MCP Server Directory

nexus0-agent-rail io.github.MikeHunt69702/agent-gateway

Pay-per-call DNS/TLS truth and npm/PyPI breakage checks via x402. No account or API key.

Tantra Authority Catalog com.tantra-authority/catalog

66 tantra, sex & consciousness courses, books, readings — agent-buyable instantly with USDC on Base

MCP server for Yandex Audience API: segments (CRM, lookalike, pixel), pixels, grants.

Hosted MCP endpoint: 46 tools free (rate-limited) + 31 REST routes pay-per-call via x402.

Merged agent permission rules: which settings file wins, and which rules your client ignores.

Local-first memory brain for AI coding agents: hooks capture sessions, beliefs injected per prompt.

usdi-mcp-server io.github.MikeAshtonEILLC/usdi-mcp-server

Live tools for USDi: CPI-indexed exchange rate, contract/pool addresses, and mint/redeem mechanics.

Google Trends API ai.trendsapi/google-trends

Google Trends search interest over time with growth metrics. Free key at trendsapi.ai

mcp stdio server exposing mossgate trust and rue render apis with x402 usdc payment

x402 Merchant Check com.gradientdecisions/merchant-check

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

Us Gov Contracts io.github.pipeworx-io/us-gov-contracts

US Government Contracts MCP — awarded state & local government contracts,

Open Contracting io.github.pipeworx-io/open-contracting

Open Contracting MCP — international public procurement: government tenders

25 pay-per-call UK data & verification tools for AI agents. x402 USDC on Base; free quote mode.

x402 Web Extract io.github.Senpi-Station/x402-web-extract

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

Drive terminal coding agents by voice, with receipts that never claim more than they proved.

KeepFlash Agent Access io.github.dante-is-shipping/keepflash-agent-access

Search, read, cite, create, and safely update a user's private KeepFlash knowledge library.

Full-text search, browse, and resume across your coding agent sessions (Claude Code, Codex, Amp)

Pexafy com.pexafy/pexafy-mcp

Find free-to-use stock photos by words, by image or by similarity; every result names its licence.

CalvingWatch Public Knowledge com.calvingwatch/public-knowledge

Read-only CalvingWatch product, tester, camera, privacy and safety facts; no customer data.

Nomad Stays io.github.nomadstays/mcp-server

Search remote-work accommodations worldwide; Trusted Stay Partners can manage their own listings.

companies global.rootz.companies/companies

Verify a US company: officers, agents, motor carriers. Flags when our status disagrees with state.

Memory your agent can trust — every answer carries its source; when it doesn't know, it says so.

Local agent wallet + 900 pay-per-call data APIs — free discovery, x402 USDC, code-level spend caps

MCP Assist — Coordination Memory io.github.aliomraniH/mcp-assist-memory

Coordination memory with verification: reconcile-against-GitHub, verdict freshness, provenance.