Bump dev version: v1.26.0.dev0 by @albertvillanova in #2273
Add new possible error message to test of LiteLLM providers w/o key by @albertvillanova in #2275
Fix typo cleanups across docs, examples, and tests by @luojiyin1987 in #2208
fix: correct f-string escaping in ToolSerializer.dumps error message by @Ricardo-M-L in #2134
Revert fix: correct f-string escaping by @albertvillanova in #2291
Update docstring of LocalPythonExecutor by @albertvillanova in #2292
Add Exa as a search engine option in WebSearchTool by @10ishq in #2139
Remove remote WasmExecutor by @albertvillanova in #2321

New Contributors

@luojiyin1987 made their first contribution in #2208
@Ricardo-M-L made their first contribution in #2134
@10ishq made their first contribution in #2139

Full Changelog: v1.25.0...v1.26.0

详细ChangeLog

v1.25.0

2026年05月14日

What's Changed

Bump dev version: v1.25.0.dev0 by @albertvillanova in #1939
Fix import of TokenUsage by @albertvillanova in #1943
Add MLflow integration doc by @B-Step62 in #1884
Refactor agent/model deserialization: Replace importlib with registry pattern by @albertvillanova in #1944
Update _function_type_hints_utils.py: CohereForAI -> CohereLabs by @Michellehbn in #1946
Fix High impact vulnerability on remote executors by @nnfrog in #1637
Fix SafeSerializer.get_deserializer_code by @albertvillanova in #1983
Fix RemotePythonExecutor._deserialize_final_answer for legacy no-prefix pickle by @albertvillanova in #1984
Test 'pickle:...' payloads are properly decoded by @albertvillanova in #1985
Remove support for legacy no-prefix pickle by @albertvillanova in #1986
Create docs reference page for Python executors by @albertvillanova in #1987
Isolate WasmExecutor Deno cache to per-instance temp directory by @albertvillanova in #1995
Switch wildcard bind to loopback-only endpoint in WasmExecutor by @albertvillanova in #2025
Use token in DockerExecutor by @albertvillanova in #2027
Remove allow_origin from Docker and Modal executors by @albertvillanova in #2028
Use token in WasmExecutor by @albertvillanova in #2031
Fix evaluate_with() calling exit on wrong object by @dubin555 in #2029
Fix evaluate_with by suppressing exception if truthy exit by @albertvillanova in #2033
Use requests.Session in WasmExecutor by @albertvillanova in #2032
Fix Rich MarkupError in AgentLogger.log_task by rendering untrusted text safely by @Barcavin in #1894
Emphasise sandboxing is required; LocalPythonExecutor is not a security tool by @zsims in #2039
Fix log_error rendering brackets as Rich markup by @albertvillanova in #2077
Support huggingface-hub >= 1 by @merveenoyan in #2075
Remove unused safe_serialization param from _websocket_run_code_raise_errors by @albertvillanova in #2131
Set allow_pickle default to False in internal calls by @albertvillanova in #2132
🔒 Pin GitHub Actions to commit SHAs by @paulinebm in #2149
chore: bump doc-builder SHA for PR upload workflow by @rtrompier in #2194
chore: bump doc-builder SHA for main doc build workflow by @rtrompier in #2219

New Contributors

@B-Step62 made their first contribution in #1884
@Michellehbn made their first contribution in #1946
@dubin555 made their first contribution in #2029
@zsims made their first contribution in #2039
@paulinebm made their first contribution in #2149
@rtrompier made their first contribution in #2194

Full Changelog: v1.24.0...v1.25.0

详细ChangeLog

v1.24.0

2026年01月16日

What's Changed

Bump version to 1.24 by @aymeric-roucher in #1871
Fix: Add backward compatibility for deprecated HfApiModel by @MohammadKassas143 in #1863
Fix typo in secure_code_execution.md by @jonathanagustin in #1892
Update no-stop-sequence model list to support gpt-5.2* by @aymeric-roucher in #1895
Fix run_gaia.py token_counts when managed agent is called more than once by @suryabdev in #1878
🌐 [i18n-KO] Translated tools.md to Korean by @Kim-Ju-won in #1835
Support passing additional params to apply_chat_template by @albertvillanova in #1902
fix(gradio_ui): Gradio 6 compatibility by @alejandro-ao in #1903
Coerce tool calls from APIs into smolagents ChatMessageToolCall format by @aymeric-roucher in #1900
Add FinalAnswerStep to possible step_callbacks by @suryabdev in #1881
Upgrade GitHub Actions for Node 24 compatibility by @salmanmkc in #1909
fix: prevent FinalAnswerException from being caught by except Exception by @majiayu000 in #1914
Add DeepWiki badge to README by @aymeric-roucher in #1846
Implement robust timeout mechanism for Python execution by @albertvillanova in #1910

New Contributors

@MohammadKassas143 made their first contribution in #1863
@jonathanagustin made their first contribution in #1892
@alejandro-ao made their first contribution in #1903
@salmanmkc made their first contribution in #1909
@majiayu000 made their first contribution in #1914

Full Changelog: v1.23.0...v1.24.0

详细ChangeLog

v1.23.0

2025年11月17日

Improvements ✨

Update final answer checks to accept the agent instance by @Zoe14 in #1648
Dialog mode CLI by @aymeric-roucher in #1540
Add Blaxel support for remote code execution by @Joffref in #1791
Proposition: Add exponential backoff with jitter for retries by @suryabdev in #1829
Cut generation at stop sequence post generation by @aymeric-roucher in #1802
Move executor type validation to python executor creation by @Lrakotoson in #1800
Support custom Python code executor in CodeAgent by @albertvillanova in #1707
Retry on rate limit errors by @aymeric-roucher in #1801
Change default InferenceClient model to Qwen/Qwen3-Next-80B-A3B-Thinking by @suryabdev in #1813
Remove 'Server' from model names in doc by @aymeric-roucher in #1812
Optimize comprehension evaluation with generator-based approach in LocalPythonExecutor by @albertvillanova in #1824
LocalPythonExecutor: Add support for nested dictcomp and setcomp by @suryabdev in #1823
Support parsing anyOf from MCP tools by @duguyue100 in #1708
Add Modal as sandbox option to docs front page by @sandcat100 in #1865
make additional_args nullable for managed agents by @nflo in #1827
vLLM: Move from guided_options_request to structured_outputs by @suryabdev in #1805

Fixes 🛠️

Fix agent logs: logging "None" and simplify the logic by @albertvillanova in #1788
Fix dict(message) bug in AgentMemory.replay for ChatMessage objects by @Flakes342 in #1763
Fix LocalPythonExecutor support for Enum and other metaclasses by @colesmcintosh in #1797
Handle None content in stop-sequence trimming by @chahn in #1826
Fix minor benchmark script bugs by @suryabdev in #1822
Fix YAML scanner error when building documentation by @albertvillanova in #1841
Pin huggingface-hub <1.0.0 to fix failed to build tokenizers by @albertvillanova in #1844
Fixed SyntaxError format: keep exception type and message on same line (#835) by @balazsthomay in #1864
Fix CLI Tool.from_space() call by auto-generating name and description (#1535) by @balazsthomay in #1859
Add gpt-5.1 support by @suryabdev in #1868
bug: role not converted back to enum by @njbrake in #1833
Parallel tool calls lose OpenTelemetry context: tool spans not nested under agent step by @Barcavin in #1840

Documentation 📚

Bump dev version: v1.23.0.dev0 by @albertvillanova in #1787
🌐 [i18n-KO] Translated memory.md to Korean by @HyunZ118 in #1793
🌐 [i18n-KO] Translated using_different_models.md to Korean by @FacerAin in #1772
🌐 [i18n-KO] Translated guided_tour.md to Korean by @FacerAin in #1711
🌐 [i18n-KO] Translated async_agent.md to Korean by @FacerAin in #1749
🌐 [i18n-KO] Translated agents.md to Korean by @Kim-Ju-won in #1720
🌐 [i18n-KO] Translated rag.md to Korean by @Kim-Ju-won in #1646
Documentation: Minor fixes by @suryabdev in #1809
🌐 [i18n-KO] Translated web_browser.md to Korean by @FacerAin in #1748
[i18n-es] Translating docs to spanish by @1-echo in #1806
🌐 [i18n-KO] Translated plan_customization.md to Korean by @FacerAin in #1771
🌐 [i18n-KO] Translated inspect_runs.md to Korean by @FacerAin in #1747
Build PR documentation for all languages by @albertvillanova in #1842

Full Changelog: v1.22.0...v1.23.0

详细ChangeLog

v1.22.0

2025年09月25日

What's Changed

Bump dev version: v1.22.0.dev0 by @albertvillanova in #1657
refactor(PythonExecutor): inherit from ABC and declare abstract methods by @HairlessVillager in #1654
Fix error for GPT-5 not supporting the stop parameter by @Xmader in #1662
Enable return_full_result directly in run method by @aymeric-roucher in #1658
Make RunResult json serializable by @aymeric-roucher in #1659
Change truncation to remove end rather than middle by @aymeric-roucher in #1665
Document that model kwargs are forwarded to model completion call by @albertvillanova in #1679
Fix missing kwargs forward to vLLM model generate call by @albertvillanova in #1680
Raise RuntimeError with LiteLLM response details if no choices by @albertvillanova in #1683
Fix AmazonBedrockModel with reasoning/thinking content by @albertvillanova in #1681
Fix installation command in README by quoting extra by @shahgahmed in #1685
CI hotfix: Pin openai < 1.100.0 for litellm extra by @albertvillanova in #1693
Support openai 1.100 for litellm extra by @albertvillanova in #1698
Pin telemetry extra >=0.1.15 to use new TokenUsage structure by @albertvillanova in #1699
Add AGENTS.md by @albertvillanova in #1701
Test telemetry extra by @albertvillanova in #1700
Replace slim with bullseye base image in Docker executor by @albertvillanova in #1702
fix: error missing f-string by @njbrake in #1691
Support custom Dockerfile in DockerExecutor by @albertvillanova in #1705
Support MCP structured output and output schema by @chahn in #1663
Improve agent image handling by @aaron-ang in #1601
🌐 [i18n-KO] Translated multiagents.md to Korean by @pyapyapya in #1644
Fix CI 403 error for Wikipedia page in test_visit_webpage by @albertvillanova in #1716
fix typos in the system prompt by @Frame17 in #1710
Fix pip install commands by quoting extras by @albertvillanova in #1690
Fix deprecation warning about parameter messages by @albertvillanova in #1718
Fix warning about parameter max_new_tokens by @albertvillanova in #1721
Adds Modal Remote Executor by @thomasjpfan in #1722
Fix formatting of title in translation section of documentation by @albertvillanova in #1727
Remove untranslated sections from the documentation by @albertvillanova in #1729
fix: add ipykernel in dockerfile of prebuilt docker executor by @cyyeh in #1731
Fix E2BExecutor by pinning e2b-code-interpreter to < 2 by @albertvillanova in #1733
Fix DockerExecutor connection reset error with server readiness check by @benoriol in #1684
[i18n-KO] Translated building_good_agents.md to Korean by @FacerAin in #1714
🌐 [i18n-KO] Translated installation.md to Korean by @FacerAin in #1647
Support e2b-code-interpreter v2 by @August-murr in #1751
Fix token count initialization when plan_message.token_usage is None by @satwikkansal in #1752
Support user-configurable parameter override for model completion parameters by @albertvillanova in #1678
Fix error for grok-4/grok-3-mini not supporting the stop parameter by @suryabdev in #1766
Replace DockerExecutor Dockerfile with file object by @albertvillanova in #1738
Update documentation to clarify instructions are appended by @chahn in #1709
🌐 [i18n-KO] Translated react.md to Korean by @NSBG in #1666
Pass tools_to_call_from to TransformersModel._prepare_completion_kwargs by @albertvillanova in #1782
🌐 [i18n-KO] Translated models.md to Korean by @Kim-Ju-won in #1776
Fix AttributeError when trying to log a None by @albertvillanova in #1786
fix(agent): remove unused get_variable_names function by @keli-wen in #1784
Fix XPath injection in search_item_ctrl_f by @albertvillanova in #1768
Use context manager for per-operation websocket connection in DockerExecutor by @albertvillanova in #1750

New Contributors

@Xmader made their first contribution in #1662
@shahgahmed made their first contribution in #1685
@aaron-ang made their first contribution in #1601
@pyapyapya made their first contribution in #1644
@Frame17 made their first contribution in #1710
@cyyeh made their first contribution in #1731
@satwikkansal made their first contribution in #1752
@suryabdev made their first contribution in #1766
@Kim-Ju-won made their first contribution in #1776
@keli-wen made their first contribution in #1784

Full Changelog: v1.21.3...v1.22.0

详细ChangeLog

v1.21.3

2025年09月01日

Bug Fixes 🐛

Fix E2BExecutor by pinning e2b-code-interpreter to < 2 by @albertvillanova in #1733

Full Changelog: v1.21.2...v1.21.3

详细ChangeLog

v1.21.2

2025年08月20日

Bug Fixes 🐛

Pin telemetry extra >=0.1.15 to use new TokenUsage structure by @albertvillanova in #1699

Full Changelog: v1.21.1...v1.21.2

详细ChangeLog

v1.21.1

2025年08月11日

Bug Fixes 🐛

Fix error for GPT-5 not supporting the stop parameter by @Xmader in #1662

Full Changelog: v1.21.0...v1.21.1

详细ChangeLog

v1.21.0

2025年08月07日

Enhancements ✨

Tool & Model Improvements
- Add Tool to_code_prompt and to_tool_calling_prompt by @albertvillanova in #1599
- Improve function body extraction in tools by @HairlessVillager in #1627
- Support passing model_kwargs to TransformersModel by @albertvillanova in #1608
- Support dict messages as direct input to models by @albertvillanova in #1570
Executor Improvements
- Enhance LocalPythonExecutor security by blocking dunder calls by @nnfrog in #1551
- Fix continue semantics of LocalPythonExecutorby @adaminsky in #1645
- Fix GeneratorExp in LocalPythonExecutor to return Generator instead of list by @albertvillanova in #1650
Gradio & UI
- Reset agent memory on GradioUI clear button by @albertvillanova in #1611
- Use gr.Number for mapping integer and number type components in launch_gradio_demo by @karenwky in #1320

Bug Fixes 🐛

Fix: Prevent empty additional_args from being added to agent prompt by @jokokojote in #1566
Fix SyntaxError in generated Gradio app due to 'class' attribute by @albertvillanova in #1615
Fix serialization inconsistency in MultiStepAgent.to_dict/from_dict for managed_agents by @hazrmard in #1577
Fix a kwargs error in LocalPythonExecutor by @aymeric-roucher in #1583
Fix structured outputs by @MicrosoftJames in #1642
Fix bug where AmazonBedrockServerModel crashes in thinking mode by @benoriol in #1632
Fix: Remove duplicate line in tool_calling_agent prompt by @yusuf-eren in #1636
Fix: RemotePythonExecutor should not send variables if none exist by @thomasjpfan in #1605
Disable parallel tool calls for final answer by @aymeric-roucher in #1539

Documentation 📚

Improve Installation docs with uv option by @albertvillanova in #1550
Fix and improve MCP server security warnings in docs by @albertvillanova in #1549
DOC: Fix image link for docs (secure_code_execution.md) by @FacerAin in #1582
Update title of page "What are agents" by @aymeric-roucher in #1546
Enable multilingual docs by @albertvillanova in #1633
🌐 [i18n-KO] Translated index.md to Korean by @FacerAin in #1581
🌐 [i18n-KO] Translated text_to_sql.md to Korean by @NSBG in #1603

CI / Dependency Updates 🧪

Pin mcpadapt to support image/audio content by @albertvillanova in #1558
Temporarily skip wrongly implemented tests by @albertvillanova in #1571
CI hotfix: Pin mlx < 0.26.5 by @albertvillanova in #1586
Support mlx-0.26.5 by @albertvillanova in #1589
CI hotfix: Pin transformers < 4.54.0 by @albertvillanova in #1620
Support transformers 4.54.0 by @albertvillanova in #1625
Fix CI PytestUnknownMarkWarning: Unknown pytest.mark.timeout by @albertvillanova in #1630
Fix CI quality: remove trailing whitespace by @albertvillanova in #1617

Deprecations & Cleanups 🧹

Replace deprecated ast.Num and ast.Str with ast.Constant in tool validation by @WilliamRabuel in #1594
Remove deprecated grammar parameter by @albertvillanova in #1651
Remove deprecated token count attributes by @albertvillanova in #1652
Remove deprecated agent logs attribute by @albertvillanova in #1653
Remove mention of deprecated ManagedAgent from docs by @albertvillanova in #1655
Remove deprecated default sse transport by @albertvillanova in #1656
Replace duckduckgo_search with ddgs to address package rename warning by @WilliamRabuel in #1593
Remove unused is_same_item function by @albertvillanova in #1631
Remove unnecessary import by @rahul-1729 in #1639
Simplify _is_package_available by @albertvillanova in #1641

Miscellaneous 🔧

Add support for Amazon Bedrock API Keys by @colesmcintosh in #1612
Factorize create_agent_gradio_app_template function by @albertvillanova in #1616
Fix: Allow passing integers for floats by @aymeric-roucher in #1623
Fix Tool.forward to raise NotImplementedError instead of returning by @HairlessVillager in #1628
Make validate_tool_arguments raise instead of returning error string by @albertvillanova in #1634
Remove mention of python in additional args by @aymeric-roucher in #1584
ToolCallingAgent: remove unnecessary addition to model_output by @aymeric-roucher in #1622
Minor fix in toolCallingAgentPrompt by @rahul-1729 in #1574

Maintenance 🏗️

Bump dev version: v1.21.0.dev0 by @albertvillanova in #1544
Remove empty issue template by @albertvillanova in #1562
Improve issue templates by @albertvillanova in #1563
Add issue template for documentation improvements by @albertvillanova in #1564
Add uv option to CONTRIBUTING by @albertvillanova in #1561

New Contributors

@jokokojote made their first contribution in #1566
@rahul-1729 made their first contribution in #1574
@WilliamRabuel made their first contribution in #1594
@FacerAin made their first contribution in #1582
@thomasjpfan made their first contribution in #1605
@hazrmard made their first contribution in #1577
@HairlessVillager made their first contribution in #1628
@benoriol made their first contribution in #1632
@yusuf-eren made their first contribution in #1636
@nnfrog made their first contribution in #1551
@NSBG made their first contribution in #1603
@karenwky made their first contribution in #1320
@MicrosoftJames made their first contribution in #1642
@adaminsky made their first contribution in #1645

Full Changelog: v1.20.0...v1.21.0

详细ChangeLog

v1.20.0

2025年07月11日

New Features ✨

Remote Execution:
- Implement remote Python WasmExecutor by @albertvillanova in #1261
Callbacks:
- Support callbacks after planning step by @albertvillanova in #1445
- Support multiple callbacks per step type in step_callbacks dict by @albertvillanova in #1517

Enhancements 🛠️

Models:
- Implement rate limiting in all API models by @albertvillanova in #1516
Tools:
- Implement exception mechanism for final answer in remote executors by @tobiasofsn in #1429
- Set default api_key_name in ApiWebSearchTool by @albertvillanova in #1507
- Implement rate limit mechanism in ApiWebSearchTool by @albertvillanova in #1508
- Implement rate limit mechanism in DuckDuckGoSearchTool by @albertvillanova in #1515
- Enable image output for Tool.from_space by @aymeric-roucher in #1510
- Add adapter_kwargs parameter to MCPClient by @LucasDltg in #1528
Validation of Tool Arguments:
- Support multiple types in tool arguments validation by @duguyue100 in #1505
- Fix input type validation when input schema has multiple types by @duguyue100 in #1530
- Fix optional args toolcalling by @aymeric-roucher in #1538
Agent Output Formatting:
- Implement CodeOutput as analog to ToolOutput by @albertvillanova in #1496
- Allow markdown or custom formatting for code blocks by @aymeric-roucher in #1493
Other:
- Add ApiWebSearchTool to all list by @albertvillanova in #1492
- Enforced type annotations in ChatMessage via MessageRole enum by @daavoo in #1479
- Check authorized imports in LocalPythonExecutor constructor by @jank in #265

Bug Fixes 🐛

Fix KeyError when agent reaches max steps with image input by @robin-ede in #1525
Fix when response.usage is None for some OpenRouter models by @sentienthouseplant in #1402
Fix incorrect token counting in streaming TransformersModel by @albertvillanova in #1503
Minor fix nested quotes that prevent execution by @vinoo-ganesh-keru in #1497
Fix ChatMessage attribute access after replacing dict with dataclass by @albertvillanova in #1534
Fix access of content field in ChatMessage by @mdr223 in #1533
Fix parallel final answers handling by @aymeric-roucher in #1482

Documentation Improvements 📚

Examples & Tutorials:
- Add complete Plan Customization example by @albertvillanova in #1506
- Add Async App with Agent example by @albertvillanova in #1509
- Improve Plan Customization example with Human-in-the-Loop by @albertvillanova in #1513
API References:
- Fix docstring of WikipediaSearchTool by @albertvillanova in #1521
- Explain rate_limit in tools docstrings by @albertvillanova in #1519
- Fix Examples in AmazonBedrockServerModel docstring by @albertvillanova in #1522
- Split Built-in Tools from Tools in Reference docs by @albertvillanova in #1520
Other:
- Update Langfuse tracing documentation to SDK v3 by @jannikmaierhoefer in #1447
- Fix use of context manager agent in docs by @albertvillanova in #1502

Maintenance 🏗️

Fix CI LiteLLM test_call_different_providers_without_key by @albertvillanova in #1527
Fix test_send_tools_with_default_wikipedia_search_tool by @albertvillanova in #1494
Fix DockerExecutor tests with final_answer by calling send_tools by @albertvillanova in #1495
Bump dev version: v1.20.0.dev0 by @albertvillanova in #1477

New Contributors

@sentienthouseplant made their first contribution in #1402
@daavoo made their first contribution in #1479
@duguyue100 made their first contribution in #1505
@vinoo-ganesh-keru made their first contribution in #1497
@robin-ede made their first contribution in #1525
@LucasDltg made their first contribution in #1528
@mdr223 made their first contribution in #1533

Full Changelog: v1.19.0...v1.20.0

详细ChangeLog

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#501.How to run open_deep_research？

#60.Question : any plan for model context protocol integration ?

#2172.Add audit trail / governance callback support

#640.Multi Agent code execution failed - InterpreterError: It is not permitted to evaluate other functions than the provided tools or functions defined/imported in previous code

#133.Getting error while installing smolagents depends on torch

#1179.Change MCP tool import to make context manager optional

#251.Initialize Agent with prior conversations

#24.Conversational agent

#429.[BUG] Groq API incompatible with smolagents system messages when using OpenAI endpoint via LiteLLMModel

#414.[BUG] Running with `TransformersModel` does not work

#2697.Golemreach — a persistent MMORPG where your agents are the players

#2681.MC-1 OpenAI-compatible ToolCallingAgent recipe and continuation evidence

#2677.Generation Ship: a live multi-agent worldbuilding benchmark — 170 canon docs by 7+ LLMs, smolagents tool included

#2667.smolagents eval request: can fresh tool-free agents decode and relay this packet?

#2647.AgentBox – a zero-dependency local observability dashboard for smolagents

#2611.Permission to invite a smolagents maintainer to a neutral tool-result failure interview?

#2602.cowork-to-code-bridge — let a sandboxed smolagent run work on your real machine, over a shared directory instead of a socket

#2600.Proof-of-Time provenance example (PR #2597): timestamp receipts via MCP, zero adapter code

#2598.Agent Only MCP + smolagents: reuse verified debugging fixes across runs

#2574.Proposal: Add ACAExecutor for Azure Container Apps Sandboxes

v1.26.0

What's Changed

New Contributors

v1.25.0

What's Changed

New Contributors

v1.24.0

What's Changed

New Contributors

v1.23.0

Improvements ✨

Fixes 🛠️

Documentation 📚

v1.22.0

What's Changed

New Contributors

v1.21.3

Bug Fixes 🐛

v1.21.2

Bug Fixes 🐛

v1.21.1

Bug Fixes 🐛

v1.21.0

Enhancements ✨

Bug Fixes 🐛

Documentation 📚

CI / Dependency Updates 🧪

Deprecations & Cleanups 🧹

Miscellaneous 🔧

Maintenance 🏗️

New Contributors

v1.20.0

New Features ✨

Enhancements 🛠️

Bug Fixes 🐛

Documentation Improvements 📚

Maintenance 🏗️

New Contributors

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