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nascar_series

Discover NASCAR source series IDs from a published season feed, returning every native series ID and source group key; omit season to use the current UTC year.

Instructions

Discover NASCAR source series IDs. Returns every native series ID and source group key in a published season feed. No marketing label or unavailable season inventory is invented. Omission selects the current UTC calendar year.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "nascar_series"
  }
}

Input Schema

Name	Required	Description	Default
`season`	No	Published native season; omission uses current UTC year

Schema Changelog

Changes observed during successful MCP inspections.

Addedv1.17.20Nov 12, 2026

TDQS

B3.2/5.0

Behavior3/5

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

With no annotations, the description carries the full burden. It usefully discloses data-fidelity behavior ('no marketing label or unavailable season inventory is invented') and the year-default rule, implying a read-only lookup. It does not cover what happens for an unpublished/absent season, pagination, or any auth considerations.

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

Conciseness4/5

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

The purpose is front-loaded in the first sentence and the length is proportionate to a one-parameter lookup tool. The third sentence about invented labels is slightly cryptic phrasing that could be tightened.

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

Completeness4/5

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

For a one-optional-parameter discovery tool with no output schema, the description explains both the input default and the shape of what is returned (native IDs and group keys). Only the empty/not-found season behavior is left unstated.

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% and the single parameter's description already says omission uses the current UTC year. The description repeats that default rather than adding format or edge-case meaning, so baseline 3 applies.

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?

The description names a specific verb and resource: 'Discover NASCAR source series IDs,' and clarifies the output is every native series ID and source group key in a published season feed. It distinguishes the resource from race/feed siblings contextually, but never names a sibling or explicitly contrasts with tools like nascar_races.

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?

There is no explicit guidance on when to use this tool versus the numerous NASCAR siblings (live feed, race weekend, races, season races). Usage is only implied by the word 'Discover' and the ID-mapping framing; no exclusions or prerequisites are stated.

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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