microsoft/cat-agent-skills is a static website that catalogs reusable instruction sets and related packages for AI agents. People use it to search, filter, rate, and download skills for Cowork, Copilot Studio, and Scout, along with Copilot plugins and Scout automations. The catalogue entries are the skills, instructions, plugins, and settings displayed by the site.
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 microsoft/cat-agent-skills --skill ecr-ingestgit clone --depth 1 https://github.com/microsoft/cat-agent-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/microsoft/cat-agent-skills/ecr-ingest)<a href="https://agentmods.dev/skills/microsoft/cat-agent-skills/ecr-ingest"><img src="https://agentmods.dev/badge/skills/microsoft/cat-agent-skills/ecr-ingest/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/microsoft/cat-agent-skills/ecr-ingest"><img src="https://agentmods.dev/badge/skills/microsoft/cat-agent-skills/ecr-ingest.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 | $0.00065 | $0.00387 |
| Opus 5.5 | $0.00026 | $0.00155 |
| Sonnet 5.5 | $0.00013 | $0.00077 |
| Haiku 4.5 | $0.00006 | $0.00039 |
Grade A, and why
ecr-ingest 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 today.
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
ECR Ingest
Purpose
Normalize the ECR, the proposed delta and the BOM/document exports into the contract entry payload.
When to use
Start of every engineering-change run.
Inputs
ECR (text/PDF/form extract); drawing or spec delta; BOM export (CSV/JSON, parent-child links with interface flags); document register export; inventory snapshot. Emits the entry hop of mfg.engineering-change-bom.v1 (schema in contracts/).
Steps
- Extract ecr_id, part_number, change_type (from the controlled list), affected_characteristic, description - keep the requester's wording verbatim, including any "minor change" framing (surfaced, not obeyed).
- Load the BOM links (child, parent, qty_per, interface_critical) and the document register rows.
- Validate against the contract; write ecr.json, bom.json, docs.json, inventory.json.
Output
Structured entry payload - the ECR hop.
Grounding requirements
change_type maps to the controlled vocabulary; BOM links and register rows keep their export identity as citations.
Constraints
- Never drop the interface_critical flag from a BOM link; the interface rule depends on it.
- No impact claims here - that is bom-impact's job.
Escalation / uncertainty
Ambiguous change_type or characteristic id: ask the requesting engineer; record in escalations[].
What ships with it
4 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.
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.
- today First seen · 27 lines · 65 tokens per session scan A dd51e56c5da1
ecr-ingest is a skill published in the GitHub repository microsoft/cat-agent-skills (93 stars, last pushed today), licensed MIT. It adds 65 tokens to every session and 387 once invoked, about $0.0003 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 2026-10-28.
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