index

index is a skill for Claude Code from Karzone/TestAtlas. It costs 56 tokens per session (565 once invoked), scanned A, original, MIT.

A command-line tool that builds or rebuilds TestAtlas's local map of a .NET solution from its source files.

In plain words
What is it for?
It helps index C# projects and feature files, report files the indexer could not parse, and refresh the map after edits.
Why use it?
It provides the data needed for TestAtlas queries when the map is missing or out of date, without restoring packages, compiling, or using the network.

Skill for Claude Code

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

Part of the testatlas plugin — 3 skills, 1 hook, 1 MCP server shipped together

Good fit It helps index C# projects and feature files, report files the indexer could not parse, and refresh the map after edits.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/karzone/testatlas/index
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 Karzone/TestAtlas --skill index
Clone the repo
git clone --depth 1 https://github.com/Karzone/TestAtlas

Made for: Claude Code.

Or install testatlas, the plugin that ships this one along with the rest of its 3 skills, 1 hook, 1 MCP server.

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 index

README.md
[![agentmods](https://agentmods.dev/badge/skills/karzone/testatlas/index/github.svg)](https://agentmods.dev/skills/karzone/testatlas/index)
Your own site
<a href="https://agentmods.dev/skills/karzone/testatlas/index"><img src="https://agentmods.dev/badge/skills/karzone/testatlas/index/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 index

Your own site · 80×15
<a href="https://agentmods.dev/skills/karzone/testatlas/index"><img src="https://agentmods.dev/badge/skills/karzone/testatlas/index.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 565 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 $0.00056 $0.00565
Opus 5.5 $0.00022 $0.00226
Sonnet 5.5 $0.00011 $0.00113
Haiku 4.5 $0.00006 $0.00056

Measured 13d ago against content hash 2f1b0b7d631a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

index 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 13d 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-plugin/skills/index/SKILL.md · 46 lines

What it actually says

Build the TestAtlas map

The map is one SQLite file, codemap.db, at the project root. Building it is a syntax-only pass: no restore, no compilation, no network, seconds on most solutions.

  1. Check the tools are there: command -v testatlas testatlas-mcp (PowerShell: Get-Command testatlas, testatlas-mcp). If either is missing, offer these first and run them when the person agrees (they need the .NET 8 SDK or later and reach only nuget.org):

    dotnet tool install --global TestAtlas.Cli
    
    dotnet tool install --global TestAtlas.Mcp
    
  2. Find the solution file. If there is exactly one *.sln at the project root, use it. If there are several, ask which one; do not guess.

  3. From the project root run:

    testatlas index <Solution>.sln --output codemap.db
    

    The summary line reports projects, classes, methods, step definitions, features, scenarios and any diagnostics. Diagnostics are files the indexer could not parse; report them, they are not fatal.

  4. Check the server sees the new map: call the stats tool. TestAtlas.Mcp 0.1.12 and later looks for the map on every call and re-reads a rebuilt one, so this answers with the counts just printed. If it still answers "no map loaded", look at whether the message names a directory:

    • It names no directory: the server is 0.1.11 or older and read the map only at startup. /mcp → reconnect testatlas (or restart the session) loads the map now; offer dotnet tool update --global TestAtlas.Mcp so it does not happen again.
    • It names a directory other than this project root: the server was started somewhere else, and the map must be built there or passed to it by path.
  5. Offer the HTML drill-down of what was just indexed: /testatlas:report.

Do not commit codemap.db unless the repository already tracks one; it is a build artefact and the repo's .gitignore usually excludes *.db.

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. 13d ago Changed · +11 lines 2f1b0b7d631a
  2. 20d ago First seen · 35 lines · 56 tokens per session scan A c48efc47ecf7

Subscribe to this mod's changes

index is a skill published in the GitHub repository Karzone/TestAtlas (3 stars, last pushed 6d ago), licensed MIT. It adds 56 tokens to every session and 565 once invoked, about $0.0002 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 2026-09-27.

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