# Expo

**Canonical:** https://apis.io/providers/expo/  
**Website:** https://expo.dev  
**APIs profiled:** 7

Expo is a React Native development platform providing cloud infrastructure for building, submitting, updating, and managing mobile apps. Expo Application Services (EAS) delivers REST and CLI-driven APIs for EAS Build (cloud compilation and code signing for Android and iOS), EAS Submit (automated App Store and Google Play submissions), EAS Update (over-the-air JavaScript bundle delivery), EAS Workflows (CI/CD pipelines with cron and Slack integration), EAS Hosting (edge deployment of Expo Router and React Native web apps), EAS Insights (analytics), EAS Observe (performance monitoring), and a Push Notifications broker. All services are accessible programmatically via the eas-cli, Personal Access Tokens, or Robot User tokens, and support webhooks for build and submission events.

## Kin Score — 31.4 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 31.4).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 15.5 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 19.0 |
| Commercial Clarity | 57.9 |
| Access Clarity | 57.9 |

## 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 (7)

- **EAS Build API** — Cloud compilation and code-signing service for Android and iOS React Native apps. Submits build jobs via eas-cli or programmatic token access, returns build artifacts, and fires...
- **EAS Submit API** — Automated upload service that publishes compiled app binaries to the Apple App Store and Google Play Store directly from the cloud. Fires SUBMIT webhooks on completion. Removes ...
- **EAS Update API** — Over-the-air update delivery service that pushes JavaScript bundle fixes directly to end users without requiring a full app store submission. Tracks Monthly Active Users (MAU) a...
- **EAS Workflows API** — CI/CD automation service for React Native apps supporting scheduled cron jobs, Slack integration, and automated build and release pipelines. Extends EAS Build and Submit with wo...
- **EAS Hosting API** — Edge deployment service for Expo Router and React Native web applications, including API routes. Provides 100,000 monthly requests, 1 million CPU-ms, and 1 GB storage on all pla...
- **Push Notifications API** — Expo's hosted push notification broker that abstracts Apple APNs and Google FCM into a single REST endpoint. Delivers push messages to iOS and Android devices registered with th...
- **EAS Webhooks API** — Event notification system that delivers HTTP POST payloads to configured endpoints when EAS Build or EAS Submit jobs complete. Payloads are signed with HMAC-SHA1 using a shared ...

## Security (3)

- **Expo Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Expo Vulnerability Disclosure** — security.txt · contact published
- **Expo Trust Center** — SOC 2, GDPR

## Plans (1)

- **Expo Plans Pricing**

## Tags

React Native, Mobile Development, Build Automation, Over-the-Air Updates, CI/CD, App Store Submission, Push Notifications, Cloud Build, Developer Tools

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