If your agent screens a Base ERC-20 before it buys (honeypot / sellability, transfer tax, owner-mint-pause flags, liquidity), you can settle that check per-call over x402 in USDC on Base — no API key, no signup. Several providers offer it. Here is what an address → safety verdict call costs, by advertised price.
| Provider | Route | Advertised / call | vs. Grey Ridge |
|---|---|---|---|
| Grey Ridge | /chain/token-security |
$0.009 | — |
| Grey Ridge | /chain/token-report (full evidence) |
$0.01 | 1.1× |
| grokbot-hk | /token/:address |
$0.01 | 1.1× |
| agentsvc.io | /api/v1/proxy/token-security |
$0.01 | 1.1× |
| lanescrypt | /api/token-safety/:chain/:address |
$0.10 | 11.1× |
| losbeto.xyz | /job/token-research |
$0.20 | 22.2× |
Prices read 2026-10-21. Grey Ridge prices come straight from the live discovery manifest
/.well-known/x402; competitor
prices are the amounts those endpoints advertise in the public x402 facilitator catalogue.
One additional provider (x402.onchainexpat.com) does not advertise a per-call price; it was the
single largest observed token-safety spender on Base in the window (~$4.95 settled from one buyer,
Blockscout ERC-20 transfers), but with no advertised rate we don’t quote a multiple.
For the cheapest advertised rivals it’s a tie at $0.01; against the mid and premium ones you pay 11×–22× more for the same category of pre-trade check. Grey Ridge is at or below the floor, returns a SAFE/CAUTION/AVOID verdict with the underlying evidence, and the free preview lets you see the exact output before anything settles.
curl "https://x402-data-api.sigrunner.workers.dev/chain/token-report/preview?token=0xYourBaseToken"
Paid route, same depth — GET /chain/token-report?token=0x… at $0.01 USDC via x402 on Base.
Swap-time guard GET /gate/swap returns GO / HOLD / BLOCK at $0.008. An x402 client
(x402_requests, @x402/fetch) pays and retries the 402 automatically.
Code: greyridge-x402-tools · Contact: contact@greyridgesignals.ai