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webhook-transforms

Agent Building
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Generic framework for converting external events (SMS, meetings, social mentions) into brain-ingestible signals. Define a transform function, register a webhook URL, and incoming events get processed through the brain pipeline.

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Source SKILL.md: https://github.com/inbrainfun/inbrain/blob/HEAD/skills/webhook-transforms/SKILL.md

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Webhook Transforms

Contract

This skill guarantees:

  • External events are transformed into brain pages with proper citations
  • Raw payloads are preserved (dead-letter queue if transform fails)
  • Entity extraction runs on every transformed event
  • Input sanitization: no raw HTML/script passes to brain pages
  • Error handling: transform failure logs raw payload, retries once

Phases

  1. Define transform. Map event schema to brain page format:

    • Input: raw webhook payload (JSON)
    • Output: brain page content (markdown) + metadata (slug, type, citations)
    • Must sanitize: strip HTML tags, escape script content

  2. Register webhook URL. Provide the external service with the webhook endpoint.

  3. On event received:

    • Parse payload
    • Run transform function
    • Write brain page via inbrain put
    • Extract entities, run enrichment
    • Add timeline entries to mentioned entities
    • Sync: inbrain sync

  4. Error handling:

    • If transform throws: log raw payload to _dead-letter/{timestamp}.md
    • Surface error type to agent
    • Retry once
    • Don't lose events

Example Transforms

SMS Received

Input: {from: "+1555...", body: "Meeting moved to 3pm", timestamp: "..."}
Output: Timeline entry on sender's brain page + task update if action item detected

Meeting Completed

Input: {title: "Weekly sync", attendees: [...], transcript: "...", summary: "..."}
Output: Delegate to meeting-ingestion skill

Social Mention

Input: {platform: "twitter", author: "@handle", text: "...", url: "..."}
Output: Brain page in media/ + entity extraction + backlinks

Output Format

Event transformed and written to brain. Report: "Webhook: {event_type} from {source} ā†’ {brain_page_path}"

Anti-Patterns

  • Passing raw HTML/script to brain pages (XSS risk)
  • Silently dropping events when transform fails (use dead-letter queue)
  • Processing webhooks without entity extraction
  • Not sanitizing external input before brain writes