## §SELF — miscsubjects capability (paste without context)
**Principle:** Self-explaining payload — no external context required. This _self block is the capability: what it is, how to run it, how to change it, and where to look next.
**Path:** OIP > SKILL > SKILL_WEB_PERF
**Capability:** `SKILL_WEB_PERF` — Cloudflare skill: web-perf Analyzes web performance using Chrome DevTools MCP. Measures Core Web Vitals (LCP, INP, CLS) and supplementary metrics (FCP, TBT, Speed Index), identifies render-blocking resources, network dependency chains, layout shifts, caching issues, and accessibility gaps. Use when asked to audit, profile, debug, or optimize page load performance, Lighthouse scores, or site speed. Biases towards retrieval from current documentation over pre-trained knowledge.
**RUN NOW (open this URL):** https://miscsubjects.com/api/dispatch?invoke=SKILL_WEB_PERF&body=%3Cyour%20request%20in%20plain%20words%3E&share=<TOKEN>
**Example call:** [SKILL_WEB_PERF]<your request in plain words>[/SKILL_WEB_PERF]
- **type · runner:** agent · model · cf-skill
- **run it:** Open run_now (URL, fires the example), or POST https://miscsubjects.com/api/dispatch {"key":"SKILL_WEB_PERF","body":"<your request in plain words>"}. From the router: null
- **inputs:** {"body":"pipe-delimited args e.g. \"a|b\"; single arg = the value itself; no args = empty string"}
- **outputs:** { ok, result, invocation, yield, _self } — result is this object's output; yield is tokens/cost/material; invocation is the ledgered record.
- **auth · risk:** none · low
### Machine Contract
- Read this article first; do not infer the row shape from memory.
- If acting with a URL-only tool, open run_now after replacing placeholder args.
- If the call returns ran:false or proof.ok:false, read the receipt and repair the failed invocation instead of narrating success.
- If the token denies the call, report the denial exactly; do not switch to a broader action unless the owner supplied a broader token.
### Invocation, Ledger, Repair
- root tree: https://miscsubjects.com/api/dispatch?map=1&format=markdown
- parent system article: https://miscsubjects.com/api/dispatch?map=SKILL&format=markdown
- append-only ledger: https://miscsubjects.com/api/invocations?object_id=SKILL_WEB_PERF
- receipt pattern: https://miscsubjects.com/api/dispatch?receipt=inv_ID&share=<TOKEN>
- replay: POST /api/dispatch {"replay":"inv_ID"}
- repair: POST /api/dispatch {"key":"SKILL_WEB_PERF","body":"corrected args","repairs":"inv_ID"}
### Troubleshooting
- **unknown key** — Use the did_you_mean links or ask URL; never guess another key. · https://miscsubjects.com/api/dispatch?ask=SKILL_WEB_PERF
- **argument/body mismatch** — Read inputs/example_args here, then retry with repairs: inv_ID so lineage closes. · https://miscsubjects.com/api/dispatch?key=SKILL_WEB_PERF
- **expired or corrupted token** — Report token_expired/token_corrupted from the response; owner mints a fresh scoped link. · https://miscsubjects.com/api/dispatch?explain=1&share=<TOKEN>
- **tool returned ok:false / exit nonzero** — Do not call it sent. Read the receipt, correct the body, fire a repair. · https://miscsubjects.com/api/dispatch?receipt=inv_ID&share=<TOKEN>
### Logical proof (verify each step)
1. Every capability is an invokable object with its own _self — this block. → https://miscsubjects.com/api/dispatch?key=SKILL_WEB_PERF
2. You run it by POSTing to /api/dispatch; in a model turn the router tag is [SKILL_WEB_PERF]args[/SKILL_WEB_PERF]. → https://miscsubjects.com/api/dispatch?registry=1
3. Every invocation is ledgered with actor, cost, and material/waste. → https://miscsubjects.com/api/invocations?object_id=SKILL_WEB_PERF
4. You can ask the build for capabilities in plain language. → https://miscsubjects.com/api/dispatch?ask=SKILL_WEB_PERF
5. The whole build is one self-describing map, with the terminal key. → https://miscsubjects.com/api/dispatch?build=1
### Where to look next
- **registry** — Every capability, self-describing · https://miscsubjects.com/api/dispatch?registry=1
- **ask** — Ask the build what to use, in plain language · https://miscsubjects.com/api/dispatch?ask=<question>
- **history** — This capability's invocation history — its edges · https://miscsubjects.com/api/invocations?object_id=SKILL_WEB_PERF
- **build** — The whole build as one map (terminal key) · https://miscsubjects.com/api/dispatch?build=1
*Self-explaining. Not project knowledge — fetch specifics from the links above.*