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v0.105.6

Agenta-AI/agentav0.105.6Jul 19, 2026by mmabrouk

AI Summary

Significant updates to the SDK and Runner, including support for Claude extended-thinking and new client tools in remote sandboxes, along with a portable QA harness.

Key Highlights

  • Client tools on Claude now work in remote sandboxes
  • Surface Claude extended-thinking in the playground
  • Added a portable wire-level QA harness (agent release gate)
  • Fixed active-tab locator that was breaking acceptance tests

New Features

  • Emit tool-output-denied for UI differentiation
  • Client tools on Claude in remote sandboxes
  • Surface Claude extended-thinking in the playground

Full Release Notes

## What's Changed
* test(web): fix the active-tab locator that broke five acceptance tests by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5378
* feat(sdk): emit tool-output-denied so the UI can tell a denial from a failure by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5381
* feat(runner): client tools on Claude in remote sandboxes by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5383
* [AGE-3962] fix(runner): surface Claude extended-thinking in the playground by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5380
* docs(readme): reposition around building and running agents by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5390
* fix(auth): correct exc_infp typo to exc_info in auto-join error logging by @truecallerabreham in https://github.com/Agenta-AI/agenta/pull/5377
* docs: add truecallerabreham as a contributor for bug by @allcontributors[bot] in https://github.com/Agenta-AI/agenta/pull/5379
* fix(sdk): use Claude harness model identifiers by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5365
* [fix] Refresh workflow name after rename by @ashrafchowdury in https://github.com/Agenta-AI/agenta/pull/5330
* test(sdk): align bare Claude alias test with the curated alias list by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5393
* test(agent): add the agent release gate — a portable wire-level QA harness by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/5351
* [fix] Enable agent rename on the onboarding playground [AGE-3954] by @ashrafchowdury in https://github.com/Agenta-AI/agenta/pull/5340
* fix(frontend): Show raw payload for commit deltas outside parameters by @ardaerzin in https://github.com/Agenta-AI/agenta/pull/5129
* [release] v0.105.6 by @github-actions[bot] in https://github.com/Agenta-AI/agenta/pull/5385

## New Contributors
* @truecallerabreham made their first contribution in https://github.com/Agenta-AI/agenta/pull/5377

**Full Changelog**: https://github.com/Agenta-AI/agenta/compare/v0.105.5...v0.105.6