Openparliament Ca

List Committees

list_committees

Read-onlyIdempotent

List Canadian House of Commons committees from OpenParliament.ca, optionally filtered by session. Returns committee slug, name, and acronym for use with list_committee_meetings.

Example tool call

This call uses example arguments supplied in the tool’s input schema.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "limit": 30,
      "session": "44-1"
    },
    "name": "list_committees"
  }
}

Input Schema

Name	Required	Description	Default
`limit`	No
`offset`	No
`session`	No

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedMay 22, 2026

addedInput schema / examples

Added value: +[
+  {
+    "limit": 30,
+    "session": "44-1"
+  }
+]

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "description": "List of House committees with pagination",
+  "type": "object"
+}

First observedMay 13, 2026

TDQS

A3.7/5.0

Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, and no destructive actions. The description adds context about the data source (OpenParliament.ca) and return fields, but doesn't disclose additional behavioral traits like rate limits or data freshness.

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 sentences with no redundant information. First sentence states purpose and filter, second sentence specifies return fields and intended use. Every word adds value.

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?

Given the presence of output schema and comprehensive annotations, the description is mostly complete. It explains source, return fields, and linkage to sibling. However, it lacks details on pagination and session format.

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

Parameters2/5

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

Schema description coverage is 0% with three parameters (limit, offset, session). The description only mentions session as optional filter; limit and offset are not explained, leaving pagination behavior unclear.

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 clearly states the tool lists Canadian House of Commons committees, specifying the verb 'List' and the resource 'committees'. It also differentiates from siblings by mentioning the output is for use with list_committee_meetings.

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?

The description implies usage when you need committee slugs for meetings, but it does not explicitly state when to avoid this tool or contrast with sibling list tools like list_politicians. Guidance is present but not directive.

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

All Openparliament Ca tools Inspect

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