test-tdd

test-tdd is a command for Claude Code from guanyang/open-agent-hub. It costs 32 tokens per session (267 once invoked), scanned A, original, MIT.

A command that finds and runs the tests related to files changed in a project. It supports common test layouts and runners.

In plain words
What is it for?
Use it to check unit or integration tests for modified files and see whether they pass. If they fail, it suggests using a debugging add-on.
Why use it?
It removes the need to search for matching tests and remember the right command after making code changes.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the open-agent-hub plugin — 102 skills, 3 commands, 5 agents, 6 MCP servers shipped together

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 commands/guanyang/open-agent-hub/test-tdd
Clone the repo
git clone --depth 1 https://github.com/guanyang/open-agent-hub

Made for: Claude Code.

Or install open-agent-hub, the plugin that ships this one along with the rest of its 102 skills, 3 commands, 5 agents, 6 MCP servers.

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-tdd

README.md
[![agentmods](https://agentmods.dev/badge/commands/guanyang/open-agent-hub/test-tdd.svg)](https://agentmods.dev/commands/guanyang/open-agent-hub/test-tdd)
Your own site
<a href="https://agentmods.dev/commands/guanyang/open-agent-hub/test-tdd"><img src="https://agentmods.dev/badge/commands/guanyang/open-agent-hub/test-tdd.svg" alt="Measured on agentmods" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 267 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 5.1 $0.00032 $0.00267
Opus 5 $0.00016 $0.00133
Sonnet 5 $0.00006 $0.00053
Haiku 4.5 $0.00003 $0.00027

Measured 6d ago against content hash ce04fa928a50, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

test-tdd 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 6d 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.

commands/test-tdd.md · 19 lines

What it actually says

Slash Command: /test-tdd

Core Objective

Locate and execute the test suites corresponding to modified files.

Steps for the Agent

  1. Identify Modified Code: Run git status or git diff --name-only to identify source code files that have changed.
  2. Find Matching Tests: Search for matching test files in the project. For example:
    • foo.js ➔ search for foo.test.js, foo.spec.js, test_foo.js in test/, spec/, or local directories.
  3. Deduce Test Command: Determine the correct command runner based on package.json scripts or file types (e.g., npm test -- <file>, npx jest <file>, pytest <file>, go test <file>).
  4. Execute: Run the test command and display the execution results.
  5. Loop Strategy:
    • If tests fail, suggest invoking agent-debugger to inspect stack traces.
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. 6d ago First seen · 19 lines · 32 tokens per session scan A ce04fa928a50

Subscribe to this mod's changes

test-tdd is a command published in the GitHub repository guanyang/open-agent-hub (959 stars, last pushed today), licensed MIT. It adds 32 tokens to every session and 267 once invoked, about $0.0002 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 2026-08-30.