x402 merchant
B20 Check$0.01 / callb20check.com
B20BaseToken-verificationSecurityAttestation

Legitimacy check for B20 tokens on Base. Verifies whether an address is a factory-native B20, detects copycats and known-asset imposters (homoglyph-aware), reports live issuer powers (mint, burn, pause, freeze, seize, admin) and issuer activity, and returns a danger/caution/ok verdict as an EIP-712-signed attestation an agent can independently verify.

MerchantReport

0x26b5…4ba1

0x26b57af5022250f01497f3e19dd537d01d124ba1Explorer
Received
$0.08
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
8
Last 7d vs prior 7d
2
Distinct counterparties
Over the whole indexed history

Received $0.08 of the $258.70M Roundhouse has indexed across 713,651 walletsless than 0.0001% of it.

Chains (from the recent scan): Base (8)

Funds flow over time

Activity

MarAprMayJunJulAugSep
LessMore

One square per day; click a day to see its settlements in the ledger.

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x7e57…2f09$0.00$0.06661d agoGraph
0x4195…314c$0.00$0.02275d agoGraph

Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.

Data quality

75% of observed volume is with a single counterparty, in all 8 observed settlements.

Recent activity

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0x26b5…4ba1's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x26b57af5022250f01497f3e19dd537d01d124ba1

Open skill.md
Show the prompt
Using Roundhouse, tell me whether this x402 merchant is worth paying: how many distinct
agents have paid it, how recently, and for what.

  Merchant wallet: 0x26b57af5022250f01497f3e19dd537d01d124ba1

curl -s 'https://api.roundhouseai.io/v0/merchants/0x26b57af5022250f01497f3e19dd537d01d124ba1'
curl -s 'https://api.roundhouseai.io/v0/entities/0x26b57af5022250f01497f3e19dd537d01d124ba1/settlements?limit=50'

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.