x402 and A2A - Portir

x402

POST https://agent.portir.xyz/x402 with a natural-language prompt. The agent answers with the same tools as the MCP server.

curl -X POST https://agent.portir.xyz/x402 \
  -H 'content-type: application/json' \
  -d '{"prompt":"Is NVDA fairly priced right now?"}'
# {"result":"NVDA is fairly priced (GO) right now."}

Property	Value
Price	Free today (`price_usd = 0`); the operator pays for the model
Rate limit	20 requests per 60 seconds for the whole process
Payment rail when priced	B402 (Binance Pay facilitator on BNB Chain)

A2A

The agent publishes an A2A agent card at https://agent.portir.xyz/.well-known/agent-card.json. Its skills follow Agent Studio’s ERC-8183 seller flow:

Skill	Does
`negotiate`	Send a task and terms; receive a wallet-signed price quote to anchor on-chain with `createJob` + fund
`notify_funded`	Tell the agent a job is funded; it verifies the signed quote and delivers in the background

Health

GET https://agent.portir.xyz/ping returns {"status":"HEALTHY"}.