MCP Server Directory

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.

Clink Forge com.clinkforge/clink-forge

Pay-per-call government data over x402: provenance chains, Ed25519 attestations, no API keys.

Lazyweb com.lazyweb/lazyweb

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

GS1 element strings, DataMatrix, eight keys, ITF-14 print specs and price-embedded in-store codes.

New LLM Release Tracker — buy per-query in-session (llmwatch) com.a2awire/data-llm-release-model-availability-tracker

LLM releases: new models, availability, context. Register in-session — free testnet funds.

M2M Sentinel io.github.M2M-Sentinel/m2m-sentinel-sdk

Base bytecode capability observations, proxy resolution, gas, DEX, and transfer telemetry.

skillmd com.skillmd/skillmd

Search, fetch, lint, and install Agent Skills (SKILL.md) from the SkillMD registry.

roastify-mcp io.github.lonniev/roastify-mcp

Roastify Developer API MCP Service — Tollbooth DPYC monetization

Bounded, source-write-free Rust correctness tools grounded in Cargo and rustc output.

Attestwire com.attestwire/en16931

EN 16931: validate invoice data, UBL/CII or PDF; emit XRechnung/Peppol XML, never a PDF.

Multi-LLM dev harness, MCP-operable: bugs, cycles, gates. Verdicts are exit codes, never opinions.

Riddle com.riddle/creator

Build, publish and analyze quizzes, polls, forms and personality tests. Riddle account required.

Look up on-chain Attribution reputation scores for wallets and AI agents on Base.

HVAC Builder app.hvacbuilder/hvac-builder

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

Cut LLM agent token use in Claude Code, Cursor, Codex, Gemini CLI. Local, no API key. gAI Ventures.

flightclaw com.flightclaw/flightclaw

Search ~300 airlines and book flights with a checkout link. OAuth sign-in by email code.

Agentboxd com.agentboxd/mcp

Real email inboxes for AI agents: create addresses, send, wait for mail and verification codes.

Deployment truth verification for AI agents. Verifies the live site matches the build.

Pin visual feedback on any live web page and send it to Claude Code, Cursor or your AI agent.

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.

Trigger.dev MCP by usefulapi io.usefulapi/trigger-dev

Debug background jobs — runs, traces, spans, schedules, queues and deployments.

Structura tools.structura/structura

Design domain models and generate deterministic multi-stack code, driven by your coding agent.

GRAFOMEM CGR Read com.grafomem/cgr-read

Read Foundation-signed, offline-verifiable CGR agent-reputation attestations. No install.