Klu website screenshot

Klu

Klu (klu.ai) is an LLM app platform for designing, deploying, evaluating, and observing prompt-driven AI applications. The Klu Engine exposes a REST API at https://api.klu.ai/v1 (Bearer API key) where an Action encapsulates a prompt template, model config, context (RAG), and output parsing, and is invoked to generate completions, with data, feedback, sessions, and models managed alongside it. NOTE - product development appears dormant - the official klu SDK last shipped in March 2025 and the founding team's recent open-source work has shifted toward xAI / Grok tooling - see review.yml for the honest status assessment.

Klu publishes 8 APIs on the APIs.io network, including Actions API, Apps API, Context API, and 5 more. Tagged areas include AI, LLM, LLM App Platform, Prompt Engineering, and Evaluation.

Klu’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
39.3/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessPaidSelf serve
8 APIs
AILLMLLM App PlatformPrompt EngineeringEvaluationObservability

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 39.3/100 · thin
Contract Quality 15.3 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 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/klu-ai: 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 8

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

Klu Actions API

Run Actions to generate completions.

Klu Apps API

Apps (projects) grouping Actions, context, and experiments.

Klu Context API

Manage Context libraries and documents for retrieval-augmented generation.

Klu Data API

Data points produced by Action generations.

Klu Feedback API

Ratings, corrections, and issues attached to data points.

Klu Models API

LLM providers and models available in the workspace.

Klu Sessions API

Session memory for multi-turn conversations.

Klu Workspaces API

Workspace administration.

Scroll for all 8

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Klu API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Klu Ai Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Klu Ai Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Klu Ai Finops

FINOPS

Security Posture 2

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

Klu Ai Authentication

http · 1 scheme

SECURITY

Klu Ai Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Klu Ai Agentic Access

14 operations · 7 acting

14 operations · 7 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: klu-ai
url: https://raw.githubusercontent.com/api-evangelist/klu-ai/refs/heads/main/apis.yml
name: Klu
kind: company
description: Klu (klu.ai) is an LLM app platform for designing, deploying, evaluating, and observing prompt-driven AI applications.
  The Klu Engine exposes a REST API at https://api.klu.ai/v1 (Bearer API key) where an Action encapsulates a prompt template,
  model config, context (RAG), and output parsing, and is invoked to generate completions, with data, feedback, sessions,
  and models managed alongside it. NOTE - product development appears dormant - the official klu SDK last shipped in March
  2025 and the founding team's recent open-source work has shifted toward xAI / Grok tooling - see review.yml for the honest
  status assessment.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/klu-ai.png
tags:
- AI
- LLM
- LLM App Platform
- Prompt Engineering
- Evaluation
- Observability
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: klu-ai:klu-ai-actions-api
  name: Klu Actions API
  description: Run Actions to generate completions.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Actions
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-actions-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
- aid: klu-ai:klu-ai-apps-api
  name: Klu Apps API
  description: Apps (projects) grouping Actions, context, and experiments.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Apps
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-apps-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
- aid: klu-ai:klu-ai-context-api
  name: Klu Context API
  description: Manage Context libraries and documents for retrieval-augmented generation.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Context
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-context-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
- aid: klu-ai:klu-ai-data-api
  name: Klu Data API
  description: Data points produced by Action generations.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Data
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-data-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
- aid: klu-ai:klu-ai-feedback-api
  name: Klu Feedback API
  description: Ratings, corrections, and issues attached to data points.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-feedback-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
- aid: klu-ai:klu-ai-models-api
  name: Klu Models API
  description: LLM providers and models available in the workspace.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-models-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
- aid: klu-ai:klu-ai-sessions-api
  name: Klu Sessions API
  description: Session memory for multi-turn conversations.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-sessions-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
- aid: klu-ai:klu-ai-workspaces-api
  name: Klu Workspaces API
  description: Workspace administration.
  humanURL: https://docs.klu.ai/resources/api-actions
  baseURL: https://api.klu.ai/v1
  tags:
  - Workspaces
  properties:
  - type: OpenAPI
    url: openapi/klu-ai-workspaces-api-openapi.yml
  - type: Documentation
    url: https://docs.klu.ai/resources/api-actions
  - type: APIReference
    url: https://docs.klu.ai/resources/api-basics
  - type: PostmanCollection
    url: collections/klu-ai.postman_collection.json
  - type: OpenCollection
    url: collections/klu-ai.opencollection.json
  - type: Documentation
    url: https://docs.klu.ai/guides/data
  - type: APIReference
    url: https://docs.klu.ai/resources/api-context
  - type: Documentation
    url: https://docs.klu.ai/resources/api-basics
common:
- type: AgenticAccess
  url: agentic-access/klu-ai-agentic-access.yml
- type: DomainSecurity
  url: security/klu-ai-domain-security.yml
- type: Authentication
  url: authentication/klu-ai-authentication.yml
- type: GitHubOrganization
  url: https://github.com/klu-ai
- type: LinkedIn
  url: https://www.linkedin.com/company/klu-ai
- type: Website
  url: https://klu.ai
- type: Documentation
  url: https://docs.klu.ai
- type: Plans
  url: plans/klu-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/klu-ai-rate-limits.yml
- type: FinOps
  url: finops/klu-ai-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com