MCP servers for Perplexity

x402 paid API tools for AI agents on Base: EU/global registries, crypto, wallet & agent trust.

Ethereum mainnet JSON-RPC paid per call in USDC on Base. No account, no API key: the wallet pays.

Express.js HTTP 402 payment middleware for AI agent micropayments

64 x402 tools: cheap LLM $0.002, web+news search, French residential-IP scraping, FR/UK/US data.

Discover x402 paid APIs and inspect fresh payment requirements before authorizing spend.

Free self-hosted x402 USDC billing for Cloudflare MCP servers, with a Base Sepolia test endpoint.

Pre-payment merchant trust checks for x402 agents on Base and Solana.

Pay-per-call OSINT for AI agents: username + email recon in USDC on Base via x402.

Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.

Authorize x402 payments before signing with request-bound, signed safety decisions.

Inspect and validate an x402 endpoint before an autonomous agent spends USDC.

Audits NEXUS's own x402 payment logs against its own delivery logs and issues a signed proof-of-deli

Rug-check & launch radar for trading agents: composite honeypot score, EVM+Solana, keyless x402.

Pay-per-call browser rendering and x402 marketplace ranking for AI agents, billed via USDC.

x402 paid API tools for AI agents on Solana: crypto safety, market data, KYB/AML verification.

Pay-per-call NLP & embeddings APIs on Base via x402. No keys/signup; agents pay per call in USDC.

Pay-per-call NLP & embeddings APIs on Base via x402. No keys/signup; agents pay per call in USDC.

Pay-per-call web & EU business intelligence for AI agents (x402 USDC on Base). 11 tools.

Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.

Issue and top up x402 virtual cards or buy Freeland travel eSIMs with Base USDC.

x402 image tools (USDC/Base): remove_background/upscale $0.02, resize/optimize $0.005; URL in/out