feat(acp): support persistent session loading - #5365
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Johannes du Plessis (johannes117) merged 4 commits intoAug 11, 2026
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feat(acp): support persistent session loading#5365Johannes du Plessis (johannes117) merged 4 commits into
Johannes du Plessis (johannes117) merged 4 commits into
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Drop defensive branches the message and tool-call types already preclude, validate a load request before mutating session state, and fold the repeated server/client setup in the new tests into shared helpers.
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Depends on #5365 `dcode --acp` sessions now survive process restarts and can switch among discovered models without losing checkpointed context. --- ACP mode now keeps dcode’s SQLite checkpointer open, builds each session for its cwd and selected model, and advertises the installed model catalog through `session/set_config_option`. <details> <summary>Test plan</summary> - `PYTHONPATH=../acp:../deepagents:. .venv/bin/python -m pytest -q tests/unit_tests/test_main_acp_mode.py` - Ruff and `ty` checks for the changed files </details> Made by [Open SWE](https://openswe.vercel.app/agents/019fdd2c-6961-769a-95e8-e808b66d23d4) --------- Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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> [!CAUTION] > Merging this PR will automatically publish to **PyPI** and create a **GitHub release**. For the full release process, see [`.github/RELEASING.md`](https://github.com/langchain-ai/deepagents/blob/main/.github/RELEASING.md). --- _Release notes preview: keep this section in sync with the package `CHANGELOG.md`. Publish reads the merged CHANGELOG via `release.yml`, not this PR description — keep them aligned anyway so the PR stays an accurate historical record for reviewers and anyone returning later._ --- ## [0.0.10](deepagents-acp==0.0.9...deepagents-acp==0.0.10) (2026-08-12) ### Features - Added support for loading persistent ACP sessions ([#5365](#5365)). _End release notes preview._ --- > [!NOTE] > A **New Contributors** section is appended to the GitHub release notes automatically at publish time (see [Release Pipeline](https://github.com/langchain-ai/deepagents/blob/main/.github/RELEASING.md#release-pipeline), step 2). --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: langchain-oss-automated-triage[bot] <248757908+langchain-oss-automated-triage[bot]@users.noreply.github.com>
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ACP agents can now opt into durable
session/load, restoring session configuration and replaying complete conversation history after process restarts.AgentServerACPpreviously exposed only in-process threads. This adds an explicitload_sessionscapability backed by the graph checkpointer, persists ACP ownership, cwd, mode, and model metadata, and returns protocol errors for unknown sessions or mismatched working directories.Replay is reconstructed across checkpoint history so messages removed from the latest state by compaction are still included, as required by ACP v1. Tool calls and multimodal message content are converted back into their ACP session-update forms. The feature remains opt-in so existing adapters retain their current behavior.
The follow-up dcode integration is stacked separately because
deepagents-acpanddeepagents-codeare independently released.Test plan
PYTHONPATH=libs/acp:libs/deepagents libs/code/.venv/bin/python -m pytest -q libs/acp/testsMade by Open SWE