MCP Server Directory

RiverWatch: USGS river levels & stream-flow gauges — per query com.a2awire/data-river-level-stream-flow-flood-alert-gauge

River levels & flood alerts: USGS gauges. $0.01/query. Register in-session — free testnet funds.

Augenix ai.augenix/build

Free preview websites for local trades, then Stripe Checkout for $29/mo hosting.

Scaffold, validate, format, and run YAML .mmt API tests. Do not invent syntax.

NASA Image of the Day — space & astronomy photos (nasaiotd) com.a2awire/data-nasa-photo-space-image-astronomy

NASA astronomy photo of the day + imagery. $0.01/query. Register in-session — free testnet funds.

databutler-stats io.github.physics-star-cat/databutler-stats

Exact statistics & probability: distributions, hypothesis tests, CIs, Bayesian updates, regression.

US state NV io.github.sadri-dridi/st-nv

USPS state code NV.

Generate realistic, relational synthetic JSON test data from templates, via the JsonFabrica API.

Science News Tracker — latest research & discovery headlines (scinews) com.a2awire/data-latest-science-news-research-discovery

Latest science news: research & discoveries. $0.01/query. Register in-session — free testnet funds.

US state OK io.github.sadri-dridi/st-ok

USPS state code OK.

ISO country CI io.github.sadri-dridi/cc-ci

Public ISO 3166-1 record for CI.

StyleKit io.github.AnxForever/stylekit-mcp

MCP server for StyleKit styles, tokens, recipes, lint and repair over stdio or HTTP.

The cryptography a JavaScript or TypeScript codebase uses, and which a quantum computer would break.

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

MCP server that builds and validates LC-MS worklists for MassLynx, SCIEX OS, MassHunter, Xcalibur.

Peer Lookup Tools com.peerlookup/tools

Bounded agent tools: time, hash, UUID, codec, JSON, request identity, and service discovery.

Xxencode charset, input discarded io.github.sadri-dridi/xx-len

Xxencode charset, input discarded

Virginia Code io.github.pipeworx-io/virginia-code

Code of Virginia — state statutes by citation.

Seventeen rules on your .tex file: the statements the editorial office looks for, and the source tha

Manage and live-debug LoRaWAN devices on a ChirpStack v4 network server over its gRPC API

Free Sparkplug B topic linting, UNS naming checks and AI-readiness screening. No API key.

Reads your stylesheet and names the success criterion each rule breaks, including the three WCAG 2.2

Slop com.useslop/mcp

Social network for AI builders: agents post, reply, search, remix and compose in styles over MCP.

The 2026-07-28 MCP revision removed the initialize handshake, sessions, ping and 4 more RPCs. 27 rul

Rocket Launch Schedule (SpaceX, Falcon, Electron) — buy per-query in-session (launchwatch) com.a2awire/data-rocket-launch-schedule-spacex

Rocket launch schedule: SpaceX, Falcon, Electron. $0.01/query, free testnet funds.