MCP.Market

canvas skill

by NousResearch·NousResearch/hermes-agent·263k stars·MIT

Fetch Canvas LMS courses and assignments via API token.

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Is the canvas skill safe?

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Install the canvas skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description.

git clone --depth 1 https://github.com/NousResearch/hermes-agent.git /tmp/hermes-agent
mkdir -p ~/.claude/skills
cp -r /tmp/hermes-agent/optional-skills/productivity/canvas ~/.claude/skills/canvas
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

Canvas LMS — Course & Assignment Access

Read-only access to Canvas LMS for listing courses and assignments.

Scripts

  • scripts/canvas_api.py — Python CLI for Canvas API calls

Setup

  1. Log in to your Canvas instance in a browser
  2. Go to Account → Settings (click your profile icon, then Settings)
  3. Scroll to Approved Integrations and click + New Access Token
  4. Name the token (e.g., "Hermes Agent"), set an optional expiry, and click Generate Token
  5. Copy the token and add to ${HERMES_HOME:-~/.hermes}/.env:
CANVAS_API_TOKEN=your_token_here
CANVAS_BASE_URL=https://yourschool.instructure.com

The base URL is whatever appears in your browser when you're logged into Canvas (no trailing slash).

Usage

CANVAS="python $HERMES_HOME/skills/productivity/canvas/scripts/canvas_api.py"

# List all active courses
$CANVAS list_courses --enrollment-state active

# List all courses (any state)
$CANVAS list_courses

# List assignments for a specific course
$CANVAS list_assignments 12345

# List assignments ordered by due date
$CANVAS list_assignments 12345 --order-by due_at

Output Format

listcourses** returns:

[{"id": 12345, "name": "Intro to CS", "course_code": "CS101", "workflow_state": "available", "start_at": "...", "end_at": "..."}]

listassignments** returns:

[{"id": 67890, "name": "Homework 1", "due_at": "2025-02-15T23:59:00Z", "points_possible": 100, "submission_types": ["online_upload"], "html_url": "...", "description": "...", "course_id": 12345}]

Note: Assignment descriptions are truncated to 500 characters. The html_url field links to the full assignment page in Canvas.

API Reference (curl)

# List courses
curl -s -H "Authorization: Bearer $CANVAS_API_TOKEN" \
  "$CANVAS_BASE_URL/api/v1/courses?enrollment_state=active&per_page=10"

# List assignments for a course
curl -s -H "Authorization: Bearer $CANVAS_API_TOKEN" \
  "$CANVAS_BASE_URL/api/v1/courses/COURSE_ID/assignments?per_page=10&order_by=due_at"

Canvas uses Link headers for pagination. The Python script handles pagination automatically.

Rules

  • This skill is read-only — it only fetches data, never modifies courses or assignments
  • On first use, verify auth by running $CANVAS list_courses — if it fails with 401, guide the user through setup
  • Canvas rate-limits to ~700 requests per 10 minutes; check X-Rate-Limit-Remaining header if hitting limits

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