Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/AlpacaLabsLLC/skills-for-architectsnpx agentmods add skills/alpacalabsllc/skills-for-architects/ffe-spec-bookWrote 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/alpacalabsllc/skills-for-architects/ffe-spec-book)<a href="https://agentmods.dev/skills/alpacalabsllc/skills-for-architects/ffe-spec-book"><img src="https://agentmods.dev/badge/skills/alpacalabsllc/skills-for-architects/ffe-spec-book/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/alpacalabsllc/skills-for-architects/ffe-spec-book"><img src="https://agentmods.dev/badge/skills/alpacalabsllc/skills-for-architects/ffe-spec-book.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 | $0.00048 | $0.02707 |
| Opus 5.5 | $0.00019 | $0.01083 |
| Sonnet 5.5 | $0.00010 | $0.00541 |
| Haiku 4.5 | $0.00005 | $0.00271 |
Grade A, and why
ffe-spec-book 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.
How it starts
The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/as:ffe-spec-book — Assemble an FF&E Specification Book
Before acting, read the host contract and this component's declaration (skill:ffe-spec-book). Load only its referenced mode profiles from the shared catalog. Compose modes required by the actual task; declarations are requirements, not proof of access or permission.
Host adapter: read delivery-specific guidance for invocation, package paths, questions, file access and optional delegation.
Compose /as:product-cut-sheet; do not duplicate extraction, research or sheet layout logic. Input: explicit ordered scope, pinned schedule/item revisions or a one-off snapshot, accepted template, grouping and audience. Output: individual/combined artifacts as requested and a derived package preparation manifest and revision receipt owned by this skill. /as:product-data-import owns the accepted job input manifest; this skill only consumes it. Item/schedule records remain owned by /as:master-schedule; decisions and project facts remain owned by /as:project.
Document role and compatibility
Assemble an FF&E specification book from source-faithful product entries. Project Manual sections and their design, submittal and execution requirements belong to /as:spec-writer. The skill name is ffe-spec-book; the persisted document kind spec-book, template IDs/paths, helper operations and existing receipts retain their current contracts. Do not migrate saved records merely because the skill name changed.
Native preparation and publication
Read the complete native output owner and design resolver, including exact schemas, identity/versioned filenames, hashes and retry boundaries. Use the actual host's native tooling; operation names identify semantic work and do not dispatch an Arch Studio executable.
What ships with it
2 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.
- 1mo ago First seen · 113 lines · 48 tokens per session scan A bdbff5752eda
ffe-spec-book is a skill published in the GitHub repository AlpacaLabsLLC/skills-for-architects (395 stars, last pushed 7d ago), licensed MIT. It adds 48 tokens to every session and 2,707 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 2026-09-25.
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