verify-changes

verify-changes is a skill for Claude Code, Codex from phuonghx/aim-cli. It costs 92 tokens per session (962 once invoked), scanned A, original, MIT.

A verification guide for proving that a code change works by running it and observing its real output, rather than relying on source inspection or compilation alone.

In plain words
What is it for?
Use it after features, bug fixes, refactors, API changes, or UI changes to choose and perform a suitable check.
Why use it?
It prevents a change from being treated as complete when it has only been assumed to work. The verification method is matched to the change, such as rerunning a failed case or calling an API.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it after features, bug fixes, refactors, API changes, or UI changes to choose and perform a suitable check.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/phuonghx/aim-cli/verify-changes
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 phuonghx/aim-cli --skill verify-changes
Clone the repo
git clone --depth 1 https://github.com/phuonghx/aim-cli

Made for: Claude Code, Codex.

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 verify-changes

README.md
[![agentmods](https://agentmods.dev/badge/skills/phuonghx/aim-cli/verify-changes/github.svg)](https://agentmods.dev/skills/phuonghx/aim-cli/verify-changes)
Your own site
<a href="https://agentmods.dev/skills/phuonghx/aim-cli/verify-changes"><img src="https://agentmods.dev/badge/skills/phuonghx/aim-cli/verify-changes/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 verify-changes

Your own site · 80×15
<a href="https://agentmods.dev/skills/phuonghx/aim-cli/verify-changes"><img src="https://agentmods.dev/badge/skills/phuonghx/aim-cli/verify-changes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 92 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 962 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 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 $0.00092 $0.00962
Opus 5 $0.00046 $0.00481
Sonnet 5 $0.00018 $0.00192
Haiku 4.5 $0.00009 $0.00096

Measured 8d ago against content hash a1647557fe8a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

verify-changes scanned grade A 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 8d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://localhost:3000/api/orders | jq .
aim/templates/aim-agents/skills/verify-changes/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Verify Changes

Existing code and working code are not the same thing. Reading a function tells you what it looks like; running it tells you what it does. This skill is about closing that gap with evidence you can point to.

The distinction that matters

Inspecting:  "the function is right there, so it should work"      -> not verified
Assuming:    "the types line up, so it must be correct"            -> not verified
Executing:   "I ran it; here is the output; it works, because X"   -> verified

Only the third kind counts. Everything else is a hypothesis.

How to verify

1. Pin down what changed

  • Which files did you touch?
  • What behavior should now be different?
  • What was the original requirement or bug?

2. Match the change to a method

Kind of change How you prove it works
Bug fix Re-run the exact scenario that failed; confirm it no longer does
New feature Drive the feature end to end; confirm the output matches intent
Refactor Run the existing tests; confirm nothing regressed
API change Call the endpoint; confirm the response shape and status
UI change Render the component; confirm what appears on screen
Config change Load the app with it; confirm the new values take effect
Build / infra Run the build or pipeline; confirm it completes

3. Actually run it

# JavaScript / TypeScript project
npm run build                 # does it compile?
npm test                      # do the tests pass?
npm run dev                   # does it boot?

# Smoke-test a single module
node -e "require('./src/parser'); console.log('module loads')"

# Hit an HTTP endpoint
curl -s http://localhost:3000/api/orders | jq .

# Exercise a CLI
python -m mytool --check

4. Write down the evidence

## Verification

Changed
- src/orders/total.ts — corrected rounding on multi-currency carts

Ran
- npm run build, npm test, manual curl against /api/orders

Result
- Build: compiled clean
- Tests: 58 passed, 0 failed
- Runtime: server boots; /api/orders returns the expected JSON
- Edge case: empty cart returns 0, not NaN

Still open
- Load behavior under concurrency not yet measured

Read the full file on GitHub · 125 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. 8d ago First seen · 125 lines · 92 tokens per session scan A a1647557fe8a

Subscribe to this mod's changes

verify-changes is a skill published in the GitHub repository phuonghx/aim-cli (1 stars, last pushed 2mo ago), licensed MIT. It adds 92 tokens to every session and 962 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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