release: 0.3.0 #42

stainless-app · 2026-01-13T18:34:38Z

Automated Release PR

0.3.0 (2026-02-10)

Full Changelog: v0.2.0...v0.3.0

Features

client: add custom JSON encoder for extended type support (30a7195)
client: add support for binary request streaming (48f4cca)
runner: dependency-aware parallel tool execution (7e6716f)
runner: dependency-aware parallel tool execution (#44) (a72f70f)

Bug Fixes

api: add byok provider model (bf52572)
api: default auth server (38c637a)
api: narrow types (3e16d98)
docs: fix mcp installation instructions for remote servers (e4e3619)
runner: allow local tool execution in mixed MCP+local scenarios (5d0ce6d)
runner: inject server tool results into conversation for mixed tool calls (288b70e)
runner: preserve thought_signature in tool call accumulation and extraction (77e5958)
runner: server tool results, mixed-tool execution, thought_signature passthrough (#45) (637d9b8)
runner: skip early break when local tools need execution alongside MCP (ad7379b)

Chores

api: small type fixes (2268aff)
ci: add missing environment (0ec49ed)
ci: upgrade actions/github-script (cf53a9e)
internal: bump dependencies (696aacf)
internal: update actions/checkout version (c72dfca)
runner: strip commented-out production version and banner comments from core.py (59350e3)

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stainless-app · 2026-01-13T18:34:53Z

🧪 Testing

To try out this version of the SDK, run:

pip install 'https://pkg.stainless.com/s/dedalus-sdk-python/2268aff5c14821d23341baf4b65d7d7e5a26b7b7/dedalus_labs-0.2.0-py3-none-any.whl'

Expires at: Thu, 12 Mar 2026 07:53:11 GMT
Updated at: Tue, 10 Feb 2026 07:53:11 GMT

cursor · 2026-01-22T04:07:52Z

src/dedalus_labs/_base_client.py

        *,
        cast_to: Type[ResponseT],
        body: Body | None = None,
+        content: BinaryTypes | None = None,


Iterator content silently lost on request retry

Medium Severity

When content is an Iterable[bytes] (like a generator), the iterator is consumed on the first request attempt. If a retryable error occurs, the retry logic uses model_copy which performs a shallow copy, so options.content still references the same exhausted iterator. Subsequent retry attempts send an empty request body. This is exacerbated by DEFAULT_MAX_RETRIES being increased from 0 to 2 in this same PR. Users passing generator-based content could experience silent data loss on transient failures.

Additional Locations (1)

src/dedalus_labs/_constants.py#L9-L10

…ool calls

…de MCP

… extraction

cursor · 2026-02-07T10:42:33Z

PR Summary

Medium Risk
Updates core HTTP request construction (JSON serialization, retries, binary streaming) and materially refactors runner tool-execution scheduling; both can affect request semantics and runtime behavior across the SDK despite being well-scoped.

Overview
Release 0.3.0 bumps package/version metadata and updates docs/CI for the new release (incl. GitHub Actions upgrades, PyPI workflow production environment, and updated MCP install links).

On the SDK side, this adds new API surfaces for OCR (POST /v1/ocr) and Responses (POST /v1/responses), wires them into the main client (including raw/streaming wrappers), and extends audio speech typing to support additional TTS model IDs and custom voices.

The HTTP client is updated to (1) support sending raw/binary request bodies via a new content parameter (sync+async, with deprecation warnings for passing bytes as body), (2) serialize JSON bodies using a new openapi_dumps encoder that handles datetime and pydantic models, and (3) change default retry behavior to 2 with increased backoff limits. The runner is refactored to forward a broader set of chat-completions parameters, preserve thought_signature during tool-call accumulation, and execute local tools via a new dependency-aware scheduler (topo-sorted, parallel per layer in async) while handling mixed MCP+local tool scenarios more robustly.

^{Written by Cursor Bugbot for commit 1ca826f. This will update automatically on new commits. Configure here.}

…ents from core.py

…ture passthrough (#45)

cursor · 2026-02-07T11:23:53Z

src/dedalus_labs/lib/runner/core.py

+                        [],
+                        steps,
+                        verbose=exec_config.verbose,
+                    )


Missing assistant message before tool execution in streaming paths

High Severity

Both streaming paths (_execute_streaming_async and _execute_streaming_sync) call the scheduler's execute_local_tools_async/execute_local_tools_sync without first appending an assistant message with tool_calls to the messages list. The scheduler's own docstring explicitly states the caller is responsible for this. The non-streaming paths (_execute_tool_calls at line 1204, _execute_tool_calls_sync at line 1229) correctly append {"role": "assistant", "tool_calls": ...} before calling the scheduler. The old streaming code also did this but the line was removed during the refactoring. This produces a malformed conversation (tool messages without a preceding assistant message), which will cause the API to reject subsequent requests.

Additional Locations (1)

src/dedalus_labs/lib/runner/core.py#L1067-L1075

cursor · 2026-02-07T11:23:53Z

src/dedalus_labs/lib/runner/core.py

+                # Collect MCP tool results emitted by the server
+                chunk_extra = getattr(chunk, "__pydantic_extra__", None) or {}
+                if isinstance(chunk_extra, dict) and "mcp_tool_results" in chunk_extra:
+                    mcp_tool_results_from_server = chunk_extra["mcp_tool_results"]


Collected MCP tool results variable is never used

Low Severity

mcp_tool_results_from_server is assigned in both _execute_streaming_async and _execute_streaming_sync but is never read after assignment. The variable is dead code — the collected MCP tool results are silently discarded. Given the PR includes a fix for "inject server tool results into conversation for mixed tool calls," this may represent an incomplete implementation for the streaming paths.

Additional Locations (1)

src/dedalus_labs/lib/runner/core.py#L974-L983

cursor

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is ON. A Cloud Agent has been kicked off to fix the reported issue.}

cursor · 2026-02-10T08:03:56Z

src/dedalus_labs/lib/runner/core.py

            content_chunks = 0
            tool_call_chunks = 0
            finish_reason = None
+            mcp_tool_results_from_server: list = []


Unbound response variable when loop body never executes

Medium Severity

The newly added _extract_mcp_results(response) after the while loop in both _execute_turns_async and _execute_turns_sync references response, which is only assigned inside the loop body. If max_steps is zero or negative (allowed by the run() API and by _apply_policy override), the loop never executes, response is never bound, and this line raises an UnboundLocalError. The old code's return statement did not reference response, so this is a new crash path.

Additional Locations (1)

src/dedalus_labs/lib/runner/core.py#L888-L890

cursor · 2026-02-10T08:06:35Z

Bugbot Autofix prepared fixes for 1 of the 1 bugs found in the latest run.

✅ Fixed: Unbound response variable when loop body never executes
- Initialized response = None before the while loops in both _execute_turns_async and _execute_turns_sync, ensuring the variable is always bound even when max_steps <= 0.

Or push these changes by commenting:

@cursor push 28c2d03413

Preview (28c2d03413)

diff --git a/src/dedalus_labs/lib/runner/core.py b/src/dedalus_labs/lib/runner/core.py
--- a/src/dedalus_labs/lib/runner/core.py
+++ b/src/dedalus_labs/lib/runner/core.py
@@ -508,6 +508,7 @@
         final_text = ""
         tool_results: list[ToolResult] = []
         tools_called: list[str] = []
+        response = None
 
         while steps < exec_config.max_steps:
             steps += 1
@@ -809,6 +810,7 @@
         final_text = ""
         tool_results: list[ToolResult] = []
         tools_called: list[str] = []
+        response = None
 
         while steps < exec_config.max_steps:
             steps += 1

feat(client): add support for binary request streaming

48f4cca

stainless-app bot added the autorelease: pending label Jan 13, 2026

chore(internal): update actions/checkout version

c72dfca

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from ac5c5d9 to c72a9be Compare January 16, 2026 18:31

fix(api): default auth server

38c637a

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from c72a9be to 00246c5 Compare January 22, 2026 03:58

cursor bot reviewed Jan 22, 2026

View reviewed changes

chore(ci): upgrade actions/github-script

cf53a9e

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from 00246c5 to f4bfcf4 Compare January 23, 2026 18:15

fix(docs): fix mcp installation instructions for remote servers

e4e3619

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from f4bfcf4 to 120f4f7 Compare January 28, 2026 16:37

windsornguyen and others added 6 commits February 6, 2026 18:47

feat(runner): dependency-aware parallel tool execution

7e6716f

fix(runner): inject server tool results into conversation for mixed t…

288b70e

…ool calls

fix(runner): skip early break when local tools need execution alongsi…

ad7379b

…de MCP

fix(runner): preserve thought_signature in tool call accumulation and…

77e5958

… extraction

fix(runner): allow local tool execution in mixed MCP+local scenarios

5d0ce6d

feat(runner): dependency-aware parallel tool execution (#44)

a72f70f

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from 120f4f7 to b02a9df Compare February 7, 2026 10:42

aryanma and others added 3 commits February 7, 2026 02:50

chore(runner): strip commented-out production version and banner comm…

59350e3

…ents from core.py

Merge branch 'next' into fix/gemini-thought-signature-passthrough

a8a9685

fix(runner): server tool results, mixed-tool execution, thought_signa…

637d9b8

…ture passthrough (#45)

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from b02a9df to 3c98764 Compare February 7, 2026 11:13

cursor bot reviewed Feb 7, 2026

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stainless-app bot added 3 commits February 7, 2026 15:33

feat(client): add custom JSON encoder for extended type support

30a7195

chore(ci): add missing environment

0ec49ed

fix(api): add byok provider model

bf52572

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from 3c98764 to b8e048e Compare February 7, 2026 15:33

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from b8e048e to a3df0b4 Compare February 7, 2026 15:34

chore(internal): bump dependencies

696aacf

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from a3df0b4 to d04fc33 Compare February 9, 2026 14:37

fix(api): narrow types

3e16d98

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from d04fc33 to 2fef7e6 Compare February 10, 2026 06:32

stainless-app bot added 2 commits February 10, 2026 07:52

chore(api): small type fixes

2268aff

release: 0.3.0

1ca826f

stainless-app bot force-pushed the release-please--branches--main--changes--next branch from 2fef7e6 to 1ca826f Compare February 10, 2026 07:52

cursor bot reviewed Feb 10, 2026

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release: 0.3.0 #42

release: 0.3.0 #42

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Automated Release PR

0.3.0 (2026-02-10)

Features

Bug Fixes

Chores

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Iterator content silently lost on request retry

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PR Summary

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Missing assistant message before tool execution in streaming paths

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Collected MCP tool results variable is never used

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Unbound response variable when loop body never executes

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Unbound `response` variable when loop body never executes