Codex Test

Codex Test is a skill for Claude Code, Codex from dante01yoon/codex-mcp-bridge. It costs 26 tokens per session (281 once invoked), scanned A, original, MIT.

A test-generation workflow that reads source files, identifies the project's testing framework, and asks Codex to write unit tests.

In plain words
What is it for?
Use it to generate tests covering normal cases, edge cases, and error cases, then place them in the project's test structure.
Why use it?
It removes the manual work of figuring out the test setup and creating tests that match the existing project.

Skill for Claude CodeCodex

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/dante01yoon/codex-mcp-bridge/codex-test
Any agent
npx skills add dante01yoon/codex-mcp-bridge --skill codex-test
Clone the repo
git clone --depth 1 https://github.com/dante01yoon/codex-mcp-bridge

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 Codex Test

README.md
[![agentmods](https://agentmods.dev/badge/skills/dante01yoon/codex-mcp-bridge/codex-test.svg)](https://agentmods.dev/skills/dante01yoon/codex-mcp-bridge/codex-test)
Your own site
<a href="https://agentmods.dev/skills/dante01yoon/codex-mcp-bridge/codex-test"><img src="https://agentmods.dev/badge/skills/dante01yoon/codex-mcp-bridge/codex-test.svg" alt="Measured on agentmods" 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 281 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 $0.00026 $0.00281
Opus 5 $0.00013 $0.00140
Sonnet 5 $0.00005 $0.00056
Haiku 4.5 $0.00003 $0.00028

Measured 4d ago against content hash b11bea760357, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Codex Test 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 4d 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.

examples/claude-skills/codex-test/SKILL.md · 30 lines

What it actually says

Generate tests for the specified code using Codex as a sub-agent.

Steps

  1. Read the target file(s) specified in the arguments.
  2. Detect the project's testing framework by checking existing test files, config, and dependencies.
  3. Call mcp__codex-bridge__consult_codex_with_stdin with:
    • stdin_content: the full content of the target file(s)
    • prompt: "Generate comprehensive unit tests for this code. Include edge cases, error cases, and happy path. Use [FRAMEWORK] as the testing framework. Return only the test code."
    • format: "code"
    • timeout: 180
    • sandbox: "read-only"
  4. Replace [FRAMEWORK] with the detected framework (pytest, vitest, jest, etc.).
  5. Write the tests to the appropriate test file location following the project's test structure.

$ARGUMENTS

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. 4d ago First seen · 30 lines · 26 tokens per session scan A b11bea760357

Subscribe to this mod's changes

Codex Test is a skill published in the GitHub repository dante01yoon/codex-mcp-bridge (2 stars, last pushed 6mo ago), licensed MIT. It adds 26 tokens to every session and 281 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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