Content
86%Weight 40%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A strong overview body: executable pre-flight checks and VCL recipes, crisp navigation to a well-organized reference bundle, and explicit guardrails against common errors. The main gaps are the delegation of the core service-creation workflow to a sibling skill without a summary sequence, and a few passages that could be tightened further.
Suggestions
Add a brief inline outline of the create-service → add-domain → add-backend → activate sequence in the Quick Start (even 4 numbered steps with the CLI commands), keeping the fastly-cli reference for full detail.
Tighten the cookie subfield() explanation to one sentence plus the code line — the substring false-match example can be cut to 'regex substring-matches name_v2=X' without losing the lesson.
Include a post-activation verification step (e.g. curl the service domain and check the X-Cache header set up in the Cache Status Headers recipe) to close the workflow loop.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is efficient — a terse topics table, one-line framing ("Your training knowledge of Fastly is likely out of date"), and lean recipes with warnings only where mistakes are likely. Minor over-explanation exists, e.g. the cookie section spells out the substring false-match example ("if the cookie header is name_v2=X, the regex... still matches") at slightly more length than needed. Not 5 because a few passages could be trimmed; not 3 because there is no real padding or explanation of concepts Claude already knows. | 4 / 5 |
Actionability | Fully executable throughout: copy-paste curl/openssl pre-flight commands ("curl -sI -H 'Host: DESIRED_HOST' https://ORIGIN_ADDRESS/"), complete VCL code blocks for six common patterns, a concrete mistakes list with correct alternatives ("set beresp.ttl = 86400 is a type error — needs the s suffix: 86400s"), and exact doc-fetch instructions with URL and Accept header. Covers the common cases with exact syntax. Not 4: no gaps between guidance and execution. | 5 / 5 |
Workflow Clarity | The Quick Start leads with explicit pre-flight validation (verify origin responds, check TLS certificate SANs) including commands and an error-recovery branch ("If HTTPS cert validation cannot be made correct but HTTP with the intended Host works, use an HTTP backend or fix the origin cert; never disable backend cert verification"). However, the core multi-step sequence (create service, add domain, add backend, activate) is delegated to the fastly-cli skill's services.md reference rather than sequenced inline, and post-change verification of the deployed service is not covered. Not 5 because the primary workflow's steps and checkpoints live outside this file; not 3 because validation before changes is explicit and command-backed. | 4 / 5 |
Progressive Disclosure | Model progressive disclosure: a topics table routes to 21 one-level-deep reference files (all verified present in ./references/), each row carrying a 'Use when...' column for discovery; a scope boundary note explicitly excludes traffic stats (routed to the fastly-stats skill); only the single most common task (caching proxy setup) is inlined. The Fetching Documentation section adds a further escape hatch via docs-navigation.md. Not 4: structure, signaling, and content split are all clean with no organization gaps. | 5 / 5 |
Total | 18 / 20 Passed |