Contacts
Workflows using this tag
Omnisend Create and Send Campaign · Omnisend
Omnisend Create and Verify Contact · Omnisend
Omnisend Create and Verify Product Category · Omnisend
Omnisend Copy and Send Campaign · Omnisend
Omnisend Update Product Category · Omnisend
Omnisend Create and Tag Contact · Omnisend
Omnisend Create and Verify Product · Omnisend
Omnisend Refresh Product Catalog Entry · Omnisend
Business capabilities this tag reaches
Customer Relationship Management 106
Customer Service Management 1
Human Capital Management 1
Medical Staff & Credentialing Management 1
Providers using this tag (54)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 6 Complete, well-documented, and agent-ready
Strong 16 Solid coverage with minor gaps
Developing 14 Usable, with meaningful gaps to close
Thin 8 Limited public surface area
Emerging 5 Early or largely undocumented
APIs with this tag (309)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 42 Complete, well-documented, and agent-ready
Nylas Contacts APIContacts. Read, create, update and delete a grant's contacts and contact groups.Salesforce Contacts APIOperations for listing, retrieving, and deleting Marketing Cloud contact records.SendGrid Contacts APITwilio SendGrid Marketing Campaigns Contacts APIbrevo Contacts APICreate, retrieve, update, and delete individual contacts.Mailchimp Contacts APIThe contacts API from Mailchimp — 6 operation(s) for contacts.Zoho CRM Contacts APIThe Contacts API from Zoho CRM — 4 operation(s) for contacts.Cvent Contacts APIA contact is a record in your account’s address book that represents an individual. The data stored within ...Cvent REST APIThe unified Cvent Platform REST API providing programmatic access to events, contacts, registrations, atten...Cvent SOAP API (Legacy)The Cvent SOAP API is the original legacy API for pushing and pulling data between Cvent and internal syste...Twilio Contacts APIManage marketing contactsActiveCampaign Contacts APIThe Contacts API from ActiveCampaign — 28 operation(s) for contacts.Elation Health Contacts APIThe Contacts API from Elation Health — 8 operation(s) for contacts.Contacts APIREST API for creating, reading, updating, and deleting contacts in Marketing Cloud.Salesforce Marketing Cloud Contacts APICreate, retrieve, update, and delete contacts in Marketing Cloud. Contacts represent individuals who intera...Cvent Registration Contacts APIContact/address bookCvent Registration REST APIThe Cvent Registration REST API is the registration surface of the unified Cvent Platform REST API. It allo...Microsoft Azure Contacts APIThe Contacts API from Microsoft Azure — 2 operation(s) for contacts.Close Contacts APIThe contacts API from Close — 2 operation(s) for contacts.Plunk Contacts APIManage contacts and their subscription state.lemlist Contacts APICRM-side contacts, contact lists, list membership and exports.Omnisend Contacts APIThe Contacts API from Omnisend — 7 operation(s) for contacts. Version 2026-03-15, harvested from Omnisend's...Zendesk Sell Contacts APIThe Zendesk Sell Contacts API provides a simple interface to manage your contacts. A contact represents an ...Cvent Event Cloud Contacts APIContact/address bookCvent Platform REST API (Event Cloud)RESTful API for managing events, contacts, registrations, attendees, sessions, speakers, exhibitors, survey...GetResponse Contacts APIAPI documentation for contacts and their properties (e.g., tags, custom fields)Impact Contacts APIThe Contacts API from Impact — 2 operation(s) for contacts.Loops Contacts APICreate, update, find and delete contacts, and manage suppression status. 6 operation(s) in the Loops REST A...Avalara Contacts APIManage company contactsMicrosoft Dynamics 365 Sales Contacts APIContact (person) recordsOracle Siebel Contacts APIOperations on Contact business objects representing individual people associated with accounts and organiza...Google People APIThe Google People API provides access to information about profiles and contacts, allowing applications to ...UserGems Contacts APIAdd and remove contacts UserGems should track for job changes.Squarespace Contacts APIManage customer contacts and address book entries for a website: create, read, update, delete, and query co...Docusign Contacts APIThe Contacts resource provides methods that allow you to manage contacts.SendPulse Contacts APIThe Contacts API from SendPulse — 51 operation(s) for contacts.Constant Contact Contacts APIEndpoints and methods to get, create, delete, and update one or more contacts.Lightfield Contacts APIThe Contacts API from Lightfield — 3 operation(s) for contacts.Microsoft Contacts APIManage contactsProgress Software Contacts APIThe Contacts API from Progress Software — 2 operation(s) for contacts.Sinch Contacts APIManage contacts and their channel identities. Contacts group together underlying connected channel recipien...Common Room Contacts APIThe Contacts API from Common Room — 6 operation(s) for contacts.Seamless.AI Public APIThe Seamless.AI Public API v1 — nine operations covering contact and company search, asynchronous enrichmen...
Strong 73 Solid coverage with minor gaps
HighLevel Contacts APIDocumentation for Contacts APISimon Data Contacts APIContact profile lookup.D&B Direct+ Search APIThe Search surface of D&B Direct+ lets applications find businesses, principals, and related entities using...Booking.com Contacts APIThe Connectivity Contacts endpoint manages the contact records attached to a property on Booking.com, letti...Cvent Hospitality Cloud Contacts APIA contact is a record in your account’s address book that represents an individual. The data stored within ...Erxes GraphQL APIGraphQL Federation API powering the erxes XOS platform. An Apollo Router gateway federates one subgraph per...Givebutter Contacts APIThe Contacts API from Givebutter — 6 operation(s) for contacts. Split by tag from Givebutter's own publishe...Kiteworks Contacts APIThe contacts API from Kiteworks — 2 operation(s) for contacts.Apollo.io Contacts APIWorkspace CRM contacts — create, update, search, stages and ownership. 10 operation(s) from the published A...Zoho Contacts APIThe Contacts API from Zoho — 4 operation(s) for contacts.AlphaLoops FMCSA Carrier Data API Contacts APIThe Contacts API from AlphaLoops FMCSA Carrier Data API — 2 operation(s) for contacts.Inflection.io Contacts APIThe Contacts API from Inflection.io — 6 operation(s) for contacts.Mailmodo Contacts APIAdd, remove, archive, unsubscribe, resubscribe, and look up contactsOntraport REST APIRESTful API providing CRUD access to contacts, transactions, tags, sequences, forms, landing pages, and eco...Vessel Contacts APIThe contacts API from Vessel — 5 operation(s) for contacts.Keap Contacts APIKeap Contact API — 27 operations across 16 paths on the Keap REST v2 contract, read from Keap's own publish...GetAccept Contacts APIEverything related to contactsFactset Contacts APIThe Contacts API from Factset — 8 operation(s) for contacts.Lev Contacts APIThe Contacts API from Lev — 5 operation(s) for contacts.SolarWinds Contacts APIManage alert contactsKnak Contacts APICreate, retrieve and list contacts in Knak Send.Sendlane Contacts APIThe Contacts API from Sendlane — 18 operation(s) for contacts.Apollo API ContactsCreate, update, and search the people your team saves in Apollo. Harvested from the Apollo-published OpenAP...Cisco Umbrella Contacts APIThe Contacts API from Cisco Umbrella — 2 operation(s) for contacts.The Mobile First Company Contacts APISearch and retrieve contact information with sorting and pagination. Includes engagement level tracking.AskNicely Contacts APIImport, look up, deactivate and privacy-delete contacts.Outlook Contacts APIAccess to Outlook personal contacts for managing contact information, creating contact folders, and organiz...Soldo Software and Services Contacts APIThe Contacts API from Soldo Software and Services — 2 operation(s) for contacts.NationBuilder Contacts APIContacts are logged interactions between people in your nation. More information about contacts and the fie...Payrix Contacts APIA contact reflects a known, valid individual registered as a contact for the entity. It is purely informati...Spruce Health Contacts APIThe Contacts API from Spruce Health — 6 operation(s) for contacts.Entergram Contacts APIWorkspace contacts deduplicated across connected accounts, including shared groups and attribution.LeafLink Contacts APIThe contacts API from LeafLink — 4 operation(s) for contacts.Smartlead Leads APIEndpoints to add leads to a campaign in bulk, fetch leads, update lead status (interested, replied, unsubsc...Salesflare Contacts APIThe Contacts API from Salesflare — 2 operation(s) for contacts.Solvimon Contacts APIThe contacts API from Solvimon — 2 operation(s) for contacts.People APIRead and manage the authenticated user contacts and profiles, and search the directory.Zendesk Sell (Sales CRM) APIOAuth 2.0-authenticated REST API for managing leads, contacts, deals, accounts, notes, tasks, calls, source...Zendesk Sell Contacts APIIndividual people and organizations.Zavu Contacts APIThe Contacts API from Zavu — 8 operation(s) for contacts.Silverpop Contacts APIContact (recipient) list managementSynthflow Contacts APIThe contacts API from Synthflow — 2 operation(s) for contacts.Amazon Web Services Contacts APIThe Contacts API from Amazon Web Services — 3 operation(s) for contacts.Kaseya Contacts APIThe Contacts API from Kaseya — 13 operation(s) for contacts.Dotdigital Contacts APIThe Contacts API from Dotdigital — 6 operation(s) for contacts.Shop-Ware Contacts APIThe Contacts API from Shop-Ware — 2 operation(s) for contacts.Amazon Ground Station Contacts APIThe Contacts API from Amazon Ground Station — 1 operation(s) for contacts.Kartra APIKartra's inbound developer API. One endpoint, POST only, form-encoded, with the operation selected by `acti...Weave Contacts APIPatient/customer contacts and contact info.Apideck Contacts APIThe Contact resource represents individuals, including details such as name, contact information, associate...Microsoft Exchange Contacts APIOperations for managing personal contactsCordial Contacts APIThe contacts API from Cordial — 17 operation(s) for contacts.Reachdesk Contacts APIThe Contacts API from Reachdesk — 1 operation(s) for contacts.Supaglue Contacts APIThe `Contact` Common Object represents a "contact" in CRMs.Filevine Contacts APIManage the global Filevine contact list and project-scoped contact attachments. Contacts represent clients,...Hatch Contacts APIThe contacts API from Hatch — 1 operation(s) for contacts.Currencycloud Contacts APICreate, search and manage the list of users that have access in your Currencycloud account or associated su...Levitate Contacts APIThe Contacts API from Levitate — 5 operation(s) for contacts.Levitate MCP ServerHosted remote MCP server (streamable HTTP) that connects Levitate to AI assistants — Claude Desktop, Claude...Paid Contacts APIThe contacts API from Paid — 5 operation(s) for contacts.CloudTalk Contacts APIAll data you can get about your contacts.OK Capsule Contacts APIRoutes to manage contactsLawmatics Contacts APIA Contact can be thought of as a collection of data about a "Person". A Contact record is the base for all ...Microsoft Power Apps Contacts APIOperations on the contact entity set. A contact represents a person with whom a business unit has a relatio...Amazon Connect Contacts APIOperations for managing contacts and contact interactionsCoperniq Contacts APIThe contacts API from Coperniq — 2 operation(s) for contacts.Flickr Contacts APICalling user's contacts and recent contact activityOutlook Mail APIAPI for accessing and managing email, calendar, contacts, and tasks in Outlook.Crescendo Lab Contacts APIAddress book with NCC-consent tracking.Mixmax Contacts APIMixmax Contacts (people you've emailed) — deprecated resource groupPaperless Parts Contacts APIPaperless Parts includes Customer Relationship Management (CRM) functionality to make it easy to send quote...OKKI Go Contacts APIThe Contacts API from OKKI Go (go.okki.ai) — 1 retired operation (POST /api/v1/contacts/search returns 410 ...Soldo Contacts APIThe Contacts API from Soldo — 2 operation(s) for contacts.
Developing 100 Usable, with meaningful gaps to close
Crowd.dev Contacts APISecurity contacts for a package — includes contact PII (e.g. reporter emails). The contract gates these beh...iContact REST APIREST API v2.2 for managing contacts, lists, segments, campaigns, messages, sends, and reporting inside the ...CoreLogic (Cotality) Contacts APICRM contact records (name, address, phone, email).SimpleTexting Contacts APICreate, read, update, and delete individual contacts.PayMate Contacts APIBuyer / supplier contact onboarding and maintenanceServiceTitan Contacts APICustomer contact methods (phone, email)Clio Contacts APIAll clients, prospective clients, companies, and external co-counsels can be viewed as Contacts under the C...Everbridge Contacts APIContacts operationsECI Solutions Contacts APIThe Contacts API from ECI Solutions — 2 operation(s) for contacts.TUI Group Contacts APIThe contacts API from TUI Group — 1 operation(s) for contacts.Assignar Contacts APIThe Contacts API from Assignar — 2 operation(s) for contacts.Zepto Contacts APIYour Contacts form an address book of parties with whom you can interact. In order to initiate any type of ...Teamleader Contacts APIThe Contacts API from Teamleader — 11 operation(s) for contacts.Quo Contacts APIOperations related to contactsIntercom Contacts APIManage users and leads in your Intercom workspace.Pinch Payments Contacts APIThe Contacts API from Pinch Payments — 2 operation(s) for contacts.Decisiv Contacts APIThe Contacts API from Decisiv — 4 operation(s) for contacts.Agree.com Contacts APIManage your organization's contacts - the people and companies you do business with. ## Overview Contacts a...Catchpoint Contacts APIThe Contacts API from Catchpoint — 3 operation(s) for contacts.Accela Contacts APIA reference contact captures information about people or organizations involved in a business process. Cont...Oracle Eloqua Contacts APIManage contact records and dataWeChat Work (WeCom) APIServer API for Enterprise WeChat / WeCom — Tencent's enterprise collaboration suite. All calls are HTTPS/JS...Tripleseat Contacts APICreate and associate contacts with accounts.VaultRE Contacts APIOperations related to contactsNimble Contacts APIContact records — the Nimble platform root object. Create, read, update and delete person and company conta...Nimble Contacts Fields APIUser-definable contact field schema — fields, choice option lists, field groups and tabs, plus primary-valu...Nimble Contacts Pipelines APIContact pipelines — the lead-progression surface for contacts, distinct from deal pipelines. 8 operation(s).Front Core APIThe Front Core API is a REST API over Front's shared-inbox platform. It exposes conversations, messages, dr...Agile CRM Contacts APIThe Contacts API from Agile CRM — 18 operation(s) for contacts.Agile CRM REST APIHTTPS-only REST API for managing contacts, companies, deals, campaigns, tasks, notes, and tickets in Agile ...Ritten Contacts APIThe contacts API from Ritten — 3 operation(s) for contacts.Monaco Contacts APIThe Contacts API from Monaco — 3 operation(s) for contacts.Front Contacts APIThe Contacts API from Front — 6 operation(s) for contacts.iCallAgent Public API Contacts APIThe contacts API from iCallAgent Public API — 1 operation(s) for contacts.Zoho Inventory Contacts APIContacts ModuleAlto (Vebra / Zoopla) Contacts APIThe Contacts API from Alto (Vebra / Zoopla) — 13 operation(s) for contacts.TPG Telecom Messaging Hub Contacts APIContacts Management API for the Vodafone Business Messaging Hub, providing CRUD over contacts, lists and cu...Tidio Contacts APIManage contacts (website visitors identified by name, email, or phone)TrustLayer Contacts APIThe contacts API from TrustLayer — 4 operation(s) for contacts.HR Partner Contacts APIList employee contact details (phone, email, emergency).Microsoft Dynamics 365 Contacts APIPerson with whom a business unit has a relationship, such as a customer, supplier, or colleague.Beazley Contacts APIThe Contacts API from Beazley — 4 operation(s) for contacts.Pax8 Contacts APIContacts represent the people who should be provided visibility into events such as provisioningRemberg Contacts APIThe contacts API from Remberg — 2 operation(s) for contacts.Lone Wolf Technologies Contacts APIManage transaction contacts.QGenda Contacts APIThe Contacts API from QGenda — 3 operation(s) for contacts.Aptly Contacts APIThe Contacts API from Aptly — 5 operation(s) for contacts.Gojiberry AI Contacts APIThe Contacts API from Gojiberry AI — 5 operation(s) for contacts.Help Scout Customers APIManage customer profiles including addresses, emails, phone numbers, chat handles, social profiles, website...Affinity API V1The legacy Affinity V1 API provides comprehensive read and write access to core CRM data including persons,...Vooma Contacts APIThe Contacts API from Vooma — 2 operation(s) for contacts.ManyChat Subscriber APILook up, search, create, update, tag and set custom field values on subscribers. 15 operations. A subscribe...StackOne Contacts APIThe Contacts API from StackOne — 2 operation(s) for contacts.StackOne Unified CRM APIStackOne Unified CRM API provides a standardized interface for managing customer contacts, accounts, and op...Missive Contacts APIManage contacts and contact dataFixture Contacts APICreate, read, update, and delete person records.bexio Contacts APIThe Contacts API from bexio — 2 operation(s) for contacts.Happyrobot Contacts APIThe Contacts API from Happyrobot — 5 operation(s) for contacts.SegMetrics Import APIThe v1 Import API lets a customer push their own data into a SegMetrics integration — contacts (with UTM at...Beeper Contacts APIPer-account address book and network lookup. The same person can appear under multiple Accounts.Payt Contacts APIOperations about contactsWrike Contacts APIUsers and user groups in Wrike accountsN3XT Contacts APIThe Contacts API from N3XT — 2 operation(s) for contacts.Bird Contacts APIManage workspace contacts and lists.Bird Customer Data APISync customer data from multiple sources in real time to build a 360-degree customer view. Manage contacts,...Ascend Contacts APIRepresents the contacts that may be associated with an Insured account.ilert Contacts APIThe Contacts API from ilert — 4 operation(s) for contacts.Oracle Fusion Cloud Applications Contacts APIManage contact records associated with accountsBoldSign Contacts APIThe Contacts API from BoldSign — 5 operation(s) for contacts.CCP Games Contacts APIThe Contacts API from CCP Games — 6 operation(s) for contacts.EVE Online Contacts APIThe Contacts API from EVE Online — 13 operation(s) for contacts.NationGraph Contacts APIThe Contacts API from NationGraph — 2 operation(s) for contacts.Respond.io Contacts APICreate, read, update, merge, list, and delete contacts.Starlink Contacts APIThe Contacts API from Starlink — 2 operation(s) for contacts.Chatwoot Client APIThe Client API is designed for building custom messaging interfaces for end users. Authenticates using inbo...Chatwoot Contacts APIContact management APIsTruto Contacts APIContact records representing individuals at companiesPandaDoc Contacts APIOperations for managing the PandaDoc contacts directory, including creating, reading, updating, and deletin...Smokeball Contacts APIThe Contacts API from Smokeball — 6 operation(s) for contacts.Reclaim.ai Contacts APIThe contacts API from Reclaim.ai — 7 operation(s) for contacts.AgentPhone Contacts APIThe contacts API from AgentPhone — 3 operation(s) for contacts.Chatfuel Contacts APIThe only documented Chatfuel API operation as of 2026-08-13. POST https://panel.chatfuel.com/api/contacts/{...Diaspora Contacts APIThe Contacts API from Diaspora — 2 operation(s) for contacts.Kajabi Contacts APIThe Contacts API from Kajabi — 4 operation(s) for contacts.Paraşüt Contacts APIThe Contacts API from Paraşüt — 4 operation(s) for contacts.Sage Contacts APICustomer and supplier contact managementfreshworks Contacts APIManage customer contacts including creation, updates, merging, and deactivation.Rocket Matter Contacts APIView, edit, create, and delete contacts.Dropbox Contacts APIThe Contacts API from Dropbox — 2 operation(s) for contacts.Mailjet Contacts APIManage contacts and propertiesWhippy Contacts APIManage contacts and communication preferences.Rightsline Contacts APIContact and company managementZoho Books Contacts APIThe Contacts API from Zoho Books — 4 operation(s) for contacts.VSCO Contacts APIThe Contacts API from VSCO — 2 operation(s) for contacts.Swoogo Contacts APIOrganization-level CRM contacts and contact fields.Proton.ai Contacts APIThe Contacts API from Proton.ai — 3 operation(s) for contacts.Pylon Contacts APIIndividual contacts (end customers).Rackspace Technology Contacts APICustomer contact operations.Reonic Contacts APIExternal people you interact with, such as customers or leads. Not to be confused with [**Users**](#tag/use...Unstoppable Domains Contacts APICreate and manage ICANN-required contacts for domain registration. Contacts represent individuals or organi...
Thin 69 Limited public surface area
Formbricks Contacts APIManage contacts and contact attribute keys.SleekFlow Contacts APICreate, read, search, update, and delete contacts.MyCase Contacts APIPeople and client relationships associated with cases.engageSPARK Contacts APIThe Contacts API from engageSPARK — 2 operation(s) for contacts.Trengo Contacts APIManage contacts and contact profiles.FreeAgent Contacts APIThe Contacts API from FreeAgent — 2 operation(s) for contacts.Rasayel Contacts APIThe Contacts API from Rasayel — 5 operation(s) for contacts.Propertyware Contacts APIResources providing access to contacts.Chatbase Contacts APIManage contacts and custom attributes for a chatbot.Lever Contacts APIContacts represent unique people across multiple opportunities, allowing Lever to deduplicate candidates wh...Rainbow Contacts APIManage and search contactsCOR Contacts APIThe Contacts API from COR — 3 operation(s) for contacts.Service Fusion Contacts APIIndividual contacts and service locations on a customer account.SMSAPI Contacts APIThe Contacts API from SMSAPI — 4 operation(s) for contacts.Zuora Contacts APIA contact defines the customer who holds an account or who is otherwise a person to contact about an accoun...JAGGAER Contacts APIEvent contact managementdotloop Contacts APIThe authenticated user's contacts (address book).Quaderno Contacts APICustomers and vendors.Fleetio Contacts APIThe Contacts API from Fleetio — 2 operation(s) for contacts.SurveyMonkey Contacts APIThe Contacts API from SurveyMonkey — 3 operation(s) for contacts.Apollo Contacts APIThe Contacts API from Apollo — 3 operation(s) for contacts.Fleetbase Contacts APICustomer and facilitator contacts.Uptime.com Contacts APIManage contact groups used for alert notifications.Encompass Contacts APIBorrower (consumer) and business contacts (modeled).lexoffice Contacts APICustomers and vendors.Distru Contacts APIThe Contacts API from Distru — 2 operation(s) for contacts.Textmagic Contacts APIManage contacts in the address book.Messente Contacts APIManage contacts in the Messente Phonebook.JustCall Contacts APICreate and manage contacts in the JustCall directory.ezyVet Contacts APIContacts (clients / pet owners) and their details. (Confirmed CRUD.)Spaceship Contacts APIThe Contacts API from Spaceship — 2 operation(s) for contacts.Waste Management Contacts APIManage billing and service contacts.Apex27 Contacts APIApplicants, vendors, landlords, tenants and buyers held in the CRM.WildApricot Contacts APIContact/member managementFreshsales Contacts APIThe Contacts API from Freshsales — 7 operation(s) for contacts.Freshsales CRM APIREST API for managing contacts, sales accounts, deals, tasks, appointments, notes, and CPQ products in Fres...Joblogic Contacts APIContacts attached to customers, sites, suppliers, and subcontractors.Qualia Contacts and Parties APIPull contact and party data for the files on an account - the people and organizations attached to a closin...GrowthZone Contacts APIIndividuals (persons) and organizations, and their related data.Samsara Contacts APIThe Contacts API from Samsara — 2 operation(s) for contacts.Drift Contacts API[https://devdocs.drift.com/docs/contact-model](https://devdocs.drift.com/docs/contact-model)Groove GraphQL API v2GraphQL API exposing conversations, messages, agents, contacts, mailboxes, tags, and knowledge base data th...Termii Contacts APIManage phonebooks and the contacts within them.freshdesk Contacts APIManage contacts (end users) who submit support tickets.MYOB Business APIREST-based cloud API for MYOB AccountRight, MYOB Essentials, and MYOB Business. Provides endpoints for mana...WM Contacts APIBilling and service contacts on an account.Aircall Contacts APIThe Contacts API from Aircall — 2 operation(s) for contacts.JOBOX.ai Contacts APIThe contacts API from JOBOX.ai — 5 operation(s) for contacts.SkySlope Contacts APIThe Contacts API from SkySlope — 4 operation(s) for contacts.Wealthbox Contacts APIThe Contacts API from Wealthbox — 2 operation(s) for contacts.Capsule CRM API v2REST API for managing Capsule parties (contacts and organisations), opportunities, projects (cases), tasks,...Commusoft Contacts APIManage contacts linked to customers or suppliersWATI Contacts APIManage WhatsApp contacts in the WATI workspace.DNSimple Contacts APIThe Contacts API from DNSimple — 1 operation(s) for contacts.GoDaddy Contacts APIThe Contacts API from GoDaddy — 1 operation(s) for contacts.BigChange Contacts APIThe Contacts API from BigChange — 2 operation(s) for contacts.Cacheflow Contacts APIThe Contacts API from Cacheflow — 2 operation(s) for contacts.DealerSocket Customers APIInbound customer integration surface. The Customer Update integration modifies customer records in DealerSo...NodePing Contacts APIThe Contacts API from NodePing — 1 operation(s) for contacts.Getro Network API v2Read-oriented JSON REST API exposing a Getro network's companies, jobs and contacts, plus shared reference ...Clear Books REST APIRESTful API for integrating with Clear Books accounting software to manage invoices, payments, contacts, ba...Dialpad Contacts APIThe Contacts API from Dialpad — 2 operation(s) for contacts.Alchemer REST APIRESTful API v5 for managing surveys, responses, contacts, campaigns, and account resources within the Alche...Routable Contacts APIContacts associated with companies.Insightly Contacts APIThe Contacts API from Insightly — 3 operation(s) for contacts.Insightly REST API v3.1REST API for managing contacts, organizations, leads, opportunities, projects, tasks, events, products, pri...Embat Contacts API`Contact` represents a client or supplier your company transacts with. `customId` is the unique identifier ...Accelo Contacts APIThe Contacts API from Accelo — 2 operation(s) for contacts.Grapes Finance Contacts APIBeneficiary management for third-party payouts
Emerging 21 Early or largely undocumented
Zoho Invoice Contacts APIThe Contacts API from Zoho Invoice — 3 operation(s) for contacts.Replyr.ai Contacts APIThe Contacts API from Replyr.ai — 12 operation(s) for contacts.graph8 Build APIOne REST API across the revenue surface — contacts, companies, campaigns and events — plus SDKs, a CLI and ...Rentec Direct Open APIThe Rentec Direct Open API v3 provides RESTful access to property management data including properties, ten...Chatwork Contacts APIThe Contacts API from Chatwork — 1 operation(s) for contacts.Bizzabo Public APIRESTful API for managing B2B events including conferences, speakers, ticketing, attendee registration, cont...SmartSimple SmartConnect Users APIGet, list, and update the people (applicants, reviewers, contacts, and internal staff) in a SmartSimple ins...Zoho Desk Contacts APIThe Contacts API from Zoho Desk — 2 operation(s) for contacts.Meow Contacts APIManage contacts for crypto and USDC transfers.Jones Lang LaSalle Contacts APIManage contacts including vendors and tenants.Dolibarr REST APIREST API for the Dolibarr ERP/CRM platform providing full CRUD operations on business objects including con...Printavo Customers and Contacts APIGraphQL surface for customers (companies) and their contacts. Query single or plural customers and contacts...Applied Epic Contacts APICentralize contact data for clients, prospects, carriers, and vendors, with filtering by classification, em...Orange Logic Users and Contacts APIManage user and contact accounts, group assignments, permissions, and organizational hierarchies. Handled t...Zeffy Contacts APIAn organization's donors and supporters.Joomla Web Services APIThe built-in Joomla Web Services API provides RESTful JSON endpoints for managing articles, categories, con...FranConnect CRM APICRM module (path segment "cm"). Read and write contacts and relationship/communication records that support...Intermedia Address Book APIThe Intermedia Address Book API aggregates user contacts from multiple sources into a unified directory acc...Buildium Tenants APIManages tenant records, contact information, and tenant-level communications inside Buildium.EZLynx Applicants and Contacts APICreate and update applicants, contacts, prospects, and opportunities in the EZLynx management system and CR...Onafriq Contacts APIContacts API for adding and retrieving customer (payer / payee) records used across Payins, Payouts, and re...
Minimal 4 Almost no public developer surface
LEAP Matters & Contacts APIModeled matter and contact/client management surface that third-party Marketplace apps integrate against - ...Personify Wild Apricot APIRESTful API for the Wild Apricot small-association product, secured with OAuth 2.0 against base https://api...ResWare Contacts APIModeled logical service area for the people and organizations attached to a file - buyers, sellers, lenders...Pico APIThe Pico API let developers build custom workflows and integrations on the Pico creator platform — includin...
Companies reaching this through an API (264)
These companies publish an API, specification or operation carrying “Contacts” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Accela
Accelo
ActiveCampaign
AgentPhone
Agile CRM
Agree.com
Aircall
Alchemer
AlphaLoops FMCSA Carrier Data API
Alto (Vebra / Zoopla)
Amazon Connect
Amazon Ground Station
Amazon Web Services
Apex27
Apideck
Apollo
Apollo API Documentation
Apollo.io
Applied Systems
Aptly
Ascend
AskNicely
Assignar
Avalara
Beazley
Beeper
bexio
BigChange
Bird
Bizzabo
BoldSign
Booking.com
Bounceexchange
Buildium
Cacheflow
Catchpoint
CCP Games
Chatbase
Chatfuel
Chatwork
Cisco Umbrella
Clear Books
Clio
Close
CloudTalk
Common Room
Commusoft
Coperniq
COR
Cordial
Show all 264 companies ↓
CoreLogic (Cotality)
Crescendo Lab
Crowd.dev
Currencycloud
Cvent
Cvent Hospitality Cloud
Cvent Registration
DealerSocket
Decisiv
Dialpad
Diaspora
Distru
DNSimple
Docusign
dotloop
Drift
Dropbox
Dun & Bradstreet
ECI Solutions
Elation Health
Embat
Encompass
engageSPARK
Entergram
Erxes
EVE Online
Everbridge
EZLynx
ezyVet
Factset
Filevine
Fixture
Fleetbase
Fleetio
Flickr
Formbricks
FranConnect
FreeAgent
Freshdesk
Freshworks
Front
FrontApp
GetAccept
Getro
Givebutter
GoDaddy
Gojiberry AI
Google
Google Workspace
Grapes Finance
Groove
GrowthZone
Happyrobot
Hatch
Help Scout
HighLevel
HR Partner
iCallAgent Public API
ilert
Impact
Intercom
Intermedia
JAGGAER
Joblogic
JOBOX.ai
Jones Lang LaSalle
JustCall
Kaseya
Kiteworks
Knak
Lawmatics
LeafLink
LEAP
lemlist
Lev
Lever
Lightfield
Lone Wolf Technologies
Loops
Mailchimp
Mailjet
Mailmodo
ManyChat
Meow
Messente
Microsoft
Microsoft Azure
Microsoft Dynamics 365
Microsoft Dynamics 365 Sales
Microsoft Office
Microsoft Office 365
Microsoft Power Apps
Mixmax
MyCase
N3XT
NationBuilder
NationGraph
Nimble
NodePing
OK Capsule
Omnisend
Onafriq
Ontraport
Oracle Eloqua
Oracle Fusion Cloud Applications
Oracle Siebel
Orange Logic
Paid
PandaDoc
Paperless Parts
Paraşüt
Pax8
PayMate
Payrix
Payt
Personify
Pico
Pinch Payments
Plunk
Printavo
Progress Software
Propertyware
Proton.ai
Pylon
QGenda
Quaderno
Qualia
Rackspace Technology
Rainbow
Rasayel
Reachdesk
Reclaim.ai
Remberg
Rentec Direct
Reonic
Replyr.ai
Respond.io
ResWare
Rightsline
Ritten
Rocket Matter
Routable
Sage
Salesforce
Salesforce Marketing Cloud
Samsara
Seamless.AI
SegMetrics
SendGrid
SendPulse
Service Fusion
ServiceTitan
Shop-Ware
Silverpop
Simon Data
Sinch
SkySlope
SleekFlow
Smartlead
SmartSimple
SMSAPI
SolarWinds
Soldo
Soldo Software and Services
Solvimon
Spaceship
Squarespace
StackOne
Starlink
Supaglue
SurveyMonkey
Swoogo
Synthflow
Teamleader
Termii
Textmagic
The Mobile First Company
TPG Telecom
Trengo
Tripleseat
TrustLayer
Truto
TUI Group
Twilio
Unstoppable Domains
Uptime.com
UserGems
VaultRE
Vessel
Vooma
VSCO
Waste Management
WATI
Wealthbox
Weave
WeChat
Whippy
WildApricot
WM
Wrike
Wunderkind
Xiaoman (OKKI)
Zavu
Zeffy
Zendesk
Zendesk Sell
Zepto
Zoho
Zoho Books
Zoho CRM
Zoho Desk
Zoho Inventory
Zoho Invoice
Zuora
Score breakdown
Frequency
78.0
log-scaled weighted occurrences
Breadth
1.4
spread across providers
Quality lift
56.2
mean composite of providers using it
Cohesion
17.0
strength of nearest seed neighbor
Related tags
CRM 92 co-occurrences
Task 66 co-occurrences
Notes 41 co-occurrences
Campaigns 49 co-occurrences
Email 57 co-occurrences
Marketing Automation 40 co-occurrences
SMS 39 co-occurrences
Where this tag comes from
Provider tag54
Api tag311
Openapi tag186
Openapi op tag911
Cohort brief
Auto-generatedThe 49 providers in the APIs.io catalog tagged Contacts, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
49
all scored
Mean Kin Score
50.1
+27.2 vs catalog 22.9
Mean Agent Readiness
34
+22.1 vs catalog 11.9
Spread
0–93.2
median 52.5 · σ 18.7
How the 49 split by band
Exemplar 6Strong 16Developing 14Thin 8Emerging 4Minimal 1
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Access Clarity | 59.3 | 26.5 | +32.8 | 49 |
| Contract Quality | 49.9 | 17.6 | +32.3 | 49 |
| Operational Transparency | 41.1 | 13.7 | +27.4 | 49 |
| Developer Ergonomics | 48 | 23.2 | +24.8 | 49 |
| Discoverability | 68.4 | 58.1 | +10.3 | 49 |
| Contract Governance | 13.1 | 6.3 | +6.8 | 49 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 49% | 14% | +35 |
| MCP server (first-party) | 47% | 12% | +35 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 35% | 11% | +24 |
| Security | 98% | 98% | 0 |
| Arazzo workflows | 10% | 2% | +8 |
| Governance rules | 39% | 14% | +25 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 Nylas 93.2
- 2 ZoomInfo 87.3
- 3 Brevo 81.7
- 4 Cvent Event Cloud 71.9
- 5 GetResponse 71.6
- 6 Constant Contact 69.4
- 7 Microsoft Outlook 66
- 8 Benchmark Email 65
- 9 Inflection.io 64.6
- 10 Relm 64.5
Top by Agent Readiness
- 1 ZoomInfo 65.8
- 2 Monaco 62.8
- 3 Relm 62.2
- 4 Brevo 58.4
- 5 Nylas 56.6
- 6 Folk 52.2
- 7 Kajabi 52.1
- 8 Actionstep 50
- 9 Inflection.io 49.3
- 10 Spruce Health 48.4
All 54 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
5 October 2026, across 29093
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.