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4,816 Claude connectors and ChatGPT apps
Sales-And-Marketing
Omnisend MCP
By Omnisend
Get instant answers from your Omnisend data. Ask about campaign performance, automation drop-offs, and subscriber trends. Understand what's working and what to fix next, without touching a report.
Tools: 7
Data-Analytics
Omnivio Lens
By Omnivio
Omnivio Lens is a commerce intelligence layer for D2C brands. Connect Claude to your Omnivio account and ask questions about your business in plain English related to sales, returns, P&L, settlement reconciliation, inventory health, warehouse management, ads performance, and much more across Marketplaces like Amazon, Flipkart, quick commerce channels like Blinkit, Zepto & your own Shopify website — no SQL required. Learn more at omnivio.io.
Tools: 19
Education & Research
Omphalis
By Voxiven, LLC
Omphalis is the place where what you read, hear, and note begins to cohere. You save an article, and Omphalis shows its structure. You listen to a podcast on your commute, and Omphalis helps you come back to what mattered. You watch a two-hour talk, and Omphalis shows you the shape of it in seconds. You record a voice note at midnight, and Omphalis places it beside the article, talk, or paper that belongs with it. The paper you read last spring meets the book you are reading now, and your voice note from a walk last month sits beside both. What changed in the field, what changed in your understanding, what still holds: all part of the same library, still in reach, still connected. Not a pile that grows heavier. A place that gets clearer. It is for people who need what they consume to stay usable later — in writing, teaching, decision-making, research, or reflection — where understanding can compound over time. Omphalis is a companion for long content: a map for structure, a margin for meaning, and a way back to the moments that matter.
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Travel
On the Beach Holidays
By On the Beach Limited
Search for holidays like you're texting your mate. "Somewhere hot in Feb." "All Inclusive with a waterpark, early flights and good reviews." "A city break with great history and delish food." Whatever vibe you're after, On the Beach serves up package holidays that match - flights and hotel included, every package ATOL and ABTA protected, with flexible payment plans to spread the cost. Found one you love? Tap through to On the Beach to see full details and book.
Tools: 0 · Prompts: 3
Communication
OnMessage
By OnMessage
OnMessage is where a company's messaging strategy lives: its audiences, offerings, brand foundation, narrative, voice, and writing guidelines, all maintained as a single source of truth instead of scattered across decks and documents. This connector gives Claude live access to that Message Library. Instead of re-explaining the brand at the start of every conversation, Claude reads the approved strategy directly: who the audience is, what the offering actually does, which words the company uses and avoids. Then it writes from it. Anyone who connects can browse, read, and search the files their OnMessage role already lets them see. People whose role carries edit access also get write tools: creating and editing workflow files, storing documents like transcripts and research reports into the library where they become searchable, and updating structured brand strategy such as offerings, audiences, personas, and glossary terms. Every write is versioned and reversible in the app. Access mirrors OnMessage permissions exactly and is re-checked on every request, so the connector can never reach anything the same person could not reach while signed in. Agencies managing several client brands can list the organizations they have access to and switch between them, with the active brand named on every connection. Requires an OnMessage account on a paid plan or an active trial.
Tools: 29
Productivity
OnceHub
By OnceHub
OnceHub helps authenticated users manage their own scheduling workflows in ChatGPT, including finding upcoming meetings, retrieving booking links, generating one-time links, reviewing working hours, updating date-specific availability, canceling or rescheduling meetings, and marking confirmed meetings as no-show.
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Developer Tools
OneGate
By NEO GLOBAL RESOURCES
Use the bundled Skill and local JSON CLI to open a DApp at its original URL, inject a OneGate-compatible NEP-21 provider before page scripts, reuse one persistent development account for real signatures, and inspect browser state, console output, screenshots, and dAPI traces. Browser Mock is the currently implemented debugging target.
Prompts: 3
Data-Analytics
OneLens
By Astuto AI
OneLens connects your cloud-cost and FinOps data to Claude. Ask about spend in plain English and get real answers from your live OneLens analytics — no dashboards, no field names to memorize. Query across AWS, GCP, Azure, OCI and cross-cloud allocation views: list your cost sources and dimensions, break spend down by service, account, region, tag, or cost center, see top-N drivers, month-over-month deltas, and daily trends, and drill from account → service → region → SKU. Read-only and secure: you sign in with your OneLens account via OAuth; every query is scoped to your organization and honored by your existing entitlements. The connector stores no cost data and never logs cost values. Your OneLens admin controls who can use it and can revoke access instantly. Requires an active OneLens account with the MCP feature enabled.
Tools: 5
Productivity
OnePageCRM
By OnePageCRM
Turn Claude into your CRM assistant. It can summarize your Action Stream, do research, create new contacts, schedule follow-ups, rearrange overdue tasks, log notes after calls, update deals, and build simple dashboards. Let AI handle the admin while you build relationships, close deals, and focus on growing your business with OnePageCRM.
Tools: 6
Communication
OneSignal
By OneSignal
The OneSignal MCP server gives AI agents direct access to OneSignal’s customer engagement platform. Agents can explore users, segments, messages, templates, and analytics; answer product and campaign questions; troubleshoot delivery and engagement issues; generate insights; and help create personalized omnichannel messaging across push, email, SMS, RCS, in-app messaging, and Live Activities.
Tools: 29
Productivity
Onepage
By Onepage GmbH
Manage your Onepage websites from Claude using natural language. Create and edit websites, update content, change copy and layouts, manage media, settings, and control your online-presence through a simple conversation. Use Onepage to create new websites, manage existing, build custom sections, and ship updates faster without switching between tools.
Tools: 52
Productivity
Oneteam
By Oneteam
Oneteam's connector gives Claude native access to your Employee Experience Platform, so you can run and analyze your organisation through natural language. Every tool operates on one organisation you belong to. Organisations & people: List your organisations and their structure (communities, teams, function groups). Create communities, teams, and function groups in bulk. Invite new members by email and assign them to communities and function groups. Feed & messaging: Publish or schedule organisation messages to everyone or a targeted audience. Read the social feed and search it, and pull the comments and replies on any post to analyze how people responded. Academy & onboarding: Create academy courses with content and quiz modules, update modules and screens, and translate a course into other languages. List and inspect courses, read learner feedback, and track completion — starting, progressing, finished, and overdue — organisation-wide or per course, down to individual users. Documents: Browse every document folder as a flat, path-labelled list and create knowledge-base pages from Markdown or HTML. Reports & analytics: Query engagement metrics and user counts over time, per-community statistics, performance reviews, and survey results. A built-in reporting guide walks Claude through multi-step report flows so summaries stay accurate. Forms & surveys: List forms and surveys and read submissions, with answers resolved to human-readable values. Perfect for onboarding new hires, keeping frontline teams informed, spinning up training, and turning platform data into clear reports — all from the conversation.
Tools: 25
Productivity
Onplana
By Devsoft Solutions
Onplana is an AI-native project and portfolio management platform. This connector lets Claude work directly with your Onplana workspace. Read and write projects, tasks, subtasks and dependencies. Manage sprints, epics, milestones and the backlog. Track risks, issues and ideas as first-class records rather than notes. Log and approve timesheets, set resource capacity, and read budgets, rate cards and earned-value metrics. Draft and read workspace documents, wikis and pages. Search across everything in the workspace with hybrid keyword and semantic search. For organizations that run formal governance, the connector also covers the proposal pipeline with gate reviews, the change control board, portfolios, goals and OKRs, and the compliance audit trail. Onplana is built for teams migrating off Microsoft Project Online before its retirement, and imports native Microsoft Project files, Project Online, Planner and Project for the Web. Everything the connector does is scoped to one organization and to the permissions of the connected account. Destructive operations are disabled by default and an administrator must enable each one explicitly before an agent can call it.
Tools: 265
Other
Onsellr Marketplace
By Onsellr
Onsellr Marketplace helps people in Australia search, compare and research cars listed on Onsellr. Buyers can open listing details, check availability and, after signing in, request an enquiry, test drive, finance information, trade-in conversation or refundable holding deposit through Onsellr.
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Productivity
Onsite
By Onsite FM Pty Ltd
Connect Claude to Onsite so it knows your buildings as well as you do. Onsite is a building and strata management platform used across Australia and New Zealand.
Tools: 47
Financial-Services
Ontra
By Ontra
The Ontra MCP Server lets you query your Ontra data directly from Claude and other AI tools — no need to switch between applications. Ask questions about legal entities, ownership structures, funds, people, agreements, tax classifications, jurisdictions, and more. Results respect your existing Ontra permissions, so users only see data they already have access to. Setup takes about a minute via a quick OAuth flow with your Ontra credentials.
Tools: 5
Travel
Oojo
By Dyninno
OOJO is an online travel agency that helps users search, compare, and book travel services, primarily airline tickets, through a digital booking experience
Prompts: 1
Productivity
Open Context
By FOUND Studios LLC
Open Context lets you store, organize, and reuse context across your Al workflows. You can save profiles, documents, instructions, and other structured information In one place, then load exactly what you need into a conversation or tool when you need It. Instead of re-explaining background or copying the same prompts, you work from a shared, persistent source of truth. This helps keep conversations consistent, makes personalization easy, and enables workflows that rely on long-lived knowledge and memory.
Tools: 21
Productivity
Open Context
By FOUND Studios LLC
Open Context lets you store, organize, and reuse context across your AI workflows. You can save profiles, documents, instructions, and other structured information in one place, then load exactly what you need into a conversation or tool when you need it. Instead of re-explaining background or copying the same prompts, you work from a shared, persistent source of truth. This helps keep conversations consistent, makes personalization easy, and enables workflows that rely on long-lived knowledge and memory.
Prompts: 1
Data
Open Targets
By OpenTargets
This MCP provides a purpose-built interface and instructions to access and interpret the data and analyses in the Open Targets Platform. The Open Targets Platform is a comprehensive tool that supports systematic identification and prioritisation of potential therapeutic drug targets, integrating publicly available datasets to build and score target-disease associations. It also integrates relevant annotation information about targets, diseases/phenotypes, drugs, variants, GWAS and molecular QTL studies, and credible sets, as well as their most relevant relationships.
Tools: 5
Developer Tools
OpenAI Ads Conversions
By OpenAI
Use OpenAI Ads Conversions to guide Codex through adding or extending Measurement Pixel and optional Conversions API instrumentation in a repository, with local verification helpers and guidance for safe secret handling, deduplication, attribution context, and setup reporting.
Prompts: 1
OpenAI Certified
Learn practical AI skills inside ChatGPT and earn OpenAI Certified credentials.
Tools: 3 · Prompts: 0
Developer Tools
OpenAI Developers
By OpenAI
Use OpenAI Developers in Codex to build AI applications, agents, and ChatGPT Apps with OpenAI docs, the OpenAI API, Apps SDK, and Agents SDK. Connect to the OpenAI Platform (platform.openai.com) and see your Codex-built apps work right out of the box with real OpenAI API keys. Run and locally deploy Agents SDK projects through the Deployment Manager, scaffold ChatGPT Apps, and prepare ChatGPT Apps submission artifacts.
Prompts: 3
OpenAI Platform
Create an OpenAI API key after connecting Platform.
Tools: 0 · Prompts: 0
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