deepset-ai/haystack

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Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.

Stars: 26.6k
Forks: 3.2k
Open beginner issues: 0
Indexed issues: 92
Avg merge: 1d 3h
Merged PRs (30d): 194

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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92 open issues indexed

Use JSX comments for docstrings Open

P2 type:documentation

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

deepset-ai/haystack#11104 · 1 comment · Opened Apr 14, 2026
RFC: Signed receipts for Haystack pipeline component calls Open

P2

Difficulty 5/5 Over a week Newbie friendliness 35/100

deepset-ai/haystack#11039 · 16 comments · Opened Apr 5, 2026
Add parallelization to our converters if there are noticeable performance gains Open

P2

Difficulty 5/5 Over a week Newbie friendliness 25/100

deepset-ai/haystack#10994 · 1 comment · Opened Mar 31, 2026
Updates to the ChatGenerator protocol Open

P2

Difficulty 4/5 3-5 days Newbie friendliness 20/100

deepset-ai/haystack#10992 · Opened Mar 31, 2026
Add New `SemanticResolver` component Open

P2

Difficulty 4/5 3-5 days Newbie friendliness 48/100

deepset-ai/haystack#10985 · 1 comment · Opened Mar 30, 2026
Feature: Post-RAG FactChecker Pipeline Component & Header-Aware Document Splitter Open

P2

Difficulty 5/5 Over a week Newbie friendliness 30/100

deepset-ai/haystack#10973 · 9 comments · Opened Mar 29, 2026
Feature: behavioral drift monitoring hook at context-engineering boundaries Open

P3

Difficulty 5/5 Over a week Newbie friendliness 35/100

deepset-ai/haystack#10971 · 4 comments · Opened Mar 29, 2026
Add parallel component execution to Pipeline using a thread pool executor Open

P2

Difficulty 5/5 Over a week Newbie friendliness 10/100

deepset-ai/haystack#10941 · 2 reactions · Opened Mar 27, 2026
Benchmark Haystack Pipeline Open

P3

Difficulty 5/5 Over a week Newbie friendliness 35/100

deepset-ai/haystack#10894 · 3 comments · Opened Mar 22, 2026
Simple local token tracking for Pipelines Open

P2

Difficulty 5/5 Over a week Newbie friendliness 20/100

deepset-ai/haystack#10889 · 1 comment · Opened Mar 20, 2026
Feature: GuardrailProvider interface for automated tool-call policy enforcement Open

P3

Difficulty 5/5 Over a week Newbie friendliness 38/100

deepset-ai/haystack#10821 · 9 comments · Opened Mar 14, 2026
EU AI Act compliance scan results — Haystack scored #1, wanted to validate findings Open

P2

Difficulty 5/5 Over a week Newbie friendliness 25/100

deepset-ai/haystack#10810 · 15 comments · 2 reactions · Opened Mar 12, 2026
Add references to related LLM framework projects (LangChain and LlamaIndex) Open

P3

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

deepset-ai/haystack#10709 · 1 comment · Opened Mar 2, 2026
Ensure stable, low-effort integrations Open

epic

Difficulty 5/5 Over a week Newbie friendliness 20/100

deepset-ai/haystack#10598 · Opened Feb 16, 2026
Run typing checks on our test files Open

P2

deepset-ai/haystack#10396 · 20 comments · 1 assignee · Opened Jan 16, 2026
Make pipelines less complex Open

epic

Difficulty 5/5 Over a week Newbie friendliness 25/100

deepset-ai/haystack#10495 · Opened Dec 9, 2025
Active Human Involvement in AI Application Open

P2

Difficulty 5/5 Over a week Newbie friendliness 20/100

deepset-ai/haystack#9948 · 2 comments · Opened Oct 27, 2025
Enable/refine reasoning support Open

P2

Difficulty 5/5 Over a week Newbie friendliness 28/100

deepset-ai/haystack#9700 · 2 comments · Opened Aug 11, 2025
Investigate image support with Transformers Open

P3

Difficulty 5/5 Over a week Newbie friendliness 25/100

deepset-ai/haystack#9672 · Opened Jul 31, 2025
Extend image support to more components Open

P2

Difficulty 4/5 3-5 days Newbie friendliness 35/100

deepset-ai/haystack#9669 · Opened Jul 31, 2025
Follow-Up: Schema-Based Serialization Improvements Open

P2

Difficulty 4/5 3-5 days Newbie friendliness 25/100

deepset-ai/haystack#9539 · Opened Jun 20, 2025
Add support for Pipeline breakpointing in `AsyncPipeline` Open

P2

Difficulty 5/5 Over a week Newbie friendliness 25/100

deepset-ai/haystack#9465 · Opened May 30, 2025
Explore adding support for tool calling in `HuggingFaceAPIChatGenerator` when streaming Open

P3

Difficulty 3/5 1-2 days Newbie friendliness 35/100

deepset-ai/haystack#9369 · 4 comments · Opened May 12, 2025
Feature Request: `pipeline.run()` Progress Bar Open

P3

Difficulty 5/5 Over a week Newbie friendliness 35/100

deepset-ai/haystack#9314 · 1 comment · 1 reaction · Opened Apr 25, 2025
Feedback on naming of Tool parameters Open

P2

Difficulty 5/5 Over a week Newbie friendliness 35/100

deepset-ai/haystack#9295 · 2 comments · Opened Apr 23, 2025
More robust `default_from_dict`, `default_to_dict` that handle Secrets, StreamingCallbackT, Tool, Toolset automatically Open

P3

Difficulty 5/5 Over a week Newbie friendliness 42/100

deepset-ai/haystack#9206 · 5 comments · Opened Apr 10, 2025
Update authorization in OpenSeachDocumentStore example Open

P3

Difficulty 4/5 3-5 days Newbie friendliness 25/100

deepset-ai/haystack#9171 · 2 comments · Opened Apr 3, 2025
Allowing full metadata filtering/search functionality for document stores like Qdrant Open

P3

Difficulty 5/5 Over a week Newbie friendliness 25/100

deepset-ai/haystack#9138 · Opened Mar 29, 2025
Enable grouping of pipelines via Sub-pipelines Open

P2

Difficulty 5/5 Over a week Newbie friendliness 25/100

deepset-ai/haystack#9091 · 2 comments · Opened Mar 21, 2025
Support ReST-style docstrings when loading tools from function Open

P3

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

deepset-ai/haystack#9023 · 5 comments · Opened Mar 12, 2025
ENV variable to disable progress bar is not working Open

P3

Difficulty 3/5 1-2 days Newbie friendliness 45/100

deepset-ai/haystack#8782 · 3 comments · Opened Jan 28, 2025
Batched inferencing using HuggingfaceLocalGenerator Open

P3

Difficulty 4/5 3-5 days Newbie friendliness 42/100

deepset-ai/haystack#8770 · 5 comments · Opened Jan 24, 2025
Components expecting `List[...]` input should use `Iterable[...]` instead Open

P3

Difficulty 4/5 3-5 days Newbie friendliness 52/100

deepset-ai/haystack#8494 · 2 comments · Opened Oct 26, 2024
OpenAI's Batch API Support Open

P3

deepset-ai/haystack#8482 · 3 reactions · 1 assignee · Opened Oct 22, 2024
Update Document.__eq__ to intelligently compare floats Open

P3

deepset-ai/haystack#8412 · 5 comments · 1 reaction · 1 assignee · Opened Sep 26, 2024
OpenAIGenerator uses chat_completions endpoint. Error with model that has no chat_template in config Open

P2

deepset-ai/haystack#8275 · 6 comments · 1 assignee · Opened Aug 23, 2024
PromptBuilder yields huggingface_hub.errors.ValidationError: Input validation error: `inputs` must have less than 4095 tokens. Given: 4701 Open

P3

Difficulty 4/5 3-5 days Newbie friendliness 30/100

deepset-ai/haystack#8188 · 4 comments · Opened Aug 9, 2024
Azure / OpenAI rate limit headers Open

P3

Difficulty 3/5 1-2 days Newbie friendliness 55/100

deepset-ai/haystack#8164 · 4 comments · Opened Aug 5, 2024
Handle errors separately in evaluators and the run results Open

shaping topic:eval

Difficulty 4/5 3-5 days Newbie friendliness 52/100

deepset-ai/haystack#7973 · 3 comments · Opened Jul 3, 2024
Support gRPC interface of TEI Open

P2

Difficulty 4/5 3-5 days Newbie friendliness 38/100

deepset-ai/haystack#7522 · 3 comments · 2 reactions · Opened Apr 9, 2024
Provide relevant schema of pipeline serialization Open

P3

Difficulty 5/5 Over a week Newbie friendliness 42/100

deepset-ai/haystack#7443 · 2 comments · Opened Mar 30, 2024
Streamlit Stream Callback in Haystack 2.x Open

P2 topic:streaming

deepset-ai/haystack#6970 · 7 comments · 1 assignee · Opened Feb 11, 2024

deepset-ai/haystack

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