Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add harryx2011-boop/CanvasLMS-API --skill canvas-bulk-gradinggit clone --depth 1 https://github.com/harryx2011-boop/CanvasLMS-APIWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/harryx2011-boop/canvaslms-api/canvas-bulk-grading)<a href="https://agentmods.dev/skills/harryx2011-boop/canvaslms-api/canvas-bulk-grading"><img src="https://agentmods.dev/badge/skills/harryx2011-boop/canvaslms-api/canvas-bulk-grading/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/harryx2011-boop/canvaslms-api/canvas-bulk-grading"><img src="https://agentmods.dev/badge/skills/harryx2011-boop/canvaslms-api/canvas-bulk-grading.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00056 | $0.00492 |
| Opus 5 | $0.00028 | $0.00246 |
| Sonnet 5 | $0.00011 | $0.00098 |
| Haiku 4.5 | $0.00006 | $0.00049 |
Grade A, and why
canvas-bulk-grading scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Canvas Bulk Grading
Grade multiple submissions for one assignment in a single pass, showing every proposed grade before anything is written to Canvas.
Prerequisites
- CanvasLMS - API connected and
canvaslms-api --testsucceeds. - An educator-level Canvas token (student tokens cannot grade).
- The course and assignment to grade, and either a grading rule (e.g. "10 points for a submission, 5 if late") or a rubric already attached to the assignment.
Steps
- Call
list_submissionsfor the assignment to see who has submitted, what they submitted, and current grading status. - If grading against a rubric, call
get_rubric(vialist_rubricsfirst if the rubric id isn't known) to see the criteria and point values. - Build the proposed grade for each submission:
- No rubric: call
bulk_grade_submissionswithoutconfirmto get a preview of the grades that would be applied. - Rubric-based: call
grade_with_rubricwithoutconfirmper submission (or in the batch form if supported) to preview rubric scores and comments.
- No rubric: call
- Present the full preview to the educator as a table before touching anything else. Wait for explicit approval, including any corrections to individual grades.
- Re-run the same call(s) with
confirm=trueonly for the submissions approved as-is (or with the educator's corrections applied). - Report which submissions were graded and any that were skipped or failed.
Output format
Preview table, before any confirm call:
| Student | Submission | Proposed grade | Notes |
|---|---|---|---|
| Name | Link/summary | 18/20 | Late, -2 |
After confirmation, a short summary: Graded N of M submissions in [Assignment]. List any skipped or failed submissions with the reason. Never call bulk_grade_submissions or grade_with_rubric with confirm=true on a submission that wasn't shown in a prior preview.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 38 lines · 56 tokens per session scan A 91a44b7abbb7
canvas-bulk-grading is a skill published in the GitHub repository harryx2011-boop/CanvasLMS-API (0 stars, last pushed 7d ago), licensed MIT. It adds 56 tokens to every session and 492 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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