x402-protocol-integration

Highest-demand x402 services tagged 'derivatives': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 52 providers and 202 paying wallets measured in this tag.

Highest-demand x402 services tagged 'market-data': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 374 providers and 894 paying wallets measured in this tag.

Use when an agent needs the top x402 services tagged 'security'. Returns Highest-demand x402 services tagged 'security': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 132 providers and 213 paying wallets measured in this tag.

Highest-demand x402 services tagged 'usdc': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 88 providers and 284 paying wallets measured in this tag.

Highest-demand x402 services tagged 'weather': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 133 providers and 232 paying wallets measured in this tag.

Highest-demand x402 services tagged 'stocks': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 215 providers and 458 paying wallets measured in this tag.

x402 payment settlement test (0.01 USDC Base mainnet): verify your EIP-3009 sign -> settle path end to end

x402 MCP Tools: Generate a QR code (URL, text, vCard or WiFi) as a base64 PNG.

Exchange-native XRP perpetual funding, open interest, basis, venue disagreement and squeeze-risk evidence with explicit unavailable fields. Purpose: Measure XRP derivatives leverage and crowding without inventing liquidation data or uncalibrated probabilities. 5-minute freshness target; missing evidence is reported explicitly rather than invented.

Are these x402 endpoints safe to pay? Up to 10 endpoints in one call (?url=a&url=b): per endpoint go / caution / no_go, the recommended payment option and why, plus totals. For marketplaces and agents that weigh several services. Never pays the endpoints.

Highest-demand x402 services tagged 'onchain': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 165 providers and 235 paying wallets measured in this tag.

A paid sandbox for x402 clients. Pay $0.10 and receive your own settled payment back — payer address, amount, network and settlement transaction — so a test can assert your 402, sign, retry and settle loop works against a live facilitator. Scenario parameters exercise the failure paths for free: prove your max-price guard fires, that you abandon an expired quote, handle a rejected payment, and retry a failed settlement.

Highest-demand x402 services tagged 'compliance': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 184 providers and 278 paying wallets measured in this tag.

x402 agent due-diligence bundle (0.001 USDC): read-time machine-readable evidence for buyer authorization layers (OAP allowed_recipients) - on-chain re-verify of first-close settlement tx + live wallet balance + fresh 402 conformance probe + 6-surface identity persistence + machine-readable verdict (ADD_TO_ALLOWLIST/REVIEW)

Highest-demand x402 services tagged 'utility': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 64 providers and 271 paying wallets measured in this tag.

Highest-demand x402 services tagged 'research': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 129 providers and 449 paying wallets measured in this tag.

Check whether a Base wallet holds enough USDC to pay an x402 amount (default $0.001). Returns balance, can_pay, shortfall. The checklist agents run before spending. Try GET /can-pay/sample.

Web search: ranked results (title + url) for a query. ?q=x402+agent+payments&limit=8

Monexus Terminal API — Agentic-payments ecosystem brief: x402/MPP/USDC events with episode citations. Params: limit (<=50).

GSC's payment door — a real one-cent settlement on Base, signed receipt returned. Prove your agent's payment stack here.

Highest-demand x402 services tagged 'web': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 183 providers and 463 paying wallets measured in this tag.

x402 PayTo Pre-Flight: verify a payTo address against the live registry before paying. Detects payTo hijacking, stale endpoints and unknown resources. Deterministic, <200ms, no external network. 0.001 USDC via x402 on Base. SYNTHORA.

PipRail live x402 demo: pay $0.01 USDC on Base to unlock.

Compare x402 prices before you pay. Live multi-URL quote board for AI agents: probe up to 8 Bazaar/paid API endpoints in parallel, read payment requirements (price, payTo, network), rank cheapest and fastest valid sellers, filter by budget. Agent procurement and shopping for micropayments on Base. Does not pay candidates or settle to sellers. $0.01 USDC per sheet.