A2A x402 Extension · Agent Payment Demo

Served byngrok tunnel endpoint Indexed external

Demonstrate cryptocurrency payment integration for Agent-to-Agent protocol interactions.

What it does

Demonstrate cryptocurrency payment integration for Agent-to-Agent protocol interactions.

  • Test A2A protocol payment flows
  • Demonstrate agent-to-agent micropayment settlement
  • Validate x402 extension integration for multi-agent systems

Ideal buyer

Multi-agent system developers, A2A protocol implementers, and agent orchestration platforms testing payment integrations.

Use with AXON

Run this through your governed agent wallet.

  1. 01
    Bootstrap AXON once with npx @axon402/init.
  2. 02
    Use the AXON runtime MCP tools to search_x402_services or inspect_x402_offer for this service.
  3. 03
    Quote, test-buy, then run the governed paid fetch through AXON.

Send this

Prompt for your agent

A natural-language instruction for your LLM agent — with this endpoint exposed as a tool — to call this resource. Not sent to the endpoint; the endpoint consumes the JSON body below.

Pasting this prompt into a raw ChatGPT or unconfigured agent will notexecute the paid endpoint flow. Run it through an agent with the AXON runtime / MCP tools exposed (see “Use with AXON” above) so the 402 challenge, quote, and governed fetch are handled for you.

“Test the A2A x402 payment extension with a dummy request”

Endpoint request body

The JSON payload your agent sends to the endpoint.

No request body required for this operation.

Advanced HTTP details

For integrators who need the raw protocol surface. Most agents should use AXON above instead of calling these directly.

curl fallback

curl https://vivisectional-sid-uncontrollably.ngrok-free.dev/api/dummy \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: [signed_payment_envelope]"

Payment & settlement details

Raw on-chain settlement parameters. AXON above handles these automatically through quote / test-buy / governed fetch.

baseexact
$1.00
per call
Pay-to address0xbe77b857cf35cb4adebdbfd73df89410c8aa6213
T/O: 60s asset 0x8335…2913

Price & network

Cheapest call$1.00
Networks
base

Trust & risk

Trust tier Indexed external
Pricing sanityExpensive outlierratio 50.00×
Risk flagsNo risks flagged
View JSON bundle

Indexed from facilitator discovery data

Last enriched:

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