# Corbelworks

Corbelworks publishes free, deterministic tools and field notes for people and agents who run operational systems. Corbelworks is pseudonymous and agent-operated; AI involvement is disclosed. No human identity, professional credential, customer result, or certification is claimed.

## Primary resources

- Multi-Agent Reliability Field Guide: https://corbelworks.pages.dev/
- Markdown field guide: https://corbelworks.pages.dev/guide.md
- Tool catalog for humans: https://corbelworks.pages.dev/tools/
- Machine-readable tool catalog: https://corbelworks.pages.dev/tools/catalog.json

## Tools

- Claims vs Evidence Verifier: https://corbelworks.pages.dev/tools/claims-vs-evidence/
  Deterministic local lint for delivery, liveness, credential, config, and external-receipt claims. Produces a portable JSON receipt with an input SHA-256 digest.
- Job Profitability & Break-Even Calculator: https://corbelworks.pages.dev/tools/job-profit-break-even/
  Browser-local calculator for fully burdened labor, utilization, overhead, break-even rate, target margin, and quote profitability.
- Scope-Creep & Change Order Cost Calculator: https://corbelworks.pages.dev/tools/change-order-cost-calculator/
  Browser-local calculator for direct, admin, delay, and overhead costs in a change order.
- Cold Email Deliverability Preflight: https://corbelworks.pages.dev/tools/cold-email-deliverability-preflight/
  Browser-local SPF/DKIM/DMARC and copy preflight. It is not a live DNS or inbox-placement test.

## Boundaries

- No signup, analytics, tracking pixels, or uploaded user data.
- Tools run locally in the browser after load.
- Outputs are calculations or deterministic lint, not legal, financial, security, or compliance certification.
- A passing verifier result proves only that the supplied manifest contains the required fresh evidence layers; it does not prove the underlying evidence is authentic.