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v0.39.0

Vanessa219/vditorv0.39.0Jun 19, 2026by github-actions[bot]

AI Summary

This release adds VoyageAI rerank support and new examples for Gemini token counting and image generation. It also fixes context document ordering and streaming reasoning history issues. However, it introduces breaking changes to the AgentRun state machine and tool registration mechanism.

Key Highlights

  • Added VoyageAI rerank support
  • Added Gemini mid-stream disruption token-counting example
  • Added Gemini Nano Banana image generation example
  • Fixed context document ordering and streaming reasoning history

Breaking Changes

  • AgentRun state machine changed to sans-IO; agent loops now act as thin drivers
  • Tool registration changed to be deterministic and duplicate-safe (ToolSet now uses IndexMap)

New Features

  • VoyageAI rerank support
  • Gemini mid-stream disruption token-counting example
  • Gemini Nano Banana image generation example

Full Release Notes

### Added

- *(providers)* add VoyageAI rerank support ([#1917](https://github.com/0xPlaygrounds/rig/pull/1917)) (by @sergiomeneses)
- *(agent)* [**breaking**] sans-IO AgentRun state machine; both agent loops become thin drivers ([#1899](https://github.com/0xPlaygrounds/rig/pull/1899)) (by @gold-silver-copper)

### Fixed

- correct possessive pronoun typo in CONTRIBUTING.md ([#1865](https://github.com/0xPlaygrounds/rig/pull/1865)) (by @abhicris) - #1865
- *(tool)* [**breaking**] deterministic, duplicate-safe tool registration + cassette tests ([#1913](https://github.com/0xPlaygrounds/rig/pull/1913)) (by @gold-silver-copper)

### Other

- *(deps)* bump uuid from 1.23.1 to 1.23.3 ([#1907](https://github.com/0xPlaygrounds/rig/pull/1907)) (by @dependabot[bot])
- *(deps)* bump lopdf from 0.40.0 to 0.41.0 ([#1877](https://github.com/0xPlaygrounds/rig/pull/1877)) (by @dependabot[bot])
- *(deps)* bump http from 1.4.0 to 1.4.2 ([#1909](https://github.com/0xPlaygrounds/rig/pull/1909)) (by @dependabot[bot])
- *(deps)* bump futures-timer from 3.0.3 to 3.0.4 ([#1908](https://github.com/0xPlaygrounds/rig/pull/1908)) (by @dependabot[bot])
- *(examples)* add Gemini mid-stream disruption token-counting example ([#1918](https://github.com/0xPlaygrounds/rig/pull/1918)) (by @gold-silver-copper)
- *(tool)* back ToolSet with an IndexMap instead of HashMap + order Vec ([#1916](https://github.com/0xPlaygrounds/rig/pull/1916)) (by @gold-silver-copper)
- de-flake tracing span tests and deepseek permission_control race ([#1915](https://github.com/0xPlaygrounds/rig/pull/1915)) (by @gold-silver-copper) - #1915
- *(agent)* cassette-backed AgentRun coverage against real Gemini turns ([#1901](https://github.com/0xPlaygrounds/rig/pull/1901)) (by @gold-silver-copper)
- Fix streaming reasoning history order ([#1898](https://github.com/0xPlaygrounds/rig/pull/1898)) (by @gold-silver-copper) - #1898
- Fix context document ordering ([#1893](https://github.com/0xPlaygrounds/rig/pull/1893)) (by @gold-silver-copper) - #1893
- Point ecosystem link to awesome-rig ([#1895](https://github.com/0xPlaygrounds/rig/pull/1895)) (by @gold-silver-copper) - #1895
- Add Gemini Nano Banana image generation ([#1889](https://github.com/0xPlaygrounds/rig/pull/1889)) (by @gold-silver-copper) - #1889

### Contributors

* @dependabot[bot]
* @abhicris
* @gold-silver-copper
* @sergiomeneses