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Stainless
Stainless
Stainless is an API developer experience platform that generates best-in-class SDKs, interactive documentation, production-ready CLI tools, MCP servers, and Terraform providers directly from an OpenAPI specification. Trusted by Anthropic, Cloudflare, Google, and OpenAI, Stainless automates the boilerplate of client library development including HTTP requests, retries with exponential backoff, streaming, and pagination. The platform supports TypeScript, Python, Go, Java, Kotlin, Ruby, C#, PHP, and Terraform, with Rust and Swift in development.
Stainless publishes 5 APIs on the APIs.io network, including Build Target Outputs API, Builds API, Orgs API, and 2 more. Tagged areas include Code Generation, Documentation, Developer Experience, MCP, and Platform.
The Stainless catalog on APIs.io includes 1 JSON-LD context.
Stainless’ developer surface includes authentication, developer portal, documentation, pricing, engineering blog, changelog, and 9 more developer resources.
10 APIs
Code Generation Documentation Developer Experience MCP Platform SDKs Terraform
On this page
Kin Score
APIs 10
Open Collections 1
Pricing Plans 1
Rate Limits 1
FinOps 1
Vocabularies 1
Examples 1
Security Posture 3
Agentic Access 1
Resources 15
apis.yml
53 Operational Transparency
Composite quality — 49.3/100 · developing
Contract Quality
15.1 / 25
Developer Ergonomics
6.1 / 20
Commercial Clarity
14.7 / 20
Operational Transparency
6.8 / 13
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
Individual APIs this provider publishes, each with its own machine-readable definition.
Scroll for all 10
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Published pricing tiers and plan structures.
Documented rate limits and quota policies.
Cost, billing, and metering signals for API financial operations.
JSON-LD contexts and semantic vocabularies used across these APIs.
Example request and response payloads for these APIs.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Recommended x-agentic-access execution contracts for AI agents.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
Source (apis.yml)
aid: stainless
url: https://raw.githubusercontent.com/api-evangelist/stainless/refs/heads/main/apis.yml
name: Stainless
description: Stainless is an API developer experience platform that generates best-in-class SDKs, interactive documentation,
production-ready CLI tools, MCP servers, and Terraform providers directly from an OpenAPI specification. Trusted by Anthropic,
Cloudflare, Google, and OpenAI, Stainless automates the boilerplate of client library development including HTTP requests,
retries with exponential backoff, streaming, and pagination. The platform supports TypeScript, Python, Go, Java, Kotlin,
Ruby, C#, PHP, and Terraform, with Rust and Swift in development.
tags:
- Code Generation
- Documentation
- Developer Experience
- MCP
- Platform
- SDKs
- Terraform
type: Index
accessModel:
pricing: freemium
onboarding: self-serve
trial: false
try_now: true
public: false
label: Freemium · 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/stainless.png
access: 3rd-Party
created: '2025-01-08'
modified: '2026-05-02'
position: Consumer
segments:
- SDKs
- Developer Tooling
common:
- type: AgenticAccess
url: agentic-access/stainless-agentic-access.yml
- type: VulnerabilityDisclosure
url: security/stainless-vulnerability-disclosure.yml
- type: DomainSecurity
url: security/stainless-domain-security.yml
- type: Authentication
url: authentication/stainless-authentication.yml
- type: LinkedIn
url: https://www.linkedin.com/company/stainless-api
- url: https://www.stainless.com/
type: Portal
- url: https://www.stainless.com/docs/
type: Documentation
- url: https://www.stainless.com/pricing
type: Pricing
- url: https://www.stainless.com/blog
type: Blog
- url: https://www.stainless.com/changelog
type: ChangeLog
- url: https://app.stainless.com/login
type: Login
- url: https://www.stainless.com/company
type: About
- url: https://github.com/stainless-api
type: GitHubOrganization
- url: https://www.stainless.com/legal/terms-conditions
type: TermsOfService
- url: https://www.stainless.com/customers
type: Customers
apis:
- aid: stainless:stainless
name: Stainless SDK Generator
tags:
- Code Generation
- Developer Experience
- SDKs
humanURL: https://www.stainless.com/
description: Generate production-ready SDKs in TypeScript, Python, Go, Java, Kotlin, Ruby, C#, PHP, and Terraform from an
OpenAPI specification. Stainless handles HTTP requests, retries with exponential backoff, streaming, pagination, and idiomatic
patterns for each language. Trusted by Anthropic, Cloudflare, Google, and OpenAI.
properties:
- url: https://www.stainless.com/
type: Documentation
- url: https://www.stainless.com/docs/
type: GettingStarted
- url: https://www.stainless.com/pricing
type: Pricing
- url: https://www.stainless.com/customers
type: Customers
- url: https://github.com/stainless-api/upload-openapi-spec-action
type: GitHubAction
- url: https://github.com/stainless-api/build-sdk-action
type: GitHubAction
- aid: stainless:stainless-docs-platform
name: Stainless Docs Platform
tags:
- API Reference
- Developer Experience
- Documentation
humanURL: https://www.stainless.com/products/docs
description: The Stainless Docs Platform combines your API reference, usage examples, and narrative guides into a single,
cohesive experience that evolves with your API. Go from an OpenAPI spec to a live, interactive documentation site in minutes
with a developer-centric docs-as-code workflow built on Astro. Deploys to Cloudflare or custom clouds.
properties:
- url: https://www.stainless.com/products/docs
type: Documentation
- url: https://www.stainless.com/docs/docs-platform/
type: GettingStarted
- aid: stainless:stainless-mcp-servers
name: Stainless MCP Servers
tags:
- AI Agents
- Code Generation
- MCP
humanURL: https://www.stainless.com/products/mcp
description: Stainless generates production-ready MCP (Model Context Protocol) servers optimized for agentic coding and
context limits directly from an OpenAPI spec. Production-grade capabilities including OAuth, SSE, and remote servers are
included by default. Generated MCP servers use a code tool architecture enabling seamless integration with Claude Desktop,
Cursor, and other MCP clients.
properties:
- url: https://www.stainless.com/products/mcp
type: Documentation
- url: https://www.stainless.com/docs/targets/mcp/
type: GettingStarted
- url: https://www.stainless.com/mcp
type: Portal
- aid: stainless:stainless-cli
name: Stainless CLI
tags:
- CLI
- Code Generation
- Developer Tools
humanURL: https://www.stainless.com/docs/
description: The Stainless CLI generates production-ready command-line interfaces from an OpenAPI specification. Generated
CLIs provide a consistent, typed interface for interacting with any API from the terminal.
properties:
- url: https://www.stainless.com/docs/
type: Documentation
- aid: stainless:stainless-terraform
name: Stainless Terraform Providers
tags:
- Code Generation
- Infrastructure as Code
- Terraform
humanURL: https://www.stainless.com/docs/
description: Stainless generates production-ready Terraform providers from an OpenAPI specification, enabling infrastructure-as-code
access to any REST API without manual Terraform provider development.
properties:
- url: https://www.stainless.com/docs/
type: Documentation
- aid: stainless:stainless-build-target-outputs-api
name: Stainless Build Target Outputs API
description: The Build Target Outputs API from Stainless — 1 operation(s) for build target outputs.
humanURL: https://www.stainless.com/
tags:
- Build Target Outputs
properties:
- type: OpenAPI
url: openapi/stainless-build-target-outputs-api-openapi.yml
- aid: stainless:stainless-builds-api
name: Stainless Builds API
description: The Builds API from Stainless — 4 operation(s) for builds.
humanURL: https://www.stainless.com/
tags:
- Builds
properties:
- type: OpenAPI
url: openapi/stainless-builds-api-openapi.yml
- aid: stainless:stainless-orgs-api
name: Stainless Orgs API
description: The Orgs API from Stainless — 2 operation(s) for orgs.
humanURL: https://www.stainless.com/
tags:
- Orgs
properties:
- type: OpenAPI
url: openapi/stainless-orgs-api-openapi.yml
- aid: stainless:stainless-projects-api
name: Stainless Projects API
description: The Projects API from Stainless — 9 operation(s) for projects.
humanURL: https://www.stainless.com/
tags:
- Projects
properties:
- type: OpenAPI
url: openapi/stainless-projects-api-openapi.yml
- aid: stainless:stainless-user-api
name: Stainless User API
description: The User API from Stainless — 1 operation(s) for user.
humanURL: https://www.stainless.com/
tags:
- User
properties:
- type: OpenAPI
url: openapi/stainless-user-api-openapi.yml
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
specificationVersion: '0.19'