Gemini CLI pre-release v0.57.0-preview.0 adds new eval validation, tool call formatting, a

EXHIBIT 844 · URGENT

Aug 19, 2026 20:12 UTC github google-gemini/gemini-cli

Gemini CLI pre-release v0.57.0-preview.0 adds new eval validation, tool call formatting, and integrates failure summaries, alongside various core fixes and SSR agent improvements.

READY TO POST:

looks like the gemini cli just got a v0.57.0-preview.0 update, hinting at new eval validation and tool call formatting. could mean better testing for ai outputs.

gemini cli pre-release dropped with features like 'eval validate' and 'tool call formatter'. curious to see how these improve debugging and agent evaluation workflows.

[MERGED across 2 sources: github_releases] shared signal: gemini-cli, gemini-cli-robot --- github_releases :: google-gemini/gemini-cli --- google-gemini/gemini-cli pre-release: v0.57.0-preview.0 name: Release v0.57.0-preview.0 published: 2026-08-19T19:18:35Z url: https://github.com/google-gemini/gemini-cli/releases/tag/v0.57.0-preview.0 ## What's Changed * fix(core): dynamically resolve Cloud Workstations proxy redirect URI for OAuth flows by @amelidev in https://github.com/google-gemini/gemini-cli/pull/28688 * fix(core): resolve swallowed directory mismatch in IDE connections by @amelidev in https://github.com/google-gemini/gemini-cli/pull/28729 * Feat/eval validate by @ved015 in https://github.com/google-gemini/gemini-cli/pull/28344 * feat(evals): add tool call formatter and integrate failure summaries by @ved015 in https://github.com/google-gemini/gemini-cli/pull/28305 * Changelog for v0.55.1 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/28779 * test(e2e): stabilize file-system-interactive test on slow runners by @DavidAPierce in https://github.com/google-gemini/gemini-cli/pull/28793 * fix(core): implement context-aware silent retries and availability TTL for capacity errors (#28761) by @DavidAPierce in https://github.com/google-gemini/gemini-cli/pull/28790 * fix(core): rollback entire multi-turn request on cancellation or abort by @amelidev in https://github.com/google-gemini/gemini-cli/pull/28801 * fix(core): normalize git environment and resolve workspace state mismatch by @luisfelipe-alt in https://github.com/google-gemini/gemini-cli/pull/28792 * [SSR Agent] Issue Fix (19826): Migrate process.env to vi.stubEnv in a2a-server tests by @joneba-google in https://github.com/google-gemini/gemini-cli/pull/28811 * [SSR Agent] Issue Fix (21911): Add composite flag to packages/cli tsconfig by @joneba-google in https://github.com/google-gemini/gemini-cli/pull/28813 * [SSR Agent] Issue Fix (26120): Clarify privacy notice wording and selection