Haystack website screenshot

Haystack

Haystack is an open-source framework for building production-ready LLM applications and retrieval-augmented generation pipelines.

Haystack publishes 1 API on the APIs.io network. Tagged areas include AI Automation and LLM Framework.

Haystack’s developer surface includes documentation, engineering blog, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub
29.7/100 thin ▲ 9.3 Agent 19/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
1 APIs
AI AutomationLLM Framework

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 29.7/100 · thin
Contract Quality 10.8 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 4.1 / 10
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/haystack: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Haystack

Haystack is an open-source framework for building production-ready LLM applications and retrieval-augmented generation pipelines.

GraphQL 1

GraphQL schemas published by this provider.

Haystack GraphQL API

Haystack is an open-source NLP framework. The Deepset Cloud API covers pipeline management, document store operations, querying, user management, evaluation sets, and deployment...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Haystack Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Haystack Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Haystack Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Haystack Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: haystack
name: Haystack
description: Haystack is an open-source framework for building production-ready LLM applications and retrieval-augmented generation
  pipelines.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/haystack.png
tags:
- AI Automation
- LLM Framework
url: https://raw.githubusercontent.com/api-evangelist/haystack/refs/heads/main/apis.yml
created: '2026-03-27'
modified: '2026-03-27'
specificationVersion: '0.19'
apis:
- aid: haystack:haystack
  name: Haystack
  description: Haystack is an open-source framework for building production-ready LLM applications and retrieval-augmented
    generation pipelines.
  humanURL: https://haystack.deepset.ai
  tags:
  - AI Automation
  properties:
  - type: Documentation
    url: https://docs.haystack.deepset.ai
  - url: graphql/haystack-graphql.md
    type: GraphQL
common:
- type: DomainSecurity
  url: security/haystack-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/deepset-ai
- type: LinkedIn
  url: https://www.linkedin.com/company/deepset-ai
- type: Website
  url: https://haystack.deepset.ai
- type: Documentation
  url: https://docs.haystack.deepset.ai
- type: LlmsText
  url: https://docs.haystack.deepset.ai/llms.txt
- url: https://haystack.deepset.ai/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com