# Clix A2A Agent

**Canonical:** https://apis.io/apis/clix-so/clix-a2a-agent/  
**Provider:** Clix — https://apis.io/providers/clix-so/  
**Base URL:** https://api.clix.so/a2a  
**Documentation:** https://docs.clix.so/a2a/overview

Clix A2A Agent is one of 3 APIs that [Clix](https://apis.io/providers/clix-so/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include A2A, Agents, Agent-Native, and Push Notifications. The published artifact set on APIs.io includes API documentation, an API reference, and a getting-started guide.

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; graded conformant) and a JSON-RPC 2.0 endpoint at POST https://api.clix.so/a2a authenticated with a secret X-API-Key (clix_sk_ prefix). Four built-in skills — create-user, track-event, send-push-notification, trigger-campaign — each a projection of one REST operation, executed as tasks with SendMessage / SendStreamingMessage (SSE), GetTask, ListTasks (cursor pagination), CancelTask, task webhooks (CreateTaskPushNotificationConfig) and an authenticated extended card. Adds what the REST layer lacks: X-Clix-Idempotency-Key replay protection with 409 semantics and X-Request-ID tracing. The anonymous endpoint answers 401 Missing API key.

## Machine-readable artifacts (6)

- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/clix-so/refs/heads/main/a2a/clix-so-a2a.yml
- **AgentCard** — https://api.clix.so/.well-known/agent-card.json
- **Documentation** — https://docs.clix.so/a2a/overview
- **APIReference** — https://docs.clix.so/a2a/api-reference
- **GettingStarted** — https://docs.clix.so/a2a/quickstart
- **ToolCrosswalk** — https://raw.githubusercontent.com/api-evangelist/clix-so/refs/heads/main/mcp/clix-so-tool-crosswalk.yml

## Other Clix APIs (2)

- [Clix External API](https://apis.io/apis/clix-so/clix-external-api/)
- [Clix MCP Server](https://apis.io/apis/clix-so/clix-mcp-server/)

## Tags

A2A, Agents, Agent-Native, Push Notifications

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/clix-so/clix-a2a-agent/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/clix-so/.