emerging · 0.6

SIP

Score 22.4 / 100 16 providers 23 APIs Search apis.io →
Variants seen in the corpus: SIPsip

Providers using this tag (16)

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

Exemplar 1 Complete, well-documented, and agent-ready
Zoom PhoneZoom Phone is the cloud PBX / UCaaS voice product of Zoom Communications, headquartered in San Jose, Califo...3 APIs72.5
Strong 3 Solid coverage with minor gaps
OpenAIAPIs for accessing OpenAI's artificial intelligence models including GPT, DALL-E, Whisper, and Embeddings.51 APIs64.7SynthflowSynthflow is an enterprise-ready no-code Voice AI platform for automating phone conversations at scale. The...8 APIs62.2DailyDaily is a Y Combinator-backed developer platform providing real-time audio and video APIs and client SDKs ...13 APIs57.1
Developing 6 Usable, with meaningful gaps to close
NfonNFON AG is a European provider of cloud telephony and unified communications (UCaaS/CPaaS), headquartered i...52 APIs52.6ZoomZoom is a communications platform that allows users to connect with video, audio, phone, and chat. The Zoom...47 APIs50.8FixieFixie is the company behind Ultravox Realtime, a speech-native voice AI platform for building natural, low-...14 APIs50.2PlivoPlivo is a global communications platform offering programmable Voice, Messaging (SMS/MMS/WhatsApp), SIP Tr...24 APIs44.4WazoWazo Communication Inc. builds the Wazo Platform, an open-source (GPL-3.0) programmable unified-communicati...14 APIs42.4Cisco ExpresswayAPI definitions for Cisco Expressway, a session border controller and firewall traversal solution for Unifi...18 APIs41.1
Thin 5 Limited public surface area
SubspaceSubspace was a real-time network-as-a-service platform delivering a dedicated, performance-optimized global...3 APIs37.2Vonage Video APIVonage Video API (formerly OpenTok / TokBox) is a programmable live video platform for building real-time i...9 APIs35.4Sarj AI Developer APISarj.ai is a voice and chat AI agent platform built for Arabic, English and Urdu, focused on the Saudi and ...27 APIs33.3LiveKitLiveKit is an open-source WebRTC platform with a managed Cloud offering. APIs cover Rooms, Participants, Tr...6 APIs32.9JitsiJitsi is a collection of free and open-source projects for secure, simple, and scalable real-time video con...10 APIs32.2
Emerging 1 Early or largely undocumented
Callab AICallab AI, built by Clusterlabs, is a cloud-based voice AI platform that connects directly to legacy on-pre...1 API16.0

APIs with this tag (23)

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 →

Strong 1 Solid coverage with minor gaps
OpenAI Realtime APIThe Realtime API from OpenAI — 9 operation(s) for realtime.64.7
Developing 19 Usable, with meaningful gaps to close
Zoom CRC APIThe Zoom Conference Room Connector API allows developers to programmatically manage Cisco and Polycom confe...50.8Fixie sip APIThe sip API from Fixie — 3 operation(s) for sip.50.2Plivo Endpoint APIThe Plivo Endpoint API manages SIP/WebRTC endpoints (username/password/alias) used by softphones, browser S...44.4Plivo SIP Authentication APIThe Plivo SIP Authentication API issues per-account credentials used by SIP endpoints to register against P...44.4Plivo Zentrunk SIP Trunking APIThe Plivo Zentrunk SIP Trunking API manages termination and origination SIP trunks — outbound trunks (crede...44.4Wazo Asterisk Manager Interface API (wazo-amid)A thin REST facade over the Asterisk Manager Interface. Executes AMI actions and Asterisk CLI commands, and...42.4Wazo Authentication API (wazo-auth)Authentication and authorisation service for the Wazo Platform. Issues and validates X-Auth-Token tokens (u...42.4Wazo Call Centre Agent API (wazo-agentd)Call-centre agent state API. Logs agents in and out of queues by agent id, agent number or extension, pause...42.4Wazo Call Control / Application API (wazo-calld)Runtime call control for the Wazo Platform. Originate, answer, hold, mute, transfer, relocate, record and h...42.4Wazo Call Detail Records API (wazo-call-logd)Call Detail Record and contact-centre reporting API. Retrieves and exports CDRs (JSON, CSV) for a tenant or...42.4Wazo Configuration API (wazo-confd)The configuration API for a Wazo stack and the largest of its microservice contracts. Manages users, lines,...42.4Wazo Directory & Contacts API (wazo-dird)Directory lookup, reverse lookup and personal-contact service. Aggregates multiple directory backends (CSV,...42.4Wazo Initial Setup API (wazo-setupd)Initial system setup API. Performs the one-time bootstrap of a freshly installed Wazo stack — engine config...42.4Wazo Phone Directory & Service API (wazo-phoned)Directory and service endpoints consumed directly by desk phones. Serves vendor-specific XML/HTML phone dir...42.4Wazo Phone Provisioning API (wazo-provd)Phone auto-provisioning service. Manages device plugins, configuration templates, device registrations, DHC...42.4Wazo Plugin Management API (wazo-plugind)Plugin management microservice. Installs, upgrades and uninstalls Wazo plugins from a git or market source,...42.4Wazo Presence & Chat API (wazo-chatd)Presence and chat microservice. Tracks user, line and refresh-token presence (including Microsoft Teams pre...42.4Wazo Webhooks API (wazo-webhookd)Webhook subscription service. Connects to the Wazo event bus and relays platform events to external HTTP en...42.4Cisco Expressway SIP APISIP protocol configuration41.1
Thin 3 Limited public surface area
Vonage Video API SIP APIDial SIP/PSTN endpoints into a session and play DTMF.35.4Sarj AI Developer API Sip APIThe sip API from Sarj AI Developer API — 7 operation(s) for sip.33.3LiveKit SIP (Telephony) APISIP integration for inbound and outbound PSTN calls bridged into LiveKit rooms.32.9

Score breakdown

Frequency
43.6
log-scaled weighted occurrences
Breadth
0.4
spread across providers
Quality lift
54.3
mean composite of providers using it
Cohesion
3.3
strength of nearest seed neighbor

Related tags

WebRTC 8 co-occurrences Phone Numbers 5 co-occurrences Telephony 7 co-occurrences Calls 5 co-occurrences Voice 7 co-occurrences Real-Time 6 co-occurrences Video 5 co-occurrences Messaging 5 co-occurrences

Where this tag comes from

Provider tag10
Api tag23
Openapi tag4
Openapi op tag20

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/sip"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/sip"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/sip/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.