Mobility Quote Agent

Provider-agnostic A2A agent for mobility quote/discovery. It exposes one skill, get_quote, over JSON-RPC and returns route options sorted by estimated cost.

The first real provider path is SkedGo / TripGo. It is self-serve and useful for multimodal route discovery; booking/payment remains a future provider-specific integration.

The no-key production fallback is Estimated Taxi: it estimates distance, ETA, and fare from a transparent local formula. This is not a live provider price and must be labelled as an estimate.

Human-readable address input is resolved to coordinates with OpenStreetMap Nominatim before providers run. Coordinate input still works directly. The agent also returns a no-price Yandex Go route launcher when coordinates are available. This is a deeplink, not a Yandex price quote or comparison result.

Payment metadata is advertised through the Agent Card and /payment-info. The current default price is 0.001 USDC per quote on Base, paid to 0x55CFe1Dd5d341e5f9D57ADf26f98c8E8727bb3C2. Facilitator-backed verify/settle is wired through OpenX402. Full x402 enforcement is off by default until a live paid request is tested.

Files

a2a-quote-agent/
  server.py                 A2A server: Agent Card + JSON-RPC message/send
  agent_card.py             Builds /.well-known/agent-card.json
  payments.py               x402/Base USDC payment metadata helpers
  client_test.py            Discovery + JSON-RPC smoke test
  MARKETPLACE-LISTING.md    Draft listing for A2A/OpenClaw marketplaces
  providers/
    __init__.py             Provider registry
    base.py                 Provider/Quote contract
    estimate.py             No-key coordinate fare estimator
    mock.py                 Demo providers
    geocode.py              No-key address-to-coordinate resolver
    tripgo.py               Live SkedGo/TripGo adapter
    yandex.py               No-price Yandex Go deeplink builder

Run locally

cd C:\agent\a2a-quote-agent
python server.py 8080
python client_test.py

Agent Card:

http://localhost:8080/.well-known/agent-card.json

Enable TripGo

Get a self-serve key from SkedGo / TripGo, then run:

$env:TRIPGO_API_KEY="YOUR_KEY"
$env:PUBLIC_BASE_URL="http://localhost:8080"
python server.py 8080

TripGo v1 in this agent expects coordinate input:

quote from 25.1972,55.2744 to 25.2532,55.3657

The server can also resolve normal addresses before calling providers:

quote from Dubai Mall to DXB Airport

Resolved coordinates are returned in resolved_route. Address geocoding uses OpenStreetMap Nominatim as a no-key MVP layer; for heavier production traffic, configure Google, TomTom, HERE, or a self-hosted geocoder later.

Coordinate routes and successfully resolved address routes enable route_launchers[] with an "Open in Yandex Go" deeplink.

Mock providers stay enabled by default for demos and health checks. To run only live providers:

$env:INCLUDE_MOCK_PROVIDERS="0"

Payment metadata

The server advertises x402-compatible payment terms without requiring a private key:

$env:PAYMENT_RECEIVE_ADDRESS="0x55CFe1Dd5d341e5f9D57ADf26f98c8E8727bb3C2"
$env:X402_PRICE_USDC="0.001"
$env:X402_ADVERTISE="1"
$env:X402_ENFORCE="0"
$env:X402_FACILITATOR_URL="https://facilitator.openx402.ai"
python server.py 8080

Discovery endpoints:

/.well-known/agent-card.json
/payment-info
/.well-known/payment-info.json
/x402/payment-required

/x402/payment-required returns HTTP 402 with a PAYMENT-REQUIRED header that contains Base64-encoded JSON payment terms. When a paid client retries the JSON RPC endpoint with a PAYMENT-SIGNATURE header, the server posts the payment payload and selected requirements to the facilitator /verify, performs the quote, then posts to /settle and returns PAYMENT-RESPONSE on success.

Keep X402_ENFORCE=0 until a live paid request is tested. With enforcement off, free quote smoke tests continue to work, while paid clients can still submit PAYMENT-SIGNATURE and settle.

With mocks disabled and no live provider configured, coordinate routes still return an estimated fare plus route launchers:

$env:INCLUDE_MOCK_PROVIDERS="0"
python server.py 8080
python test_yandex_launcher.py

That mode is the clean no-approval MVP: transparent estimated fare, no displayed Yandex price, no competitor price comparison, and an "Open in Yandex Go" route deeplink where supported.

Publish checklist

• Put the server behind public HTTPS.
• Set PUBLIC_BASE_URL=https://212-47-77-33.sslip.io.
• Verify https://212-47-77-33.sslip.io/.well-known/agent-card.json.
• Run python client_test.py https://212-47-77-33.sslip.io.
• Use MARKETPLACE-LISTING.md for A2A/OpenClaw marketplace submission.