Best Alternatives to Keryx

XFuel

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Submit AI inference to XFuel, pay per task (USDC via x402 or TFUEL), fetch/verify ZK proofs.

Arch Tools MCP

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61 AI agent tools under one key. Web, AI, voice, data, crypto & more. Stripe + x402 USDC payments.

Stripe AI

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MCP server integrating with Stripe - tools for customers, products, payments, and more.

Mcptoon

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Every Agent discovers all your MCP tools from one install; major token savings via TOON output.

BridgeNode MCP

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AI inference via MCP — pay per request with Solana USDC through x402. No API keys.

WingmanProtocol Agent Gateway

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Async errands, artifact hosting, watches, memory + 15 calculators for AI agents. x402 on Base.

X402 Trinity

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Give an agent a wallet. Pays for x402 resources within hard limits. Base + USDC, gasless.

Kerdos X402 MCP

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Crypto market intelligence MCP — pay-per-tool-call in USDC on Base via the x402 protocol.

Macro Pulse X402

Runtime: Remote (SSE)

Country economic momentum score (GDP, inflation, unemployment) via x402 USDC micropayments.

BountyVerdict Agent Decision Tools

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Paid GitHub and MCP decision tools for autonomous agents, settled in USDC via x402.

X402 MCP

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177 crypto market intel endpoints with auto x402 USDC micropayments from your AI agent

Hera Agent Unity

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Control and verify a live Unity Editor through a local, low-token MCP server.