Conciseness

The body is lean: quick-reference tables, operational rules, red flags, and verification checks with no explanation of concepts Claude already knows. It falls short of the 5 anchor only because the File/Metadata Operations tables partially duplicate endpoint detail that also lives in references/files.md and references/metadata.md, so a few tokens could be trimmed.

Actionability

Everything is executable: complete curl for token acquisition, JavaScript examples for upload, search (including path escaping), and async ZIP creation with polling; endpoint tables give exact methods, paths, and query params. Covers the common cases copy-paste ready.

Workflow Clarity

The Debugging Workflow is a clear 6-step sequence with explicit checkpoints ('Compare the request shape against the official docs before patching code', 'Separate auth/token failures from Sirv payload/query failures') and a feedback loop ('Add a focused regression test'). Destructive/batch operations are backed by validation: check '/v2/account/limits' before bulk jobs and the Verification checklist (verify with stat/meta/readdir/search, re-run integration tests).

Progressive Disclosure

The 'When to Read Reference Files' section cleanly signals four topic-bundled references (files.md, metadata.md, jobs.md, account.md), all of which exist as real files one level deep, while the body keeps only an overview and quick reference.

Specificity

The description lists multiple concrete actions ('uploading/downloading files to Sirv, managing image metadata, searching files, creating 360 spins, converting videos') and enumerates coverage areas ('authentication, file operations, metadata, search queries, async jobs, and account management'), matching the comprehensive multi-action anchor. It is written in third person with no vague filler.

Completeness

It clearly answers both what ('Sirv REST API integration for image and file management') and when ('Use when working with Sirv CDN, uploading/downloading files to Sirv, ... or any Sirv API operations') with concrete trigger phrases, exactly matching the top anchor.

Trigger Term Quality

Natural trigger phrases like 'Sirv CDN', 'uploading/downloading files', 'searching files', and 'converting videos' are present and match what a user would say. It lacks synonyms or file-extension variants of the kind in the 5 anchor, though for a named commercial API the natural vocabulary is largely 'Sirv' itself, keeping it above the 3 anchor.

Distinctiveness Conflict Risk

'Sirv' is a distinct named product niche with dedicated trigger terms (Sirv CDN, 360 spins, Sirv API operations), so the risk of firing for the wrong skill is minimal.