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v3.3.2

UseInterstellar/Interstellarv3.3.2Apr 28, 2026by kichanyurd

AI Summary

The 3.3.2 release focuses on stability and security, introducing timeout controls for plugins, improving diagnostic error messages, and fixing critical bugs in event loops and context variables.

Key Highlights

  • Added `PARLANT_TOOL_CALL_TIMEOUT` environment variable
  • Fixed WebSocketLogger event loop starvation
  • Fixed `p.Server.current` availability with Uvicorn 0.39+
  • Fixed MCP tool clients getting stuck on stale sessions
  • Security updates for authlib, requests, fastmcp, and others

New Features

  • PARLANT_TOOL_CALL_TIMEOUT environment variable

Full Release Notes

## [3.3.2] - 2026-04-28

### Added

- Add `PARLANT_TOOL_CALL_TIMEOUT` environment variable to control the plugin tool-call timeout

### Changed

- Include guideline description (in addition to the condition) in matcher prompts
- Render active journeys' descriptions in the canned response draft prompt
- Improve error messages surfaced by `EmcieService` to be more diagnostic
- Relax the `aiopenapi3` pin to `>=0.8.1,<0.9.0`

### Fixed

- Fix redundant batch creation in `ToolCaller` across guideline matches, which in some agents caused a lot of latency unnecessarily
- Fix WebSocketLogger event loop starvation which progressively blocked the async event loop, causing increasing latency over time
- Fix `p.Server.current` becoming unavailable in the `resolve_tool` plugin endpoint under Uvicorn 0.39+. Context vars are now restored at the start of `resolve_tool`, mirroring the existing pattern in `call_tool`, so choice providers depending on `p.Server.current` work again
- Fix MCP tool clients getting stuck after sessions go stale. Clients now reconnect automatically instead of failing subsequent calls

### Security

- Upgrade dependencies to address known CVEs: authlib (>=1.6.11), requests (>=2.33.0), fastmcp (>=3.2.0), litellm (>=1.83.0), pytest (>=9.0.3), pyjwt (>=2.11.1), and constrain transitive deps — aiohttp, cryptography, pillow, pyopenssl, werkzeug, Mako, pyasn1, python-multipart, orjson, Pygments, diskcache
- Upgrade chat frontend: vite (>=7.3.2) and override transitive deps: picomatch, lodash, flatted, brace-expansion, immutable, yaml