Remote MCP servers

Opentopography

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OpenTopography global DEM rasters + point queries (free key)

Opentripmap

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OpenTripMap MCP — wraps the OpenTripMap Places API (dev.opentripmap.org)

openunfurl

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Zero-signup anonymous link-unfurl API.

openvan-travel

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Vanlife & RV travel data.

Openverse

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Openverse Creative-Commons image + audio search

Openweather

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OpenWeather MCP — wraps the OpenWeatherMap API (openweathermap.org)

OpenWebSearch

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Web search using free multi-engine search (NO API KEYS REQUIRED) — Supports Bing, Baidu, DuckDuckGo, Brave, Exa, Github, Juejin, and CSDN.

• Search: Search the web using multiple engines (e.g., Baidu, Bing, DuckDuckGo, CSDN, Exa, Brave, Juejin(掘金)) with no API key required
• FetchLinuxDoArticle: Fetch full article content from a linux.do post URL
• FetchCsdnArticle: Fetch full article content from a csdn post URL

openworkdays

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Zero-signup business-day date-math API: add days, count days between dates, is-business-day.

Operação de Transporte ANTT

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Look up a road freight transport operation registered with Brazil's ANTT by RNTRC and RENAVAM, confi

operant-mcp

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Read-only MCP server for the OPERANT AI operating-agent calibration benchmark.

Ophis MCP

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Gasless, MEV-protected onchain token swaps for AI agents on 14 EVM chains, built on CoW Protocol.

opplevagent-mcp

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Norwegian experiences marketplace MCP: activities by county, category, weather, season, group size.

OpsLevel

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Query your OpsLevel internal developer portal: catalog, maturity data, and tech docs.

optics-mcp

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Search Sunex lenses and imager sensors, match compatible optics, get pricing.

Option Desk

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Option analytics over the SYNTH sample or a permitted chain: Greeks, positioning, payoffs, plots.

optionality-mcp

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Optionality — AI-judged options trading drill, Tollbooth-monetized MCP server

Options Analysis Suite

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Options analytics: 17 pricing models, 17 Greeks, GEX, IV, 23 screeners, unusual, dark pool, max pain

optionsahoy-mcp

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Equity comp tax/trade optimizer: ISO/AMT exercise, NSO, RSU, QSBS, concentration, hedging.

OptionsBell Options Flow

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Unusual options activity on 7,000+ US stocks: top prints, streaks, IV rank, sentiment, sectors.

Opus Growth | Ad Operations for Google, Meta, Microsoft, TikTok and LinkedIn Ads

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Opus Growth turns Claude and ChatGPT into a full ad operator across Google Ads, Meta Ads, Microsoft Advertising, TikTok Ads and LinkedIn Ads, plus GA4, Search…

• Get Billing Status: Shows your current plan, remaining monthly operation quota, trial dates, and payment links.
• Connect Google Ads: Generates a one-time authorization link to connect a Google Ads account. Once the user clicks the link and approves with Google, the refresh token is stored encrypted.
• Create Trial Site: Creates a FREE trial website on a xxx.kriptap.com subdomain — no plan or payment needed. You get your own isolated server; then just tell me what website you want and I'll build the

Opus Growth, Ad Platforms MCP Connector

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Run Google, Meta, Microsoft, TikTok and LinkedIn Ads from Claude or ChatGPT.

OpusClip

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Turn long videos into AI-curated short clips: caption, reframe, thumbnail, schedule, and publish.

opuslog

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Repertoire & program archive for classical vocalists.

Deep security scans of repos you own from your editor: dependency CVEs, SAST, git-history secrets.

Opzyai Vibe Check

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Free, no-account URL security scan for apps built with AI tools like Cursor, Lovable, v0 and Bolt.

• Scan Url: Scan a live URL for leaked API keys, exposed config files and missing security headers. Returns a Launch Readiness score (0-100) and a paste-ready fix for each finding. Use before deploying,

Oqmd

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OQMD (Open Quantum Materials Database) MCP.

ORA · ORUM

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Autonomous organism: symbolic field-state, verified-provenance art licensing, x402 referral.

Oracle-H

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Secure critical actions by requiring real-time human approval via Telegram before execution.

• Oracle Validate: Submit a critical or irreversible action to ORACLE-H for human approval before executing it. The human operator receives a Telegram notification with full context (action, rationale,
• Oracle Poll Status: Check the current status of a validation request previously submitted via oracle_validate. Poll every 10-15 seconds until status is 'approved' or 'rejected'. If 'expired', the huma

oral-heritage-index

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Authoritative cited answers about saving family stories.

Orb Platform

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162K English words, 74K lessons, knowledge graph, semantic reverse-dictionary search.