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trenerok

oura-mcp-server

by trenerok

get_vo2_max

Retrieve VO2 max estimates from Oura Ring data to assess cardiovascular fitness. Filter by start and end dates and paginate results for tracking trends.

Instructions

Get VO2 max estimates. Returns VO2 max values which indicate cardiovascular fitness level.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
end_dateNo
next_tokenNo
start_dateNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.4/5.0
Behavior2/5

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

With no annotations, the description carries the full burden. 'Get' implies a read, but it does not disclose that results are paginated (a next_token parameter exists), how date ranges default, or any permission/rate-limit behavior. It adds little beyond restating the metric name.

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

Conciseness3/5

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

Very short and front-loaded, which is good, but the second sentence ('Returns VO2 max values which indicate cardiovascular fitness level') is largely restatement rather than useful detail, so the space is not well spent.

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

Completeness2/5

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

No annotations, no output schema, and three undocumented parameters: the description should explain date filtering and pagination to be callable correctly, and it does neither. For a paginated, date-ranged list endpoint this is a significant gap.

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

Parameters1/5

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

Schema coverage is 0% and all three parameters (end_date, next_token, start_date) are undocumented in the schema. The description supplies no explanation of date formats, range semantics, or pagination tokens, so it completely fails to compensate.

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

Purpose4/5

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

States a specific verb and resource: 'Get VO2 max estimates' for cardiovascular fitness. However, it does not distinguish itself from the sibling get_vo2_max_by_id, leaving the agent to infer that this is the un-scoped list version.

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

Usage Guidelines2/5

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

No guidance on when to use this versus get_vo2_max_by_id, nor any mention of date-range filtering or pagination as a use condition. The agent must infer the list-vs-single distinction from the name alone.

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