NullClear Arbiter

https://api.nullclear.dev/v1/bazaar/market-oracle

● healthy model-context-protocol-mcp

Autonomous x402 payment schema-escrow arbiter, spend firewall, failover & ERC-8004 Sybil oracle

Paid verification

No sponsored paid call yet.

Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.

Quality grade

How grading works

B 69.1 / 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 9.1 / 40

3 distinct payers, 12 USDC transfers in the last 30 days

Owner verified 0.0 / 3

Nobody has claimed this listing yet

Endpoint last checked 22 h ago. On-chain activity last read 2 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

9 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.

POST https://api.nullclear.dev/v1/clear

Deferred schema escrow execution proxy with invariants and failover

GET https://api.nullclear.dev/v1/score/{chainId}/{agentId}

Composite Sybil-resistant trust score and wash-trading audit

GET https://api.nullclear.dev/v1/stats

Public protocol telemetry and verified clearing history

GET https://api.nullclear.dev/v1/bazaar/market-oracle

GET https://api.nullclear.dev/v1/bazaar/token-security

GET https://api.nullclear.dev/v1/bazaar/wallet-risk

GET https://api.nullclear.dev/v1/bazaar/verified-fetch

GET https://api.nullclear.dev/v1/bazaar/audit

POST https://api.nullclear.dev/v1/bazaar/verify

How to call

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

curl -sS -i -X GET https://api.nullclear.dev/v1/bazaar/market-oracle  # expect HTTP 402 Payment Required (about 0.01 USDC/call)

MCP endpoint

https://api.nullclear.dev/mcp

/.well-known/x402.json

https://api.nullclear.dev/.well-known/x402

Listed in

Directories this entry was found in.

mcp