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LangSmith SDK 0.14.9

UpdateyesterdayUnverifiedAdded Oct 16, 2026

- fix(py): stop sandbox run() from waiting 100ms for the server's TCP close feat: send OTLP traces to an Agent environment Fix Python comparative evaluator scores when randomizing concurrent runs chore(deps): bump multidict from 6.7.1 to 6.9.1 in /python feat(py): use TypedDict for AgentAddress instead of dataclass for simpler ser/de release(py): 0.14.9

Topics: AI agents, Developer tools

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LangSmith SDK 0.14.8

- fix(py): send session_id on RunTree.patch fix: keep punctuation out of freeze guard links chore(deps): bump source-map-js from 1.2.1 to 1.2.2 in /js fix(py): make the /runs/multipart 404 fallback to /runs/batch reachable feat(sandbox): accept any JOSE asymmetric algorithm chosen by the JWKS key (python) feat(sandbox): customer-managed KMS keys for S3...

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LangSmith SDK 0.14.6

- release(js): 0.10.9 ci: freeze js/ now that the JS SDK moved ci: point frozen-folder PRs to the right repo fix(wrappers): don't require completions resource in wrap_anthropic release(py): 0.14.6

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LangSmith SDK 0.14.5

- release(js): 0.10.8 chore(deps): bump the actions-minor-and-patch group with 3 updates chore(deps-dev): bump types-psutil from 7.2.2.20260827 to 7.2.2.20260906 in /python chore(deps): bump the actions-major group with 2 updates chore(deps): bump the py-minor-and-patch group in /python with 8 updates fix(tests): prevent background uploads from restoring...

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LangSmith SDK 0.14.4

- release(js): 0.10.7 ci: request Open SWE investigation of nightly SDK failures refactor: take addresses as strings (Python and JS) fix(py,js): correctly resolve the full OTLP traces endpoint release(py): 0.14.4

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LangSmith SDK 0.14.3

- feat(js): add address() handle for agent addressing chore(js): patch vulnerable development dependencies fix(sandbox): retry transient WebSocket failures before command start chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /python chore(deps): bump pyjwt from 2.13.0 to 2.15.0 in /python chore(deps): bump undici from 7.29.0 to 7.29.1 in...

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LangSmith SDK 0.14.2

- fix(js): missing OTel exports for tool name, call_id and definitions chore: increase Python and JS dependency delay to seven days feat(python): add ls.address handle for agent addressing fix(py): preserve response on wrapped HTTP errors fix(js): stub OpenAI transport in completions test fix(py,js): only the primary write replica keeps the original run ids...

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LangSmith SDK 0.14.1

- release(js): 0.10.5 ci: mirror merges to the staging repos ci: drop the push-based mirror workflow, staging pulls instead test(py): select s3_urls so list_runs and list_threads return attachments fix(py): fix missing OTel exports for tool_call_id and tool_definitions fix(py): trace ClaudeSDKClient.receive_messages() feat(sandbox): verify service URL user...

Also shipped on Oct 15, 2026

LangChain in October 2026