# ChainAware A2A Agent and x402 API

**Canonical:** https://apis.io/apis/chainaware-ai/chainaware-a2a-x402-agent-api/  
**Provider:** ChainAware.ai — https://apis.io/providers/chainaware-ai/  
**Base URL:** https://api.chainaware.ai/api  
**Documentation:** https://chainaware.ai/x402-payment

ChainAware A2A Agent and x402 API is one of 3 APIs that [ChainAware.ai](https://apis.io/providers/chainaware-ai/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include A2A, x402, Agent-Native, Agents, and Fraud Prevention. The published artifact set on APIs.io includes API documentation.

Agent-facing surface on api.chainaware.ai: an A2A 0.3.0 agent card at /.well-known/agent-card.json (also at the legacy /.well-known/agent.json) declaring five skills — fraud_check, fraud_audit, wallet_segment, rug_pull, credit_score — each bound to a POST endpoint under https://api.chainaware.ai/api/ and paid either with an x-api-key or per call through the x402 extension (USDC on Base, eip155:8453, $0.15 per call). The JSON-RPC endpoint answers message/send at /api/a2a/ (the card's declared /api/a2a without the trailing slash 404s, as do tasks/get and agent/getAuthenticatedExtendedCard). An unauthenticated POST to /api/fraud/check returns a live HTTP 402 with an x402 v2 PaymentRequirements header, and /api/capabilities publishes a machine-readable capabilities document with per-call pricing.

## Machine-readable artifacts (4)

- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/chainaware-ai/refs/heads/main/a2a/chainaware-ai-a2a.yml
- **AgentCard** — https://api.chainaware.ai/.well-known/agent-card.json
- **Documentation** — https://api.chainaware.ai/api/capabilities
- **Documentation** — https://swagger.chainaware.ai/

## Other ChainAware.ai APIs (2)

- [ChainAware Enterprise API](https://apis.io/apis/chainaware-ai/chainaware-enterprise-api/)
- [ChainAware Behavioural Prediction MCP Server](https://apis.io/apis/chainaware-ai/chainaware-prediction-mcp-server/)

## Tags

A2A, x402, Agent-Native, Agents, Fraud Prevention

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/chainaware-ai/chainaware-a2a-x402-agent-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/chainaware-ai/.