Opus 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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