APIMatic
APIMatic is a developer experience platform for APIs that specializes in automated SDK generation, API documentation portal creation, specification validation and linting, and API format transformation. It supports 15+ API specification formats and generates idiomatic SDKs in 7+ programming languages with CI/CD integration for automating the developer experience suite.
APIMatic publishes 5 APIs on the APIs.io network, including Portals API, SDK Generation API, Transformation API, and 2 more. Tagged areas include API Transformation, Code Generation, Developer Experience, Developer Tools, and Documentation.
The APIMatic catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
APIMatic’s developer surface includes authentication, documentation, getting-started guide, pricing, engineering blog, signup flow, changelog, and 50 more developer resources.
Kin Score
What adopting APIMatic moves on the Kin Score 24
APIMatic is an area vendor: providers adopt it to run part of their developer surface. This is the Kin Score checks its features can move for a provider that adopts it, what each one really earns, and what it earns nothing for.
APIMatic’s surest lift is Developer Ergonomics: SDKs in seven languages and a portal with an API reference, guides, a playground and a changelog. Each of those counts only once the provider declares it in its apis.yml. It can also reach Contract Quality, which a docs-only vendor cannot, but only where the API Transformer converts a WSDL, RAML or Postman description into the first published OpenAPI, or where the provider acts on what the linter flags. The linter reports gaps and does not fill them. The embedded portal widget serves a client-side shell with no content in its HTML (re-checked on a Verizon ThingSpace page on 2026-09-25). APIMatic output rarely carries an APIMatic fingerprint on the customer’s own surface, so its customer base cannot be measured.
| Check | Earns | Through |
|---|---|---|
| Machine-Readable Contractsaturated Agent ReadinessSame as contract_present. The converted OpenAPI has to be published by the provider. |
18.0 of 18 | API Transformer |
| MCP Serverdocumented Agent ReadinessThe default output is an npm package run over stdio, which no probe can reach, so it is graded as documented (0.4). The tools are generated per operation from the provider’s own OpenAPI, so the tool shape is not shared across customers and should not cluste… |
4.8 of 12 | MCP server generation (alpha) |
| Request/Response Examplespartial Agent ReadinessThe check reads request and response examples in the OpenAPI first. SDK code samples in the portal reach only the Examples / Code Samples link fallback (0.25), and only once that link is declared. |
1.8 of 7 | SDK generation in seven languages |
| Publishes a machine-readable contractsaturated Contract QualityOnly for a provider holding a non-OpenAPI description (WSDL, RAML, API Blueprint, Postman) and no published OpenAPI. The Transformer converts a description; it cannot describe an API that has none. The provider has to publish the output. |
20.0 of 20 | API Transformer |
| Change log Operational TransparencyMaintain the changelog and declare it as a ChangeLog entry. |
6.0 of 6 | Portal changelog integration |
| Operations have summariessaturated Contract QualityThe linter flags missing summaries. The provider has to write them and republish the contract. |
6.0 of 6 | Validation and linting (1000+ rules) |
| Authentication documentedsaturated Developer Ergonomics94% of providers with a contract, docs and a reference already earn this; the vendor cannot move it for most of its buyers. |
5.0 of 5 | API developer portal |
| Getting started guide Developer ErgonomicsAuthor a recipe or quickstart and declare it as a GettingStarted entry. |
5.0 of 5 | API Recipes |
| Three or more SDKs Developer ErgonomicsPublish three or more language SDKs and declare each one as its own SDK entry. |
4.0 of 4 | SDK generation in seven languages |
| Developer portal Developer ErgonomicsThe embedded widget mode serves a client-side-rendered shell. On 2026-09-25 a ThingSpace page returned HTTP 200 and 85 KB of HTML with an APIMaticDevPortal widget and only site navigation as text. The pointer still scores, but any probe or agent that reads … |
4.0 of 4 | API developer portal |
| Documentationsaturated Developer Ergonomics95% of providers with a contract, docs and a reference already earn this; the vendor cannot move it for most of its buyers. |
4.0 of 4 | API developer portal |
| Publishes llms.txt DiscoverabilityGenerated from the provider’s own portal content and served on the provider’s domain, which format rule 2 credits in full. On a vendor host it would be derived (0.25). |
4.0 of 4 | Portal llms.txt, llms-full.txt and per-page Markdown |
| Unique operationIdssaturated Contract QualityOnly if the auto-fix covers operationId rules. The source does not list which rules it fixes, and the fixed contract still has to be republished. |
4.0 of 4 | VS Code auto-fix for rule violations |
| At least one SDK Developer ErgonomicsPublish at least one generated SDK to a public registry or repository and declare it as a common[] entry of type SDK in apis.yml. |
3.0 of 3 | SDK generation in seven languages |
| API referencesaturated Developer Ergonomics94% of providers with a contract, docs and a reference already earn this; the vendor cannot move it for most of its buyers. |
3.0 of 3 | API developer portal |
| Console or sandbox Developer ErgonomicsDeclare the playground as a Console or Playground entry. |
3.0 of 3 | Live API playground |
| Postman collectiondiscounted Developer ErgonomicsA Postman collection converted from the OpenAPI is generated, not authored, so it is the derived class. |
0.5 of 2 | API Transformer |
| Operations have descriptionsconditional Contract QualityThe linter flags missing descriptions and does not write them. The provider has to author them. |
6.0 of 6 | Validation and linting (1000+ rules) |
| OpenAPI 3.1conditional Contract QualityOnly when the provider publishes the Transformer’s 3.1 output as its contract. The Transformer lists no 3.2 output, so openapi_3_2 is out of reach. |
5.0 of 5 | API Transformer |
| Complete info blockconditional Contract QualityThe provider has to supply the contact and description the linter asks for. |
4.0 of 4 | Validation and linting (1000+ rules) |
| Error responses documentedconditional Contract QualityOnly if the API really returns documented 4xx bodies. Linting cannot invent an error schema. |
4.0 of 4 | Validation and linting (1000+ rules) |
| Security schemes definedconditional Contract QualityOnly if the API has an auth scheme that the contract fails to declare. |
4.0 of 4 | Validation and linting (1000+ rules) |
| Real servers declaredconditional Contract QualityOnly if the API has a real, non-localhost host to declare. |
3.0 of 3 | Validation and linting (1000+ rules) |
| Webhooks or callbacksconditional Contract QualityOnly if the API already has webhooks. Linting cannot invent one. |
2.0 of 2 | Validation and linting (1000+ rules) |
What APIMatic ships that earns nothing (5)
- Validation and linting (1000+ rules) — The linter flags a missing parameter example as information and does not write one. SDK code samples are not request or response examples in the contract.
- Validation and linting (1000+ rules) — The 1000+ rules are APIMatic’s own ruleset inside its tooling. The check reads a ruleset the provider publishes.
- APIMatic Agent Skills — These skills teach an agent to operate APIMatic. They say nothing about the customer’s API and do not belong on its surface.
- SDK pagination and retry helpers — SDK retry and pagination helpers do not add an idempotency key to the contract. The dimension reads the OpenAPI.
- SDK generation in seven languages — Typed SDK errors are built from whatever error schemas the contract already has. Generation does not add a shared error schema.
A model, not a score. Adopting this vendor changes a provider's Kin Score only when the provider publishes the resulting artifacts on its own surface; nothing here writes a score, and no sponsorship or partnership can. The rating is not for sale → · Full vendor facets artifact
APIs 5
Individual APIs this provider publishes, each with its own machine-readable definition.
APIMatic API Transformer API
APIMatic API Transformer converts API definition files between more than 15 supported API specification formats including OpenAPI, RAML, API Blueprint, WSDL, WADL, and Postman C...
APIMatic Portals API
Generate an APIMatic developer portal from a build input, synchronously (POST /portal) or asynchronously (POST /portal/v2 with status polling and download) — 4 operations, read ...
APIMatic SDK Generation API
Generate SDKs from an API definition uploaded as a file or given by URL, list, fetch, download and delete code generations, and run asynchronous SDK generation from a build inpu...
APIMatic Transformation API
Transform an API definition from one specification format to another, by file or by URL, then list, fetch, download and delete transformations — 7 operations, read from the refe...
APIMatic Validation API
Validate an API definition by file or by URL, in the original and V2 validation endpoints — 4 operations, read from the reference data APIMatic serves for its own Platform API p...
MCP Servers 2
Model Context Protocol servers that expose these APIs to AI agents.
MCP Server
MCP SERVERAgent Skills 2
Packaged agent skills for driving this provider's APIs from an AI assistant.
apimatic-portal
AGENT SKILLapimatic-sdk
AGENT SKILLPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Apimatic Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Apimatic Finops
FINOPSFeatures 7
Notable capabilities this provider offers.
Idiomatic SDK Generation
Generate production-ready SDKs in Python, Java, C# .NET, TypeScript, PHP, Ruby, and Go from any API specification.
API Documentation Portals
Generate interactive developer documentation portals with code samples, guided walkthroughs, and code playground.
API Specification Validation
Validate and lint API specifications with detailed error reports and best practice recommendations.
API Format Transformation
Convert API definitions between 15+ formats including OpenAPI 3.0, Swagger 2.0, RAML, API Blueprint, and Postman Collections.
MCP Server Generation
Generate Model Context Protocol (MCP) servers from API specifications for AI agent integration.
DX as Code
Define and automate your entire developer experience pipeline as code with CI/CD integration.
OpenAPI Linter GitHub App
Automatically validate OpenAPI specifications in GitHub pull requests via the APIMatic linter GitHub App.
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Semantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Apimatic Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
APIMatic API Rules
SPECTRALJSON Schema 7
Standalone JSON Schema definitions for this provider's data models.
ApiValidationSummary
JSON SCHEMAExportFormats
JSON SCHEMAGenerateSdkViaUrlRequest
JSON SCHEMAPlatforms
JSON SCHEMATransformViaUrlRequest
JSON SCHEMATransformation
JSON SCHEMAUserCodeGeneration
JSON SCHEMAScroll for all 7
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 4
What developers build with this provider.
Automated SDK Publishing
Automatically generate and publish SDKs to npm, PyPI, Maven, and other package registries on every API change.
Developer Portal Generation
Generate and host comprehensive API documentation portals with interactive examples and code playground.
API Specification Migration
Transform legacy Swagger 2.0 or RAML specs to OpenAPI 3.0 for modern tooling compatibility.
CI/CD API Governance
Integrate API validation and linting into CI/CD pipelines to enforce quality gates on API changes.
Integrations 3
Pre-built integrations with other platforms and tools.
MuleSoft
APIMatic integration for generating SDKs from MuleSoft API definitions.
Redocly
Integration for enhanced API documentation workflows.
GitHub Actions
CI/CD integration for automated SDK generation and API validation in GitHub workflows.
Solutions 3
Packaged solutions this provider offers.
Free Plan
Basic SDK generation and API validation for individual developers.
Team Plan
Advanced SDK generation, portal publishing, and team collaboration features.
Enterprise Plan
Full developer experience automation, custom branding, SLA, and dedicated support.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 8
MCP servers, agent skills, and machine-readable catalogs
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Design & Contract 9
Pagination, idempotency, versioning, errors, and events
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Build 12
SDKs, sample code, and the tooling you integrate with
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Access & Security 4
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 4
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.