Agent Breaking Changes_

← Cline

Cline SDK v0.0.90

2026-10-02 · official notes

Summary

• Agent teams no longer slow down as a session runs or while a teammate is streaming. Every streamed chunk and 2-second heartbeat used to re-save the whole team state, including every finished teammate'
• Standalone provider requests made outside a session (such as commit message generation) can now resolve Cline surface headers. sessionId is optional in resolveProviderRequestHeaders, and X-Task-ID is
• Refreshed the model catalog. Default models change for DigitalOcean (GPT-6.1 Sol), GMI Cloud (Qwen 3.8 Flash), NanoGPT (Pareto 26.10 Preview), Nvidia (DeepSeek V4.1 Flash), and Ofox (GPT-6.1 Sol)

Full notes

- Agent teams no longer slow down as a session runs or while a teammate is streaming. Every streamed chunk and 2-second heartbeat used to re-save the whole team state, including every finished teammate's full transcript (one local `teams.db` reached 1.66 GB, with a single run row rewritten ~339k times). Stream chunks and heartbeats now go to live UIs only and are never persisted, only changed entities are written (batched into one transaction every ~300 ms), run records keep a summary instead of the transcript, and `team_events` is capped per team (2000 rows, 30 days). SQLite team storage moves to schema v2 with a one-time migration that compacts existing data; `SqliteTeamStore.vacuum()` returns the freed space when called explicitly. Failed team writes are retried instead of dropped
- Standalone provider requests made outside a session (such as commit message generation) can now resolve Cline surface headers. `sessionId` is optional in `resolveProviderRequestHeaders`, and `X-Task-ID` is omitted rather than sent empty
- Refreshed the model catalog. Default models change for DigitalOcean (GPT-6.1 Sol), GMI Cloud (Qwen 3.8 Flash), NanoGPT (Pareto 26.10 Preview), Nvidia (DeepSeek V4.1 Flash), and Ofox (GPT-6.1 Sol)

**Full Changelog**: https://github.com/cline/cline/compare/sdk/sdk/v0.0.89...sdk/sdk/v0.0.90