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
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 15 Solid coverage with minor gaps
Developing 11 Usable, with meaningful gaps to close
Thin 9 Limited public surface area
APIs with this tag (327)
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 44 Complete, well-documented, and agent-ready
Twilio Contacts APIManage marketing contactsSalesforce Contacts APIOperations for listing, retrieving, and deleting Marketing Cloud contact records.Nylas Contacts APIContacts. Read, create, update and delete a grant's contacts and contact groups.SendGrid Contacts APITwilio SendGrid Marketing Campaigns Contacts APIZoho CRM Contacts APIThe Contacts API from Zoho CRM — 4 operation(s) for contacts.brevo Contacts APICreate, retrieve, update, and delete individual 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...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...Mailchimp Contacts APIThe contacts API from Mailchimp — 6 operation(s) for contacts.ActiveCampaign Contacts APIThe Contacts API from ActiveCampaign — 28 operation(s) for contacts.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.Omnisend Contacts APIThe Contacts API from Omnisend — 7 operation(s) for contacts. Version 2026-03-15, harvested from Omnisend's...lemlist Contacts APICRM-side contacts, contact lists, list membership and exports.GetResponse Contacts APIAPI documentation for contacts and their properties (e.g., tags, custom fields)Sinch Contacts APIManage contacts and their channel identities. Contacts group together underlying connected channel recipien...Karbon Contacts APIManage your contacts and get the full overview over clients, whether they are individuals or organizations....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...Microsoft Dynamics 365 Sales Contacts APIContact (person) recordsImpact Contacts APIThe Contacts API from Impact — 2 operation(s) for contacts.UserGems Contacts APIAdd and remove contacts UserGems should track for job changes.Loops Contacts APICreate, update, find and delete contacts, and manage suppression status. 6 operation(s) in the Loops REST A...Avalara Contacts APIManage company contactsLightfield Contacts APIThe Contacts API from Lightfield — 3 operation(s) for contacts.Progress Software Contacts APIThe Contacts API from Progress Software — 2 operation(s) for contacts.Oracle 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 ...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.Squarespace Contacts APIManage customer contacts and address book entries for a website: create, read, update, delete, and query co...Live Direct Marketing Contacts APIThe Contacts API from Live Direct Marketing — 19 operation(s) for contacts.Constant Contact Contacts APIEndpoints and methods to get, create, delete, and update one or more contacts.Microsoft Contacts APIManage contactsFireblocks Contacts APIThe Contacts API from Fireblocks — 1 operation(s) for contacts.HighLevel Contacts APIDocumentation for Contacts API
Strong 75 Solid coverage with minor gaps
Common Room Contacts APIThe Contacts API from Common Room — 6 operation(s) for contacts.Erxes GraphQL APIGraphQL Federation API powering the erxes XOS platform. An Apollo Router gateway federates one subgraph per...Kiteworks Contacts APIThe contacts API from Kiteworks — 2 operation(s) for contacts.Seamless.AI Public APIThe Seamless.AI Public API v1 — nine operations covering contact and company search, asynchronous enrichmen...Inflection.io Contacts APIThe Contacts API from Inflection.io — 6 operation(s) for contacts.Booking.com Contacts APIThe Connectivity Contacts endpoint manages the contact records attached to a property on Booking.com, letti...Simon Data Contacts APIContact profile lookup.Cvent Hospitality Cloud Contacts APIA contact is a record in your account’s address book that represents an individual. The data stored within ...Relm Contacts APIThe Contacts API from Relm — 3 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...Ontraport REST APIRESTful API providing CRUD access to contacts, transactions, tags, sequences, forms, landing pages, and eco...Givebutter Contacts APIThe Contacts API from Givebutter — 6 operation(s) for contacts. Split by tag from Givebutter's own publishe...AlphaLoops FMCSA Carrier Data API Contacts APIThe Contacts API from AlphaLoops FMCSA Carrier Data API — 2 operation(s) for contacts.GetAccept Contacts APIEverything related to contactsCurrencycloud Contacts APICreate, search and manage the list of users that have access in your Currencycloud account or associated su...Apollo.io Contacts APIWorkspace CRM contacts — create, update, search, stages and ownership. 10 operation(s) from the published A...Knak Contacts APICreate, retrieve and list contacts in Knak Send.Paid Contacts APIThe contacts API from Paid — 5 operation(s) for contacts.Lev Contacts APIThe Contacts API from Lev — 5 operation(s) for contacts.Mailmodo Contacts APIAdd, remove, archive, unsubscribe, resubscribe, and look up contactsCisco Umbrella Contacts APIThe Contacts API from Cisco Umbrella — 2 operation(s) for contacts.Payrix Contacts APIA contact reflects a known, valid individual registered as a contact for the entity. It is purely informati...Factset Contacts APIThe Contacts API from Factset — 8 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.Zoho Contacts APIThe Contacts API from Zoho — 4 operation(s) for contacts.Front Core APIThe Front Core API is a REST API over Front's shared-inbox platform. It exposes conversations, messages, dr...FrontApp Contacts APIThe Contacts API from FrontApp — 6 operation(s) for contacts.NationBuilder Contacts APIContacts are logged interactions between people in your nation. More information about contacts and the fie...Outlook Contacts APIAccess to Outlook personal contacts for managing contact information, creating contact folders, and organiz...Tale Contacts APIContact records.LeafLink Contacts APIThe contacts API from LeafLink — 4 operation(s) for contacts.Entergram Contacts APIWorkspace contacts deduplicated across connected accounts, including shared groups and attribution.SolarWinds Contacts APIManage alert contactsSendlane Contacts APIThe Contacts API from Sendlane — 18 operation(s) for contacts.D&B Direct+ Search APIThe Search surface of D&B Direct+ lets applications find businesses, principals, and related entities using...Solvimon Contacts APIThe contacts API from Solvimon — 2 operation(s) for contacts.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.Dotdigital Contacts APIThe Contacts API from Dotdigital — 6 operation(s) for contacts.People APIRead and manage the authenticated user contacts and profiles, and search the directory.Spruce Health Contacts APIThe Contacts API from Spruce Health — 6 operation(s) for contacts.Kaseya Contacts APIThe Contacts API from Kaseya — 13 operation(s) for contacts.Kartra APIKartra's inbound developer API. One endpoint, POST only, form-encoded, with the operation selected by `acti...Zavu Contacts APIThe Contacts API from Zavu — 8 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.Vessel Contacts APIThe contacts API from Vessel — 5 operation(s) for contacts.Amazon Connect Contacts APIOperations for managing contacts and contact interactionsMicrosoft Exchange Contacts APIOperations for managing personal contactsAmazon Ground Station Contacts APIThe Contacts API from Amazon Ground Station — 1 operation(s) for contacts.Amazon Web Services Contacts APIThe Contacts API from Amazon Web Services — 3 operation(s) for contacts.Silverpop Contacts APIContact (recipient) list managementCloudTalk Contacts APIAll data you can get about your contacts.Cordial Contacts APIThe contacts API from Cordial — 17 operation(s) for contacts.Synthflow Contacts APIThe contacts API from Synthflow — 2 operation(s) for contacts.Apideck Contacts APIThe Contact resource represents individuals, including details such as name, contact information, associate...FOLIO Contacts APIThe Contacts API from FOLIO — 2 operation(s) for contacts.Hatch Contacts APIThe contacts API from Hatch — 1 operation(s) for contacts.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...Supaglue Contacts APIThe `Contact` Common Object represents a "contact" in CRMs.Reachdesk Contacts APIThe Contacts API from Reachdesk — 1 operation(s) for contacts.Shop-Ware Contacts APIThe Contacts API from Shop-Ware — 2 operation(s) for contacts.OK Capsule Contacts APIRoutes to manage contactsCrowd.dev Contacts APISecurity contacts for a package — includes contact PII (e.g. reporter emails). The contract gates these beh...Coperniq Contacts APIThe contacts API from Coperniq — 2 operation(s) for contacts.Crescendo Lab Contacts APIAddress book with NCC-consent tracking.Soldo Contacts APIThe Contacts API from Soldo — 2 operation(s) for contacts.Mixmax Contacts APIMixmax Contacts (people you've emailed) — deprecated resource groupOutlook Mail APIAPI for accessing and managing email, calendar, contacts, and tasks in Outlook.OKKI Go Contacts APIThe Contacts API from OKKI Go (go.okki.ai) — 1 retired operation (POST /api/v1/contacts/search returns 410 ...Lawmatics Contacts APIA Contact can be thought of as a collection of data about a "Person". A Contact record is the base for all ...Blackbaud Contacts APIThe Contacts API from Blackbaud — 3 operation(s) for contacts.Microsoft Power Apps Contacts APIOperations on the contact entity set. A contact represents a person with whom a business unit has a relatio...
Developing 103 Usable, with meaningful gaps to close
iContact REST APIREST API v2.2 for managing contacts, lists, segments, campaigns, messages, sends, and reporting inside the ...Paperless Parts Contacts APIPaperless Parts includes Customer Relationship Management (CRM) functionality to make it easy to send quote...TUI Group Contacts APIThe contacts API from TUI Group — 1 operation(s) for contacts.ServiceTitan Contacts APICustomer contact methods (phone, email)PayMate Contacts APIBuyer / supplier contact onboarding and maintenanceZepto Contacts APIYour Contacts form an address book of parties with whom you can interact. In order to initiate any type of ...Dovetail Contacts APIThe Contacts API from Dovetail — 2 operation(s) for contacts.Assignar Contacts APIThe Contacts API from Assignar — 2 operation(s) for contacts.Everbridge Contacts APIContacts operationsQuo Contacts APIOperations related to contactsTeamleader Contacts APIThe Contacts API from Teamleader — 11 operation(s) for contacts.SimpleTexting Contacts APICreate, read, update, and delete individual contacts.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.ECI Solutions Contacts APIThe Contacts API from ECI Solutions — 2 operation(s) for contacts.Filevine Contacts APIManage the global Filevine contact list and project-scoped contact attachments. Contacts represent clients,...Agree.com Contacts APIManage your organization's contacts - the people and companies you do business with. ## Overview Contacts a...Intercom Contacts APIManage users and leads in your Intercom workspace.Accela Contacts APIA reference contact captures information about people or organizations involved in a business process. Cont...Catchpoint Contacts APIThe Contacts API from Catchpoint — 3 operation(s) for contacts.Callfire Contacts APIThe Contacts API from Callfire — 3 operation(s) for contacts.Clio Contacts APIAll clients, prospective clients, companies, and external co-counsels can be viewed as Contacts under the C...VaultRE Contacts APIOperations related to contactsWeChat Work (WeCom) APIServer API for Enterprise WeChat / WeCom — Tencent's enterprise collaboration suite. All calls are HTTPS/JS...Weave Contacts APIPatient/customer contacts and contact info.Nimble 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).Ritten Contacts APIThe contacts API from Ritten — 3 operation(s) for contacts.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 ...Oracle Eloqua Contacts APIManage contact records and dataTPG Telecom Messaging Hub Contacts APIContacts Management API for the Vodafone Business Messaging Hub, providing CRUD over contacts, lists and cu...Flickr Contacts APICalling user's contacts and recent contact activityFront Contacts APIThe Contacts API from Front — 6 operation(s) for contacts.Monaco Contacts APIThe Contacts API from Monaco — 3 operation(s) for contacts.Alto (Vebra / Zoopla) Contacts APIThe Contacts API from Alto (Vebra / Zoopla) — 13 operation(s) for contacts.iCallAgent Public API Contacts APIThe contacts API from iCallAgent Public API — 1 operation(s) for contacts.Yoxel Contacts APIContacts are objects within an address book, containing several pieces of information, such as email addres...Gojiberry AI Contacts APIThe Contacts API from Gojiberry AI — 5 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,...Beazley Contacts APIThe Contacts API from Beazley — 4 operation(s) for contacts.TrustLayer Contacts APIThe contacts API from TrustLayer — 4 operation(s) for contacts.Lone Wolf Technologies Contacts APIManage transaction contacts.Govly Contacts APISearch and inspect government points of contact.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.Microsoft Dynamics 365 Contacts APIPerson with whom a business unit has a relationship, such as a customer, supplier, or colleague.QGenda Contacts APIThe Contacts API from QGenda — 3 operation(s) for contacts.Aptly Contacts APIThe Contacts API from Aptly — 5 operation(s) for contacts.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...Zoho Inventory Contacts APIContacts ModuleMissive Contacts APIManage contacts and contact dataFixture Contacts APICreate, read, update, and delete person records.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...Wrike Contacts APIUsers and user groups in Wrike accountsBeeper Contacts APIPer-account address book and network lookup. The same person can appear under multiple Accounts.Payt Contacts APIOperations about contactsN3XT Contacts APIThe Contacts API from N3XT — 2 operation(s) for contacts.Ascend Contacts APIRepresents the contacts that may be associated with an Insured account.EVE Online Contacts APIThe Contacts API from EVE Online — 13 operation(s) for contacts.Help Scout Customers APIManage customer profiles including addresses, emails, phone numbers, chat handles, social profiles, website...StackOne Contacts APIThe Contacts API from StackOne — 2 operation(s) for contacts.StackOne Unified CRM API (Legacy)Legacy (no longer in active development; existing functionality remains supported). StackOne Unified CRM AP...Oracle Fusion Cloud Applications Contacts APIManage contact records associated with accountsInboxapp APIInboxapp API as documented publicly: 35 operations. Contract generated from the documentation by API Evange...CCP Games Contacts APIThe Contacts API from CCP Games — 6 operation(s) for contacts.NationGraph Contacts APIThe Contacts API from NationGraph — 2 operation(s) for contacts.Starlink Contacts APIThe Contacts API from Starlink — 2 operation(s) for contacts.Avochato Contacts APIThe Contacts API from Avochato — 4 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.CoreLogic (Cotality) Contacts APICRM contact records (name, address, phone, email).Orange Logic Users and Contacts APIManage user and contact accounts, group assignments, permissions, and organizational hierarchies. Handled t...Diaspora Contacts APIThe Contacts API from Diaspora — 2 operation(s) for contacts.NICE Contacts APIThe Contacts API from NICE — 1 operation(s) for contacts.Zoho Books Contacts APIThe Contacts API from Zoho Books — 4 operation(s) for contacts.Paraşüt Contacts APIThe Contacts API from Paraşüt — 4 operation(s) for contacts.Tripleseat Contacts APICreate and associate contacts with accounts.Chatwoot Client APIThe Client API is designed for building custom messaging interfaces for end users. Authenticates using inbo...Chatwoot Contacts APIContact management APIsDeeplead Contacts APIThe Contacts API from Deeplead — 1 operation(s) for contacts.Rocket Matter Contacts APIView, edit, create, and delete contacts.Chatfuel Contacts APIThe only documented Chatfuel API operation as of 2026-08-13. POST https://panel.chatfuel.com/api/contacts/{...Sage Contacts APICustomer and supplier contact managementTruto Contacts APIContact records representing individuals at companiesPandaDoc Contacts APIOperations for managing the PandaDoc contacts directory, including creating, reading, updating, and deletin...Dropbox Contacts APIThe Contacts API from Dropbox — 2 operation(s) for contacts.HR Partner Contacts APIList employee contact details (phone, email, emergency).Calendly Contacts APIThe contacts API from Calendly — 4 operation(s) for contacts.Kajabi Contacts APIThe Contacts API from Kajabi — 4 operation(s) for contacts.VSCO Contacts APIThe Contacts API from VSCO — 2 operation(s) for contacts.freshworks Contacts APIManage customer contacts including creation, updates, merging, and deactivation.Mailjet Contacts APIManage contacts and propertiesProton.ai Contacts APIThe Contacts API from Proton.ai — 3 operation(s) for contacts.Tidio Contacts APIManage contacts (website visitors identified by name, email, or phone)Whippy Contacts APIManage contacts and communication preferences.Reonic Contacts APIExternal people you interact with, such as customers or leads. Not to be confused with [**Users**](#tag/use...Rightsline Contacts APIContact and company managementFreeAgent Contacts APIThe Contacts API from FreeAgent — 2 operation(s) for contacts.
Thin 71 Limited public surface area
Respond.io Contacts APICreate, read, update, merge, list, and delete contacts.Affinity API V1The legacy Affinity V1 API provides comprehensive read and write access to core CRM data including persons,...bexio Contacts APIThe Contacts API from bexio — 2 operation(s) for contacts.engageSPARK Contacts APIThe Contacts API from engageSPARK — 2 operation(s) for contacts.Amberai Contacts APIThe Contacts API from Amberai — 2 operation(s) for contacts.Rasayel Contacts APIThe Contacts API from Rasayel — 5 operation(s) for contacts.Wunderkind Contacts APIThe Contacts API from Wunderkind — 1 operation(s) for contacts.ilert Contacts APIThe Contacts API from ilert — 4 operation(s) for contacts.SleekFlow Contacts APICreate, read, search, update, and delete contacts.Smokeball Contacts APIThe Contacts API from Smokeball — 6 operation(s) for contacts.BoldSign Contacts APIThe Contacts API from BoldSign — 5 operation(s) for 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...COR Contacts APIThe Contacts API from COR — 3 operation(s) for contacts.Trengo Contacts APIManage contacts and contact profiles.Bounceexchange Contacts APIThe Contacts API from Bounceexchange — 1 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...Rainbow Contacts APIManage and search contactsRackspace Technology Contacts APICustomer contact operations.JAGGAER Contacts APIEvent contact managementMyCase Contacts APIPeople and client relationships associated with cases.Qualia Contacts and Parties APIPull contact and party data for the files on an account - the people and organizations attached to a closin...Freshsales 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...ezyVet Contacts APIContacts (clients / pet owners) and their details. (Confirmed CRUD.)Spaceship Contacts APIThe Contacts API from Spaceship — 2 operation(s) for contacts.Unstoppable Domains Contacts APICreate and manage ICANN-required contacts for domain registration. Contacts represent individuals or organi...JustCall Contacts APICreate and manage contacts in the JustCall directory.SurveyMonkey Contacts APIThe Contacts API from SurveyMonkey — 3 operation(s) for contacts.Apex27 Contacts APIApplicants, vendors, landlords, tenants and buyers held in the CRM.Swoogo Contacts APIOrganization-level CRM contacts and contact fields.Formbricks Contacts APIManage contacts and contact attribute keys.Wealthbox Contacts APIThe Contacts API from Wealthbox — 2 operation(s) for contacts.Groove GraphQL API v2GraphQL API exposing conversations, messages, agents, contacts, mailboxes, tags, and knowledge base data th...Waste Management Contacts APIManage billing and service contacts.Propertyware Contacts APIResources providing access to contacts.Samsara Contacts APIThe Contacts API from Samsara — 2 operation(s) for contacts.WildApricot Contacts APIContact/member managementPylon Contacts APIIndividual contacts (end customers).JOBOX.ai Contacts APIThe contacts API from JOBOX.ai — 5 operation(s) for contacts.Capsule CRM API v2REST API for managing Capsule parties (contacts and organisations), opportunities, projects (cases), tasks,...freshdesk Contacts APIManage contacts (end users) who submit support tickets.Aircall Contacts APIThe Contacts API from Aircall — 2 operation(s) for contacts.Drift Contacts API[https://devdocs.drift.com/docs/contact-model](https://devdocs.drift.com/docs/contact-model)WATI Contacts APIManage WhatsApp contacts in the WATI workspace.Cacheflow Contacts APIThe Contacts API from Cacheflow — 2 operation(s) for contacts.GoDaddy Contacts APIThe Contacts API from GoDaddy — 1 operation(s) for contacts.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...DealerSocket Customers APIInbound customer integration surface. The Customer Update integration modifies customer records in DealerSo...Dialpad Contacts APIThe Contacts API from Dialpad — 2 operation(s) for contacts.Getro Network API v2Read-oriented JSON REST API exposing a Getro network's companies, jobs and contacts, plus shared reference ...Commusoft Contacts APIManage contacts linked to customers or suppliersEmbat Contacts API`Contact` represents a client or supplier your company transacts with. `customId` is the unique identifier ...dotloop Contacts APIThe authenticated user's contacts (address book).Service Fusion Contacts APIIndividual contacts and service locations on a customer account.DNSimple Contacts APIThe Contacts API from DNSimple — 1 operation(s) for contacts.SMSAPI Contacts APIThe Contacts API from SMSAPI — 4 operation(s) for contacts.Encompass Contacts APIBorrower (consumer) and business contacts (modeled).Fleetio Contacts APIThe Contacts API from Fleetio — 2 operation(s) for contacts.NodePing Contacts APIThe Contacts API from NodePing — 1 operation(s) for contacts.Messente Contacts APIManage contacts in the Messente Phonebook.Accelo Contacts APIThe Contacts API from Accelo — 2 operation(s) for contacts.Quaderno Contacts APICustomers and vendors.Zoho Invoice Contacts APIThe Contacts API from Zoho Invoice — 3 operation(s) for contacts.Chatwork Contacts APIThe Contacts API from Chatwork — 1 operation(s) for contacts.Fleetbase Contacts APICustomer and facilitator contacts.Uptime.com Contacts APIManage contact groups used for alert notifications.BigChange Contacts APIThe Contacts API from BigChange — 2 operation(s) for contacts.lexoffice Contacts APICustomers and vendors.Replyr.ai Contacts APIThe Contacts API from Replyr.ai — 12 operation(s) for contacts.
Emerging 29 Early or largely undocumented
graph8 Build APIOne REST API across the revenue surface — contacts, companies, campaigns and events — plus SDKs, a CLI and ...Textmagic Contacts APIManage contacts in the address book.Joblogic Contacts APIContacts attached to customers, sites, suppliers, and subcontractors.Zoho Desk Contacts APIThe Contacts API from Zoho Desk — 2 operation(s) for contacts.Grapes Finance Contacts APIBeneficiary management for third-party payoutsWM Contacts APIBilling and service contacts on an account.Termii Contacts APIManage phonebooks and the contacts within them.Meow Contacts APIManage contacts for crypto and USDC transfers.GrowthZone Contacts APIIndividuals (persons) and organizations, and their related data.MYOB Business APIREST-based cloud API for MYOB AccountRight, MYOB Essentials, and MYOB Business. Provides endpoints for mana...Routable Contacts APIContacts associated with companies.SkySlope Contacts APIThe Contacts API from SkySlope — 4 operation(s) for contacts.Jones Lang LaSalle Contacts APIManage contacts including vendors and tenants.HoneyBook Contacts APIOperations about ContactsClear Books REST APIRESTful API for integrating with Clear Books accounting software to manage invoices, payments, contacts, ba...Alchemer REST APIRESTful API v5 for managing surveys, responses, contacts, campaigns, and account resources within the Alche...Bizzabo Public APIRESTful API for managing B2B events including conferences, speakers, ticketing, attendee registration, cont...Rentec Direct Open APIThe Rentec Direct Open API v3 provides RESTful access to property management data including properties, ten...SJ Contacts APIThe Contacts API from SJ — 1 operation(s) for contacts.SmartSimple SmartConnect Users APIGet, list, and update the people (applicants, reviewers, contacts, and internal staff) in a SmartSimple ins...EZLynx Applicants and Contacts APICreate and update applicants, contacts, prospects, and opportunities in the EZLynx management system and CR...Dolibarr REST APIREST API for the Dolibarr ERP/CRM platform providing full CRUD operations on business objects including con...FranConnect CRM APICRM module (path segment "cm"). Read and write contacts and relationship/communication records that support...Joomla Web Services APIThe built-in Joomla Web Services API provides RESTful JSON endpoints for managing articles, categories, con...Intermedia Address Book APIThe Intermedia Address Book API aggregates user contacts from multiple sources into a unified directory acc...Zeffy Contacts APIAn organization's donors and supporters.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...Onafriq Contacts APIContacts API for adding and retrieving customer (payer / payee) records used across Payins, Payouts, and re...
Minimal 5 Almost no public developer surface
Buildium Tenants APIManages tenant records, contact information, and tenant-level communications inside Buildium.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...LEAP Matters & Contacts APIModeled matter and contact/client management surface that third-party Marketplace apps integrate against - ...Pico APIThe Pico API let developers build custom workflows and integrations on the Pico creator platform — includin...
Companies reaching this through an API (275)
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
Amberai
Apex27
Apideck
Apollo.io
Applied Systems
Aptly
Ascend
AskNicely
Assignar
Avalara
Avochato
Beazley
Beeper
bexio
BigChange
Bird
Bizzabo
Blackbaud
BoldSign
Booking.com
Bounceexchange
Buildium
Cacheflow
Callfire
Catchpoint
CCP Games
Chatbase
Chatfuel
Chatwork
Cisco Umbrella
Clear Books
Clio
Close
Common Room
Commusoft
Coperniq
COR
Show all 275 companies ↓
Cordial
CoreLogic (Cotality)
Crescendo Lab
Crowd.dev
Currencycloud
Cvent
Cvent Hospitality Cloud
Cvent Registration
DealerSocket
Decisiv
Deeplead
Dialpad
Diaspora
DNSimple
Docusign
dotloop
Dovetail
Drift
Dropbox
Dun & Bradstreet
ECI Solutions
Elation Health
Embat
Encompass
engageSPARK
Entergram
Erxes
EVE Online
Everbridge
EZLynx
ezyVet
Factset
Filevine
Fireblocks
Fixture
Fleetbase
Fleetio
Flickr
FOLIO
Formbricks
FranConnect
FreeAgent
Freshdesk
Freshworks
Front
FrontApp
GetAccept
Getro
Givebutter
GoDaddy
Gojiberry AI
Google
Google Workspace
Govly
Grapes Finance
Groove
GrowthZone
Happyrobot
Hatch
Help Scout
HighLevel
HR Partner
iCallAgent Public API
ilert
Impact
Inboxapp
Inflection.io
Intercom
Intermedia
JAGGAER
Joblogic
JOBOX.ai
Jones Lang LaSalle
JustCall
Karbon
Kaseya
Kiteworks
Knak
Lawmatics
LeafLink
LEAP
lemlist
Lev
Lever
Lightfield
Live Direct Marketing
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
NICE
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
SJ
SkySlope
SleekFlow
Smartlead
SmartSimple
SMSAPI
SolarWinds
Soldo
Solvimon
Spaceship
Squarespace
StackOne
Starlink
Supaglue
SurveyMonkey
Swoogo
Synthflow
Tale
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
77.2
log-scaled weighted occurrences
Breadth
1.2
spread across providers
Quality lift
45.1
mean composite of providers using it
Cohesion
16.0
strength of nearest seed neighbor
Related tags
CRM 92 co-occurrences
Notes 46 co-occurrences
Campaigns 52 co-occurrences
Task 67 co-occurrences
Email 59 co-occurrences
Marketing Automation 39 co-occurrences
Custom Fields 36 co-occurrences
Where this tag comes from
Provider tag56
Api tag328
Openapi tag194
Openapi op tag961
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
of 54 in the catalog
Mean Kin Score
47.1
+24.9 vs catalog 22.2
Mean Agent Readiness
33.3
+21.3 vs catalog 12
Spread
0–87.5
median 49.7 · σ 20.4
How the 49 split by band
Exemplar 6Strong 15Developing 11Thin 9Emerging 6Minimal 2
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 49 | 17.2 | +31.8 | 49 |
| Access Clarity | 49 | 23.9 | +25.1 | 49 |
| Operational Transparency | 37.7 | 13 | +24.7 | 49 |
| Developer Ergonomics | 47.3 | 23.2 | +24.1 | 49 |
| Discoverability | 68.9 | 57.9 | +11 | 49 |
| Contract Governance | 12 | 6.5 | +5.5 | 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) | 45% | 13% | +32 |
| MCP server (first-party) | 43% | 12% | +31 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 33% | 11% | +22 |
| Security | 98% | 98% | 0 |
| Arazzo workflows | 10% | 2% | +8 |
| Governance rules | 39% | 16% | +23 |
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 87.5
- 2 ZoomInfo 86.6
- 3 Brevo 80.8
- 4 GetResponse 72.1
- 5 Cvent Event Cloud 70.9
- 6 Constant Contact 68
- 7 Microsoft Outlook 65.9
- 8 Relm 64.6
- 9 Keap 64.4
- 10 Benchmark Email 63.5
Top by Agent Readiness
- 1 ZoomInfo 64.3
- 2 Relm 62.6
- 3 Monaco 61.4
- 4 Nylas 57.2
- 5 Brevo 57.2
- 6 Folk 53.2
- 7 Kajabi 53
- 8 Spruce Health 49.5
- 9 GetResponse 48.9
- 10 Actionstep 48.9
All 54 members of this roster resolve to a provider in the
catalog; 49 carry a score (91%).
The figures above describe the scored members only.
Coverage caveat. 26 of 49 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 24 October 2026, across 31984 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.
Coverage caveat. 26 of 49 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 24 October 2026, across 31984 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.