# Clix

**Canonical:** https://apis.io/providers/clix-so/  
**Website:** https://clix.so/  
**APIs profiled:** 2

Clix is a US-based, developer-first mobile push notification platform for iOS, Android, React Native and Flutter — one CLI command (clix install) automates Firebase Cloud Messaging and APNs setup, and the console adds behaviour-triggered and API-triggered campaigns, real-time delivery logs, full-funnel analytics and device/user lifecycle management, priced free to 100K active devices then $30/month. For developers and agents it publishes a small REST API at https://api.clix.so (OpenAPI 3.1.0 generated from clix/external/v1/clix.proto: 11 operations across users, devices, events, messages:send, live-activities:start and campaigns/{id}:trigger, authenticated with X-Clix-Project-ID + X-Clix-API-Key), an A2A agent at https://api.clix.so/a2a whose card at /.well-known/agent-card.json is served in both 0.3.0 and 1.0 shapes and exposes four skills (create-user, track-event, send-push-notification, trigger-campaign) with idempotency keys, SSE streaming, task cancellation and task webhooks, a stdio MCP server (@clix-so/clix-mcp-server) plus a Mintlify docs MCP endpoint — both documentation-only — an open agent-skills repo, first-party SDKs on Maven Central, CocoaPods/SwiftPM, pub.dev and npm, a self-hosted status page with a published 99.5% monthly SLO, and console-configured PUSH_SENT/PUSH_FAILED webhooks.

## Kin Score — 67.8 / 100 (exemplar)

Scored 2026-10-09 under rubric 0.23.0. Trend: flat (+0.0 from 67.8).

| Facet | Score |
|---|---|
| Discoverability | 75.0 |
| Contract Quality | 55.9 |
| Contract Governance | 18.2 |
| Operational Transparency | 65.8 |
| Developer Ergonomics | 78.6 |
| Access Clarity | 76.3 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 36.3 (matched via fallback).

## Agent readiness — 44.1 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | documented |
| Error Semantics | derived |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | conformant |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (3)

- **Clix A2A Agent** — Agent2Agent (A2A) protocol surface: a public agent card at https://api.clix.so/.well-known/agent-card.json (0.3.0 shape by default, 1.0 shape under the A2A-Version: 1.0 header; ...
- **Clix MCP Server** — Model Context Protocol surfaces, both documentation-only: the provider's stdio server @clix-so/clix-mcp-server 0.1.4 (npx -y @clix-so/clix-mcp-server@latest; tools search_docs a...
- **Clix Clix External Service API** — The ClixExternalService API from Clix — 10 operation(s) for clixexternalservice.

## MCP servers (1)

- **Clix MCP Server** — Clix has two MCP surfaces and neither one executes Clix operations — both retrieve documentation. (1) The provider-built "Clix MCP Server" is a stdio npm package, @clix-so/clix-...

## Security (2)

- **Clix So Authentication** — apiKey · 5 schemes
- **Clix So Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Clix So Plans Pricing**

## Tags

Push Notifications, Mobile, Messaging, Campaigns, Event Tracking, Customer Engagement, A2A, MCP, Agents, SDK, United States, Company

---

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