x402 merchant
402api Token Check$0.02 / calltokencheck.402api.dev ↗
TokenBaseHoneypotTransfer-taxLiquidity

Call before buying, swapping into or accepting any Base ERC-20, to learn if you can sell it back. $0.02, ~1-3 s, measured on-chain: honeypot test (simulated buy then sell via the deepest pool: sell ok? round-trip loss vs fees), per-pool transfer tax from real recent swap receipts, USD liquidity per pool (Uniswap v2/v3, Aerodrome, Slipstream), sell quotes, and an ok/caution/avoid verdict citing each fact. Errors: 400/503 JSON {error}, not charged.

MerchantReport

0x8c8a…ffde

0x8c8a81e2acec6ed62421f1f4e7125b0b84ffffdeExplorer
Received
$0.10↓ 100%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
5↓ 100%
Last 7d vs prior 7d
2
Distinct counterparties
Over the whole indexed history

Received $0.10 of the $834.02M Roundhouse has indexed across 1,300,437 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (6)

Funds flow over time

Activity

AprMayJunJulAugSepOct
LessMore

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

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0xcb1d…057b$0.00$0.0848d agoGraph
0xa1d1…1978$0.00$0.0211d agoGraph
0xc9c7…1670$0.00$0.0216d agoGraph

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

Data quality

67% of observed volume is with a single counterparty, in all 6 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 0x8c8a…ffde's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x8c8a81e2acec6ed62421f1f4e7125b0b84ffffde

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: 0x8c8a81e2acec6ed62421f1f4e7125b0b84ffffde

curl -s 'https://api.roundhouseai.io/v0/merchants/0x8c8a81e2acec6ed62421f1f4e7125b0b84ffffde'
curl -s 'https://api.roundhouseai.io/v0/entities/0x8c8a81e2acec6ed62421f1f4e7125b0b84ffffde/settlements?limit=50'

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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