Mcp Rubber Duck

A Model Context Protocol server that provides time and timezone conversion capabilities. This server enables LLMs to get current time information and perform timezone conversions using IANA timezone names, with automatic system timezone detection.

One API for Search, Crawling, and Sitemaps

O(1) authority-based validation across seven domains (chemistry, physics, mathematics, statistics, computer science, biology, governance). Replaces O(n²) consensus coordination. Four-gate pipeline: RED, FLOOR, BROTHERS, GOD. MCP server included — connects to Claude Desktop and Claude Code in one command. pip install concordance-engine

PQS is the fastest way to get better output from any AI model. Score any prompt before it hits the model. Get a grade (A-F), score out of 80, percentile, and dimension breakdown across 8 quality dimensions. Built on PEEM, RAGAS, MT-Bench, G-Eval, and ROUGE frameworks. Pre-flight, not post-hoc. The AI input quality problem is real. PQS solves it. MCP Tools: - score_prompt: Free. Grade and percentile for any prompt. No API key needed. - optimize_prompt: $0.025 USDC. Returns optimized prompt with full dimension breakdown. - compare_models: $1.25 USDC. Side-by-side scoring across multiple models. HTTP API (x402-native on Base): - /api/score/free: Free. Grade and percentile, no payment required. - /api/score: $0.025 USDC. Single score, pay-per-call. - /api/score/full: $0.125 USDC. Grade, percentile, dimension breakdown, and rewrite. - /api/score/batch: $0.25 USDC. Score multiple prompts in a single call. - /api/score/compare: $1.25 USDC. Multi-model side-by-side scoring. - /api/preflight: $0.05 USDC. Lightweight pre-flight quality check. Paste a prompt. Get an optimized version. Ship better work. Cheaper than one bad prompt.

A Serper MCP Server

Official Model Context Protocol server for HumanTone. Humanize AI-generated text and check AI likelihood directly from Claude Desktop, Cursor, Cline, and other MCP clients.

Extract structured JSON from video, images, and PDFs using local LLMs (Ollama, LM Studio, oMLX) or via OpenRouter. Runs fully offline.

Search for pet-sitters across France. Find available pet-sitters near any French city with real-time pricing, reviews, distance and availability. Supports 6 service types (visits, dog walking, home-sitting day/night/full, professional boarding) and 43 animal types. Remote MCP server — Streamable HTTP transport, no API key required.

An MCP service designed for deploying HTML content to EdgeOne Pages and obtaining an accessible public URL.

scratchpad-mcp is an MCP server that gives AI agents persistent, token-efficient storage. It solves a specific waste problem: agents constantly re-read files they've already seen, re-summarize documents they've already processed, and re-load context they've already understood. Every one of those round-trips burns tokens for no new information. This server fixes that with eight tools designed around how agents actually work: Versioned writes. write_file automatically versions every write and keeps the 10 most recent versions per file. Storage is append-only on success and atomic on failure partial writes can't corrupt state. Structured diffs. read_file accepts a since_version parameter and returns a JSON line-diff against that prior version instead of the full content. Agents that have already seen v1 can ask "what changed in v3?" and get a small structured payload they can reason about, not the entire file again. Append-only logs. append_log and read_log give agents an event-stream they can replay. Cursor-based pagination (since_entry + last_entry_id + has_more) means an agent can checkpoint where it left off and resume cheaply. On-demand summaries. summarize_file calls Claude Haiku to summarize files over ~2000 estimated tokens. Summaries are cached per file version, so repeat calls on an unchanged file cost nothing. The threshold is enforced server-side you can't accidentally pay to summarize something small. Per-agent isolation. Every operation is scoped by an agent_id parameter, so one server instance can serve many agents without leaking state between them. Storage limits. 1 MB per file write, 64 KB per log entry, 1000 files / 100k log entries / 100 MB total per agent sane multi-tenant guardrails out of the box. Backed by a single SQLite file (Postgres migration is on the roadmap). All SQL is parameterized, paths are validated against a strict allowlist, and the security model is documented honestly it's safe for one-user-per-process deployments today, and the V2 plan derives agent_id from the caller's API key for true multi-tenancy. Build agents that remember what they've already seen.

MCP server for e-mail testing: create disposable inboxes, wait for delivery, and extract e-mail content or links - all from your AI agent or test automation workflow. Get a free API key on https://app.zyntra.app/

Real-time hosted MCP for Google Ads (63 tools), Search Console (16) and Meta Ads (14). Free.

Browser automation and web scraping

Lightweight MCP server for providing user prompts defined in Markdown with argument support.

Tells you how you and your Claude agent actually work together. Reads your CLAUDE.md, hooks, skills, memory, and scheduled tasks — then writes you a letter. Three core tools: collab (collaboration scoring + lint), security (secrets scan, prompt-injection surfaces, rule conflicts), and health (orphan jobs, overlap, structural drift). Local-only — no API keys, no data leaves your machine. Source: github.com/bleedmode/dearuser

MantleKit Launch Planner helps founders, freelancers, and agencies turn a plain-English SaaS idea into a launch-ready MantleKit setup plan. It recommends the best tier, theme, feature set, install path, and next steps using MantleKit’s real product structure, pricing, themes, and setup flow.

Coordination protocol for real-world tasks (cleaning, plumbing, painting, gardening, repair) in the Netherlands. AI agents create tasks via natural language through POST /do endpoint. AstraNL handles provider matching, transparent pricing, Stripe Connect escrow (99% to provider, 1% AstraNL fee), evidence chain, dispute resolution. Free first 3 tasks per agent. KvK 88449335, EU AI Act compliant. Supports 10 languages.

DevSpeak bridges the gap between product and engineering. Powered by Gemini AI, it instantly translates ambiguous stakeholder requirements into structured technical specs, Jira tickets, and API designs tailored to your specific tech stack and audience level.

The first artist MCP server. Lets AI agents (Claude, ChatGPT, etc.) discover, narrate, and stream Matthew Hartley's "The Time Is Now: A Journey in Chapters" — a continuous, multi-chapter listening experience spanning twelve songs from 1999 through 2026. Each song has emotional narrative, lyrics, story context, version recordings, and direct streaming links (Spotify, Apple Music, YouTube, SoundCloud). Each chapter has a numeral, year range, mood tags, and a banner image. The get_experience tool returns a fully curated, sequenced playlist for a listening mode — late_night, devotional, acoustic_focus, cinematic, quiet_listening, or full_journey — so an agent can build an immersive music+narration session in a single call. Per-song streaming is gated by release status; per-chapter narrative is gated by release. Powered by HarmonicWave — the platform for AI-native music experiences.

Real-time Swiss grocery shopping over MCP. Search products and compare prices across Migros, Coop, Aldi, Denner, and Lidl, see weekly promotions, and plan multi-store shopping trips with three optimisation strategies. Works with any MCP-compatible client (Claude Desktop, Claude Code, Cursor, Cline, Continue).

EZ Tools MCP Server는 Eric Zimmerman's Tools에서 제공되는 도구들을 Model Context Protocol (MCP) 서버 형태로 노출합니다. 이를 통해 Cursor, Claude Desktop 등 MCP 클라이언트에서 Windows Artifact(Prefetch, EventLog, Registry) 를 분석할 수 있습니다. (Eric Zimmerman's Tool의 특성상 Windows 환경에서만 사용 가능합니다.)

Plan Swiss train journeys from your AI assistant. Live SBB schedules with delays, prices in CHF with Halbtax / GA discounts, one-click booking on sbb.ch. Opens directly in the SBB Mobile app on phones.

A structured-document editor for AI agents. SuperDocs gives your AI 21 MCP tools and 4 workflow prompts to make section-precise edits — bold a specific paragraph, replace a single table cell, restructure a heading — without disturbing surrounding content. Tables, borders, alternating row shading, fonts, and inline styling all survive AI edits AND round-trip exports across .docx, PDF, HTML, Markdown, and RTF. Other capabilities: pre-signed URL upload/download (no context bloat for files >100KB), compact response mode for editing 100-page documents efficiently (~140× token reduction), multimodal vision on attachments, human-in-the-loop approval for sensitive edits, and multi-language editing across 16+ languages. Free plan: 500 ops/month, no credit card required.

MCP server for interacting with Neon Management API and databases