HTML Table to CSV: Merged Cells and Entities Done Right — Converts one HTML table into RFC 4180 CSV and answers with the CSV only, no code fence. The header is the first row, every cell keeps the text a browser shows after entities are decoded (&, €, —, a no-break space), links, bold and other inline markup vanish and their text stays, a line-break tag becomes a space, and numbers such as 1,250 stay text in quotes. A cell that spans rows or columns (rowspan, colspan) repeats its …

JSON Schema From Examples: No Over-Constraining — Writes a JSON Schema (draft 2020-12) from example JSON documents plus rules given in words, so that it accepts every example and every document the rules allow, and refuses every document the rules forbid. Nothing is made required, closed, numeric-only, formatted or limited because the examples happen to look that way - a key missing from one example stays optional, two observed values do not become an enum, whole-number examples do not make an …

llms.txt Writer — Writes an llms.txt file in the shape the llms.txt proposal defines, from a site description and a list of pages, answered as the Markdown file only. One H1 with the site name, a blockquote summary, optional plain notes, then H2 sections that hold lists of links in the form "- [name](address): notes". Every address is absolute (a relative one is joined to the stated origin) and copied exactly, never invented; pages marked noindex, private or behind a login are left out; a page …

Playwright Test from Manual Steps — Turns manual test steps plus the page facts you have (route, labels, button names, messages) into one Playwright Test file in TypeScript that can really fail. Elements are found by role and accessible name, by label or by text, never by a CSS class, an id or XPath, and a name that is the start of another gets the exact option; every step that observes something gets one awaited, auto-retrying assertion; a step such as wait a couple of seconds becomes an asser…

Quiz From Text: Answers Quoted From the Passage — Writes a fixed number of quiz questions from a passage you give it, as JSON, where every answer is a span copied word for word from the passage, with the same digits or number words, spacing, dashes, apostrophes and capitals, paired with the full sentence it comes from, and never a paraphrase, a pronoun, a computed value or a fact from outside the text. Questions are in the passage's own language, each asks for a different fact, a negation or a …

ReDoS Regex Rewrite: Same Answers, Linear Time — Rewrites a JavaScript regular expression that can hang on a crafted input (catastrophic backtracking, ReDoS) into one that gives exactly the same yes or no for every text and runs in linear time, answered as JSON with the pattern and flags. Knows the shapes that explode - a quantified group whose inside is quantified too, alternatives under a star that can match the same text, an optional separator between repeats, a counted group of runs, an una…

RSS Feed Builder — Writes an RSS 2.0 file, or an Atom one when asked, from a list of posts, answered as the XML only with no fence and no sentence around it. Dates are RFC 822 with a correct weekday, never ISO; a post with no date gets no date, a post with no image gets no image and a post with no summary gets no description, so nothing is invented. Ampersands are escaped, HTML summaries go in CDATA, every link is absolute, the guid never changes, and the Atom namespace with a self link is decl…

Sitemap Builder — Builds a correct XML sitemap, or a sitemap index file, from a list of pages, answered as the XML document only. Lists only canonical, indexable pages that return 200 on one host, and leaves out redirecting, noindex, non-canonical, removed and other-host addresses. Writes every address absolute and entity-escaped (an ampersand in a query string becomes the escape code), and writes lastmod only when the input gives a real date for that page - never the day the file was generated…

Subtitle Timing Repair: Fix SRT and VTT, Words Stay — Repairs the structure of an SRT or WebVTT subtitle file so a video player reads it, without changing a single word and without changing the value of a single time, and answers with the file only, no code fence. Fixes the separator before the milliseconds (a comma in SRT, a dot in VTT), broken arrows, short hours and short millisecond fields, missing or doubled blank lines between cues, cue numbers that skip, repeat or are out of order after …

Unified Diff Repair: Fix the Counts, Keep the Change — Repairs a unified diff (the patch format of git diff and diff -u) so that git apply and patch accept it against the file it was written for, and answers with the diff only, no code fence. Recounts the numbers in each hunk header from the hunk's own lines, puts back context lines and removed lines exactly as the file has them (tabs, trailing spaces, blank lines, carriage returns), adds the backslash line that marks a missing final line break…

Watchdog Alert Review: Silent and Noisy Alarms — Reviews pasted code or a design for a liveness watchdog, a staleness alarm or a daily heartbeat mail (sources that must keep answering, a pipeline that must keep publishing) and lists every way it stays silent on a dead source or floods on a healthy one. It checks whether silence is measured in the time the source was last asked or by the wall clock, whether a stateless alarm window repeats or never fires, whether the threshold is longer than the…

OpenNext R2 Cache Cleanup for Next.js on Cloudflare — Decides which old build folders of an OpenNext incremental cache on Cloudflare (R2, or Workers KV) can be deleted, from a pasted setup (wrangler config, open-next config, next.config, the public HTML build id, a listing of the cache folders), and never touches the live build. It reads the cache root and the real folder name (a custom prefix, a deploymentId, a constant deploymentId, a no-build-id folder), finds the live build from the public …

Claude Session Saver: When to Clear or Compact — Reviews a snapshot of a Claude Code session (the context size, measured or guessed; the task and where it stands; git status; what still runs in the background; the plan or notes file; what the person asked) and decides whether the person should type /clear, type /compact with a focus text, finish one step first, or keep going. Before a fresh session it lists what would be lost or left behind: results that exist only in the chat, a plan file with…

Cloudflare Google Index Doctor — Reads what the owner of a site on Cloudflare Workers (usually Next.js through OpenNext) pasted - Search Console numbers, an audit of status codes, open-next.config.ts, wrangler.jsonc, data-fetch code, robots, sitemap and metadata code, wrangler tail lines, the owner's plan - and finds what stops Google from crawling, indexing or showing the pages, in a fixed diagnosis order. Group 1, the crawler gets errors - the site's own API rate-limiting its own renders, a 5…

API Breaking Change Check for OpenAPI — Compares two versions of one API description (OpenAPI 3.0 or 3.1 in YAML or JSON, or two JSON Schemas of one request or response) and lists ONLY the changes that break clients written against the old version, one line each with a fixed code, the place, old and new, and who breaks - or exactly No breaking changes. The skill judges by direction - a request may widen safely and breaks when it narrows, a response may narrow safely and breaks when it widens - …

CORS Config Review — Reviews CORS code or server configuration (an Express or Flask handler, an nginx block, a framework setting) for the five mistakes that let a hostile web page read private responses, and lists only those, one line each with a fixed code, the place, why it is dangerous and the fix - or exactly No findings. It catches a request Origin copied into the allow header while cookies are allowed, a wildcard origin together with credentials, the null origin allowed, an origin check b…

Dockerfile Review — Reviews ONE Dockerfile for the five build mistakes that cost security or build time, and lists only those, one line each with a fixed code, the instruction, why it hurts and the fix - or exactly No findings. It catches a final image that runs as root, a base image with no tag or the latest tag, a secret passed through an argument, an environment value or a file copy so that it stays in the image history, source copied in before the dependencies are installed so the cache is …

GA4 Tracking Plan Limits — Checks ONE Google Analytics 4 tracking plan (events, their parameters, and the custom dimensions to register with their scope) against the published collection limits and naming rules, and lists only the breaches, one line each with a fixed code, the item, the rule it breaks and the fix - or exactly No findings. It catches an event or parameter name longer than allowed, more parameters on one event than GA4 collects, a reserved event name or a reserved parameter name …

A/B Test Readout Check — Checks the written readout of ONE A/B test (a paragraph, an email, a table or a slide transcript) for the five statistical mistakes that turn a no-effect test into a "win", and lists only those, one line each with a fixed code, the place, the evidence with the arithmetic and the fix - or exactly No findings. It catches stopping the moment a result looks significant, many metrics or variants judged without correction, a split of users that differs from the planned split …

Agent Loop Review: Repeats, Caps, Self-Grading — Reviews the description, configuration or code of an agent loop, anything that repeats on its own: a scheduled job that calls a model, an agent that retries until it is done, a batch of actions, a self-improving prompt loop. It finds where the loop runs away or repeats a side effect (no ceiling on iterations, the same scheduled tick delivered twice, a progress marker written after the effect, nothing kept between iterations, a batch that goes on …