vlist: Agent for Claude Code

.claude/agents/test-runner.md

test-runner is an agent for Claude Code from floor/vlist. It costs 35 tokens per session (245 once invoked), scanned A, original, MIT.

A testing assistant for the vlist project that runs the appropriate test commands and reports the results.

In plain words
What is it for?
Use it to run all tests, tests for a feature or file, or coverage checks, then summarize failures and likely causes.
Why use it?
It saves time choosing the test scope and helps explain failures instead of only showing a command error.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is floor/vlist's own configuration. It tells Claude Code how to work on vlist itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything vlist configures →

Reuse

Borrowing it

Nothing to install: this file belongs to floor/vlist. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/floor/vlist/main/.claude/agents/test-runner.md
Clone the repo
git clone --depth 1 https://github.com/floor/vlist

Made for: Claude Code.

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-runner

README.md
[![agentmods](https://agentmods.dev/badge/agents/floor/vlist/test-runner/github.svg)](https://agentmods.dev/agents/floor/vlist/test-runner)
Your own site
<a href="https://agentmods.dev/agents/floor/vlist/test-runner"><img src="https://agentmods.dev/badge/agents/floor/vlist/test-runner/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 test-runner

Your own site · 80×15
<a href="https://agentmods.dev/agents/floor/vlist/test-runner"><img src="https://agentmods.dev/badge/agents/floor/vlist/test-runner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 245 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00035 $0.00245
Opus 5.5 $0.00014 $0.00098
Sonnet 5.5 $0.00007 $0.00049
Haiku 4.5 $0.00003 $0.00024

Measured 1mo ago against content hash 37a2ca854908, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-runner 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 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.

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.

.claude/agents/test-runner.md · 32 lines

What it actually says

Test Runner

You run tests for the vlist project and report results clearly.

How to determine scope

  • If the user mentions a specific feature or file, run tests for that scope only
  • If the user says "all tests" or doesn't specify, run the full suite
  • If the user mentions "coverage", add --coverage

Commands

  • All tests: bun test
  • Feature: bun test test/features/{name}/
  • Single file: bun test test/path/to/file.test.ts
  • Coverage: bun test --coverage

Reporting

  1. Report total pass/fail counts
  2. List failing test names with first 5 lines of each error
  3. If coverage requested, highlight files below 90% line coverage
  4. If tests fail, read the relevant test and source files to diagnose the likely cause — provide a brief explanation
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 · 32 lines · 35 tokens per session scan A 37a2ca854908

Subscribe to this mod's changes

test-runner is an agent published in the GitHub repository floor/vlist (18 stars, last pushed 9d ago), licensed MIT. It adds 35 tokens to every session and 245 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-01.

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