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Title: feat: Increase default stdio buffer limit and allow configuration by jacoblee93 · Pull Request #59 · agentclientprotocol/python-sdk · GitHub

Open Graph Title: feat: Increase default stdio buffer limit and allow configuration by jacoblee93 · Pull Request #59 · agentclientprotocol/python-sdk

X Title: feat: Increase default stdio buffer limit and allow configuration by jacoblee93 · Pull Request #59 · agentclientprotocol/python-sdk

Description: Summary The default stdio stream buffer size is only 64kb, which means you get errors like this when trying to send messages larger than that via ACP: Filesizes above that are quite common for multimodal data The new default of 50MB should handle most practical multimodal cases. Definitely open to tweaking this default though if anyone has strong feelings! And it's now configurable if needed Related issues Testing Added tests and ran appropriate make commands Docs & screenshots Not sure how to best document, assuming this will automatically propagate to API refs? Checklist Conventional Commit title (e.g. feat:, fix:). Tests cover the change or are not required (explain above). Docs/examples updated when behaviour is user-facing. Schema regenerations (make gen-all) are called out if applicable.

Open Graph Description: Summary The default stdio stream buffer size is only 64kb, which means you get errors like this when trying to send messages larger than that via ACP: Filesizes above that are quite common for mul...

X Description: Summary The default stdio stream buffer size is only 64kb, which means you get errors like this when trying to send messages larger than that via ACP: Filesizes above that are quite common for mul...

Opengraph URL: https://github.com/agentclientprotocol/python-sdk/pull/59

X: @github

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8b97b7f Increase default stdio buffer limit and allow configuration jacoblee93 Jan 14, 2026 https://patch-diff.githubusercontent.com/agentclientprotocol/python-sdk/pull/59/commits/8b97b7f292ecb3a862d8001065e19b8619b6fb23
65224b8 Format jacoblee93 Jan 14, 2026 https://patch-diff.githubusercontent.com/agentclientprotocol/python-sdk/pull/59/commits/65224b871726fab295627e5d654cdf76466efff8
55bc774 Lint jacoblee93 Jan 14, 2026 https://patch-diff.githubusercontent.com/agentclientprotocol/python-sdk/pull/59/commits/55bc7746686f073f1c8ff1bcdd03187147f959ed
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