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List Rubrics

list_rubrics
Read-only

Lists every rubric in a Canvas course with titles, points, criteria, and ratings. Fetches all pages and errors on incomplete results rather than silently truncating.

Instructions

List every rubric defined in a course, returning each rubric's title, points_possible, and criteria/ratings. Fetches every page (100 per request) and fails with a 'Results are incomplete' error instead of silently truncating. Use get_rubric to fetch one rubric by ID once you have it, get_rubric_assessment for a specific student's completed assessment rather than the rubric definition, or create_rubric to add a new one. Requires the manage_rubrics permission in the course, so most students cannot call this.

Input Schema

NameRequiredDescriptionDefault
course_idYesThe Canvas course ID

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv1.18.15
    • addedInput schema / properties / course_id / anyOf
      Added value: +[
      +  {
      +    "exclusiveMinimum": 0,
      +    "maximum": 9007199254740991,
      +    "type": "integer"
      +  },
      +  {
      +    "pattern": "^[1-9][0-9]{0,18}$",
      +    "type": "string"
      +  }
      +]
    • removedInput schema / properties / course_id / type
      Removed value: -"number"
  2. Changed1 schema field changedv1.18.11
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
  3. First observedv1.18.0

TDQS

A4.7/5.0
Behavior5/5

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

Adds substantial behavior beyond annotations: it describes returned fields, pagination at 100 per request, failure with a "Results are incomplete" error rather than truncation, and the manage_rubrics permission requirement.

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?

Four efficient sentences: purpose/return shape first, then pagination/error behavior, then alternatives, then permission. Every sentence contributes and the most important information is front-loaded.

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 read-only listing tool with no output schema, the description covers return fields, pagination, failure behavior, permission constraints, and sibling alternatives. Nothing essential for correct invocation is missing.

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 single course_id parameter is already documented. The description adds only the broad "in a course" context, not additional syntax or constraints, 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?

States a specific verb and resource ("List every rubric defined in a course") and enumerates the returned fields, making it clearly distinct from get_rubric and rubric-assessment siblings.

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

Usage Guidelines5/5

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

Explicitly routes the agent: use get_rubric for one rubric by ID, get_rubric_assessment for a student's completed assessment, and create_rubric to add a new one. It also notes the required permission, so the caller knows when this tool is inappropriate.

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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