v0.99.0

0.99.0 (2026-10-28)

Features

• Add thinking display configuration (#1081) (2f1f4d1)
• send embedded blob resources in prompts to Claude (#1460) (d0ee308)
• tell the client when an MCP server fails to start (#1464) (54b35ee)
• update to Claude Agent SDK 0.3.312 (#1471) (4cb8906)
• v2: send the current session info on session/resume (#1462) (f6ed4a4)

Bug Fixes

• deny a background permission request that the client cancels (#1466) (f646c82)
• don't report decline when the client can't render an MCP elicitation (#1465) (54b869c)
• list the current model among the model config option's values (#1463) (8e6fe92)
• report EnterPlanMode tool calls with the switch_mode kind (#1467) (93c1f43)
• return ACP error codes for unknown sessions and invalid config values (#1458) (c2e85cb)
• update ACP SDK to 2.1.0 (schema v1.27.0 / v2.0.0-alpha.10) (9f9aebf)
• v2: keep clients in sync with config changes and replayed tool calls (#1461) (2a0c188)
• v2: reject MCP transports and prompt content the agent doesn't advertise (#1459) (2480888)