Claude Code, Skill
Canvas Mcp
Canvas LMS MCP server — up to 102 tools and 8 agent skills for students & educators.
Compatibility: Not stated.
Grade C
One Medium finding. Read the findings before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit f4e1773ff145.
NETWORK_HOST_FROM_INPUT
Why this grade
- NETWORK_HOST_FROM_INPUT Medium
A file takes a URL or endpoint as input and has no fixed host list.
deploy/setup.sh, line 80
echo " curl -X POST https://mcp.illinihunt.org/mcp \\"
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Note
requests shell access. The manifest names this permission.
PERMISSION_SHELL_DECLARED
scripts/github_session_brief.py, line 122
url = subprocess.run(
scripts/github_session_brief.py, line 247
out = subprocess.run(
verify/run.py, line 14
result = subprocess.run(command, cwd=ROOT, text=True, capture_output=True)
Show more
internal/issue-triage/2026-10-07.md, line 17
**#456 — "fix: make the test suite pass on Windows and test it there in CI"** — @KKazuhaK, opened 2026-10-06T22:30:23Z. Touches `.githooks/commit-msg` (the closing-keyword guard ho
internal/issue-triage/2026-10-07.md, line 23
Per established practice (2026-10-04 through 2026-10-06 passes), each fork PR's head was pulled into a scratch worktree (`/tmp/claude-0/triage-verify/canvas-mcp-verify`, outside th
internal/issue-triage/2026-10-07.md, line 105
Dangerous-pattern scan re-run over each diff's added lines (`eval(`, `exec(`, `os.system`, `subprocess`, `shell=True`, `pickle`, `__import__`): clean for #457 and #458 — #457's app
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Serious
accepts a host from input, with no fixed list in this file. can reach a host that is not written as a fixed address. can reach mcp.illinihunt.org. The description does not name that host.
NETWORK_HOST_FROM_INPUT NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST
deploy/setup.sh, line 80
echo " curl -X POST https://mcp.illinihunt.org/mcp \\"
scripts/collect-impact-stats.sh, line 48
# pypistats is flaky; the old `curl -sf || echo 0` silently wrote 0 on any blip,
scripts/collect-impact-stats.sh, line 55
RESP=$(curl -sf --max-time 20 "https://pypistats.org/api/packages/$PYPI_PACKAGE/recent" || true)
Show more
scripts/collect-impact-stats.sh, line 71
NPM_MONTH=$(curl -sf "https://api.npmjs.org/downloads/poi
scripts/github_session_brief.py, line 147
with urllib.request.urlopen(urllib.request.Request(url, headers=headers), timeout=timeout) as resp:
scripts/rotate-canvas-token.mjs, line 59
console.log('Then verify with: curl -sS -H "X-Canvas-Token: <tok>" "$CANVAS_API_URL/users/self" (or list_courses in a fresh session).');
src/canvas_mcp/code_api/client.ts, line 133
const response = await fetch(url.toString(), {
src/canvas_mcp/core/guarded_edit.py, line 356
current = await fetch()
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
scripts/github_session_brief.py, line 143
token = os.environ.get("GITHUB_TOKEN") or os.environ.get("GH_TOKEN")
scripts/github_session_brief.py, line 317
if not (os.environ.get("GITHUB_TOKEN") or os.environ.get("GH_TOKEN")):
scripts/rotate-canvas-token.mjs, line 15
const token = process.env.NEW_CANVAS_TOKEN;
Show more
src/canvas_mcp/code_api/client.ts, line 11
* const CANVAS_API_TOKEN = process.env.CANVAS_API_TOKEN;
src/canvas_mcp/code_api/client.ts, line 50
const apiToken = process.env.CANVAS_API_TOKEN;
src/canvas_mcp/core/config.py, line 251
self.canvas_api_token = os.getenv("CANVAS_API_TOKEN", "")
src/canvas_mcp/core/config.py, line 317
self.mcp_access_keys = _parse_keys(os.getenv("MCP_ACCESS_KEYS", ""))
src/canvas_mcp/core/config.py, line 355
self.access_token_secret = os.getenv("ACCESS_TOKEN_SECRET", "")
AGENTS.md, line 30
# In .env:
start_canvas_server.sh, line 9
# Load environment variables from .env file
start_canvas_server.sh, line 10
ENV_FILE="$SCRIPT_DIR/.env"
start_canvas_server.sh, line 12
echo "Loading environment variables from .env file: $ENV_FILE" >&2
start_canvas_server.sh, line 15
echo "Error: .env file not found at $ENV_FILE. Please create one with CANVAS_API_TOKEN and CANVAS_API_URL" >&2
start_canvas_server.sh, line 21
echo "Error: CANVAS_API_TOKEN and CANVAS_API_URL must be set in .env file" >&2
deploy/setup.sh, line 34
# 3. Create minimal .env (no Canvas credentials needed for HTTP mode,
deploy/setup.sh, line 36
if [ ! -f .env ]; then
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read. the file cap was reached before every file was read.
OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED
uv.lock, line 1
version = 1
verify/lean/Client/Lifecycle.lean, line 1
import Std
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit f4e1773ff145. requests shell access. The manifest names this permission. accepts a host from input, with no fixed list in this file. can reach a host that is not written as a fixed address. can reach mcp.illinihunt.org. The description does not name that host. reads a credential or environment file. a file was over the read cap and was not fully read. the file cap was reached before every file was read.
Date and source
Date checked:
github.com
Commit graded: f4e1773ff1458ee619d3d398d37b2e50a8c0d448
This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.