# MoneyTools Agent Guide > Factual directory of x402 pay-per-call services run by MoneyTools for AI agents, plus referral/affiliate links we hold. Contains referral links. Disclosure: This page contains referral/affiliate links. If you sign up or pay through them, MoneyTools may earn a commission and you may get a discount where stated. Terms below are summarized from each program's official page on the date shown; check the official page before relying on them. Nothing here is financial, legal or investment advice. ## Our x402 services FREE TIER: every endpoint below gives 5 free calls per day per IP. Call the /v1 URL with parameters and no payment header; the reply shows freeTier.remaining (header x-free-calls-remaining). After that it answers HTTP 402 (x402). Python urllib: set a User-Agent header; on the legacy workers.dev hosts Cloudflare blocks the default "Python-urllib" UA (403, error 1010); api.moneytools.dev does not. Payment: x402 v2, USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, Base mainnet (eip155:8453), payTo 0x64eB63904Cf9688AC5B3087A72AcF9C31a273169, facilitator PayAI. - x402 Pay-Precheck ($0.005/call): https://api.moneytools.dev/v1/precheck?url= — Fetch a third-party x402 endpoint, parse its HTTP 402 payment terms (scheme, network, payTo, amount, asset) and screen payTo against the OFAC SDN crypto-address list before you pay. Returns ok|warn|block|not_402. Free demo: https://api.moneytools.dev/demo/precheck - x402 Settlement Verify ($0.003/call): https://api.moneytools.dev/v1/verify?txHash=<0x..>&network=base&payTo=<0x..>&amount= — Check on-chain that a USDC transfer to payTo succeeded with the expected amount and confirmations. Base, Base Sepolia, Polygon, Arbitrum, Avalanche, BSC. Free demo: https://api.moneytools.dev/demo/verify - x402 Recommend ($0.004/call): https://api.moneytools.dev/v1/recommend?task=&maxPrice=0.05&network=base — Ranked list of live x402 services for a task, from public directories with liveness probes; top 3 are pre-checked. Free demo: https://api.moneytools.dev/demo/recommend - Solana Mint Check ($0.005/call): https://api.moneytools.dev/v1/sol-mint?mint= — Rule-based safety check of a Solana SPL / Token-2022 mint: mint & freeze authority, permanent delegate, transfer hook/fee, pausable, default-frozen, largest-holder concentration. Returns riskScore 0-100 and verdict low|medium|high. Free demo: https://api.moneytools.dev/demo/sol-mint - Web Page to Markdown ($0.002/call): https://api.moneytools.dev/v1/read?url= — Fetch a public web page and return clean Markdown with a sha256 of the content. Respects robots.txt, public pages only, 1h cache. Free demo: https://api.moneytools.dev/demo/read - Email Address Check ($0.002/call): https://api.moneytools.dev/v1/email-check?email= — Validate an email address without sending mail or SMTP probing: syntax, domain, MX / null-MX, SPF, DMARC, disposable domain, role account, free provider, typo suggestion. Verdict valid|risky|invalid. Free demo: https://api.moneytools.dev/demo/email-check - Discovery: llms https://api.moneytools.dev/llms.txt; pricing https://api.moneytools.dev/pricing; openapi https://api.moneytools.dev/openapi.json; x402 https://api.moneytools.dev/.well-known/x402; agentCard https://api.moneytools.dev/.well-known/agent.json; mcp https://api.moneytools.dev/mcp; a2a https://api.moneytools.dev/a2a ## Referral bounty (20% of net revenue) Add ref= as a query parameter (or an X-Referrer header) to any paid call you route to one of the 6 paid endpoints: /v1/precheck, /v1/verify, /v1/recommend, /v1/sol-mint, /v1/read, /v1/email-check. Referrer accrues 20% of net revenue (amount received minus facilitator and gas fees) from referred paid calls that settle successfully on Base mainnet. Tracked off-chain (ref + ledger), settled monthly. Self-referral is not credited. Payouts are batched and sent manually in USDC on Base after owner review, minimum 1 USDC unpaid balance (smaller balances roll over); no automatic payouts. Check earnings: https://api.moneytools.dev/v1/referral/{address} ## Referral / affiliate programs - Firecrawl (Web scraping / web-to-markdown API) — Coming soon. Affiliate application not yet submitted/approved. No link yet. Official terms: https://www.firecrawl.dev/affiliates - dYdX (Perpetuals exchange) — Coming soon. Referral link not yet generated. Not available to US/Canada persons per dYdX terms. Official terms: https://help.dydx.trade - Aster (Perpetuals exchange) — Coming soon. Referral code not yet generated. Official terms: https://www.asterdex.com - Hyperliquid (Perpetuals exchange) — Pending. Per Hyperliquid docs: 4% fee discount on the referee's first $25M volume. Pending: Hyperliquid requires $10,000 cumulative volume before a referral code can be created. Our code will be added automatically when we reach it. Official terms: https://hyperliquid.gitbook.io/hyperliquid-docs/referrals - Lighter (Perpetuals exchange) — Active: https://moneytools.dev/go/lighter?src=llms (redirects to https://app.lighter.xyz/?referral=MONEYTOOLS) code MONEYTOOLS. Per Lighter docs: 10% discount on trading fees you pay (rebated weekly), applied only if the code is used at sign-up. Standard accounts already pay 0% on regular orders, so the discount matters only on paid account types / advanced orders. Our referral link (MoneyTools earns a share). Lighter's Standard account is 0% maker/0% taker on regular orders, so MoneyTools earns nothing from Standard regular trades; we earn only from fees referred users actually pay (paid Premium/Advanced/Plus account types, and advanced/TWAP orders). Code applies only at sign-up and cannot be added later. Not available in the US, Canada, UK and other restricted regions per Lighter terms. Not investment advice. Official terms: https://docs.lighter.xyz/programs/referral-program ## Perp DEX trading fee comparison (contains referral-link disclosure) This page is a referral-link page: where a venue shows a link marked 'our referral link', MoneyTools earns a share of the fees you pay through it, and you get only the discount the venue's own docs state. As of 2026-11-03 we hold an active referral link only for Lighter (code MONEYTOOLS); MoneyTools earns only from fees referred users actually pay (Lighter's Standard account is fee-free on regular orders). Rates are copied from each venue's official docs on the date shown; venues change fees often - verify on the official page before trading. Nothing here is investment, financial or legal advice. Leveraged derivatives can cause large losses. Each venue restricts some regions (e.g. the United States); you are responsible for complying with the venue's terms and your local law, and must not use VPNs or other means to bypass restrictions. Checked 2026-11-03. Scope: Perpetual futures, entry (lowest-volume) fee tier, default account type, no staking/holding discounts, major crypto markets. Promotions and per-market overrides excluded unless noted. Order: Ascending by entry-tier taker fee, then maker fee. Venues with unconfirmed rates are listed last. Referral status never affects the order. 1. Lighter - Standard account (default), regular orders: taker 0%, maker 0%. Standard: 0 maker / 0 taker on regular perp and spot orders, 1 bp on TWAP/advanced orders and RFQ, 300 ms taker latency. Opt-in Premium/Advanced: 0.0040% maker / 0.0280% taker (no LIT staked), 140 ms. Opt-in Plus: 0.5 bps both sides. Fee source: https://docs.lighter.xyz/trading/trading-fees. Referee benefit: 10% discount on fees paid (relevant to paid account types and advanced orders), rebated weekly in LIT; code must be used at sign-up. Referrer reward: 10% of referred users' gross fees (Bronze); 20% (Silver, 15+ active referrals, granted at Lighter's discretion). Paid weekly in LIT. (source: https://docs.lighter.xyz/programs/referral-program). Our referral link: https://moneytools.dev/go/lighter?src=llms (redirects to https://app.lighter.xyz/?referral=MONEYTOOLS; contains referral, MoneyTools earns a share). Restrictions: Not available to persons located in, resident of or organized in the United States, Canada, UK, China, North Korea, Russia, Ukraine, Cuba, Iran, Venezuela, Syria or comprehensively sanctioned jurisdictions. (https://lighter.xyz/terms) 2. Aster - Perpetuals, Crypto - General pairs, base VIP rate: taker 0.04%, maker 0%. Crypto Group B pairs: 0.1% taker; RWA pairs: 0.0125% taker; all maker 0%. VIP tiers need both volume and ASTER holdings. Fee source: https://docs.asterdex.com/trading/perpetuals/fees-and-specs/fees. Referee benefit: 0%-10% of fees, depending on how the referrer splits the default 10% commission. Referrer reward: Default 10% commission (shared with the referee as the referrer chooses); approved affiliates 20% from referred VIP 1 users, 10% from VIP 2+. (source: https://docs.asterdex.com/program-and-rewards/referral-program). Our referral link: none (No referral code yet.). Restrictions: Services prohibited for those residing in, located in or incorporated in the United States, Canada, UK, China, North Korea, Russia, Ukraine, Cuba, Iran, Venezuela, Syria or comprehensively sanctioned jurisdictions. (https://docs.asterdex.com/resources/terms-and-conditions) 3. Hyperliquid - Tier 0 (14-day weighted volume up to $5M), perps, base rate: taker 0.045%, maker 0.015%. HYPE staking discounts 5%-40% not included. Spot and HIP-3 markets use different rates. Fee source: https://hyperliquid.gitbook.io/hyperliquid-docs/trading/fees. Referee benefit: 4% discount on trading fees for the referred user's first $25M of volume; not for vaults or sub-accounts. Referrer reward: 10% of referred user's fees, net of their discount, for their first $1B of volume. (source: https://hyperliquid.gitbook.io/hyperliquid-docs/referrals). Our referral link: none (Not active: Hyperliquid requires $10,000 of our own volume before a code can be created.). Restrictions: Interface not available to persons in the United States or Ontario (Canada), or in/citizens of sanctioned jurisdictions (Terms 1.6). (https://app.hyperliquid.xyz/terms) 4. dYdX - Tier 1 (30-day trailing volume under $1M): taker 0.05%, maker 0.01%. Docs show 5.0 bps taker / 1.0 bps maker and say the dYdX frontend fees page has the latest schedule; whether a fee-holiday promotion is currently active is unconfirmed. DYDX staking discounts not included. Fee source: https://docs.dydx.xyz/concepts/trading/rewards. Referee benefit: Referred users start at fee tier 3 (docs table: 4.0 bps taker / 0.5 bps maker). Referrer reward: 30% of referred users' taker fees (40% above $1M, 50% above $10M referred 30-day volume); $10k cap per referred user per 30 days. (source: https://help.dydx.trade/en/articles/240149-affiliate-program-faq). Our referral link: none (No referral link yet.). Restrictions: Frontends not available in the United States, Canada, United Kingdom or sanctioned countries, among others. (https://help.dydx.trade/en/articles/166970-geo-restrictions-site-access) 5. Drift - Unconfirmed: taker Unconfirmed (未確認), maker Unconfirmed (未確認). Unconfirmed: on 2026-11-03 Drift's docs URL redirected (HTTP 307) to docs.velocity.exchange, whose docs describe Velocity as a fork of Drift v2, not Drift itself. We could not find a current fee schedule for the Drift app on an official Drift page, so no Drift rate is shown. Fee source: https://docs.drift.trade/protocol/trading/trading-fees. Referee benefit: Unconfirmed Referrer reward: Unconfirmed. Our referral link: none (No referral link.). Restrictions: Unconfirmed (official terms could not be read on the check date). Page: https://moneytools.dev/fees/ · JSON: https://moneytools.dev/fees.json ## Referral program for agents: pay-precheck (20% of net revenue) Contains referral links: MoneyTools earns a commission when you sign up or pay through them. Not investment, financial or legal advice. Region restrictions apply (e.g. United States) - follow each venue's terms and your local law. Add ref= as a query parameter (or an X-Referrer header) to any paid call you route to one of the 6 paid endpoints: /v1/precheck, /v1/verify, /v1/recommend, /v1/sol-mint, /v1/read, /v1/email-check. Referrer accrues 20% of net revenue (amount received minus facilitator and gas fees) from referred paid calls that settle successfully on Base mainnet. Tracked off-chain (ref + ledger), settled monthly. Self-referral is not credited. Payouts are batched and sent manually in USDC on Base after owner review, minimum 1 USDC unpaid balance (smaller balances roll over); no automatic payouts. Check earnings (free): https://api.moneytools.dev/v1/referral/{address} Details: https://moneytools.dev/referral/ ## x402 Paid-Endpoint Liveness Index (free summary, paid full data) Which x402 pay-per-call endpoints from public catalogs (Coinbase Bazaar, PayAI, Dexter, Ultravioleta) answer a valid HTTP 402 right now: price, network, latency, uptime. Probed without paying, robots.txt respected, UA MoneyToolsIndexBot. Our own services are excluded. - Page: https://moneytools.dev/index/?src=llms - Free JSON (hourly; fastest, most reliable, cheapest, newly live, top hosts): https://moneytools.dev/index/summary.json - Paid full dataset ($0.005, x402 USDC on Base): https://moneytools.dev/index/v1/full?liveOnly=1&network=base - Paid one-endpoint probe history ($0.001): https://moneytools.dev/index/v1/lookup?url= (404 if not indexed, not charged) - MCP (free tool x402_liveness_top): https://moneytools.dev/index/mcp · llms: https://moneytools.dev/index/llms.txt ## Structured data - https://moneytools.dev/index.json - https://moneytools.dev/fees.json - https://moneytools.dev/openapi.json (OpenAPI for the JSON files above) - https://moneytools.dev/.well-known/agent.json (agent card) ## Guides (English; contain referral-link disclosure) - [Pre-check an x402 seller before your agent pays](https://moneytools.dev/guides/x402-precheck-before-paying/): read-only pay/no-pay gate using Pay-Precheck verdicts; Python code at https://moneytools.dev/guides/code/precheck_gate.py - [Pick the cheapest perp DEX with fees.json](https://moneytools.dev/guides/cheapest-perp-fees-json/): skip unconfirmed fees, flag region restrictions, compute taker cost; Python code at https://moneytools.dev/guides/code/cheapest_perp.py