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steam-mcp: Command for Claude Code

.claude/commands/steam/achievements.md

achievements is a command for Claude Code from stealthsrc/steam-mcp. It costs 14 tokens per session (314 once invoked), scanned A, original, MIT.

A command that compares a player's unlocked achievements in a Steam game with the percentage of players worldwide who unlocked each one. Achievements are in-game milestones recorded by Steam.

In plain words
What is it for?
Use it to review a player's achievement progress, rank unlocked achievements by rarity, and list locked achievements from easiest to hardest based on global rates.
Why use it?
It shows overall progress and identifies which completed milestones are rare or which remaining ones are easier to pursue.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

This is stealthsrc/steam-mcp's own configuration. It tells Claude Code how to work on steam-mcp 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 steam-mcp configures →

not rated 1repo 2mo ago A scan 14 tokens original MIT
View source ↗ stealthsrc/steam-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to stealthsrc/steam-mcp. 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/stealthsrc/steam-mcp/main/.claude/commands/steam/achievements.md
Clone the repo
git clone --depth 1 https://github.com/stealthsrc/steam-mcp

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 achievements

README.md
[![agentmods](https://agentmods.dev/badge/commands/stealthsrc/steam-mcp/achievements/github.svg)](https://agentmods.dev/commands/stealthsrc/steam-mcp/achievements)
Your own site
<a href="https://agentmods.dev/commands/stealthsrc/steam-mcp/achievements"><img src="https://agentmods.dev/badge/commands/stealthsrc/steam-mcp/achievements/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 achievements

Your own site · 80×15
<a href="https://agentmods.dev/commands/stealthsrc/steam-mcp/achievements"><img src="https://agentmods.dev/badge/commands/stealthsrc/steam-mcp/achievements.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 314 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 $0.00014 $0.00314
Opus 5.5 $0.00006 $0.00126
Sonnet 5.5 $0.00003 $0.00063
Haiku 4.5 $0.00001 $0.00031

Measured 2mo ago against content hash 0812913869fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

achievements 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 2mo 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/commands/steam/achievements.md · 37 lines

What it actually says

Show achievement progress for: $ARGUMENTS

The argument is in the format <steamid_or_vanity> <game_name>. Extract the first word/token as the steamid or vanity URL, and the rest as the game name query.

Do the following steps in order:

  1. Use steam_search_game with the game name part to find the AppID (limit: 3)
  2. In parallel, use the top AppID result to call:
    • steam_get_achievements with the player steamid, the AppID, language="english", status="all"
    • steam_get_global_achievement_stats with the AppID

Then present the results:

Achievements - {Game Name} - {Player}

Progress: X/Y (Z%)

Cross-reference each unlocked achievement with its global unlock rate from steam_get_global_achievement_stats. Highlight the rarest unlocked achievements (lowest global %) with a note like "rare - only X% of players".

Show two tables:

Unlocked

| Achievement | Unlocked on | Global % | Rarity | (sorted by global % ascending - rarest first)

Still locked

| Achievement | Global % | (sorted by global % descending - easiest first, so the player knows what to do next)

At the end, add a link to the achievements page:

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. 2mo ago First seen · 37 lines · 14 tokens per session scan A 0812913869fb

Subscribe to this mod's changes

achievements is a command published in the GitHub repository stealthsrc/steam-mcp (1 stars, last pushed 2mo ago), licensed MIT. It adds 14 tokens to every session and 314 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 2026-08-31.

Analytics and metricsGame developmentTypeScriptclaudemcpsteamsteam-api
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