established · 0.0 capability schema

Event-Driven

Score 25.2 / 100 42 providers +37 via APIs 55 APIs Search apis.io →

Providers using this tag (42)

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

Exemplar 4 Complete, well-documented, and agent-ready
SvixWebhookWebhooks As A ServiceWebhook DeliveryWebhook Sending1 API80.4Virto CommerceB2B eCommerceCatalog ManagementOrder ManagementPricing14 APIs76.0Oracle Cloud InfrastructureCloud ComputingEnterprise CloudInfrastructure-as-a-ServiceOracle9 APIs74.7Microsoft Azure FunctionsAzureCloudCompute1 API68.8
Strong 8 Solid coverage with minor gaps
Amazon LambdaComputeFunction-as-a-ServiceFunctions1 API61.8Amazon EventBridge PipesAmazon Web ServicesIntegrationMessaging1 API60.9Amazon EventBridge SchedulerAmazon Web ServicesCronScheduling1 API60.9InngestAI AgentsAgentKitBackground JobsConnect1 API60.4Amazon EventBridgeAmazon Web ServicesEvent BusEvent1 API59.9GraviteeAPI GatewayAPI ManagementAccess ManagementIdentity2 APIs56.8Cloudflare QueuesMessagingMessage QueueServerlessWorkers1 API56.2HookdeckWebhookEvent GatewaysGatewaysEvent1 API55.0
Developing 9 Usable, with meaningful gaps to close
AklivityAI GatewayAPI GatewayAgent InfrastructureApache Kafka4 APIs52.2KestraAutomationData PipelineOrchestration1 API50.7Microsoft Azure Integration ServicesAPI ManagementEnterpriseIntegration6 APIs50.3KnativeAuto-ScalingCloud-NativeGraduated2 APIs49.9KEDAAuto-ScalingCNCFGraduated5 APIs48.1Google Cloud FunctionsFunctionsGoogle CloudServerless1 API45.0AsyncAPILinux FoundationMessagingStandards1 API44.8Google Cloud EventarcEventGoogle CloudMessaging1 API43.9ApteanCompanyManufacturingERPSupply Chain1 API39.7
Thin 15 Limited public surface area
Azure Event GridEventingPub-SubMessaging1 API38.9WazoTelephonyVoIPUnified CommunicationsUCaaS25 APIs38.3Google Pub/SubCloudGoogle CloudMessaging1 API38.1Google Cloud Pub/SubGoogle CloudMessagingPub-Sub1 API37.9Axon FrameworkCQRSEvent SourcingJava1 API36.4Conductor OSSAgentic AIDurable ExecutionMicroservices1 API34.6Spring IntegrationAMQPEnterprise IntegrationIntegration Patterns2 APIs34.4Apache EventMeshApacheCloudEventsMessaging1 API33.7Vert.xFrameworkJavaJVM7 APIs31.4Scalable Software and SystemsAPI-FirstArchitecture PatternsCQRSDistributed Systems1 API30.8Spring Cloud StreamApache KafkaAsyncAPIJava3 APIs30.710x Banking Technology ServicesFinancial-ServicesBankingCore BankingCloud-Native1 API30.0Apache KafkaDistributed SystemsMessagingReal-Time5 APIs29.3EventsEventEvent StreamingMessaging18 APIs27.3Apache OpenWhiskCloud-NativeFunction-as-a-ServiceServerless6 APIs26.5
Emerging 4 Early or largely undocumented
EventuateCQRSDistributed DataEvent Sourcing1 API24.2Netflix ConductorMicroservicesNetflixOpen-Source1 API24.2MassTransit.NETMessage BusMessaging1 API20.5Web MethodsCompanyIntegrationiPaaSAPI Management12.3
Minimal 2 Almost no public developer surface
Event-Driven ArchitectureArchitectureAsyncAPIAsynchronousCloudEvents6.4Reactive ProgrammingAsynchronousReactive ProgrammingStreams4.1

APIs with this tag (55)

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 4 Complete, well-documented, and agent-ready
Salesforce Platform Events APISalesforce Platform Events enables event-driven integration architectures built on the Salesforce platform....87.5Amazon DynamoDB Streams APIAPI for capturing and processing change data from DynamoDB tables in near real-time, providing time-ordered...79.4Azure Functions Runtime APIThe Azure Functions host runtime provides HTTP endpoints for function invocation, admin operations, host st...68.8Oracle Siebel Event Pub/Sub APIEvent-driven integration framework enabling real-time communication between Siebel CRM and external systems...67.6
Strong 6 Solid coverage with minor gaps
Raygun Outbound WebhooksOutbound webhook surface that POSTs JSON events to a customer-configured HTTPS endpoint when error notifica...61.9Fasten Connect WebhooksFasten Connect emits HMAC-verified webhook events to notify integrators of asynchronous operations such as ...60.4IBM Cloud FunctionsRun lightweight code that executes application logic in a scalable way using an event-driven serverless com...60.0Grubhub Connect WebhooksThe egress event contract for Grubhub Connect, published as an OpenAPI 3.1.0 webhooks-only document: Delive...59.4Grubhub Reporting WebhooksThe egress event contract for merchant report exports, published as an OpenAPI 3.1.0 webhooks-only document...59.4Red Hat Build of Apicurio Registry APIREST API for managing schemas and API design artifacts in a schema registry, supporting formats including A...57.5
Developing 17 Usable, with meaningful gaps to close
Ballerina Triggers APISearch the event triggers and listeners declared inside packages published to Ballerina Central — the inbou...53.6Adobe I/O EventsAdobe I/O Events provides an event-driven webhook infrastructure for subscribing to changes across Adobe se...52.8Buildxact WebhooksBuildxact's webhook surface lets partner and customer integrations receive real-time notifications when eve...52.5Zilla GatewayZilla is a stateless, cloud-native multi-protocol edge and service proxy that enables seamless access to Ap...52.2ZillaBaseZillaBase is an event-driven backend framework for the next generation of web, mobile, and AI applications,...52.2TraceLink OPUS Platform Event APIThe OPUS Platform exposes one /api/events endpoint per environment. Every operation is a POST to that endpo...52.1Luciq WebhooksOutbound HTTP POST webhooks deliver Bugs, Crashes, and APM events to a customer-configured callback URL. Re...52.0Azure Web PubSub Client and Upstream EventsAsyncAPI 2.6 description of the Azure Web PubSub client WebSocket subprotocols (json.webpubsub.azure.v1 and...51.4Azure Event GridAzure Event Grid is a highly scalable, fully managed publish-subscribe event distribution service. It enabl...50.3Knative FunctionsKnative Functions enables developers to create, build, and deploy stateless, event-driven functions as Knat...49.9Axway Amplify StreamsAxway Amplify Streams provides a real-time event streaming API platform enabling publishers to push data up...49.4Red Hat OpenShift Serverless (Knative) APIOpenShift Serverless, based on Knative, enables deploying and managing event-driven serverless workloads on...49.1Argo Events APIKubernetes-native API for the Argo Events event-driven automation framework. Exposes CRD-based resources in...48.9SAP Event Mesh APIMessaging APIs for event-driven architecture supporting AMQP, MQTT, and REST protocols.48.8Workday Orchestrate APILow-code integration and automation platform for building event-driven and batch integrations using a visua...46.8AsyncAPI SpecificationThe AsyncAPI Specification is an open standard for describing asynchronous and event-driven APIs. It provid...44.8Rollbar WebhooksRollbar supports outbound webhook notifications for real-time event-driven integrations. Webhooks deliver p...43.7
Thin 21 Limited public surface area
KrakenD Async AgentThe KrakenD Async Agent enables event-driven API consumption by connecting KrakenD to message brokers and e...39.0Wazo Websocket Event Stream (wazo-websocketd)WebSocket gateway onto the Wazo internal event bus. An authenticated client subscribes to named platform ev...38.3Honeybadger Outbound Webhook NotificationsOutbound webhook notification surface delivered by Honeybadger to subscriber URLs configured via Project Se...35.3Statuspage Webhook NotificationsOutbound webhook notifications Statuspage POSTs to subscriber endpoints for component status changes, incid...35.1Ansible Event-Driven Automation APIAPI for Event-Driven Ansible (EDA) Controller enabling management of rulebooks, activations, and event sour...33.9Apache EventMesh Messaging APIEvent-driven messaging via TCP, HTTP, and gRPC protocols. Events follow the CloudEvents specification. Supp...33.7AWS Lambda APIAmazon Web Services Lambda API for creating, managing, invoking, and monitoring serverless functions. Core ...33.7Dropbox Sign Events and Callbacks APIOutbound event / callback surface for Dropbox Sign. The platform POSTs JSON event payloads (wrapped in a `m...33.7Knative APIKnative provides Kubernetes-based platform APIs for deploying and scaling event-driven serverless workloads...33.7Tenderly Web3 Actions APIDeploy and manage serverless JavaScript/TypeScript functions triggered by on-chain or off-chain events, ena...32.9Apache Kafka REST Proxy APIThe Confluent REST Proxy provides a RESTful interface to an Apache Kafka cluster, making it easy to produce...32.8KEDA (Kubernetes Event-Driven Autoscaling) APIKEDA is a Kubernetes-based event-driven autoscaling component and CNCF graduate project. It provides fine-g...32.8RabbitMQ Management HTTP APIRabbitMQ is a widely-deployed open-source message broker implementing AMQP, MQTT, STOMP, and other messagin...32.8SimCorp Dimension Streaming APIReal-time streaming API for delivering live investment data, market updates and event-driven notifications ...32.1Vert.x CoreThe core toolkit for building reactive, event-driven applications on the JVM. Provides the event loop, vert...31.4Apache Kafka Admin APIApache Kafka's Admin REST API enables creating and managing topics, partitions, consumer groups, and cluste...30.8CloudEvents APICloudEvents is a CNCF specification for describing event data in a common way. It defines a core data model...30.8Dapr APIDapr (Distributed Application Runtime) provides building block APIs for service invocation, pub/sub messagi...30.8NATS Management APINATS is a lightweight, high-performance messaging system for distributed applications. Its management API p...30.8Spring Cloud Stream Core APICore programmatic API for building message-driven microservice applications. Provides functional programmin...30.7Northern Trust Event Notification APIThe Event Notification service in the Northern Trust API Store lets registered clients subscribe to and rec...27.6
Emerging 6 Early or largely undocumented
AsyncAPI SpecificationAsyncAPI is the open standard for describing event-driven and message-driven APIs across protocols such as ...22.5MassTransit Messaging FrameworkMassTransit provides a consistent abstraction on top of message transports like RabbitMQ, Azure Service Bus...20.5I/O Multiplexing APISystem calls for monitoring multiple file descriptors for readiness, enabling event-driven and non-blocking...17.5EZLynx Events and Webhooks APIConsume EZLynx's event-driven layer - webhook notifications delivered in XML or JSON when platform data cha...14.3Denticon Events and Webhooks APIEvent-driven architecture that pushes synchronized patient and appointment updates to partner-registered we...14.2Smile CDR SubscriptionsFHIR Subscription (R4) and Subscription / SubscriptionTopic (R4B/R5 backport) support for push notification...11.5
Unrated 1 Not yet scored
AsyncAPI InitiativeAsyncAPI is an open specification standard for event-driven and message-based APIs. AsyncAPI documents defi...

Companies reaching this through an API (37)

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 API Specifications 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 Scalability Scalable Architecture Scalable Services SimCorp Dimension Smile Digital Health Statuspage Tenderly Test Specifications TraceLink UNIX System Call Workday Studio

Score breakdown

Frequency
52.9
log-scaled weighted occurrences
Breadth
1.2
spread across providers
Quality lift
48.2
mean composite of providers using it
Cohesion
13.3
strength of nearest seed neighbor

Related tags

Pub-Sub 13 co-occurrences Event Streaming 10 co-occurrences Serverless 21 co-occurrences CloudEvents 7 co-occurrences AsyncAPI 9 co-occurrences Kafka 7 co-occurrences API Management 9 co-occurrences CNCF 7 co-occurrences

Where this tag comes from

Provider tag42
Api tag55

Cohort brief

Auto-generated

The 40 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
40
all scored
Mean Kin Score
44.4
+20.4 vs catalog 24
Mean Agent Readiness
22.4
+10.0 vs catalog 12.4
Spread
12.3–80.4
median 41.8 · σ 16
How the 40 split by band
Exemplar 4Strong 8Developing 9Thin 15Emerging 4Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 50.3 20.1 +30.2 40
Developer Ergonomics 48.7 23.4 +25.3 40
Operational Transparency 29.5 14 +15.5 40
Contract Governance 19.4 6.5 +12.9 40
Access Clarity 38.3 26.5 +11.8 40
Discoverability 68.2 61 +7.2 40

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) 13% 10% +3
MCP server (first-party) 10% 13% -3
Agent Skills 0% 0% 0
OAuth scopes 18% 11% +7
Security 100% 96% +4
Arazzo workflows 20% 2% +18
Governance rules 70% 13% +57

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 80.4
  2. 2 Virto Commerce 76
  3. 3 Oracle Cloud Infrastructure 74.7
  4. 4 Microsoft Azure Functions 68.8
  5. 5 Amazon Lambda 61.8
  6. 6 Amazon EventBridge Pipes 60.9
  7. 7 Amazon EventBridge Scheduler 60.9
  8. 8 Inngest 60.4
  9. 9 Amazon EventBridge 59.9
  10. 10 Gravitee 56.8
Top by Agent Readiness
  1. 1 Svix 49.4
  2. 2 Oracle Cloud Infrastructure 49.3
  3. 3 Virto Commerce 37.7
  4. 4 Amazon EventBridge Scheduler 37.1
  5. 5 Wazo 35
  6. 6 Hookdeck 30.9
  7. 7 Amazon EventBridge Pipes 30.6
  8. 8 Gravitee 30.4
  9. 9 Microsoft Azure Functions 30
  10. 10 KEDA 30
All 42 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 20 September 2026, across 27620 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

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MCP server

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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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