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Resolve vanity URL to SteamID

resolve_vanity_url
Read-only

Convert a Steam custom vanity profile name into the 17-digit SteamID64 needed for player queries.

Instructions

Convert a Steam custom (vanity) profile name — the part after /id/ in a profile URL — into the 17-digit SteamID64 that the player tools need. Requires STEAM_API_KEY.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
vanityYesVanity name, e.g. 'gabelogannewell' from steamcommunity.com/id/gabelogannewell.
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations confirm read-only and open-world behaviors. The description adds the important requirement of an API key, which supplements the annotations well. No contradiction.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences front-load the purpose and key requirement. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a single-parameter, no-output-schema tool with comprehensive annotations, the description fully covers what, why, and prerequisites.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with a clear description and example. The tool description adds no new information about the parameter beyond the schema, so baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description explicitly states the conversion of a vanity URL to SteamID64, specifying input format and purpose. It clearly distinguishes from sibling tools focused on game/player data retrieval.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description indicates the prerequisite (STEAM_API_KEY) and implies its use as a prerequisite for player tools. However, it does not explicitly state when not to use or list alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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