niche · -0.3 capabilitymarket resourcedomain

Calling

Score 19.3 / 100 9 providers 8 APIs Search apis.io →

Providers using this tag (9)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 2 Complete, well-documented, and agent-ready
HubSpotHubSpot is an AI-native customer platform built around the Smart CRM, unifying marketing, sales, customer s...93 APIs82.9CloseClose is an inside-sales CRM with calling, email, SMS, and WhatsApp built in. The Close API exposes leads, ...62 APIs79.5
Developing 4 Usable, with meaningful gaps to close
Microsoft TeamsMicrosoft Teams is a collaboration platform that combines workplace chat, meetings, file storage, and appli...11 APIs53.1ZoomZoom is a communications platform that allows users to connect with video, audio, phone, and chat. The Zoom...47 APIs50.8WebexCisco Webex is a comprehensive collaboration platform offering APIs for messaging, meetings, calling, devic...193 APIs48.7StreamStream (GetStream.io) provides scalable, API-first infrastructure for in-app chat messaging, activity feeds...14 APIs42.6
Thin 1 Limited public surface area
AgoraAgora is a real-time engagement platform providing ultra-low latency voice, video, signaling, chat, interac...11 APIs28.2
Emerging 2 Early or largely undocumented
Cisco Control HubCisco Control Hub is the administration console for Webex services. Programmatic access is delivered throug...7 APIs26.0Cisco Collaboration Hybrid SolutionsAPIs for Cisco's hybrid collaboration solutions that combine Webex cloud services with on-premises Unified ...12 APIs19.4

APIs with this tag (8)

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 1 Complete, well-documented, and agent-ready
HubSpot Calling Extensions APIThe calling extensions SDK enables apps to provide a custom calling option to HubSpot users directly from C...82.9
Developing 4 Usable, with meaningful gaps to close
Microsoft Teams Real-Time Communication APIsAPIs for building calling and meeting experiences in Teams including VoIP calls, group calls, IVR flows, an...53.1Zoom Auto Dialer APIThe Zoom Auto Dialer API enables developers to programmatically manage call lists and prospect data for aut...50.8Zoom Phone APIThe Zoom Phone API allows developers to access Zoom Phone functionality to build private services or public...50.8Stream Video and Audio APICreate and manage audio/video calls and livestreams - get-or-create calls, manage call members and permissi...42.6
Thin 2 Limited public surface area
Agora Video Calling APIThe Agora Video Calling API enables real-time, interactive video communication with sub-200ms global latenc...28.2Agora Voice Calling APIThe Agora Voice Calling API embeds high-quality real-time voice chat into any application. Provides crystal...28.2
Emerging 1 Early or largely undocumented
Webex Calling APICloud calling capabilities including call control, dial plans, voicemail, voice portals, queues, hunt group...19.4

Score breakdown

Frequency
29.2
log-scaled weighted occurrences
Breadth
0.2
spread across providers
Quality lift
57.2
mean composite of providers using it
Cohesion
3.2
strength of nearest seed neighbor

Related tags

Meetings 5 co-occurrences Devices 5 co-occurrences Communications 5 co-occurrences Message 5 co-occurrences Collaboration 6 co-occurrences Messaging 7 co-occurrences User 5 co-occurrences Webhook 5 co-occurrences

Where this tag comes from

Api tag8
Provider tag4

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/calling"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/calling"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/calling/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.