established · 0.4 capability schema

Event-Driven

Score 25.6 / 100 40 providers +32 via APIs 44 APIs Search apis.io →

Providers using this tag (40)

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

Exemplar 5 Complete, well-documented, and agent-ready
Oracle Cloud InfrastructureCloud ComputingEnterprise CloudInfrastructure-as-a-ServiceOracle9 APIs76.9SvixWebhookWebhooks As A ServiceWebhook DeliveryWebhook Sending1 API76.7Virto CommerceB2B eCommerceCatalog ManagementOrder ManagementPricing15 APIs71.4Microsoft Azure FunctionsAzureCloudCompute1 API69.4GraviteeAPI GatewayAPI ManagementAccess ManagementIdentity2 APIs67.3
Strong 6 Solid coverage with minor gaps
Amazon EventBridge PipesAmazon Web ServicesIntegrationMessaging1 API61.7Amazon EventBridge SchedulerAmazon Web ServicesCronScheduling1 API61.7HookdeckWebhookEvent GatewaysGatewaysEvent1 API60.8Amazon EventBridgeAmazon Web ServicesEvent BusEvent1 API60.7InngestAI AgentsAgentKitBackground JobsConnect1 API60.7Cloudflare QueuesMessagingMessage QueueServerlessWorkers1 API55.0
Developing 10 Usable, with meaningful gaps to close
AklivityAI GatewayAPI GatewayAgent InfrastructureApache Kafka4 APIs53.2KestraAutomationData PipelineOrchestration1 API51.1Microsoft Azure Integration ServicesAPI ManagementEnterpriseIntegration6 APIs49.3KnativeAuto-ScalingCloud-NativeGraduated2 APIs48.4Google Cloud FunctionsFunctionsGoogle CloudServerless1 API47.1KEDAAuto-ScalingCNCFGraduated5 APIs46.9AsyncAPILinux FoundationMessagingStandards1 API45.7Google Cloud EventarcEventGoogle CloudMessaging1 API43.8ApteanCompanyManufacturingERPSupply Chain2 APIs40.4Azure Event GridEventingPub-SubMessaging1 API40.3
Thin 13 Limited public surface area
WazoTelephonyVoIPUnified CommunicationsUCaaS25 APIs38.9Google Cloud Pub/SubGoogle CloudMessagingPub-Sub1 API38.8Google Pub/SubCloudGoogle CloudMessaging1 API38.1Axon FrameworkCQRSEvent SourcingJava1 API34.3Spring IntegrationAMQPEnterprise IntegrationIntegration Patterns2 APIs33.4Apache EventMeshApacheCloudEventsMessaging1 API32.6Conductor OSSAI AgentsDurable ExecutionMicroservices1 API32.6Vert.xFrameworkJavaJVM7 APIs32.0Spring Cloud StreamApache KafkaAsyncAPIJava3 APIs30.2EventsEventEvent StreamingMessaging18 APIs29.210x Banking Technology ServicesFinancial ServicesBankingCore BankingCloud-Native1 API28.7Apache KafkaDistributed SystemsMessagingReal-Time5 APIs28.0Apache OpenWhiskCloud-NativeFunction-as-a-ServiceServerless6 APIs27.1
Emerging 4 Early or largely undocumented
Netflix ConductorMicroservicesNetflixOpen Source1 API21.4EventuateCQRSDistributed DataEvent Sourcing1 API21.3MassTransit.NETMessage BusMessaging1 API18.5Web MethodsCompanyIntegrationiPaaSAPI Management12.4
Minimal 2 Almost no public developer surface
Event-Driven ArchitectureArchitectureAsyncAPIAsynchronousCloudEvents3.9Reactive ProgrammingAsynchronousReactive ProgrammingStreams1.6

APIs with this tag (42)

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 5 Complete, well-documented, and agent-ready
Salesforce Platform Events APISalesforce Platform Events enables event-driven integration architectures built on the Salesforce platform....91.0Amazon DynamoDB Streams APIAPI for capturing and processing change data from DynamoDB tables in near real-time, providing time-ordered...80.3IBM Cloud FunctionsRun lightweight code that executes application logic in a scalable way using an event-driven serverless com...71.3Oracle Siebel Event Pub/Sub APIEvent-driven integration framework enabling real-time communication between Siebel CRM and external systems...70.4Azure Functions Runtime APIThe Azure Functions host runtime provides HTTP endpoints for function invocation, admin operations, host st...69.4
Strong 4 Solid coverage with minor gaps
Red Hat Build of Apicurio Registry APIREST API for managing schemas and API design artifacts in a schema registry, supporting formats including A...65.1Raygun Outbound WebhooksOutbound webhook surface that POSTs JSON events to a customer-configured HTTPS endpoint when error notifica...61.6Axway Amplify StreamsAxway Amplify Streams provides a real-time event streaming API platform enabling publishers to push data up...58.5Fasten Connect WebhooksFasten Connect emits HMAC-verified webhook events to notify integrators of asynchronous operations such as ...56.1
Developing 16 Usable, with meaningful gaps to close
Ballerina Triggers APISearch the event triggers and listeners declared inside packages published to Ballerina Central — the inbou...53.9Adobe I/O EventsAdobe I/O Events provides an event-driven webhook infrastructure for subscribing to changes across Adobe se...53.4SAP Event Mesh APIMessaging APIs for event-driven architecture supporting AMQP, MQTT, and REST protocols.53.4Zilla GatewayZilla is a stateless, cloud-native multi-protocol edge and service proxy that enables seamless access to Ap...53.2ZillaBaseZillaBase is an event-driven backend framework for the next generation of web, mobile, and AI applications,...53.2Buildxact WebhooksBuildxact's webhook surface lets partner and customer integrations receive real-time notifications when eve...51.5Luciq WebhooksOutbound HTTP POST webhooks deliver Bugs, Crashes, and APM events to a customer-configured callback URL. Re...51.0Azure Web PubSub Client and Upstream EventsAsyncAPI 2.6 description of the Azure Web PubSub client WebSocket subprotocols (json.webpubsub.azure.v1 and...50.6TraceLink OPUS Platform Event APIThe OPUS Platform exposes one /api/events endpoint per environment. Every operation is a POST to that endpo...49.6Red Hat OpenShift Serverless (Knative) APIOpenShift Serverless, based on Knative, enables deploying and managing event-driven serverless workloads on...49.5Azure Event GridAzure Event Grid is a highly scalable, fully managed publish-subscribe event distribution service. It enabl...49.3Knative FunctionsKnative Functions enables developers to create, build, and deploy stateless, event-driven functions as Knat...48.4Workday Orchestrate APILow-code integration and automation platform for building event-driven and batch integrations using a visua...48.1Argo Events APIKubernetes-native API for the Argo Events event-driven automation framework. Exposes CRD-based resources in...47.6AsyncAPI SpecificationThe AsyncAPI Specification is an open standard for describing asynchronous and event-driven APIs. It provid...45.7Rollbar WebhooksRollbar supports outbound webhook notifications for real-time event-driven integrations. Webhooks deliver p...43.3
Thin 11 Limited public surface area
Wazo Websocket Event Stream (wazo-websocketd)WebSocket gateway onto the Wazo internal event bus. An authenticated client subscribes to named platform ev...38.9KrakenD Async AgentThe KrakenD Async Agent enables event-driven API consumption by connecting KrakenD to message brokers and e...37.1Ansible Event-Driven Automation APIAPI for Event-Driven Ansible (EDA) Controller enabling management of rulebooks, activations, and event sour...35.0Honeybadger Outbound Webhook NotificationsOutbound webhook notification surface delivered by Honeybadger to subscriber URLs configured via Project Se...34.3Statuspage Webhook NotificationsOutbound webhook notifications Statuspage POSTs to subscriber endpoints for component status changes, incid...33.6Dropbox Sign Events and Callbacks APIOutbound event / callback surface for Dropbox Sign. The platform POSTs JSON event payloads (wrapped in a `m...33.5Apache EventMesh Messaging APIEvent-driven messaging via TCP, HTTP, and gRPC protocols. Events follow the CloudEvents specification. Supp...32.6Vert.x CoreThe core toolkit for building reactive, event-driven applications on the JVM. Provides the event loop, vert...32.0Tenderly Web3 Actions APIDeploy and manage serverless JavaScript/TypeScript functions triggered by on-chain or off-chain events, ena...31.7SimCorp Dimension Streaming APIReal-time streaming API for delivering live investment data, market updates and event-driven notifications ...30.6Spring Cloud Stream Core APICore programmatic API for building message-driven microservice applications. Provides functional programmin...30.2
Emerging 6 Early or largely undocumented
Northern Trust Event Notification APIThe Event Notification service in the Northern Trust API Store lets registered clients subscribe to and rec...25.4MassTransit Messaging FrameworkMassTransit provides a consistent abstraction on top of message transports like RabbitMQ, Azure Service Bus...18.5I/O Multiplexing APISystem calls for monitoring multiple file descriptors for readiness, enabling event-driven and non-blocking...16.3Denticon Events and Webhooks APIEvent-driven architecture that pushes synchronized patient and appointment updates to partner-registered we...14.6EZLynx Events and Webhooks APIConsume EZLynx's event-driven layer - webhook notifications delivered in XML or JSON when platform data cha...14.0Smile CDR SubscriptionsFHIR Subscription (R4) and Subscription / SubscriptionTopic (R4B/R5 backport) support for push notification...12.0

Companies reaching this through an API (32)

These companies publish an API, specification or operation carrying “Event-Driven” 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.

Adobe Creative Cloud Amazon DynamoDB Ansible Automation Platform Argo Axway Azure Web PubSub Ballerina Buildxact Denticon Dropbox Sign EZLynx Fasten Health Grubhub Honeybadger IBM Instabug (Luciq) KrakenD Northern Trust Oracle Siebel Raygun Red Hat Red Hat OpenShift Rollbar Salesforce SAP SimCorp Dimension Smile Digital Health Statuspage Tenderly TraceLink UNIX System Call Workday Studio

Score breakdown

Frequency
51.7
log-scaled weighted occurrences
Breadth
1.0
spread across providers
Quality lift
51.9
mean composite of providers using it
Cohesion
13.4
strength of nearest seed neighbor

Where this tag sits

40 providers carry this tag directly, and 64 counting the 3 narrower tags below — 24 more to reach.

Event Streaming 21 providers CloudEvents 7 providers Eventing 4 providers

Related tags

Pub-Sub 12 co-occurrences CloudEvents 7 co-occurrences Serverless 19 co-occurrences Event Streaming 8 co-occurrences Kafka 7 co-occurrences AsyncAPI 7 co-occurrences API Management 9 co-occurrences Topic 7 co-occurrences

Where this tag comes from

Provider tag40
Api tag44

Cohort brief

Auto-generated

The 38 providers in the APIs.io catalog tagged Event-Driven, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
38
of 40 in the catalog
Mean Kin Score
44.3
+21.4 vs catalog 22.9
Mean Agent Readiness
22.3
+10.4 vs catalog 11.9
Spread
12.4–76.7
median 42.1 · σ 16.5
How the 38 split by band
Exemplar 4Strong 7Developing 10Thin 13Emerging 4Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 45.7 17.6 +28.1 38
Developer Ergonomics 48.6 23.2 +25.4 38
Operational Transparency 29.9 13.7 +16.2 38
Access Clarity 39.3 26.5 +12.8 38
Contract Governance 18.6 6.3 +12.3 38
Discoverability 65.8 58.1 +7.7 38

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
ArtifactThis cohortCatalogDifference
MCP server (any) 16% 14% +2
MCP server (first-party) 11% 12% -1
Agent Skills 0% 0% 0
OAuth scopes 18% 11% +7
Security 100% 98% +2
Arazzo workflows 18% 2% +16
Governance rules 68% 14% +54

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. 1 Svix 76.7
  2. 2 Oracle Cloud Infrastructure 76.4
  3. 3 Virto Commerce 71.4
  4. 4 Microsoft Azure Functions 69.4
  5. 5 Gravitee 65.2
  6. 6 Amazon EventBridge Pipes 61.7
  7. 7 Amazon EventBridge Scheduler 61.7
  8. 8 Hookdeck 60.8
  9. 9 Amazon EventBridge 60.7
  10. 10 Inngest 60.7
Top by Agent Readiness
  1. 1 Svix 49.4
  2. 2 Oracle Cloud Infrastructure 49.3
  3. 3 Amazon EventBridge Scheduler 37.1
  4. 4 Virto Commerce 35.6
  5. 5 Wazo 35
  6. 6 Amazon EventBridge Pipes 30.6
  7. 7 Hookdeck 30.5
  8. 8 KEDA 30
  9. 9 Microsoft Azure Functions 29.7
  10. 10 Gravitee 29.6
All 40 members of this roster resolve to a provider in the catalog; 38 carry a score (95%). The figures above describe the scored members only.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.

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

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