MioDio LLC

https://meridian.miodiollc.com/v1/risk/0x0000000000000000000000000000000000000001

● healthy x402

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+ 68.4 / 100

Availability 20.0 / 20

Endpoint responded (HTTP 402)

Payability 15.0 / 15

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

Demand 11.4 / 35

14 distinct payers, 63 USDC transfers in the last 30 days; the wallet is shared by 2 listings, so each is credited 1/2

Performance 8.0 / 10

Last probe answered in 567 ms (full marks at 200 ms or less)

Readiness 14.0 / 15

Agent readiness 93/100

Owner verified 0.0 / 5

Nobody has claimed this listing yet

Endpoint last checked 18 h ago. On-chain activity last read 35 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

A · 93/100

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 B+, 68.4/100), 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	25/25	Paid endpoint answers with an HTTP 402 challenge (567 ms).
x402 version	n/a	x402 version not observed yet.
Signed descriptor	n/a	No x402 standard defines a signed descriptor.
Uptime (30 days)	15/15	9/9 probes succeeded over 30 days (100%).
Resource declaration	10/10	Declares 12 paid resource(s).
Verified identity	5/10	Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
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 75 points, scaled to 100.

Responsiveness: Responsive (567 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest. 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. It also feeds 15 points of the x402 quality grade.

Compared with peers

Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 94% of peers; This listing 93 · peer median 78
Latency: Faster than 14% of peers; This listing 567 ms · peer median 205 ms

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

Verified identity −5 — Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.

How many agent tools actually work · All statistics

Paid endpoints

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

GET https://meridian.miodiollc.com/v1/risk/0x0000000000000000000000000000000000000001 $0.0050 / call

Check an Aave v3 position on Base or Ethereum: health factor, collateral, debt, available borrows, LTV, and liquidation distance for one address. $0.005 USDC on Base. Errors: 400 invalid_address or unsupported_chain (chain must be base or ethereum), 402 payment required. An upstream RPC failure is a

GET https://meridian.miodiollc.com/v1/lido/exit-risk $0.0050 / call

Check what it takes to exit a stETH amount on Ethereum: Curve stETH/ETH peg, Lido withdrawal queue ETA, and exit liquidity for that amount. $0.005 USDC on Base. Errors: 400 amount_required or invalid_amount, 402 payment required. An upstream RPC failure is a charged 200 with status partial/error. Un

GET https://meridian.miodiollc.com/v1/vault/0xc1256Ae5FF1cf2719D4937adb3bbCCab2E00A2Ca $0.0050 / call

Check one ERC-4626 vault on Base or Ethereum: share price, drawdown, share price change over a lookback (past data, not a promise), and idle cash. Positions are never invented. $0.005 USDC on Base. Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required. An upstream RP

GET https://meridian.miodiollc.com/v1/passport/0x0000000000000000000000000000000000000001 $0.0200 / call

Deep Passport: one call, one decision card for an address. Joins an Aave v3 position check, a Lido stETH exit check (default 32 stETH), and an optional ERC-4626 vault check. Chain is base or ethereum. $0.02 USDC on Base. Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment r

GET https://meridian.miodiollc.com/v1/sanctions/0x0000000000000000000000000000000000000001 $0.0050 / call

Screen one wallet address against the OFAC SDN sanctions list (exact match on SDN digital currency addresses). Answers match or no match. Informational only. No match does not mean the wallet is clean. $0.005 USDC on Base. Errors: 400 invalid_address or unsupported_chain, 402 payment required, 503 s

GET https://meridian.miodiollc.com/v1/passport-sanctions/0x0000000000000000000000000000000000000001 $0.0200 / call

Onboard a counterparty in one call: Deep Passport plus an OFAC SDN exact match screen for one address. Informational only. No match does not mean the wallet is clean. $0.02 USDC on Base. Errors: 400 invalid_address, unsupported_chain or invalid_amount, 402 payment required, 503 sanctions_list_unavai

POST https://meridian.miodiollc.com/v1/sanctions/batch $0.1000 / call

Screen 1 to 50 wallet addresses against the OFAC SDN sanctions list in one call (exact match). Built for payout and treasury agents. Informational only. No match does not mean a wallet is clean. $0.10 USDC on Base per batch. Errors: 400 invalid_body, invalid_address or unsupported_chain, 402 payment

POST https://meridian.miodiollc.com/v1/drift $0.0050 / call

Check that an unsigned transaction or EIP-712 signature request matches what the user asked for. With intent, answers match, drift, or cannot_verify. Without intent, decodes Permit, Permit2, DAI, CoW, Seaport, or EIP-7702 and lists risk flags. A match is not a guarantee. $0.005 USDC on Base. Errors:

POST https://meridian.miodiollc.com/v1/simulate $0.0100 / call

Simulate an unsigned transaction on Base or Ethereum before signing: success or revert, gas, balance changes, approvals, and warnings. A point-in-time dry run, not a guarantee of the final result. Meridian by MioDio never signs or moves funds. $0.01 USDC on Base. Errors: 400 invalid_body, invalid_ad

POST https://meridian.miodiollc.com/v1/payment-check $0.0050 / call

Verify a USDC payment on Base: checks a USDC Exact authorization or transfer on chain, whether the nonce is used, matching transfers within a 120 minute window, and confirmations. Informational and point-in-time. $0.005 USDC on Base. 503 and not settled if every read fails. Never signs or moves fund

GET https://meridian.miodiollc.com/v1/recipient/0x0000000000000000000000000000000000000001 $0.0050 / call

Check a recipient address before you send: contract or wallet on Base and Ethereum, EIP-7702 status, USDC freeze (Base and Ethereum), USDT freeze (Ethereum), OFAC exact match, burn flags, and optional lookalike address check for address poisoning. Informational, not advice. $0.005 USDC on Base. 400

GET https://meridian.miodiollc.com/v1/x402-preflight $0.0050 / call

Check an x402 seller before you pay: fetches the seller URL once and reports its payment requirements (scheme, network, asset, amount, payTo type) plus an OFAC exact match on payTo. Informational, not advice. $0.005 USDC on Base. 400 invalid_url after pay (not settled); unpaid 402. Unreachable (DNS/

How to call

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

curl -sS -i -X GET https://meridian.miodiollc.com/v1/risk/0x0000000000000000000000000000000000000001  # expect HTTP 402 Payment Required (about 0.005 USDC/call)

/.well-known/x402.json

https://meridian.miodiollc.com/.well-known/x402

Listed in

Directories this entry was found in.

x402 since 2026-11-04 a2a since 2026-11-05