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ACAAS is in public beta. Behavior may shift between minor versions; breaking changes are called out explicitly. Subscribe to the RSS feed to get notified when anything ships.
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New endpointImprovement
v0.1.3

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Rate limit introspection

Added GET /v1/rate-limits so callers can inspect their current quota without spending a request. The response includes requests_remaining, resets_in_seconds, and a categorical status (ok, approaching_limit, at_limit).Authenticated responses now also include the X-RateLimit-Remaining and X-RateLimit-Reset headers, so you do not need a separate call to know where you stand.See the new Rate limiting guide for the full ladder and proactive pacing patterns.
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ExperimentalImprovement
v0.1.2

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Tunable emphasis ratio

/v1/emphasize now accepts an emphasis_ratio parameter between just above 0 and 1.0, defaulting to 0.3. Lower values produce sparser highlights; higher values are more generous.The emphasis model itself was retrained on a corpus of release notes, product announcements, and headlines. Output is meaningfully more useful for short text and slightly more verbose for very long input.Behavior remains non-deterministic. See Experimental emphasis for guidance on when and when not to depend on this endpoint.
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Bug fix
v0.1.1

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Whisper response shape

Fixed a bug where /v1/whisper returned characters_amplified: 0 for any input that was already lowercase. The field now correctly reports the count of characters whose case changed, regardless of direction.Fixed a regression where /v1/scream with intensity: 1 occasionally appended two exclamation marks instead of one. The villain has been dispatched.
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New endpointBreaking change
v0.1.0

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Public beta launch

ACAAS is now generally available in public beta. All six endpoints are live:
  • POST /v1/shout — uppercase a string.
  • POST /v1/scream — uppercase with configurable exclamation intensity.
  • POST /v1/whisper — the quiet cousin. Returns lowercase.
  • POST /v1/emphasize — experimental. A model picks which words to bold.
  • GET /v1/health — service health. No auth required.
  • GET /v1/rate-limits — quota introspection.
Breaking change from the private alpha. Authentication moved from the Authorization: Bearer header to a dedicated X-API-Key header. Update any pre-launch integrations accordingly.Request bodies are now capped at 10,000 characters. Larger payloads return 413 Payload Too Large.Start with the Quickstart or jump straight to the API reference.