Agent SDK v0.13.0

This release improves how the Agent SDK handles model capabilities across providers and environments. It adds shared model rules, broader reasoning effort support, browser-safe access to model rules, and automatic retries when a model rejects unsupported settings. No migration or special upgrade step is required.

Highlights

• Ship shared model rules for SDK consumers
  The SDK now exposes shared model rules data through its public surface, making model capability handling more consistent across integrations and environments.
• Retry requests after removing unsupported model settings
  When a model rejects unsupported parameters, the SDK can adjust the request and retry automatically. This reduces manual fallback handling in client code.
• Support broader reasoning effort values and newer reasoning models
  The SDK now accepts higher reasoning effort levels and recognizes newer GPT reasoning model IDs, so reasoning-specific request handling applies in more cases.
• Expose a browser-safe model rules entry point
  Browser bundles can now consume model rules through a dedicated entry point, and learned model fixes remain separated by backend.

Full changelog: v0.12.0...main