# Stainless

**Canonical:** https://apis.io/providers/stainless-api/  
**Website:** https://www.stainless.com  
**APIs profiled:** 6

Stainless is a New York-based developer-tools company that turns an OpenAPI specification into a portfolio of high-quality, idiomatic SDKs, reference documentation, MCP servers, CLIs, and Terraform providers. The platform was founded by veterans of Stripe, Heroku, and Twilio with the explicit goal of bringing Stripe-quality developer experience to any API, and is used by AI-platform and infrastructure companies including OpenAI, Anthropic, Google DeepMind, Cloudflare, Modern Treasury, Perplexity, Replicate, LangChain, Beeper, and Runway. Stainless supports nine target languages today (TypeScript, Python, Go, Java, Kotlin, Ruby, PHP, C#, plus a CLI) and publishes generated code under the Apache 2.0 license into customer-owned GitHub repositories. The company exposes its own platform as a REST API at api.stainless.com (v0), with endpoints for managing organizations, projects, branches, builds, and the current user, plus a build-compare endpoint and matching client libraries. Stainless also ships the Stainless Studio (web-based config UI), the Stainless CLI, a Language Server, GitHub member sync, breaking-change detection, SSO, audit logs, and integrations with documentation hosts (Bump.sh, GitBook, Mintlify, ReadMe).

## Kin Score — 23.5 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: falling (-9.0 from 32.5).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 11.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Free · Self-serve signup — onboarding: self-serve, pricing: free, trial: no (confidence: high).

## APIs (6)

- **Stainless Platform API** — The Stainless Platform API is a REST API for programmatically managing Stainless projects, branches, and SDK builds. It exposes the same primitives that power the Stainless Stud...
- **Stainless Build Target Outputs API** — The Build Target Outputs API from Stainless — 1 operation(s) for build target outputs.
- **Stainless Builds API** — The Builds API from Stainless — 4 operation(s) for builds.
- **Stainless Orgs API** — The Orgs API from Stainless — 2 operation(s) for orgs.
- **Stainless Projects API** — The Projects API from Stainless — 9 operation(s) for projects.
- **Stainless User API** — The User API from Stainless — 1 operation(s) for user.

## Agentic access (1)

- **Stainless Api Agentic Access** — 22 operations · 10 acting · 1 human-in-the-loop

## Security (3)

- **Stainless Api Authentication** — http · 1 scheme
- **Stainless Api Domain Security** — TLSv1.3 · DMARC
- **Stainless Api Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Stainless Api Plans Pricing**

## Tags

SDK Generation, OpenAPI, API Tooling, Developer Experience, MCP, Documentation, Code Generation, Terraform Provider, API Reference, DevTools, API-First

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/stainless-api/). Scores are computed from the provider's own public artifacts under a published rubric.