# Relay Compiler

**Canonical:** https://apis.io/providers/relay-compiler/  
**Website:** https://relay.dev  
**APIs profiled:** 2

Relay is Meta's open-source JavaScript framework and ahead-of-time GraphQL compiler for building data-driven React applications. The Relay Compiler scans JavaScript code for GraphQL fragments, aggregates and optimizes data requirements for entire apps, pre-computes queries at build time for efficient runtime performance, and generates TypeScript/Flow types for React components. It supports pagination, mutations, subscriptions, and deferred data streaming via GraphQL directives.

## Kin Score — 19.5 / 100 (emerging)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 19.5).

| Facet | Score |
|---|---|
| Discoverability | 59.3 |
| Contract Quality | 11.3 |
| Governance | 15.2 |
| Contract Governance | 15.2 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 3.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| 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 |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (2)

- **Relay Compiler** — The Relay Compiler is Meta's ahead-of-time GraphQL compiler that generates optimized runtime artifacts and type-safe code for Relay applications. It processes GraphQL fragments ...
- **Relay Runtime** — The Relay Runtime provides the client-side execution environment for Relay applications. It includes the normalized in-memory store, network layer, and React hooks including use...

## Security (1)

- **Relay Compiler Domain Security** — TLSv1.3

## Plans (1)

- **Relay Compiler Plans Pricing**

## Tags

Code Generation, GraphQL, React, Meta, Open-Source, TypeScript, Build Tools

---

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