Backstage
Backstage is an open-source developer portal platform created by Spotify. It provides a centralized software catalog, software templates (scaffolder), TechDocs, and a plugin ecosystem for building customizable developer portals. Backstage helps organizations manage their software ecosystem by cataloging services, APIs, resources, and infrastructure, and provides tooling for creating new projects from templates.
Backstage publishes 13 APIs on the APIs.io network, including Events System, Actions API, Authentication API, and 10 more. Tagged areas include Developer Portal, Internal Developer Platform, Software Catalog, and Open-Source.
The Backstage catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.
Backstage’s developer surface includes authentication, documentation, getting-started guide, engineering blog, changelog, and 12 more developer resources.
Kin Score
APIs 13
Individual APIs this provider publishes, each with its own machine-readable definition.
Backstage Events System
The Backstage Events system provides a publish-subscribe mechanism for broadcasting and consuming events within a Backstage instance. It enables plugins to emit events when sign...
Backstage Actions API
Endpoints for listing available scaffolder actions.
Backstage Authentication API
The Authentication API from Backstage — 4 operation(s) for authentication.
Backstage Authorization API
The Authorization API from Backstage — 2 operation(s) for authorization.
Backstage Documentation API
The Documentation API from Backstage — 2 operation(s) for documentation.
Backstage Entities API
Endpoints for managing and querying catalog entities.
Backstage Locations API
Endpoints for managing catalog locations (entity sources).
Backstage Metadata API
The Metadata API from Backstage — 2 operation(s) for metadata.
Backstage Search API
The Search API from Backstage — 1 operation(s) for search.
Backstage Sync API
The Sync API from Backstage — 1 operation(s) for sync.
Backstage Tasks API
Endpoints for creating and managing scaffolder tasks.
Backstage Templates API
Endpoints for template metadata and parameter schemas.
Backstage Token Verification API
The Token Verification API from Backstage — 1 operation(s) for token verification.
Scroll for all 13
Open Collections 19
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONBackstage Auth Actions API
OPEN COLLECTIONBackstage Auth API
OPEN COLLECTIONBackstage Auth Actions Authentication API
OPEN COLLECTIONBackstage Auth Actions Authorization API
OPEN COLLECTIONBackstage Catalog API
OPEN COLLECTIONBackstage Auth Actions Documentation API
OPEN COLLECTIONBackstage Auth Actions Entities API
OPEN COLLECTIONBackstage Auth Actions Locations API
OPEN COLLECTIONBackstage Auth Actions Metadata API
OPEN COLLECTIONBackstage Permissions API
OPEN COLLECTIONBackstage Scaffolder API
OPEN COLLECTIONBackstage Auth Actions Search API
OPEN COLLECTIONBackstage Search API
OPEN COLLECTIONBackstage Auth Actions Sync API
OPEN COLLECTIONBackstage Auth Actions Tasks API
OPEN COLLECTIONBackstage TechDocs API
OPEN COLLECTIONBackstage Auth Actions Templates API
OPEN COLLECTIONBackstage Auth Actions Token Verification API
OPEN COLLECTIONScroll for all 19
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Backstage Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Backstage Finops
FINOPSFeatures 7
Notable capabilities this provider offers.
Software Catalog
Central inventory of all software components, APIs, resources, systems, domains, groups, and users.
Software Templates (Scaffolder)
Bootstrap new projects, services, and components from customizable templates.
TechDocs
Render and serve MkDocs-based technical documentation alongside catalog entities.
Plugin Ecosystem
Extensible plugin architecture with 100+ open-source plugins for CI/CD, monitoring, cloud, and more.
Search
Full-text search across catalog entities, TechDocs, and any other indexed content.
Permissions Framework
Policy-based authorization with conditional rules for resource-level access control.
Entity Relations
Model ownership, dependencies, and API consumption relationships between services.
Scroll for all 7
Event Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Backstage Events System
The Backstage Events system provides a publish-subscribe mechanism for broadcasting and consuming events within a Backstage instance. It enables plugins to emit events when sign...
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Backstage Context
JSON-LDSpectral Rules 3
Spectral governance rulesets for linting and validating these APIs.
JSON Schema 16
Standalone JSON Schema definitions for this provider's data models.
AuthResponse
JSON SCHEMAJwksResponse
JSON SCHEMABackstage Catalog Entity
JSON SCHEMAEntityMetadata
JSON SCHEMAEntityRelation
JSON SCHEMAEntity
JSON SCHEMALocation
JSON SCHEMAConditionalRequest
JSON SCHEMAPermissionDecision
JSON SCHEMAPermissionRequest
JSON SCHEMAAction
JSON SCHEMATask
JSON SCHEMASearchDocument
JSON SCHEMASearchResult
JSON SCHEMASearchResultSet
JSON SCHEMATechDocsMetadata
JSON SCHEMAScroll for all 16
JSON Structure 16
JSON Structure definitions describing this provider's data shapes.
Auth Auth Response Structure
JSON STRUCTUREAuth Jwks Response Structure
JSON STRUCTUREBackstage Entity Structure
JSON STRUCTURECatalog Entity Metadata Structure
JSON STRUCTURECatalog Entity Relation Structure
JSON STRUCTURECatalog Entity Structure
JSON STRUCTURECatalog Location Structure
JSON STRUCTUREPermissions Conditional Request Structure
JSON STRUCTUREPermissions Permission Decision Structure
JSON STRUCTUREPermissions Permission Request Structure
JSON STRUCTUREScaffolder Action Structure
JSON STRUCTUREScaffolder Task Structure
JSON STRUCTURESearch Search Document Structure
JSON STRUCTURESearch Search Result Set Structure
JSON STRUCTURESearch Search Result Structure
JSON STRUCTURETechdocs Tech Docs Metadata Structure
JSON STRUCTUREScroll for all 16
Examples 16
Example request and response payloads for these APIs.
Auth Auth Response Example
EXAMPLEAuth Jwks Response Example
EXAMPLEBackstage Entity Example
EXAMPLECatalog Entity Example
EXAMPLECatalog Location Example
EXAMPLEScaffolder Action Example
EXAMPLEScaffolder Task Example
EXAMPLESearch Search Result Example
EXAMPLEScroll for all 16
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Use Cases 4
What developers build with this provider.
Internal Developer Portal
Build a unified portal for developers to discover services, read docs, and scaffold projects.
Service Catalog
Maintain a complete, up-to-date inventory of all microservices, APIs, and infrastructure.
Developer Onboarding
Accelerate new developer onboarding with self-service project scaffolding and documentation.
API Governance
Track all internal and external APIs, their owners, and documentation in one place.
Integrations 6
Pre-built integrations with other platforms and tools.
GitHub
Catalog ingestion from GitHub repos, GitHub Actions integration for CI/CD visibility.
PagerDuty
Show on-call information and incident status on catalog entity pages.
Kubernetes
Display Kubernetes workload status for catalog entities.
Prometheus
Show metrics and alerts for services directly in the catalog.
Snyk
Display security vulnerability information for catalog entities.
Datadog
Surface monitoring dashboards within Backstage.
Resources
Get Started 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Company 3
The organization behind the API
Source (apis.yml)
Work with this as data
Every provider 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 providers
9 MCP tools reach this
find_providersBrowse and filter every provider in the catalog.get_provider_artifactsEvery artifact this provider publishes, grouped by type.get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.get_provider_toolsEvery MCP tool they ship, with the operation each wraps.get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.get_provider_ratingPRO — composite, band, trend and facet scores.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
curl "https://apis.io/api/v1/providers/backstage"
curl "https://apis.io/api/v1/providers?limit=25"
curl "https://apis.io/api/v1/providers/backstage/operations?limit=25"
curl "https://apis.io/api/v1/providers/backstage/evidence"
Discovery needs no key. Ratings and market analysis are Pro.