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 CodingFeng101/CanvasAnvil --skill flow-skillgit clone --depth 1 https://github.com/CodingFeng101/CanvasAnvilWrote 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/codingfeng101/canvasanvil/flow-skill)<a href="https://agentmods.dev/skills/codingfeng101/canvasanvil/flow-skill"><img src="https://agentmods.dev/badge/skills/codingfeng101/canvasanvil/flow-skill/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/codingfeng101/canvasanvil/flow-skill"><img src="https://agentmods.dev/badge/skills/codingfeng101/canvasanvil/flow-skill.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 | $0.00044 | $0.00564 |
| Opus 5.5 | $0.00018 | $0.00226 |
| Sonnet 5.5 | $0.00009 | $0.00113 |
| Haiku 4.5 | $0.00004 | $0.00056 |
Grade A, and why
flow-skill 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 1mo 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
44 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- agents/openai.yaml 322 B
- package.json 278 B
- prompts/append.md 520 B
- prompts/display.md 916 B
- prompts/edit.md 983 B
- prompts/router.md 590 B
- references/edit-rules.md 897 B
- references/shape-libraries/alibaba_cloud.md 7.9 KB
- references/shape-libraries/android.md 1.3 KB
- references/shape-libraries/arrows2.md 613 B
- references/shape-libraries/atlassian.md 663 B
- references/shape-libraries/aws4.md 22 KB
- references/shape-libraries/azure2.md 11 KB
- references/shape-libraries/basic.md 744 B
- references/shape-libraries/bpmn.md 1.2 KB
- references/shape-libraries/cabinets.md 1.5 KB
- references/shape-libraries/cisco19.md 4.7 KB
- references/shape-libraries/citrix.md 2.0 KB
- references/shape-libraries/electrical.md 825 B
- references/shape-libraries/floorplan.md 914 B
- references/shape-libraries/flowchart.md 869 B
- references/shape-libraries/fluidpower.md 3.0 KB
- references/shape-libraries/gcp2.md 5.8 KB
- references/shape-libraries/infographic.md 525 B
- references/shape-libraries/kubernetes.md 761 B
- references/shape-libraries/lean_mapping.md 585 B
- references/shape-libraries/material_design.md 5.3 KB
- references/shape-libraries/mscae.md 601 B
- references/shape-libraries/network.md 1.2 KB
- references/shape-libraries/openstack.md 786 B
- references/shape-libraries/pid.md 579 B
- references/shape-libraries/rack.md 1.1 KB
- references/shape-libraries/README.md 5.1 KB
- references/shape-libraries/salesforce.md 1.8 KB
- references/shape-libraries/sap.md 4.7 KB
- references/shape-libraries/sitemap.md 875 B
- references/shape-libraries/vvd.md 1.9 KB
- references/shape-libraries/webicons.md 2.5 KB
- references/shape-library-index.md 1.0 KB
- references/xml-rules.md 1.2 KB
- scripts/build-flow-bundle.mjs 3.1 KB runs code
- scripts/build-preview-html.mjs 5.5 KB runs code
- scripts/export-drawio-image.mjs 5.2 KB runs code
- scripts/validate-drawio-xml.mjs 2.9 KB runs code
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.
- 1mo ago First seen · 91 lines · 44 tokens per session scan A bdc39c7eddcd
flow-skill is a skill published in the GitHub repository CodingFeng101/CanvasAnvil (97 stars, last pushed 1mo ago), licensed AGPL-3.0. It adds 44 tokens to every session and 564 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.
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