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 agentmods add skills/webflow/webflow-skills/webflow-compress-cms-imagenpx skills add webflow/webflow-skills --skill webflow-compress-cms-imagegit clone --depth 1 https://github.com/webflow/webflow-skillsWrote 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/webflow/webflow-skills/webflow-compress-cms-image)<a href="https://agentmods.dev/skills/webflow/webflow-skills/webflow-compress-cms-image"><img src="https://agentmods.dev/badge/skills/webflow/webflow-skills/webflow-compress-cms-image.svg" alt="Measured on agentmods" 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 | $0.00067 | $0.02364 |
| Opus 5 | $0.00034 | $0.01182 |
| Sonnet 5 | $0.00013 | $0.00473 |
| Haiku 4.5 | $0.00007 | $0.00236 |
Grade A, and why
webflow-mcp:compress-cms-image scanned grade A with 1 finding 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 5d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -sL "{url}" -o "/tmp/cms_img_{fieldSlug}_{index}.orig" How it starts
The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Webflow CMS Image Compression
Compress and reformat image fields on a Webflow CMS item to .webp or .avif.
This skill does not support images embedded inside Rich Text fields at this time. Tell the user that limitation before starting and only process CMS fields whose schema type is Image or MultiImage.
Important Note
ALWAYS use Webflow MCP tools for Webflow operations:
- Use Webflow MCP's
data_sites_toolwith actionlist_sitesto discover the site ID when needed - Use Webflow MCP's
data_cms_toolwith actionget_collection_detailsto fetch collection schemas - Use Webflow MCP's
data_cms_toolwith actionlist_collection_itemsto fetch the target CMS item - Use Webflow MCP's
data_assets_toolwith actioncreate_assetto create presigned asset uploads - Use Webflow MCP's
data_cms_toolwith actionupdate_collection_itemsto update CMS image fields - Use Webflow MCP's
data_cms_toolwith actionpublish_collection_itemsto publish the updated item - All Webflow MCP calls must include the required
contextparameter (15-25 words, third-person perspective) - Mutating operations require explicit user confirmation. Ask the user to type
confirmbefore uploading assets, updating CMS fields, or publishing. - Rich Text embedded images are not supported. Do not parse or rewrite Rich Text HTML for image compression.
Instructions
Phase 1: Gather Parameters
Collect all required inputs in one shot when possible:
- Collection ID: Ask "What is the Collection ID?"
- Item ID: Ask "What is the Item ID?"
- Image fields: Ask "Which image fields should be compressed?"
- "All image fields" - compress every Image or MultiImage field found on the item
- "Specify field names" - user will name specific field slugs
- Target format: Ask "Target format?"
- "webp (Recommended)" - best browser support, good compression
- "avif" - better compression, slightly less support
- Quality (1-100): Ask "Quality (1-100)?"
- "85 - Recommended (webp)" - visually lossless for most photos
- "75 - Recommended (avif)" - avif is efficient at lower quality
- "Custom" - user types their own value
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.
- 5d ago First seen · 253 lines · 67 tokens per session scan A ac84493dd9e2
webflow-mcp:compress-cms-image is a skill published in the GitHub repository webflow/webflow-skills (117 stars, last pushed 3d ago), licensed MIT. It adds 67 tokens to every session and 2,364 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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