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Sideko

Sideko is an API tooling generation platform that turns an OpenAPI specification into a complete developer-tooling suite — SDKs in six languages (Python, TypeScript, Java, Go, C#, Rust), Model Context Protocol (MCP) servers for AI agents, on-brand documentation sites with an Automatic MCP surface, mock servers, and CLI tooling — without writing generation code. The platform's "Hybrid Codegen" pairs deterministic OpenAPI-driven generation with guided AI customization, and ships LLM coding-assistant rule files (Claude Code, Cursor, Gemini, GitHub Copilot) alongside each SDK so agents can extend the generated code without breaking regeneration. Customers include Prudential Financial and Magic Hour AI; Sideko's published Stripe SDK benchmark generated over one million lines of SDK code in under sixty seconds.

agent ready

Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.

Kin Score

API Evangelist profiles Sideko the way a machine reads it — 36 machine-readable artifacts across 18 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Sideko scores 61.3/100 (strong), with a separate agent-readiness read of 48/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 61.3/100 · strong
Contract Quality 19.7 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 14.2 / 20
Operational Transparency 5.5 / 13
Governance 8.8 / 12
Discoverability 8.8 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
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

How we profile Sideko

Each block below is one kind of artifact we hold for Sideko. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 18

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

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

Sideko CLI

The Sideko CLI is a Rust binary (current release v1.6.3, Aug 2025) that provides command-line access to the Sideko platform. Commands are organized into five resource groups — `...

Sideko SDK Update Action

GitHub Action that keeps Sideko-generated SDKs up to date with their parent API. Runs `sideko sdk update` in CI, opens a versioned PR with the regenerated SDK, and preserves any...

Sideko Node.js SDK

The Sideko Node.js SDK provides TypeScript and JavaScript bindings for the Sideko API. Generated by Sideko's own pipeline from the Sideko OpenAPI specification.

Sideko Python SDK

The Sideko Python SDK provides Python bindings for the Sideko API. Generated by Sideko's own pipeline from the Sideko OpenAPI specification.

Sideko Stripe TypeScript SDK (Sample)

Sample TypeScript SDK for the Stripe REST API, Sideko-generated as the benchmark behind the "Stripe API Challenge" blog post (over 1 million lines of SDK code generated in under...

Sideko Stripe Python SDK (Sample)

Sample Python SDK for the Stripe API, Sideko-generated as a companion to the TypeScript Stripe sample.

make-request-py (Sideko Runtime)

Modern Python HTTP client library with built-in authentication and response handling, used as the runtime by Sideko-generated Python SDKs.

make-request-js (Sideko Runtime)

Modern TypeScript HTTP client for browser and Node.js environments, used as the runtime by Sideko-generated TypeScript SDKs.

Sideko SDK Reference

Boilerplate code used by Sideko to generate SDKs, including example SDKs that demonstrate the generated surface across supported languages.

Sideko Homebrew Tap

Homebrew tap that publishes the `sideko` CLI binary (`brew install sideko-inc/tap/sideko`).

Sideko API Projects API

Manage API projects within the Sideko platform. Projects organize OpenAPI specifications and the tooling generated from them.

Sideko API Versions API

Manage versioned OpenAPI specifications inside an API project. Each version is the source of truth that drives SDK, MCP, mock-server, and documentation generation.

Sideko Authentication API

Manage API keys and authentication for the Sideko platform.

Sideko Documentation API

Publish and manage API documentation sites generated from OpenAPI specifications, including on-brand themes, custom domains, and AI-ready MCP documentation surfaces.

Sideko Linting API

Lint OpenAPI specifications against Sideko's generation-readiness rules and surface errors before SDK, MCP, or mock generation.

Sideko MCP Generation API

Generate and manage Model Context Protocol (MCP) servers from an OpenAPI specification so AI agents can call the API through structured MCP tools.

Sideko Mock Servers API

Deploy and manage mock server instances that simulate API behavior based on OpenAPI specs.

Sideko SDK Generation API

Trigger and manage SDK generation jobs for the six supported languages Python, TypeScript, Java, Go, C#, and Rust, with optional GitHub Actions and LLM coding-assistant rule fil...

Scroll within the panel for all 18 ·

Open Collections 1

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

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

Sideko API

OPEN COLLECTION

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Sideko Plans Pricing

3 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Sideko Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

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

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Sideko Context

23 classes · 16 properties

JSON-LD

Spectral Rules 2

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

Sideko API Rules

5 rules · 3 warnings

SPECTRAL

Sideko API Rules

11 rules · 4 errors · 6 warnings

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

Standalone JSON Schema definitions for this provider's data models.

ApiProject

7 properties

JSON SCHEMA

SidekoMcpGeneration

9 properties

JSON SCHEMA

SdkGeneration

8 properties

JSON SCHEMA

JSON Structure 1

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Sideko Api Project Structure

0 properties

JSON STRUCTURE

Examples 4

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

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

Sideko Authentication

apiKey · 1 scheme

SECURITY

Sideko Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

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

Sideko Agentic Access

23 operations · 12 acting

23 operations · 12 acting

AGENTIC

Resources

Every other property we hold for Sideko — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 1

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 2

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

← All providers · Data indexed from github.com/api-evangelist/sideko · machine-readable index on apis.io