MCP Server Directory

Persistent, evidence-backed code graph for coding agents.

Reports real token usage and cost from Claude Code and OpenCode data. Nothing leaves your machine.

Word tools for AI agents: read/write, decompile to F#/C#/XML/JSON, or build from XML/JSON.

Deterministic eligibility decisions and test-driven rule authoring via the Aethis developer API.

Test management over MCP: author cases, run manual executions, cut releases, read health

Local-first MCP server for data-quality discovery, evidence, drift, and controlled repair.

Code graph MCP server for AI agents: 81 languages, 87 frameworks, 90.6% fewer PR-review tokens

Robots.txt Policy Lint dev.workers.pathwren.www/robots-policy-lint

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

GodPrompt workflows for TDD, debugging, verification, task routing, and progressive disclosure.

HVAC Builder app.hvacbuilder/hvac-builder

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

mcprush.com - Catalogue MCP com.mcprush/catalogue

Marketplace of MCP servers and agent skills, free and paid, where developers publish and monetise.

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

MCP Endpoint Lint - handshake, tool schemas, JSON-RPC errors dev.workers.pathwren.www/mcp-endpoint-lint

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

Slop com.useslop/mcp

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

Space Weather (Kp Index, Solar Flares) — buy per-query in-session (spaceweather) com.a2awire/data-space-weather-kp-index-solar-flare

Space weather: Kp index, solar flare flux, alerts. $0.01/query, free testnet funds.

Look up, search, and track changes to the US Code of Federal Regulations (eCFR).

Fieldstub com.fieldstub/fieldstub

Capture extra work on a jobsite and file it into Procore as a Change Event on real budget codes.

AISkills402 com.aiskills402/mcp

Humanize AI-written English. Facts and length kept. Paid per successful run over x402 (testnet).

Build, validate, and describe TTEOP telemetry envelopes for AI operator token efficiency.

docbin app.docbin/docbin

Give an agent a place to put large output. Build logs and reports get a stable versioned URL.

PermitReporter — US Building Permit Intelligence com.permitreporter/us-building-permits

Source-linked building-permit search across 34 US states and DC, with county-level coverage.

url-normalizer io.github.ryuamarines/url-normalizer

Normalizes and deduplicates a list of URLs. x402 payment required (testnet USDC, Base Sepolia).

email-extractor io.github.ryuamarines/email-extractor

Extracts emails from texts. x402 payment required (testnet USDC).

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

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