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-discussion-helpergit 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-discussion-helper)<a href="https://agentmods.dev/skills/harryx2011-boop/canvaslms-api/canvas-discussion-helper"><img src="https://agentmods.dev/badge/skills/harryx2011-boop/canvaslms-api/canvas-discussion-helper/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-discussion-helper"><img src="https://agentmods.dev/badge/skills/harryx2011-boop/canvaslms-api/canvas-discussion-helper.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 | $0.00053 | $0.00451 |
| Opus 5 | $0.00026 | $0.00226 |
| Sonnet 5 | $0.00011 | $0.00090 |
| Haiku 4.5 | $0.00005 | $0.00045 |
Grade A, and why
canvas-discussion-helper 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 10d 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 Discussion Helper
Read a discussion thread in full, draft a reply grounded in what was actually said, and post it only after the student approves the draft.
Prerequisites
- CanvasLMS - API connected and
canvaslms-api --testsucceeds. - The course and discussion topic the student wants to respond to (course name/code is enough;
list_discussion_topicscan find the topic if the exact one is unclear).
Steps
- If the topic is not already known, call
list_discussion_topicsfor the course to find it. - Call
get_discussion_threadfor the topic (or the specific entry, if replying to one person) to read the full thread, including existing replies, so the draft doesn't repeat points already made. - Draft a reply in the student's voice: address specific points from the thread by name, add one substantive idea, and keep it to a normal discussion-post length (a paragraph or two, not an essay).
- Show the draft to the student and ask for changes or approval. Do not post anything yet.
- Once approved, post it:
- New top-level entry in the topic:
post_discussion_entrywithconfirm=true. - Reply to a specific existing entry:
reply_to_discussion_entrywithconfirm=true.
- New top-level entry in the topic:
- Confirm the post succeeded and show the final posted text.
Output format
During drafting, show the thread summary and the draft reply as plain Markdown, clearly labeled:
## Thread summary
- [Author]: point made
- [Author]: point made
## Draft reply
<the draft text>
After posting, a one-line confirmation: Posted to [Topic] in [Course]. Never call post_discussion_entry or reply_to_discussion_entry with confirm=true before the student has explicitly approved the draft text.
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.
- 10d ago First seen · 40 lines · 53 tokens per session scan A d31cf9c5ea64
canvas-discussion-helper is a skill published in the GitHub repository harryx2011-boop/CanvasLMS-API (0 stars, last pushed 8d ago), licensed MIT. It adds 53 tokens to every session and 451 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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