The directory of tools for agents

40EXTERNAL

402rates.com

Measured USDC transfer costs on Base, Polygon, Arbitrum, Ethereum and XDC: simulated gas, current token prices, fresh chain heads and applicable rollup L1 fees. Inputs…

APIx402

Listing info 80/100

0.01 USDC / call (eip155:8453); 10000 atomic units of 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 (eip155:137); 10000 atomic units of 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 (eip155:42161); 10000 atomic units of 0xfA2958CB79b0491CC627c1557F441eF849Ca8eb1 (eip155:50)Indexed

40EXTERNAL

402rates.com

Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabilities. HTTP payment options can include Base, …

APIx402

Listing info 80/100

0.001 USDC / call (eip155:8453); 1000 atomic units of 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 (eip155:137); 1000 atomic units of 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 (eip155:42161); 1000 atomic units of 0xfA2958CB79b0491CC627c1557F441eF849Ca8eb1 (eip155:50)Indexed

40EXTERNAL

402rates.com

Realised 30-day yields for 13 tokenized treasury funds under the Open Treasury Yield Basis. Measured rows use NAV, price or verified passive-holder balances, with obse…

APIx402

Listing info 80/100

0.03 USDC / call (eip155:8453); 30000 atomic units of 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 (eip155:137); 30000 atomic units of 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 (eip155:42161); 30000 atomic units of 0xfA2958CB79b0491CC627c1557F441eF849Ca8eb1 (eip155:50)Indexed

40EXTERNAL

402registry

Does an AI crawler see your site? Free registry lookup, x402 pricing; checks paid in USDC on Base.

MCP

Listing info 75/100

Price not supplied by publisherIndexed

40EXTERNAL

402registry

Agent-visibility check: does an AI crawler (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) actually see your site? ENTRY pack: 1 check for $2 ($2/check). Same servic…

APIx402

Listing info 80/100

2 USDC / call (eip155:8453)Indexed

40EXTERNAL

402registry

Agent-visibility check: does an AI crawler (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) actually see your site? BEST-RATE pack: 4 checks for $5 ($1.25/check). Sam…

APIx402

Listing info 80/100

5 USDC / call (eip155:8453)Indexed

40EXTERNAL

402registry catalog

Catalog snapshot: every site in the 402registry catalog of sites verified visible to AI crawlers, as one JSON file rendered at purchase, every record dated. Basic fiel…

APIx402

Listing info 80/100

0.05 USDC / call (eip155:8453)Indexed

40EXTERNAL

402registry quick

Quick review: does an AI crawler (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) actually see your site? Every rule, no model: $0.1 for one check. Returns the score,…

APIx402

Listing info 80/100

0.1 USDC / call (eip155:8453)Indexed

40EXTERNAL

402sentinel-mcp

x402 payment safety for AI agents: counterparty risk gate, payment firewall, compliance, RWA gate.

MCP

Listing info 65/100

Price not supplied by publisherIndexed

40EXTERNAL

402sentinel.com · /api/assess

Assess an x402 counterparty before paying. POST {target:{payto_address}, payment_context?, policy?}; payto may be a 0x EVM (Base) or base58 Solana seller. Returns risk…

APIx402

Listing info 80/100

0.002 USDC / call (eip155:8453)Indexed

40EXTERNAL

402sentinel.com · /api/assess/deep

Is this payment address safe to pay? DEEP version — deep counterparty assessment: same shape as /api/assess but scans more on-chain settlement history for higher confi…

APIx402

Listing info 80/100

0.02 USDC / call (eip155:8453); 20000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp)Indexed

40EXTERNAL

402sentinel.com · /api/assess/rwa

RWA risk gate: score a TOKENIZED ASSET (treasury, stock, credit) BEFORE an agent buys it. POST {target:{payto_address:<token contract>, network:eip155:1|eip155:8453}} …

APIx402

Listing info 80/100

0.02 USDC / call (eip155:8453); 20000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp)Indexed

Indexed listings, not certifications. Prices and protocols are publisher declarations. How the index works