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13,465 Claude connectors and ChatGPT apps
Productivity
Calendera
By Calendera.org
Calendera answers questions about public and school holidays across Europe — 38 countries and their regions, in the languages each country publishes them in. Ask which days are public holidays in Bavaria next year, when the school holidays fall in Vaud, or where in Europe 3 October is a day off, and Claude answers from the dates the regions actually keep: school terms, days moved off a weekend and each region's own holidays included; town festivals that are nobody's day off left out. Where a country's regions keep different holidays — Germany, Switzerland, Spain, Italy and others — the answer says so and names the regions, rather than passing a national list off as anyone's year. Ask to see a year and it opens as a calendar in the conversation: public holidays, school holidays and bridge days marked, in the region's own language. Its leave planner shows how far a few days off go — click the days you would take, see how many days in a row they add up to, and share the plan into the conversation. The dates come from the OpenHolidays API (Open Database Licence), gov.uk (Open Government Licence) and the statutes of Cyprus, Denmark, Greece and Türkiye, republished by calendera.org and refreshed every morning. No account and no sign-in; every tool only reads.
Tools: 4
Sales-And-Marketing
Calendesk - Appointment scheduling software
By Calendesk
Calendesk is a booking and client-management platform for service businesses: salons, clinics, consultants, trainers, tutors. This connector turns Claude into your front desk. Ask what's on today's calendar, find a free slot next Monday, book a client, or pull this month's revenue - without opening the admin panel. What you can do: - List bookings for any day or range and check their details - Find open slots for a service, then create, reschedule, or cancel appointments - Search customers, review their booking history, add or update client records - Block time off for an employee (vacations, meetings, sick days) - Send email or SMS notifications to clients - Pull revenue, booking volume, cancellations, and other KPIs with prior-period comparisons The connector exposes 32 tools over the Model Context Protocol. Every tool carries read-only or destructive annotations, so Claude runs safe reads freely and asks before anything that writes. You sign in with your regular Calendesk login over OAuth 2.0 - no API keys to copy. Access follows your Calendesk role: an employee connecting their account sees exactly what they'd see in the panel, nothing more. If your email belongs to several companies, you pick which one to connect during sign-in. Works with every Calendesk plan, including the 14-day trial.
Tools: 34 · Prompts: 1
Productivity
Calendly
By Calendly
Schedule smarter with Calendly in Claude. Manage your entire scheduling workflow through simple conversation — create and update event types, share scheduling links, adjust availability, book meetings, and more, without ever leaving Claude.
Tools: 36 · Prompts: 2
Productivity
Calendrio
By Calendrio
Calendrio est un outil de prise de rendez-vous et de gestion de clientèle pour les professionnels indépendants. Ce connecteur permet à Claude d'agir pour le compte du professionnel qui l'a connecté : consulter ses prestations et ses horaires, voir les créneaux libres, simuler puis créer un rendez-vous, annuler un rendez-vous créé par Claude et garder des notes sur un client. Le professionnel garde le contrôle. Il choisit les permissions lors de la connexion (lecture seule toujours possible, création, annulation ou notes en option), peut exiger son accord avant chaque action, activer un mode essai qui ne fait que simuler, voir le journal des actions de Claude et les annuler en un clic depuis son profil.
Tools: 13
Healthcare
Caliber
By Caliber Fitness
Analyze your Caliber workouts, nutrition, body stats, personal records, and training plans directly from ChatGPT. Chart your progress, visualize trends, and get clear summaries of your fitness data.
Tools: 12
Productivity
CaliberMind
By CaliberMind
CaliberMind’s MCP for Claude brings your fully modeled GTM data — pipelines, CRM records, account journeys, and attribution — directly into Claude. All schema context and field relationships flow in automatically, so you can ask any revenue and GTM questions in plain English, run queries, and build dashboards in any environment. Because CaliberMind pre-wires every table relationship, Claude’s answers always match your CRM and GTM numbers exactly for ultimate context-aware revenue intelligence on-demand.
Tools: 8
Productivity
Calibro Sketch
By Calibro Software
Calibro Sketch is hand-drawn-style diagramming inside Confluence Cloud. This connector lets Claude draw for you: "draw the payments platform from this repository", "add the fraud service between checkout and the ledger", "what does the integrations diagram show?" — and the result is a real, editable Sketch in your Confluence space, not a picture. What you can do: • Draw a new diagram (services, data stores, queues and the flows between them) straight into a Confluence space • Change an existing diagram: Claude reads it, edits it and saves a new version, and refuses to overwrite someone else's save • Ask what a diagram shows, as components and relationships, without reading any JSON • Embed a diagram on a Confluence page you name, after you confirm the page • Find Sketches and spaces, and delete a Sketch you no longer need, with confirmation Because Claude does the drawing, a diagram can come straight from the codebase or conversation Claude is already working in. Every call runs as you, under your own Confluence permissions: Claude can do exactly what you could do in the editor, and nothing else. Calibro Sketch runs entirely on Atlassian's platform (Runs on Atlassian). The app stores and processes your diagrams only there. Requirements: Calibro Sketch installed on your Confluence Cloud site, and a site admin must turn on "Allow external MCP access" in Atlassian Administration.
Tools: 10
Productivity
Calibro Test
By Calibro Software
Calibro Test is test case management inside Jira Cloud. This connector lets Claude work with your test library directly — "write a test for CHK-212 from what we just built", "what tests cover this story?", "find the tests that have never been run" — without leaving the conversation. What you can do: • Create tests with steps and expected results, and link them to the Jira stories they cover • Find and read tests, with their steps, linked stories and recent results • Update a test's steps, priority, labels or folder • Organise the library: list and create folders, move tests between them • See which tests cover a story, how each last did, and the story's Test coverage verdict • Unlink or delete tests, with confirmation Every call runs as you, under your own Jira permissions: Claude can do exactly what you could do on the page, and nothing else. Recording a run stays a person's job; there is no tool for it on purpose, and only runs move a story's Test coverage field. Calibro Test runs entirely on Atlassian's platform (Runs on Atlassian). The app stores and processes your tests only there. Requirements: Calibro Test installed on your Jira Cloud site, and a site admin must turn on "Allow external MCP access" in Atlassian Administration.
Tools: 12
Productivity
Calibro Track
By Calibro Software
Calibro Track is time tracking, approval and reporting for Jira Cloud. This connector lets Claude work with your timesheet directly — "log two hours on the login bug", "what did I log this week?", "submit my week" — without leaving the conversation. What you can do: • Log time against Jira issues, or start and stop a timer as you work • List, edit and delete your own draft entries • Submit a week for approval • Approvers: see what's waiting, then approve or reject with a reason • Run reports: time by project, person, issue or any combination, or run a saved report Everything Claude writes lands as a draft on your own timesheet, under your own Jira account. Claude can't log time as anyone else, and approvers can only act on the projects they approve. Nothing goes into Jira's own work log. Calibro Track runs entirely on Atlassian's platform (Runs on Atlassian), so your time data never leaves Atlassian's cloud. Requirements: Calibro Track installed on your Jira Cloud site, and a site admin must turn on "Allow external MCP access" in Atlassian Admin Hub.
Tools: 17
Healthcare
Calio
By Murat Ahmet Kizil
Calio helps you find meal ideas from its published recipe catalog. Search by ingredients you have, meal type, calorie range, diet preference, or excluded ingredients, then get localized recipe details with estimated nutrition values. The app is anonymous, read-only, and does not access private Calio accounts, meal logs, goals, favorites, billing data, or user-specific collections. Calio provides general nutrition information only. It does not diagnose medical conditions, treat disease, provide medication guidance, or replace professional medical advice.
Tools: 3 · Prompts: 3
Legal
Call Desk by Modern Mustard Seed
By Modern Mustard Seed
Call Desk answers the questions a business should settle before a person or an AI voice agent picks up the phone. check_phone_number validates any +1 number, finds where it rings and every time zone its exchange covers, and grades toll-fraud risk: Caribbean +1 codes that bill as international calls, 900 premium numbers, Pacific territory and non-geographic codes. can_i_call_now applies the federal TCPA and FTC calling hours, every stricter state rule we verified, and the Canadian CRTC rules to a number or state at any time. It checks every possible time zone, holiday bans and rules with future start dates, then returns the verdict, the reason and the next allowed time. recording_consent_rules gives one-party or all-party consent for all 50 states, DC and Canada, and the rule for calls across state lines. ai_voice_disclosure_rules lists the FCC ruling that AI voices are artificial voices, federal identification rules, and state AI disclosure laws with effective dates. list_state_calling_rules shows everything for one jurisdiction. Every rule carries its statute, a verbatim quote, the official source and the date we read it. Anything we could not verify on a primary source is listed, never applied. No sign-in, no model, no network calls; area code data comes from NANPA. Informational, not legal advice.
Tools: 5
Productivity
Call Me
By Call Me
Call Me phones your verified number the moment an AI task finishes or gets blocked. It reads the update aloud, asks its questions, and captures your spoken reply — so you can direct the next step hands-free, without touching your desk. Built for founders, executives, consultants, salespeople, and anyone who runs their day on the go. How it works: verify your phone once, then tell Claude "call me when this is done." When it finishes (or hits a wall), your phone rings, the assistant reads what it did or where it's stuck, and you just talk back. Pro adds full back-and-forth conversations. Two tools: call_me (places a call with your summary, next steps, and questions, then captures your spoken reply) and get_call_result (fetches a call's status and transcript). It only ever rings your own verified number.
Tools: 8 · Prompts: 3
Sales-And-Marketing
CallRail
By CallRail
Give Claude access to your CallRail account, to analyze interaction data, manage your data and configuration, and know what marketing is working for you.
Tools: 39
Sales-And-Marketing
CallSys
By CallSys
CallSys is a Brazilian CRM and omnichannel contact-center platform (WhatsApp, webchat, social channels and telephony). This connector lets Claude work inside your CallSys account with the same permissions you have in the app: • Find customers and companies, and review leads, deals, pipelines, tasks and the activity history of each contact. • Manage your calendar: list, create, reschedule, complete or cancel appointments (Google Calendar sync only when you ask). • Supervisors: see the agents of the teams they supervise and per-agent performance (conversations, response times, deals won and lost, overdue tasks, calls). • Customer service: read conversations and messages, the waiting queue, approved WhatsApp templates, quick replies and dispositions. • With the optional customer-service write permission: send a WhatsApp message in an ongoing conversation (24-hour window) or an approved template, and claim, transfer, tag and close conversations. • Dashboards: sales, sales performance and customer-service indicators. Safety: each person signs in with their own CallSys user (OAuth, company MFA applies) and only ever sees their own company's data. Every write tool asks for approval in Claude; critical actions and every outbound message also require a server-side confirmation code (single use for messages) and are rate limited. Channel credentials, passwords and recording links are never returned.
Tools: 58
Productivity
Callabo
By Return Zero
Claude를 Callabo 계정에 연결해 접근 가능한 워크스페이스와 회의 데이터를 조회할 수 있습니다. 워크스페이스·팀·멤버, 회의 검색 및 상세 정보, 대화록 구간과 자막, 참석자, 라벨, 예정된 회의, AI 인사이트와 감사 로그를 확인할 수 있습니다. 제공되는 도구와 결과는 사용자의 활성 멤버십, 워크스페이스의 MCP 설정 및 Callabo 권한에 따라 달라집니다. 모든 도구는 조회 전용이며 Callabo 데이터를 생성·수정·삭제하지 않습니다.
Tools: 27
Productivity
Callimacus
By Callimacus
Callimacus is the platform that composes a website around whoever arrives: an ensemble of AI agents assembles each visitor's experience live from your content, products, knowledge and rules. Teams run it from the Studio and the CLI; this connector gives Claude the same operations, as you.
Tools: 3
Communication
Calmido
By Calmido B.V.
Look up who is behind a phone number in the Netherlands, Belgium or Luxembourg: community reports, spam and scam categories, a trust verdict and the registered business, from Calmido's phone directory. Use it when someone asks who called them, whether a number is safe, spam or a scam, or which company a number belongs to. Every answer links to the number's page with the evidence; a verdict describes the reported calls, not the person or business holding the number.
Tools: 1 · Prompts: 3
Healthcare
Calorie Tracker
By Dukkan LLC
Calorie Tracker AI helps you log meals, track calories, and understand your eating habits with minimal effort. Simply enter what you eat, and the app estimates calories and nutrients so you can stay aware of your daily intake without manual calculations.
Tools: 3 · Prompts: 1
Healthcare
Calorie Tracker Guide
By Wisery Pte. Ltd.
Calorie Tracker Guide helps you find the perfect calorie tracker for your specific needs. We have manually reviewed, tested, and verified over 120 apps, rating their features to ensure you get the best possible recommendations. Get personalized suggestions based on your unique goals, experience level, and specific requirements.
Tools: 1 · Prompts: 1
Healthcare
CalorieCam
By Wisery Pte. Ltd.
What if finding your ideal calorie target was just one message away? Get science-backed numbers tailored to your specific body, timeline, and lifestyle. Just tell me your goals or ask, "How many calories do I need to lose weight?" to generate your personalized nutrition plan. Turn that advice into action. Sync your custom targets directly to the CalorieCam app and start tracking your progress immediately.
Tools: 3 · Prompts: 3
Consumer-Health
CalorieGoals.app
By Rebrand Software, LLC
CalorieGoals is a calorie and nutrient food log. Connected to Claude, you can log what you eat conversationally instead of searching a database and tapping through portion pickers. Say "I had a bowl of oatmeal with blueberries" and it looks up the foods, picks sensible portions, and records them for you. Ask "how many calories do I have left today?" and it answers from your actual goal. Easily create reusable recipes and groups by asking Claude to parse a recipe url, and more. Make a mistake: Claude can easily remove a mistake but is limited only to food it added to the current day. The connection is read and write over your food, excercise and water log only. It cannot see your name, email, settings or billing details, cannot change your goals, and cannot delete your history. Connecting requires a CalorieGoals Premium subscription, which is available as a trial to all users with no credit card required, and can be purchased in the app or on the web.
Tools: 21
Consumer-Health
Calories Club
By Calories Club
Calories Club connects your private food and activity journal to Claude. Log meals, drinks, and workouts; review daily calories and nutrients; search saved entries; look up packaged foods by barcode; and track water and body weight. Connect your Calories Club account through OAuth to read and write your own data.
Tools: 10 · Prompts: 2
Productivity
Caly
By Devino Solutions
Caly is a scheduling tool: people book meetings with you on your event types, inside the working hours you set. The Caly connector lets Claude work with your calendar. It can read your event types and working hours, find your free time slots, list and open your bookings, book a meeting for someone (Caly sends the usual confirmation emails and calendar invites), move a booking to a new time, and cancel a booking after you confirm what will be cancelled. You sign in with OAuth and approve the connection on Caly's consent screen; the connection lasts at most 30 days before you sign in again. It works on every Caly plan, including Free.
Tools: 2
Productivity
CamScanner
By INTSIG PTE. LTD.
CamScanner for ChatGPT helps you bridge the gap between physical documents and digital intelligence seamlessly. Upload, scan, and identify text from any image; extract high-precision data with OCR for ChatGPT to analyze, summarize, or translate; and capture handwritten or printed content in a single click. You can also turn complex photos into structured text for instant AI processing. Ideal for students, professionals, and anyone who wants fast, reliable image-to-text solutions without opening another app.
Tools: 1 · Prompts: 1
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