Changelog

What changed, and when.

Endpoints are versioned under /v1/; breaking changes ship as new versions with a 12 month deprecation window. This page tracks everything customer-visible.

2026-09-17

v1.0.0: public launch

  • CoachLayer is publicly available: self-serve signup mints a sandbox key with no card and no sales call (POST /v1/signup).
  • API reference pinned at v1.0.0; capacity_error documented for the free-tier pause state.
  • Legal, contact, status and changelog pages published.
2026-09-14

Subscriptions

  • Paid tiers (Build, Growth, Scale, Enterprise) can be started and cancelled from the dashboard, billed through Stripe.
2026-09-13

Benchmark and comparison guides

  • Published the production benchmark: outcome-level quality scores for the coaching endpoints, measured on real traffic.
  • Added build-vs-buy, camera SDK and data API comparison pages, plus the cost guide.
2026-09-12

Developer portal

  • Customer dashboard: signup and login, API key create and revoke, usage and credits view.
  • First-call onboarding: a fresh account gets a pre-filled test request to verify its key in one click.
  • Durable storage moved to Postgres with per-tenant row-level security.
2026-09-06

Docs, MCP server, calculator

  • API reference, llms.txt and llms-full.txt generated from the OpenAPI contract.
  • MCP server: point an agent at the API with tool schemas derived from the same contract.
  • Cost calculator with URL-shareable state.
2026-08-30

Gateway

  • Eight metered v1 endpoints behind hashed-key auth: chat, brief, coach-insight, workout-analysis, adaptive-session, weekly-report, form-check, import.
  • Credit metering with per-call telemetry, tier ladder, rate limiting, OpenAPI 3.1 contract.