Define once. Ship five faces.

One definition generates the documentation, the REST surface, the SDK, the MCP tools, and the CLI — plus the rate card that meters them. apis.dev is where you build that definition and publish it.

Open the dashboard curl apis.dev/llms.txt

Keyless. No account. The sandbox floor answers anonymously.

14operations

5nouns

2transports

4rate rows

0keys required

Schema in, faces out

// @dotdo/api — the estate's convention-driven generator
import { defineResource } from '@dotdo/api'

const Customer = defineResource('Customer')
  .fields({
    name:  { type: 'string', required: true },
    email: { type: 'string', format: 'email' },
  })
  .relations({ orders: { type: 'hasMany', resource: 'Order' } })
  .build()

Docs/llms.txt · /openapi.json

REST/apis — typed OK · EMPTY · BLOCKED · OFFER

SDKtyped client from the definition

MCPPOST /mcp — tools = contract operationIds

CLIcommands from the definition

Rate card/pricing — operation-keyed rates[]

The generator is @dotdo/api, the estate's own convention-driven builder: a resource definition in; REST with HATEOAS, an OpenAPI contract, a typed SDK, CLI commands, and MCP tools out. This origin practices the same mechanism — its whole machine face is generated from one manifest by the vendored axp-faces generator.

What serves today

Face	Mechanism	Address	Status
Docs	llms.txt front door + OpenAPI 3.1 contract	/llms.txt · /openapi.json	serving
REST	typed registry + keyless sandbox workspaces	/apis · POST /workspaces	serving
MCP	5 tools; tool names are the contract's operationIds	POST /mcp	serving
Rate card	operation-keyed rates[]; 402 OFFER boundary	/pricing · /offer	serving · test-mode
SDK	typed client generated from the definition	via @dotdo/api	roadmap
CLI	commands generated from the definition	via @dotdo/api	roadmap

API and probe-report records are real, provenance-stamped. Action records are labeled example data. Settlement is a labeled test-mode stub — the 402 boundary is served, nothing is charged.

Built on apis.dev

BrandWhat it sells

auto.dev vehicle data & VIN decode apis.vin vehicle APIs api.lawyer legal work as an API api.insure insurance as an API apis.mortgage mortgage as an API barcoding.dev barcodes & identifiers

52 of the register's 53 categories generated on this platform; every build gates at the pinned conformance spec (apis-ax-axp@2.6.0) before deploy — the generator emits the five faces conformant by construction, so a property scoring imperfectly is an apis.dev product gap, not the property's. Continuous verification is api.qa's product, not this page's: attested, replayable, and run by an estate sibling whose independence is procedural — pinned spec, evidence anyone can replay — not corporate.

Pricing

metered · $0.0002/call · first 1,000 calls free · $100 hard ceiling · test-mode: nothing is charged today — full rate card

apis.dev is the build-and-monetize door of the apis.do provider abstraction; api.management is its sibling for manage-and-operate. What you register here is served the way this page is served — one definition, every face generated from it, and an independent verifier, api.qa, grading the result in public.