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Zambo Stack

https://zambo.dev/api/a2a

● healthy a2a-agent

Zambo provides a canonical MCP tool endpoint plus an authenticated, permissioned A2A coordination bridge.

Quality grade

How grading works

B 76.3 / 100

Availability 40.0 / 40

Endpoint responded (HTTP 200)

Payability 20.0 / 20

✓ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 16.3 / 40

13 distinct payers, 66 USDC transfers in the last 30 days

Owner verified 0.0 / 3

Nobody has claimed this listing yet

Endpoint last checked 20 h ago. On-chain activity last read 38 h ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

3 resource(s) advertised by this origin.

https://zambo.dev/api/x402/discovery

https://zambo.dev/api/x402/day-pass

https://zambo.dev/api/mcp

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -sS -i -X GET https://zambo.dev/api/a2a  # expect HTTP 402 Payment Required (about 0.99 USDC/call)

/.well-known/x402.json

https://zambo.dev/.well-known/x402

Listed in

Directories this entry was found in.

a2a