steam-mcp (brunolm/steam-mcp) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: there is no public source to read and no endpoint we can reach, so there is nothing for us to inspect. No publisher has claimed this listing.
MCP server for the Steam Web API, exposing your game library, playtime, achievements, friends, wishlist, and the Steam store to MCP clients over stdio.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
How we verified
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brunolm
Source: Glama
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Install from
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
STEAM_ACCESS_TOKENWishlist writes only User access token for add_to_wishlist / remove_from_wishlist.STEAM_API_KEYedit .env and set + STEAM_DEFAULT_STEAM_IDSTEAM_COUNTRY_CODENo Store region for prices. Defaults to US.STEAM_DEFAULT_STEAM_IDedit .env and set STEAM_API_KEY +STEAM_LANGUAGENo Language for store text and achievement names. Defaults to english.Tool annotations
2/22 tools have annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
20/22 tools missing one or more hints — get_player_achievements (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_global_achievement_percentages (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_game_schema (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +17 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
18/22 tool handlers declare input schemas (82%)
Declare an inputSchema with zod/joi/yup on every tool definition.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tests exist
No test files found
Add tests that exercise each declared tool.
Production dependencies are patched
0 critical, 1 high severity in production deps — @modelcontextprotocol/sdk@1.0.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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