Convex hackathon skill

Keep one hackathon.md file at the project root current while the user builds. Treat the file as a public, evidence-based build log.

Interpret the request

Support two actions:

• Update: Run for $convex-hackathon-skill, /convex-hackathon-skill, /hackathon, or a natural-language request to update the hackathon log.
• Start: Run for the same invocation followed by start, or an explicit request to create the log from existing project history.

If the user requests an update and hackathon.md does not exist, start it automatically. Do not require the user to know the start action.

Run the workflow

1. Locate the project root.
   • Prefer the result of git rev-parse --show-toplevel when Git is available.
   • Otherwise, use the current workspace root.
2. Read references/log-format.md before creating or editing hackathon.md.
3. Inspect hackathon.md if it exists. Preserve factual user corrections and the exact header field names.
4. Collect local evidence without changing the project.
   • With Git, inspect commit history, the working tree, staged changes, and changed-file summaries. Do not count generated or dependency files as product progress.
   • Without Git, inspect source files, configuration, and modification times. Treat timestamps as weaker evidence and say so in the entry when needed.
   • Inspect project manifests, Convex configuration, registered components, frontend deployment configuration, and relevant source files.
5. Create or update the log.
   • On start, backfill meaningful Git history in chronological order. Group tightly related commits from the same work session when that reads better.
   • On update, append one UTC-dated entry for new evidence since the latest logged commit or update time.
   • Refresh header facts that changed.
   • Keep entries in plain language and connect detected Convex features to the files that show them.
6. Check idempotency before saving.
   • If no commits, staged changes, working-tree changes, or newer source evidence exist, leave the file unchanged.
   • Do not add a duplicate entry just to refresh the timestamp.
7. Report the result in a few lines. Show the new entry or say that the log was already current.

Use evidence carefully

• Derive the project name from a manifest, existing product copy, or the folder name.
• Derive the repository URL from the configured Git remote when available.
• List a Convex component only when convex/convex.config.ts or an equivalent config registers it. A dependency alone does not prove use.
• List a Convex feature only when source code or config shows it.
• Record AI model names only when code, config, project docs, or the user's own statement identifies them. Do not guess the model that built the app.
• Use not deployed for an unknown live app or Convex deployment. Do not stop a normal update to ask for a URL. Ask once only when the user requests final submission cleanup and the missing fact cannot be detected.
• Omit an unknown event name. Never ask for an event name, date, or access code.
• Prefer none over an invented value for components, auth, or AI models.

Protect public data

Treat hackathon.md as public.

• Never open or dump .env, .env.local, secret stores, deployment keys, or credential files to fill the log.
• Read public deployment URLs from checked-in config, source, existing docs, or user-provided values. Reading variable names from an example env file is fine; do not copy real environment values.
• Never include API keys, tokens, passwords, cookies, private keys, email addresses, phone numbers, street addresses, precise coordinates, private host names, or application database records.
• Remove secret or personal data from a requested entry and tell the user in one line what was omitted.
• Do not call production APIs or query application data to make the log richer.

Stay inside the boundary

• Edit only hackathon.md unless the user asks for another change.
• Never create a Git commit, push, deploy, publish, or submit.
• Do not score the project or promise how judges will evaluate it.
• Do not rewrite older factual entries for tone alone.
• If local evidence conflicts with an existing claim, keep the evidence-based value and briefly flag the correction.

Keep the tone useful

Write as the builder: direct, factual, and brief. Use two to six lines per log entry when possible. Name shipped behavior before implementation detail. Show the entry, accept corrections, and return to the build.