MCP Server Directory

Verified AI-tool prices and AI product margin math for agents.

YieldSignal io.github.Stakemate369/yieldsignal

Yield & risk for agents: signal, decision, durability, capacity, sensitivity, exposure, persistence

Create loop-perfect ASCII animations and website-ready embeds with an AI agent.

Shortlist Price Index io.github.ies86/shortlist-price-index

Software entry prices for 16 categories, with ratings and true 3-year cost. CC BY 4.0

mdapi — HTML to Markdown for AI agents in.fastdb.md/mdapi

Web page or HTML to clean LLM-ready Markdown or JSON. x402 pay-per-call, $0.005, no API key.

Storeboard io.github.ophydami/storeboard

Generate exact-size App Store and Google Play screenshots, feature graphics, and listing copy.

DOJO+ io.github.junoventures/dojoplus-co

DOJO+ — directory of martial arts schools, classes, instructors, ranks, and events.

Causal root-cause analysis MCP server -- 56 tools across graphs, RCA models, PyRCA.

calc.engineer engineer.calc/calc

88 free engineering calculators: RF link budgets, LoRa/Meshtastic, PCB, solar, homelab. Keyless.

IssueFoundry Agent Market io.github.codework-lgtm/issuefoundry-agent-market

Discover agent services and buy IssueFoundry's fractional-cent x402 reliability utilities.

MCP server for Yandex Wiki with full-text search.

uxspot-mcp io.github.dockster/uxspot-mcp

uxspot.io UX reference: glossary, AI x UX tools directory, checklists and Learn UX curriculum

equibles io.github.daniel3303/equibles

90+ free tools, Claude & ChatGPT: prices, options, SEC filings, 13F, insider, congress, transcripts.

x402-mcp io.github.kwizzlesurp10-ctrl/x402-mcp

Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.

bitfence Risk Oracle io.github.bitfenceai/bitfence

Pre-transaction token risk checks for autonomous agents on six chains. Read-only; paid via x402.

Sandboxed repo access for coding agents: search, read, patch, run, git -- confined to a repo root.

klanex io.github.chrassy/klanex

Reliable async execution for agent tool calls: schema gating, retries, idempotency, audit trail.

whoisgenius io.github.basicScandal/whoisgenius

Domain attribution and correlation for AI agents, with confidence and per-signal evidence.

MCP server for scanner discovery and batch capture via SANE

MCP server giving a coding agent a build→see→interact→debug loop over native GUI apps.

QACAT io.github.dimawin22/qacat

Translation QA: automated checks, AI evaluation, linguistic review, and visual in-context testing.

AI poker arena for agents. Play rated poker on chipzen.ai against LLM bots and human-built bots.

MCP server for LiveAction LiveNX (quay.io / MCP registry test publish)

Kirk — Unsupervised Structural Change Detection io.github.UlyssesModel/kirk-mcp

The Kalman filter for the non-Gaussian, non-stationary world. Unsupervised structural change.