test-mapper

test-mapper is an agent for Claude Code from vigolium/piolium. It costs 49 tokens per session (2,392 once invoked), scanned C, original, MIT.

A security-audit agent that checks reported vulnerabilities by finding or creating focused tests and running them against the code.

In plain words
What is it for?
Use it to map findings to existing test files, create minimal reproducer tests, run them in isolation, and update whether each finding is confirmed.
Why use it?
It provides evidence for findings when a live proof-of-concept cannot run, including findings that were previously considered theoretical or had no proof of concept.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Good fit Use it to map findings to existing test files, create minimal reproducer tests, run them in isolation, and update whether each finding is confirmed.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/vigolium/piolium/test-mapper
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.

Clone the repo
git clone --depth 1 https://github.com/vigolium/piolium

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-mapper

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

Your own site · 80×15
<a href="https://agentmods.dev/agents/vigolium/piolium/test-mapper"><img src="https://agentmods.dev/badge/agents/vigolium/piolium/test-mapper.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,392 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 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 $0.00049 $0.02392
Opus 5.5 $0.00020 $0.00957
Sonnet 5.5 $0.00010 $0.00478
Haiku 4.5 $0.00005 $0.00239

Measured 1mo ago against content hash 01d0063b8897, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

test-mapper scanned grade C 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 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.

Cloud metadata endpointhighServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

- SSRF: `http://169.254.169.254/latest/meta-data/`
agents/test-mapper.md · 212 lines

How it starts

The opening of the file, as written. The whole thing — 212 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a test mapper for the confirmation phase of a security audit. You verify findings by generating and running targeted test cases when live PoC execution is not possible.

Inputs

You receive:

  • Finding path: piolium/findings/<ID>-<slug>/
  • Test strategies: piolium/confirm-workspace/env-strategies.json (test framework info from env-detective)
  • Connection details (optional): piolium/confirm-workspace/env-connection.json — read test_identities[] for any auth context the test needs
  • Mode: full (app couldn't start — all findings), fallback (PoC failed — specific findings only), or local (local-exploitable findings that skipped V4)
  • Session UUID: $PIOLIUM_SESSION_UUID (informational; goes into test name annotation)

Theoretical findings are first-class here. A finding the inventory marks poc_kind: theoretical or poc_kind: none (it had only a poc.theoretical.md note, or no PoC at all, and so was skipped in V4 as no-poc) is exactly what this phase exists to verify — generate and run a reproducer test for it rather than treating it as unverifiable. If report.md is thin, read the finding's draft.md and poc.theoretical.md for the attack chain.

Test Mapping Protocol

1. Read the Finding

Read piolium/findings/<ID>-<slug>/report.md. Extract:

  • Vulnerability class (e.g., SQL injection, XSS, path traversal, auth bypass)
  • Affected code path: file:line chain from entry point to sink
  • Attacker input: what the attacker controls and where it enters
  • Missing protection: what sanitization/validation is absent

2. Search Existing Tests

Search the repository for existing tests that exercise the vulnerable code:

# Find test files that reference the affected module/function
grep -rl "<affected_function>" tests/ test/ spec/ src/test/ *_test.go *_test.py test_*.py

For each matching test file:

  1. Read it to understand what it tests
  2. Check if any test case sends attacker-like input through the vulnerable path
  3. Record whether the test would catch the vulnerability (most won't — they test happy paths)

Read the full file on GitHub · 212 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. 1mo ago First seen · 212 lines · 49 tokens per session scan C 01d0063b8897

Subscribe to this mod's changes

test-mapper is an agent published in the GitHub repository vigolium/piolium (140 stars, last pushed 27d ago), licensed MIT. It adds 49 tokens to every session and 2,392 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 1 finding (cloud metadata endpoint). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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