MCP Server Directory

json-schema-validator io.github.ryuamarines/json-schema-validator

Validates JSON against a JSON Schema, lists violations. x402 payment required (testnet USDC).

Loc8ID com.loc8id/mcp

Turn a GPS coordinate into a shareable short link and QR code, as your own signed-in account.

inventory com.oceanbuilders/inventory

Search Ocean Builders' floating-home inventory, get unit specs and pricing, register buyer interest.

HVAC Builder app.hvacbuilder/hvac-builder

Design, solve and simulate HVAC systems from real components, weather years and buildings.

Lazyweb com.lazyweb/lazyweb

Real product evidence: 281k+ real app screens and flows, 20k+ mobile A/B tests, growth reports.

Deployment-readiness checks for document-QA and extraction AI: grounding, extraction, CI gate.

Tokens and cost for Claude Code, Codex and 14 more AI coding agents, from local session files.

19 offline checks on the SPF, DMARC and DKIM records in your branch — including the DMARC rewrite of

MCP policy proxy: enforces a code of conduct across connectors before the upstream is called.

Microsoft Windows Security Updates (MSRC CVRF) — buy per-query in-session (msrcwatch) com.a2awire/data-windows-security-update-microsoft-cvrf

MSRC Windows updates: CVE rollups, Patch Tuesday. Register in-session — free testnet funds.

Exploit-DB New Exploits & Proof-of-Concepts — buy per-query in-session (exploitdb) com.a2awire/data-exploit-db-exploit-database-proof-of-concept

Exploit-DB: new public exploits & PoCs, daily. Register in-session — free testnet funds.

Build, test and run iOS apps on a remote Mac from any machine. XcodeBuildMCP-compatible tools.

text-slugifier io.github.ryuamarines/text-slugifier

Converts text titles into URL-safe slugs and flags duplicates. x402 payment required (testnet USDC).

New Research Papers & Science Breakthroughs — buy per-query in-session (scibreak) com.a2awire/data-science-breakthrough-new-research-papers

Science breakthroughs: new research papers. $0.01/query. Register in-session — free testnet funds.

Immensity io.github.CodingWithJoseph/immensity

Discover software problems, analyze evidence, and create implementation-ready Build plans.

ScriptHaul com.scripthaul/transcripts

Free YouTube transcripts, no API key: videos, channel lists, latest uploads, bulk download links.

x402 HTTP 402 + MCP paywall: charge USDC per agent call. Self-host via npx or Docker.

Attest agent decisions and verify records on a public ledger. Evidence, not just data.

Bucky com.buckybuild/bucky

Zoning, parcel, and development feasibility for a street address in Canada and the US.

stdio MCP server for StyleKit styles, templates, assets, tokens, recipes, and lint checks.

barcode-qr-code-sepa-payment-ean13 io.github.theluckystrike/barcode-qr-code-sepa-payment-ean13

QR codes and barcodes offline: WiFi, vCards, SEPA payment codes, Code 128, EAN-13, SVG or PNG.

YouGame co.yougame/yougame

Publish a browser game on YouGame: the build rules, the leaderboard SDK, pre-upload checks.

Robutler ai.robutler/robutler

Build, remix, and run apps with agents on Robutler. Search, delegate, post, chat, manage channels.

GridHub Electricity Market Data io.github.jalcodev/gridhub

Live and historical electricity prices and demand for 25 grids; carbon intensity for GB.