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rig-v0.37.1

MCP-UI-Org/mcp-uirig-v0.37.1Jun 2, 2026by github-actions[bot]

AI Summary

This release focuses on standardizing tool schemas, improving streaming capabilities across AI providers (Gemini, Anthropic, ChatGPT), and fixing stability issues with SQLite and tool calls. It also includes various dependency updates and enhancements to testing infrastructure.

Key Highlights

  • Replaced hand-rolled schema with schemars in rig-derive for standardization.
  • Enhanced streaming metadata exposure for Gemini and improved function-call delta parsing.
  • Added document citation support for Anthropic and cache control for tools.

New Features

  • Expose streaming response metadata in Gemini provider.
  • Support document citations in Anthropic provider.
  • Expose per-completion-call usage in agent responses.
  • Add streaming metadata cassettes for testing.

Full Release Notes

### Added

- *(rig-derive)* replace hand-rolled schema with schemars in #[rig_tool] ([#1576](https://github.com/0xPlaygrounds/rig/pull/1576)) (by @tomasz-feliksik)
- *(gemini)* expose streaming response metadata ([#1790](https://github.com/0xPlaygrounds/rig/pull/1790)) (by @mateobelanger)
- *(anthropic)* support document citations ([#1778](https://github.com/0xPlaygrounds/rig/pull/1778)) (by @temrjan)

### Fixed

- *(chatgpt)* Handle ChatGPT response.completed events without output field ([#1825](https://github.com/0xPlaygrounds/rig/pull/1825)) (by @geraschenko)
- *(rig-gemini-grpc)* populate FunctionDeclaration.parameters from ToolDefinition ([#1763](https://github.com/0xPlaygrounds/rig/pull/1763)) (by @abhicris)
- fix sqlite threshold and null tool call streaming ([#1786](https://github.com/0xPlaygrounds/rig/pull/1786)) (by @gold-silver-copper) - #1786

### Other

- *(deps)* bump mongodb from 3.6.0 to 3.7.0 ([#1848](https://github.com/0xPlaygrounds/rig/pull/1848)) (by @dependabot[bot])
- *(deps)* bump zerocopy from 0.8.48 to 0.8.50 ([#1847](https://github.com/0xPlaygrounds/rig/pull/1847)) (by @dependabot[bot])
- *(deps)* bump google-cloud-aiplatform-v1 from 1.10.0 to 1.11.0 ([#1846](https://github.com/0xPlaygrounds/rig/pull/1846)) (by @dependabot[bot])
- *(deps)* bump serde_json from 1.0.149 to 1.0.150 ([#1845](https://github.com/0xPlaygrounds/rig/pull/1845)) (by @dependabot[bot])
- *(deps)* bump tonic from 0.14.5 to 0.14.6 ([#1844](https://github.com/0xPlaygrounds/rig/pull/1844)) (by @dependabot[bot])
- Fix parsing of streamed function-call argument deltas ([#1828](https://github.com/0xPlaygrounds/rig/pull/1828)) (by @geraschenko) - #1828
- *(deps)* port dependency bumps and Rust 1.91 ([#1842](https://github.com/0xPlaygrounds/rig/pull/1842)) (by @gold-silver-copper)
- *(deps)* bump quick-xml from 0.39.4 to 0.40.1 ([#1818](https://github.com/0xPlaygrounds/rig/pull/1818)) (by @dependabot[bot])
- *(deps)* bump google-cloud-auth from 1.9.0 to 1.10.0 ([#1817](https://github.com/0xPlaygrounds/rig/pull/1817)) (by @dependabot[bot])
- Stabilize MongoDB vector search test ([#1841](https://github.com/0xPlaygrounds/rig/pull/1841)) (by @gold-silver-copper) - #1841
- fix VT Code line grammar in README ([#1824](https://github.com/0xPlaygrounds/rig/pull/1824)) (by @Shaurya-Sethi) - #1824
- [codex] Validate model tool calls ([#1823](https://github.com/0xPlaygrounds/rig/pull/1823)) (by @gold-silver-copper) - #1823
- [codex] apply Anthropic cache control to tools ([#1815](https://github.com/0xPlaygrounds/rig/pull/1815)) (by @gold-silver-copper) - #1815
- *(deps)* bump tokio-tungstenite from 0.23.1 to 0.28.0 ([#1784](https://github.com/0xPlaygrounds/rig/pull/1784)) (by @dependabot[bot])
- *(deps)* bump rmcp from 1.6.0 to 1.7.0 ([#1783](https://github.com/0xPlaygrounds/rig/pull/1783)) (by @dependabot[bot])
- *(deps)* bump tokio from 1.52.1 to 1.52.3 ([#1782](https://github.com/0xPlaygrounds/rig/pull/1782)) (by @dependabot[bot])
- Expose per-completion-call usage in agent responses ([#1787](https://github.com/0xPlaygrounds/rig/pull/1787)) (by @gold-silver-copper) - #1787
- *(gemini)* add streaming metadata cassettes ([#1777](https://github.com/0xPlaygrounds/rig/pull/1777)) (by @gold-silver-copper)
- Add replayable provider cassette tests ([#1769](https://github.com/0xPlaygrounds/rig/pull/1769)) (by @gold-silver-copper) - #1769

### Contributors

* @dependabot[bot]
* @geraschenko
* @tomasz-feliksik
* @gold-silver-copper
* @abhicris
* @Shaurya-Sethi
* @mateobelanger
* @temrjan