"Slack" matching MCP servers:

MCP server for Circle's Agent Stack. Create wallets, set spend policies, send USDC, and pay x402-priced endpoints — all from a tool call.

9-tool MCP server for the anchor-x402 commodity services: dual-chain hash anchoring (Base + Solana), OFAC sanctions screening, signed decision attestation, mainnet tx decode, ENS/SNS name resolution, USD spot price, EVM calldata decode, datetime parser, and bundled wallet intelligence. Agents pay $0.001–$0.010 USDC per call directly from a Base wallet via x402 — no API keys, no accounts.

AI-to-AI marketplace MCP server with 46 tools — swap 65+ crypto tokens on 7 chains, rent GPUs, trade 25 tokenized stocks, on-chain escrow (Solana + Base), DeFi yields, sentiment analysis, wallet monitoring, and image generation. Supports USDC payments across 14 blockchains.

Enables Claude to autonomously purchase business location data and pay for it with USDC on Base via x402, while enforcing per-call and per-session spending limits.

A comprehensive MCP server providing unified access to over 144 tools for lending, trading, and staking across six major DeFi protocols on the Stacks Bitcoin Layer 2. It enables AI agents to perform complex blockchain operations and interact with the DeFi ecosystem using natural language commands.