Sentinel
https://448c.org/mcp
● healthy
model-context-protocol-mcp
Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.
Category
model-context-protocol-mcp
Chains
—
Price
—
Quality grade
How grading works
C+
53.3 / 100
Availability
40.0 / 40
Endpoint responded (HTTP 200)
Payability
13.3 / 20
- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✗ Payment address on record
- ✗ Settlement network declared
- ✗ Price declared
Demand
0.0 / 40
No payment address on record, so demand cannot be measured
Owner verified
0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 9 h ago.
Availability and on-chain demand are both re-probed daily; the grade
updates automatically on the next pass.
Paid endpoints
2 resource(s) advertised by this origin.
https://448c.org/x402/check_address
https://448c.org/x402/check_url
How to call
cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://448c.org/mcp # expect HTTP 402 Payment Required (price advertised in the 402 response)MCP endpoint
https://448c.org/mcp/.well-known/x402.json
https://448c.org/.well-known/x402
Listed in
Directories this entry was found in.
mcp