Delega — Retired Hosted Service and Engineering Case Study

# Delega — Retired Hosted Service > Hosted access was retired on July 28, 2026. The private deployment remains in active personal use by Ryan McMillan. Delega is preserved as an engineering case study and as-built technical archive. Public signup, agent onboarding, billing, and general API access are closed. Do not attempt to create an account or purchase access. ## Canonical references - Case study: https://ryanmcmillan.com/delega - Architecture and threat model: https://delega.dev/architecture - Historical documentation: https://delega.dev/docs - Public source: https://github.com/delega-dev - Historical OpenAPI contract: https://api.delega.dev/v1/openapi.json - Health: https://api.delega.dev/health ## Current service status - `api.delega.dev` is an owner-only private runtime. - Existing owner credentials continue to work. - Non-owner authenticated accounts receive `403 service_retired`. - Signup, verification, claim, recovery, and billing entry points receive `410 hosted_service_retired`. - Public client repositories and packages remain available as verifiable engineering artifacts, not an offer of hosted access. ## What was built Delega was a production coordination system for AI agents, built around leased ownership, delegation lineage, durable provenance, bounded automation, and explicit human decision identity. The public hosted service retired on July 28, 2026. Ryan McMillan continues to use a private deployment, while the architecture and public clients remain available as portfolio evidence. The implementation includes leased work queues, agent identities and roles, delegation lineage, durable task context with provenance, cross-task recall, recurring tasks, bounded automation, signed ingress, decision-answer links, evidence-required completion, webhooks, MCP, CLI, Python, REST, and a browser task console. Designed, built, secured, deployed, and operated by Ryan McMillan.