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nascar_race_weekend

Retrieve NASCAR race-weekend results and session rows for a specified season, series, and race ID, preserving source result fields, run types, and timestamps.

Instructions

Get NASCAR race-weekend results and sessions. Returns all native weekend_race and weekend_runs rows for a discovered race, preserving source result fields, run types and timestamps. The race must belong to the selected native season/series; driver biography fields are omitted. No ranking, status inference or local series filtering is performed.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "season": "<season>",
      "series": "<series>",
      "race": "<race>"
    },
    "name": "nascar_race_weekend"
  }
}

Input Schema

Name	Required	Description
`race`	Yes	Source race ID from selected season and series
`season`	Yes	Four-digit native season
`series`	Yes	Source series ID from series/race discovery

Schema Changelog

Changes observed during successful MCP inspections.

Addedv1.17.20Nov 12, 2026

TDQS

A3.7/5.0

Behavior4/5

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

With no annotations present, the description does real work: it discloses that raw native weekend_race and weekend_runs rows are returned with source fields, run types and timestamps preserved; that driver biography fields are dropped; and that no ranking, status inference or local series filtering occurs. That negative-space disclosure is unusually informative, though it says nothing about error cases when the race/season/series combination doesn't match.

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?

Four sentences, front-loaded with the purpose, then return shape, then constraints. Each sentence adds new information; nothing is redundant, though the density makes it slightly harder to scan than a two-sentence version.

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?

No output schema exists, so the description must explain return values — and it does, via 'all native weekend_race and weekend_runs rows' with preserved fields. The main remaining gap is absence of any guidance on what to do if the race doesn't belong to the given season/series.

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%, so the parameter meanings are already documented. The description adds relational context ('the race must belong to the selected native season/series', 'discovered race'), but adds no format or syntax detail beyond the schema's own wording.

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 ('Get NASCAR race-weekend results and sessions') and scopes it to a single discovered race, which separates it from season-level siblings like nascar_races or nascar_season_races. It stops short of explicitly contrasting with those siblings, keeping it at a solid 4 rather than a 5.

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

Usage Guidelines3/5

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

It implies a prerequisite ('a discovered race', 'must belong to the selected native season/series'), which tells the agent it needs IDs obtained elsewhere. However, it never names the discovery tool or states when to prefer this over the calendar/season tools, so guidance is implied rather than explicit.

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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