Work with this as data
Every API 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 apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.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.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/netflix-eureka-instances-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
OpenAPI Specification
openapi: 3.1.0
info:
title: Netflix Eureka REST Applications Instances API
description: Eureka REST operations for service registration, discovery, and instance management. Eureka is a REST-based service for locating services for the purpose of load balancing and failover of middle-tier servers.
version: 2.0.0
contact:
name: Netflix OSS
url: https://github.com/Netflix/eureka
license:
name: Apache 2.0
url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:8761/eureka
description: Local Eureka server
- url: https://{eureka_host}:{port}/eureka
description: Custom Eureka server
variables:
eureka_host:
default: localhost
port:
default: '8761'
tags:
- name: Instances
description: Manage service instances
paths:
/apps/{appId}:
post:
operationId: registerInstance
summary: Register a new application instance
description: Registers a new instance for the specified application.
tags:
- Instances
parameters:
- name: appId
in: path
required: true
schema:
type: string
description: Application name
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
instance:
$ref: '#/components/schemas/InstanceInfo'
application/xml:
schema:
$ref: '#/components/schemas/InstanceInfo'
responses:
'204':
description: Instance registered successfully
/apps/{appId}/{instanceId}:
get:
operationId: getInstance
summary: Get a specific instance
description: Returns information about a specific instance of an application.
tags:
- Instances
parameters:
- name: appId
in: path
required: true
schema:
type: string
- name: instanceId
in: path
required: true
schema:
type: string
description: Instance ID (typically hostname)
responses:
'200':
description: Instance information
content:
application/json:
schema:
type: object
properties:
instance:
$ref: '#/components/schemas/InstanceInfo'
application/xml:
schema:
$ref: '#/components/schemas/InstanceInfo'
'404':
description: Instance not found
delete:
operationId: deregisterInstance
summary: Deregister an instance
description: Removes the specified instance from the registry.
tags:
- Instances
parameters:
- name: appId
in: path
required: true
schema:
type: string
- name: instanceId
in: path
required: true
schema:
type: string
responses:
'200':
description: Instance deregistered
'404':
description: Instance not found
put:
operationId: sendHeartbeat
summary: Send heartbeat
description: Sends a heartbeat to indicate the instance is still alive. Must be sent periodically to avoid expiration (default 90 seconds).
tags:
- Instances
parameters:
- name: appId
in: path
required: true
schema:
type: string
- name: instanceId
in: path
required: true
schema:
type: string
- name: status
in: query
schema:
type: string
enum:
- UP
- DOWN
- STARTING
- OUT_OF_SERVICE
- UNKNOWN
description: Overridden status value
- name: lastDirtyTimestamp
in: query
schema:
type: string
description: Last dirty timestamp for conflict resolution
- name: overriddenstatus
in: query
schema:
type: string
enum:
- UP
- DOWN
- STARTING
- OUT_OF_SERVICE
- UNKNOWN
description: Overridden status
responses:
'200':
description: Heartbeat acknowledged
'404':
description: Instance not found (re-register required)
/apps/{appId}/{instanceId}/status:
put:
operationId: updateInstanceStatus
summary: Update instance status override
description: Updates the status of an instance (admin operation to take out of service).
tags:
- Instances
parameters:
- name: appId
in: path
required: true
schema:
type: string
- name: instanceId
in: path
required: true
schema:
type: string
- name: value
in: query
required: true
schema:
type: string
enum:
- UP
- DOWN
- STARTING
- OUT_OF_SERVICE
- UNKNOWN
description: New status value
- name: lastDirtyTimestamp
in: query
schema:
type: string
responses:
'200':
description: Status updated
'404':
description: Instance not found
'500':
description: Status update failed
delete:
operationId: removeInstanceStatusOverride
summary: Remove status override
description: Removes the status override and reverts to the instance's actual status.
tags:
- Instances
parameters:
- name: appId
in: path
required: true
schema:
type: string
- name: instanceId
in: path
required: true
schema:
type: string
- name: lastDirtyTimestamp
in: query
schema:
type: string
responses:
'200':
description: Status override removed
'404':
description: Instance not found
/apps/{appId}/{instanceId}/metadata:
put:
operationId: updateInstanceMetadata
summary: Update instance metadata
description: Updates the metadata map for an instance.
tags:
- Instances
parameters:
- name: appId
in: path
required: true
schema:
type: string
- name: instanceId
in: path
required: true
schema:
type: string
requestBody:
content:
application/json:
schema:
type: object
additionalProperties:
type: string
responses:
'200':
description: Metadata updated
'404':
description: Instance not found
/instances/{instanceId}:
get:
operationId: getInstanceById
summary: Get instance by ID
description: Returns instance information by unique instance ID (across all apps).
tags:
- Instances
parameters:
- name: instanceId
in: path
required: true
schema:
type: string
responses:
'200':
description: Instance information
content:
application/json:
schema:
type: object
properties:
instance:
$ref: '#/components/schemas/InstanceInfo'
application/xml:
schema:
$ref: '#/components/schemas/InstanceInfo'
'404':
description: Instance not found
components:
schemas:
InstanceInfo:
type: object
required:
- hostName
- app
- vipAddress
- dataCenterInfo
properties:
instanceId:
type: string
description: Unique instance ID
hostName:
type: string
description: Hostname of the instance
app:
type: string
description: Application name
ipAddr:
type: string
description: IP address
status:
type: string
enum:
- UP
- DOWN
- STARTING
- OUT_OF_SERVICE
- UNKNOWN
description: Current instance status
overriddenStatus:
type: string
enum:
- UP
- DOWN
- STARTING
- OUT_OF_SERVICE
- UNKNOWN
port:
type: object
properties:
$:
type: integer
description: Port number
'@enabled':
type: string
description: Whether port is enabled
securePort:
type: object
properties:
$:
type: integer
'@enabled':
type: string
countryId:
type: integer
dataCenterInfo:
type: object
required:
- '@class'
- name
properties:
'@class':
type: string
description: Datacenter info class
name:
type: string
enum:
- Netflix
- Amazon
- MyOwn
metadata:
type: object
properties:
ami-launch-index:
type: string
local-hostname:
type: string
availability-zone:
type: string
instance-id:
type: string
public-ipv4:
type: string
public-hostname:
type: string
ami-manifest-path:
type: string
local-ipv4:
type: string
hostname:
type: string
ami-id:
type: string
instance-type:
type: string
leaseInfo:
type: object
properties:
renewalIntervalInSecs:
type: integer
description: Client heartbeat interval (default 30)
durationInSecs:
type: integer
description: Duration until expiry without heartbeat (default 90)
registrationTimestamp:
type: integer
format: int64
lastRenewalTimestamp:
type: integer
format: int64
evictionTimestamp:
type: integer
format: int64
serviceUpTimestamp:
type: integer
format: int64
metadata:
type: object
additionalProperties:
type: string
description: Application-specific metadata
homePageUrl:
type: string
format: uri
statusPageUrl:
type: string
format: uri
healthCheckUrl:
type: string
format: uri
secureHealthCheckUrl:
type: string
format: uri
vipAddress:
type: string
description: Virtual host name (VIP address)
secureVipAddress:
type: string
description: Secure VIP address
isCoordinatingDiscoveryServer:
type: string
description: Whether this is a coordinating discovery server
lastUpdatedTimestamp:
type: string
lastDirtyTimestamp:
type: string
actionType:
type: string
enum:
- ADDED
- MODIFIED
- DELETED