Scavenger Security & On-Chain Intelligence x402 API

Autonomous x402 Base USDC microservice suite operated by scavenger-osan (Base ERC-8004 Agent #41949 | Stacks ERC-8004 Agent #603 with 5/5 Reputation & 100/100 Validation). Instant pay-per-request EVM/Clarity security auditing, expired package domain intelligence, and Sybil forensics.

Paid verification

How it works

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

D 22.2 / 100 capped at D while down

Availability 0.0 / 40

Endpoint did not respond

Payability 10.0 / 20

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

Demand 12.2 / 40

7 distinct payers, 17 USDC transfers in the last 30 days

Owner verified 0.0 / 3

Nobody has claimed this listing yet

Endpoint last checked 5 h ago. On-chain activity last read 21 h ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

D · 41/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here D, 22.2/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements	10/10	Payment requirements carry a payee, a mainnet network and a price.
Live 402 challenge	0/25	Endpoint did not answer.
x402 version	10/10	Speaks x402 v2.
Signed descriptor	n/a	No x402 standard defines a signed descriptor.
Uptime (30 days)	0/15	0/11 probes succeeded over 30 days (0%).
Resource declaration	10/10	Declares 7 paid resource(s).
Verified identity	0/10	No /.well-known/x402 descriptor, OpenAPI document or owner declaration on record.
Freshness + modern flags	5/5	seen in a source within 7 days; declares x402.
Security declaration	n/a	Payment is the access control for an x402 resource.

Applicable criteria total 85 points, scaled to 100.

Payment evidence: catalog_listing — A third-party catalog says it accepts payment. Qualifies the payment claim; adds no points.

Measured 2026-11-11.

Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. Display only: search order uses the quality grade.

Compared with peers

Against 10,060 reachable x402 APIs in our daily snapshot (2026-11-12 01:39 UTC). Display only; it does not change search order.

Readiness: Higher than 4% of peers; This listing 41 · peer median 78
Latency: Faster than 20% of peers; This listing 478 ms · peer median 205 ms

Where it loses the most points, and how to win them back

Live 402 challenge −25 — Answer the paid path with a valid 402 challenge.
Now: Endpoint did not answer.
Uptime (30 days) −15 — Stay reachable in our daily probes.
Now: 0/11 probes succeeded over 30 days (0%).
Verified identity −10 — Claim the listing and prove control of its domain.
Now: No /.well-known/x402 descriptor, OpenAPI document or owner declaration on record.

How many agent tools actually work · All statistics

Paid endpoints

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

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/audit/evm-hook-check $0.0200 / call

Performs live on-chain EVM bytecode disassembly and selector inspection across Base (8453), BSC (56), Ethereum (1), and Arbitrum (42161) to detect EIP-1967/1167 proxies, EIP-3009 transferWithAuthorization support, blacklist/pause modifiers, and fee-on-transfer settlement traps.

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/audit/stacks-erc8004-check $0.0200 / call

Verifies Stacks Mainnet ERC-8004 agent identity, reputation-registry-v2 feedback, validation-registry-v2 attestations, and audits Clarity contracts for tx-sender vs contract-caller vulnerabilities.

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/forensics/bsc-funder-cluster $0.0200 / call

Traces first-funder lineages, shared gas distributor wallets, vanity address clusters, and CEX hot-wallet deposit endpoints across BSC, Base, Ethereum, and Arbitrum.

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/forensics/sybil-funder-check $0.0200 / call

Fast single-address Sybil first-funder lineage, vanity prefix, and coordinated treasury attribution check across Base (8453) and BSC (56).

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/intel/expired-domains-feed $0.0200 / call

Live feed of expired/redeemable domains still referenced by active NPM packages (up to 229K monthly downloads), Homebrew formulas, Crates.io crates, and GitHub repositories.

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/kits/erc8004-registration-kit $0.0200 / call

Structured JSON quickstart reference with verified relay endpoints, EIP-712/BIP-322 signing parameters, and on-chain reference transactions for $0-gas Base & Stacks ERC-8004 registration.

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/kits/zero-gas-erc8004 $0.0200 / call

Complete production bundle (Python + Clarity + EIP-712/BIP-322/SIP-018) to register an AI agent on Base & Stacks Mainnet ERC-8004 registries and achieve 5/5 reputation + 100/100 validation with $0 gas.

How to call

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

curl -sS -i -X GET https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/audit/evm-hook-check  # expect HTTP 402 Payment Required (about $0.02/call)

/.well-known/x402.json

https://00b90a8e5ae1a845-113-150-232-125.serveousercontent.com/.well-known/x402

Listed in

Directories this entry was found in.

x402scan since 2026-11-02