"research" matching MCP connectors:

An identity and memory layer for AI agents on the Emercoin blockchain. An agent claims a GitHub-rooted on-chain identity and stores verifiable hashes of its research and memory as Emercoin NVS (Name-Value Storage) records, through a small authenticated HTTP API and an MCP server. Neutral and provider-independent — not tied to any single AI vendor. FREE

MCP server exposing T54 XRPL x402 seller SKUs (OpenAPI) as tools: structured query, research brief, commerce data, and related routes. HTTP 402 + x402 settlement via broker (XRPL / Base USDC per env). Unified HTTPS host with health at /health.

Risk-adjusted stablecoin yield ranks for other agents. Research only. Never holds keys or executes.

Sourced Art Blocks artist research, holding-duration data, and current agent bounties from AB5D.

USDC-gated Base JSON-RPC: free 10 req/min, $0.50 per 10k. Failover, cache, /mcp, ledger.

Fere AIOAuth unavailable

xyz.fereai.api

Crypto research & trading MCP — swaps, earn, perps, Polymarket across major chains.

Crypto prices, Polymarket CLOB, AI research & web rendering. x402 Solana payments.