MCP connectors for ChatGPT

Open Targets

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Explore drug-target associations and disease-gene evidence.

• Get Open Targets Graphql Schema: Retrieve the Open Targets Platform GraphQL schema filtered by category. You MUST specify one or more categories to retrieve the relevant schema subset. Categories grou
• Get Type Dependencies: Get schema subsets for types, separated by specific and shared deps. Given a list of type names, returns SDL (Schema Definition Language) organized into type-specific dependenci
• Search Entities: Search for entities across multiple types using the Open Targets Platform search API. This tool performs a streamlined entity search that returns the id and entity type for up to 3 ma

Open Task Relay

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Open Task Relay provides free, bounded public-good tasks that autonomous AI agents can discover, complete, submit, and independently verify.

• Audit Citations: Deduplicate DOI, arXiv and URL citations without fetching documents. No signup. Does not prove source independence.
• Validate Json: Validate JSON syntax and optionally format it. No signup. No schema validation or code execution.
• Register Agent: Register one agent and receive a one-time secret token. Persist it securely; subsequent writes require this bearer token. Do not repeatedly register.

OpenAccountants

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Open-source AI accounting skills verified by licensed accountants (tax, VAT, payroll).

openaccountants

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Open-source tax computation skills verified by licensed accountants.

• List Skills: List all published accounting skills with their verification status. Filter by jurisdiction (US, MT, DE, etc.) or category.
• Get Skill: Fetch a published skill by slug, including its current version markdown and verification summary.
• Get Skill Sections: Fetch parsed sections for a skill's current version. Each section has a heading and markdown content.

openaffiliate-mcp

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Search and discover affiliate programs with agent-ready data and commission details.

OpenAgenda

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Search, analyze and manage events on OpenAgenda.

Validate GPTBot and OAI-SearchBot IP addresses.

OpenAI Ads MCP

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OpenAI Ads MCP for ChatGPT Ads campaigns, creatives, audiences, insights, and conversions.

OpenAI Billing

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OpenAI organization usage and cost reporting through an admin API key connected by the user.

OpenAI Sora: Sora & Sora 2 (new social media like TikTok) API by ChatGPT creator OpenAI.

OpenAI Tools MCP Server

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Focused MCP server for OpenAI image/audio generation (v2.0.0).

Openaire

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OpenAIRE MCP — EU research outputs (publications, datasets, software, projects)

OpenAkashic

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Shared long-term memory vault for AI agents with 20 MCP tools.

openalex

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OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)

openalex-mcp-server

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Access the OpenAlex academic research catalog — 270M+ publications.

MCP server (stdio): lint OpenAPI specs with Spectral via the AgentForge API

OpenAPI version key shape, body discarded

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OpenAPI version key shape, body discarded

Openaq

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OpenAQ MCP — wraps OpenAQ v2 API (free, no auth required)

openaq-mcp-server

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Find air-quality stations and read pollutant observations from government monitors via OpenAQ v3.

OpenArx

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Open scientific and engineering knowledge for AI agents: search, evidence, document publishing.

openaso

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App Store Optimization for AI agents: keyword ranks, suggestions, popularity, competitors, reviews

Openbeautyfacts

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Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).

OpenBoss

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Public internet HP bar.

Opencages

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OpenCage forward + reverse geocoding (free key, 2500/day)

OpenCaseLaw — Swiss Caselaw, Statutes & Doctrine

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1M+ Swiss court decisions, statutes & doctrine with citation graph (DE/FR/IT).

Opencellid

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OpenCellID MCP — cell tower geolocation database (free with key)

OpenChainBench

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Live, neutral benchmarks for public RPC latency, oracles, bridges, perp DEX, and prediction markets.

Openchargemap

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Open Charge Map MCP — global EV charging station database (openchargemap.io).

openchargemap-mcp-server

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Find EV charging stations, detail, and reliability check-ins via the global Open Charge Map.

Opencitations

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OpenCitations COCI — open-license citation index by DOI