# universal x402 & A2A endpoint (x402helper.xyz)

Gates registered API endpoints behind per-request USDC micropayments over the x402 protocol across several chains.

- Atlas card: https://inite.ai/en/atlas/x402helper.xyz
- Site: https://x402helper.xyz
- For: API owners and developers monetizing endpoints for AI agents via x402 micropayments
- Categories: dev
- Use not measured/100 · alive 100/100

## Used for

- register API endpoints with per-request USDC prices
- let AI agents pay per request for structured data
- accept USDC micropayments across multiple blockchain networks

## Price

Not read yet.

## For developers

- MCP server: xyz.x402helper/mcp (namespace; open on 2026-10-29, 2 tools)
- Read 2026-10-29

## MCP server, measured daily

Server: https://x402helper.xyz/mcp, checked every day since 2026-10-29 (5 checks).

- Answered: measuring, 5 daily checks so far
- Median first answer: 709 ms
- Sign-in: none
- Context its tool definitions take: about 1048 tokens (4 tools)
- Tool definitions: B, 79/100
- Failing "params_described": 1 of 4 tools
- Failing "annotations": 4 of 4 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-29

---

Source: INITE Atlas, https://inite.ai/en/atlas/x402helper.xyz. JSON: https://inite.ai/api/atlas/x402helper.xyz. MCP: https://inite.ai/api/mcp (atlas_lookup).