Federation
Variants seen in the corpus:
Federationfederation
Providers using this tag (38)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Strong 1 Solid coverage with minor gaps
Developing 9 Usable, with meaningful gaps to close
Thin 16 Limited public surface area
APIs with this tag (39)
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 3 Solid coverage with minor gaps
ETSI MEC 040 MEC Federation Enablement APIThe MEC Federation enablement API from ETSI GS MEC 040, which lets edge systems operated by different provi...ETSI NFV SOL011 Or-Or Multi-Administrative-Domain APIsThe RESTful protocols and data models of ETSI GS NFV-SOL 011 on the Or-Or reference point, used between NFV...ETSI Operator Platform Open Exposure Gateway APIThe Open Exposure Gateway of the ETSI Operator Platform SDG, implementing the Open Exposure Gateway role de...
Developing 11 Usable, with meaningful gaps to close
WunderGraph Cloud GraphQL APIThe WunderGraph Cosmo GraphQL API provides full lifecycle management of federated GraphQL APIs, including s...Apollo ConnectorsApollo Connectors simplify REST API orchestration in graphs, replacing unmaintainable procedural code with ...Apollo FederationApollo Federation enables declarative composition of multiple APIs into a single federated GraphQL API. It ...Apollo GraphOS Platform APIThe GraphOS Platform API enables programmatic management of Apollo GraphOS, including publishing schemas, r...Apollo GraphQLWhether your team is new to GraphQL, or seasoned experts, learn why Apollo is the fastest and safest way to...Apollo RouterApollo Router is a high-performance graph router written in Rust for running federated supergraphs using Ap...Rover CLIRover is the command-line interface for managing and maintaining graphs with Apollo GraphOS. It supports pu...Misskey federation APIThe federation API from Misskey — 9 operation(s) for federation.NSX-T Global Manager APIAPI for managing NSX Federation with centralized configuration of multiple NSX deployments across sites.Lemmy Federation APIActivityPub federation and cross-instance operationsBigQuery Connection APIThe BigQuery Connection API enables developers to create and manage connections between BigQuery and extern...
Thin 15 Limited public surface area
GraphQL Mesh APIGraphQL federation framework that composes any API service — REST, OpenAPI, gRPC, SOAP, OData, JSON Schema,...GraphQL Tools APIA set of utilities for faster GraphQL development, enabling SDL-first schema building, type-safe resolver c...Hive GatewayHive Gateway is a federated GraphQL routing engine from The Guild that supports both Apollo Federation and ...Searchcraft Federation APIThe Federation API from Searchcraft — 3 operation(s) for federation.Spacetime Federation API (East-West Interface)The Federation API, or East-West Interface, allows peer networks to request and to supply network resources...Synapse Federation APIFederation managementKuma Multizone APIKuma's Multizone deployment API enables managing service meshes across multiple Kubernetes clusters and Uni...Identity Platform OAuth Configuration APIThe OAuth Configuration API allows developers to programmatically manage OAuth identity provider configurat...Linkerd Multicluster APIThe Linkerd Multicluster extension provides Kubernetes CRDs and a gateway component that enables transparen...Grafbase Management APIGraphQL-based management API that powers the Grafbase Dashboard and enables programmatic control of organiz...Modern Federation APIToken exchange / authenticationShibboleth Identity Provider (SAML 2.0)Zhejiang University operates a Shibboleth SAML 2.0 Identity Provider, entityID https://idp.zju.edu.cn/idp/s...VictoriaMetrics Admin / Federation APIAdministrative endpoints for time-series deletion (/api/v1/admin/tsdb/ delete_series), data export/import (...Matrix Server-Server (Federation) APIFederation API that lets Matrix homeservers exchange events, presence, and key information with one another...Spring Security SAML2SAML 2.0 Service Provider support for Spring Security. Enables SSO integration with SAML identity providers...
Emerging 10 Early or largely undocumented
Casdoor SAML 2.0 Identity ProviderSAML 2.0 identity provider endpoints in Casdoor that issue SAML assertions to enterprise service providers,...ARD Registry APIThe discovery interface a conformant Agent Registry exposes. POST /search is the only mandatory endpoint an...NeuVector Federation APIOperations about FederationUPM Shibboleth SAML 2.0 Identity ProviderFederated single sign-on identity provider for Universiti Putra Malaysia, built on Shibboleth and publishin...Strawberry GraphQL GraphQL APICode-first GraphQL API built with Strawberry, using Python type hints and dataclasses to define schemas. Su...Tuakiri Federated Identity (SAML 2.0 / Shibboleth)The University of Otago operates a SAML 2.0 / Shibboleth Identity Provider (IdP) as a member of the Tuakiri...KAU Single Sign-On / Identity FederationKing Abdulaziz University operates an institutional single sign-on portal (sso.kau.edu.sa) and an Oracle Ac...Mercurius APIGraphQL adapter for Fastify enabling high-performance GraphQL servers and gateways with JIT compilation, qu...Amazon Web Services Federation APIThe Federation API from Amazon Web Services — 1 operation(s) for federation.Karmada Multi-Cluster APIKarmada extends the Kubernetes API with custom resources for multi-cluster management including Propagation...
Score breakdown
Frequency
48.8
log-scaled weighted occurrences
Breadth
1.0
spread across providers
Quality lift
40.0
mean composite of providers using it
Cohesion
10.7
strength of nearest seed neighbor
Related tags
SAML 9 co-occurrences
Decentralized 6 co-occurrences
Server 5 co-occurrences
Single Sign-On 5 co-occurrences
SSO 8 co-occurrences
Policy 5 co-occurrences
Repository 5 co-occurrences
Identity 13 co-occurrences
Where this tag comes from
Api tag40
Provider tag16
Openapi tag6
Openapi op tag18
Cohort brief
Auto-generatedThe 38 providers in the APIs.io catalog tagged Federation, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
38
all scored
Mean Kin Score
33.8
+13.1 vs catalog 20.7
Mean Agent Readiness
20.2
+10.5 vs catalog 9.7
Spread
13.9–58.4
median 34.2 · σ 11
How the 38 split by band
Exemplar 0Strong 1Developing 9Thin 16Emerging 12Minimal 0
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Quality | 44.2 | 17.5 | +26.7 | 38 |
| Operational Transparency | 25.8 | 11.3 | +14.5 | 38 |
| Developer Ergonomics | 26.4 | 17.9 | +8.5 | 38 |
| Discoverability | 67.5 | 60.4 | +7.1 | 38 |
| Access Clarity | 28.3 | 22.3 | +6 | 38 |
| Contract Governance | 8.6 | 6.4 | +2.2 | 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
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 18% | 16% | +2 |
| MCP server (first-party) | 8% | 7% | +1 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 13% | 9% | +4 |
| Security | 89% | 88% | +1 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 50% | 13% | +37 |
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 ETSI 58.4
- 2 WunderGraph 53.2
- 3 Cirrus Identity 51
- 4 Apollo GraphQL 49.4
- 5 University of Manchester 47.8
- 6 Misskey 47.7
- 7 VMware 47.7
- 8 Lemmy 44.5
- 9 Google BigQuery 42.8
- 10 AT Protocol 40
Top by Agent Readiness
- 1 ETSI 47.9
- 2 WunderGraph 32.4
- 3 Misskey 32.3
- 4 PeerTube 32.3
- 5 Cirrus Identity 30.2
- 6 Apollo GraphQL 27.7
- 7 Google BigQuery 26.5
- 8 Pixelfed 24.8
- 9 University of Manchester 24.8
- 10 VMware 24.8
All 38 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
25 August 2026, across 26891
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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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.
Call it yourself
curl for this page
This tag
curl "https://apis.io/api/v1/tags/federation"
All tags
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/federation"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/federation/stats" \
-H "X-API-Key: $APIS_IO_KEY"Discovery needs no key. Ratings and market analysis are Pro.