Langbase

Langbase is a serverless AI developer platform for building, deploying, and scaling AI agents and applications. Its composable primitives - Pipes (agents), Memory (managed RAG), Threads, Agent (one API over 100+ LLMs), Tools, Parser, Chunker, and Embed - are exposed through a single Bearer-authenticated REST API at api.langbase.com, with Server-Sent Events (SSE) streaming for generative endpoints.

Langbase publishes 8 APIs on the APIs.io network, including Agent API, Chunker API, Embed API, and 5 more. Tagged areas include Artificial Intelligence, Agents, RAG, LLM, and Serverless.

Langbase’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.7/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Artificial Intelligence Agents RAG LLM Serverless

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 37.7/100 · thin

Contract Quality 11.7 / 23

Developer Ergonomics 5.6 / 18

Access Clarity 7.1 / 18

Operational Transparency 4.0 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/langbase: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 8

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

Langbase Agent API

The Agent API from Langbase — 1 operation(s) for agent.

Langbase Chunker API

The Chunker API from Langbase — 1 operation(s) for chunker.

Langbase Embed API

The Embed API from Langbase — 1 operation(s) for embed.

Langbase Memory API

The Memory API from Langbase — 5 operation(s) for memory.

Langbase Parser API

The Parser API from Langbase — 1 operation(s) for parser.

Langbase Pipes API

The Pipes API from Langbase — 3 operation(s) for pipes.

Langbase Threads API

The Threads API from Langbase — 3 operation(s) for threads.

Langbase Tools API

The Tools API from Langbase — 2 operation(s) for tools.

Scroll for all 8

Open Collections 10

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

API Collection

OPEN COLLECTION

Langbase Agent API

OPEN COLLECTION

Langbase Agent Chunker API

OPEN COLLECTION

Langbase Agent Embed API

OPEN COLLECTION

Langbase Agent Memory API

OPEN COLLECTION

Langbase Agent Parser API

OPEN COLLECTION

Langbase Agent Pipes API

OPEN COLLECTION

Langbase Agent Threads API

OPEN COLLECTION

Langbase Agent Tools API

OPEN COLLECTION

Langbase API

OPEN COLLECTION

Scroll for all 10

Pricing Plans 1

Published pricing tiers and plan structures.

Langbase Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Langbase Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

Langbase Finops

FINOPS

Security Posture 3

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

Langbase Authentication

http · 1 scheme

SECURITY

Langbase Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Langbase Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

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

Langbase Agentic Access

23 operations · 18 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 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

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 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: langbase
url: https://raw.githubusercontent.com/api-evangelist/langbase/refs/heads/main/apis.yml
name: Langbase
kind: company
description: Langbase is a serverless AI developer platform for building, deploying, and scaling AI agents and applications.
  Its composable primitives - Pipes (agents), Memory (managed RAG), Threads, Agent (one API over 100+ LLMs), Tools, Parser,
  Chunker, and Embed - are exposed through a single Bearer-authenticated REST API at api.langbase.com, with Server-Sent Events
  (SSE) streaming for generative endpoints.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/langbase.png
tags:
- Artificial Intelligence
- Agents
- RAG
- LLM
- Serverless
tags_raw:
- AI
- Agents
- RAG
- LLM
- Serverless
created: '2026-07-01'
modified: '2026-07-01'
specificationVersion: '0.23'
apis:
- aid: langbase:langbase-agent-api
  name: Langbase Agent API
  description: The Agent API from Langbase — 1 operation(s) for agent.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Agents
  tags_raw:
  - Agent
  properties:
  - type: OpenAPI
    url: openapi/langbase-agent-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
- aid: langbase:langbase-chunker-api
  name: Langbase Chunker API
  description: The Chunker API from Langbase — 1 operation(s) for chunker.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Chunker
  properties:
  - type: OpenAPI
    url: openapi/langbase-chunker-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
- aid: langbase:langbase-embed-api
  name: Langbase Embed API
  description: The Embed API from Langbase — 1 operation(s) for embed.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Embed
  properties:
  - type: OpenAPI
    url: openapi/langbase-embed-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
- aid: langbase:langbase-memory-api
  name: Langbase Memory API
  description: The Memory API from Langbase — 5 operation(s) for memory.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Memory
  properties:
  - type: OpenAPI
    url: openapi/langbase-memory-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
- aid: langbase:langbase-parser-api
  name: Langbase Parser API
  description: The Parser API from Langbase — 1 operation(s) for parser.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Parser
  properties:
  - type: OpenAPI
    url: openapi/langbase-parser-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
- aid: langbase:langbase-pipes-api
  name: Langbase Pipes API
  description: The Pipes API from Langbase — 3 operation(s) for pipes.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Pipes
  properties:
  - type: OpenAPI
    url: openapi/langbase-pipes-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
- aid: langbase:langbase-threads-api
  name: Langbase Threads API
  description: The Threads API from Langbase — 3 operation(s) for threads.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Threads
  properties:
  - type: OpenAPI
    url: openapi/langbase-threads-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
- aid: langbase:langbase-tools-api
  name: Langbase Tools API
  description: The Tools API from Langbase — 2 operation(s) for tools.
  humanURL: https://langbase.com/docs/api-reference/pipe
  baseURL: https://api.langbase.com/v1
  tags:
  - Tools
  properties:
  - type: OpenAPI
    url: openapi/langbase-tools-api-openapi.yml
  - type: Documentation
    url: https://langbase.com/docs/pipe
  - type: APIReference
    url: https://langbase.com/docs/api-reference/pipe
  - type: Documentation
    url: https://langbase.com/docs/agent
  - type: APIReference
    url: https://langbase.com/docs/api-reference/agent
  - type: Documentation
    url: https://langbase.com/docs/memory
  - type: APIReference
    url: https://langbase.com/docs/api-reference/memory
  - type: Documentation
    url: https://langbase.com/docs/threads
  - type: APIReference
    url: https://langbase.com/docs/api-reference/threads
  - type: Documentation
    url: https://langbase.com/docs/tools
  - type: APIReference
    url: https://langbase.com/docs/api-reference/tools
  - type: Documentation
    url: https://langbase.com/docs/parser
  - type: APIReference
    url: https://langbase.com/docs/api-reference/parser
  - type: Documentation
    url: https://langbase.com/docs/chunker
  - type: APIReference
    url: https://langbase.com/docs/api-reference/chunker
  - type: Documentation
    url: https://langbase.com/docs/embed
  - type: APIReference
    url: https://langbase.com/docs/api-reference/embed
  - type: Documentation
    url: https://langbase.com/docs/workflows
common:
- type: AgenticAccess
  url: agentic-access/langbase-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/langbase-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/langbase-domain-security.yml
- type: Authentication
  url: authentication/langbase-authentication.yml
- type: GitHubOrganization
  url: https://github.com/LangbaseInc
- type: LinkedIn
  url: https://www.linkedin.com/company/langbase
- type: Website
  url: https://langbase.com/
- type: Documentation
  url: https://langbase.com/docs
- type: Plans
  url: plans/langbase-plans-pricing.yml
- type: RateLimits
  url: rate-limits/langbase-rate-limits.yml
- type: FinOps
  url: finops/langbase-finops.yml
- url: https://langbase.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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