emerging · -0.2 marketcapability domainschema

Backend

Score 22.7 / 100 35 providers 31 APIs Search apis.io →
Variants seen in the corpus: BackendBackendsbackendbackends

Providers using this tag (35)

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

Strong 6 Solid coverage with minor gaps
IBM Quantum6 APIs65.8Microsoft Azure API ManagementA2AAI GatewayAPI CenterAPI Gateway1 API61.8FastlyCDNEdge CloudEdge ComputeWebAssembly22 APIs60.6IonQQuantum ComputingTrapped IonQPUAria1 API58.8EncoreFrameworkCloudTypeScript2 APIs55.4AmunCoreDatabaseAPI ManagementNo Code2 APIs55.1
Developing 15 Usable, with meaningful gaps to close
AppwriteApplicationBackendsMobileOpen-Source1 API53.1WeChatMessagingSocialPaymentsMini Programs1 API52.0AndroidArtificial IntelligenceAndroidAutomotiveGoogle1 API51.6ScalewayArtificial IntelligenceCloud ComputingContainersDatabase10 APIs50.0FusioAPI ManagementOpen-SourceREST APIAPI Gateway5 APIs49.9PlayFabAuthenticationAzureBaaS1 API49.3GoogleAdvertisingCloudDevelopersGoogle9 APIs49.0ngrokAI GatewayAPI GatewayComputeDeveloper Tools1 API47.6ClerkAuthenticationUser ManagementIdentityPasskeys1 API46.6ConvexDatabaseFunctionsReal-Time3 APIs46.2InstantDBDatabaseReal-TimeSync1 API43.9StrangeworksCompanyQuantum ComputingOptimizationHigh Performance Computing3 APIs42.7CodehooksDatabaseEventHooks1 API42.6NakamaGamingGame BackendReal-Time1 API41.1MemesioMemesMediaImage-GenerationContent1 API40.9
Thin 9 Limited public surface area
AccelByteGamingBaaSLive Services1 API38.8FormspreeFormsStatic SitesEmail1 API35.7Hong Kong Baptist UniversityUniversityHigher EducationEducationHong Kong5 APIs34.5PhonePePaymentsPayment GatewayUPIQR1 API33.2KgatewayGateways1 API32.7RowyLow-CodeFirestoreFirebase1 API28.6EncoreCloud-NativeFrameworksGo2 APIs28.3KeelCompanyERPGraphQL28.3AppDynamicsAPMApplication Performance MonitoringCiscoCloud Observability9 APIs27.9
Emerging 3 Early or largely undocumented
TektonDevOpsCI/CDKubernetesCNCF1 API24.6Microsoft XboxGamingMicrosoftPlayFabXbox2 APIs20.9Amazon Web ServicesAmazonCloudNetworkIndex377 APIs16.7
Minimal 2 Almost no public developer surface
AmplicationCompanyCode GenerationDeveloper Tools10.7DjangoMVCORMPython6.6

APIs with this tag (30)

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 5 Solid coverage with minor gaps
ibm-quantum Backends APIThe Backends API from ibm-quantum — 5 operation(s) for backends.65.8Microsoft Azure API Management Backend APIThe Backend API from Microsoft Azure API Management — 2 operation(s) for backend.61.8Fastly Backend APIOperations for managing backends (origin servers) that a Fastly service routes requests to.60.6IonQ backends APIThe backends API from IonQ — 2 operation(s) for backends.58.8Encore Infrastructure APIEncore's Infrastructure from Code API lets developers declare cloud infrastructure resources — PostgreSQL d...55.4
Developing 15 Usable, with meaningful gaps to close
WeChat Cloud Hosting APIWeChat Cloud Hosting (微信云托管) is Tencent's cloud-native, ops-free container deployment service tightly integ...52.0Firebase Android APIsFirebase SDKs and APIs for Android app development.51.6Scaleway Backends APIThe Load Balancer backend object. It represents a set of backend servers that the frontend forwards request...50.0Fusio Backend APIThe Fusio Backend API provides a REST interface to configure and manage all aspects of a Fusio API manageme...49.9Firebase APIFirebase is a comprehensive app development platform that provides backend services, including real-time da...49.0ngrok Backends APIBackends define how traffic is handled, including tunnel group, weighted, failover, HTTP response, and stat...47.6Clerk C# / .NET SDKOfficial C# / .NET SDK for the Clerk Backend API.46.6Clerk Go SDKOfficial Go SDK for the Clerk Backend API.46.6Clerk Java SDKOfficial Java SDK for the Clerk Backend API.46.6Clerk Node.js SDKBackend SDK for Node.js (@clerk/backend / @clerk/express / @clerk/fastify) that wraps the Backend API and v...46.6Clerk PHP SDKOfficial PHP SDK for the Clerk Backend API.46.6Clerk Python SDKOfficial Python SDK for the Clerk Backend API.46.6Clerk Ruby SDKOfficial Ruby SDK for the Clerk Backend API, with a Rails integration.46.6Convex Server SDKThe Convex Server SDK (convex/server) is the TypeScript library for defining backend logic deployed on Conv...46.2Strangeworks Products GraphQL APIThe product-side GraphQL API used by compute products published on the Strangeworks platform to register an...42.7
Thin 7 Limited public surface area
HKBU Mobile App Backend (gated)Backend host serving the official HKBU Mobile application (mapp-api.hkbu.edu.hk). The host resolves over TL...34.5PhonePe Java Backend SDKServer-side Java SDK that wraps the PhonePe PG REST API, handling X-VERIFY signing, request modelling, and ...33.2PhonePe Node.js Backend SDKServer-side Node.js SDK wrapping the PhonePe PG REST API.33.2PhonePe PHP Backend SDKServer-side PHP SDK wrapping the PhonePe PG REST API.33.2PhonePe Python Backend SDKServer-side Python SDK wrapping the PhonePe PG REST API.33.2Kgateway Backend APIDefine routable backends such as AI providers (OpenAI, Azure, Gemini), AWS Lambda functions, or static serv...32.7AppDynamics Backends APIRetrieve registered backend components detected by the Controller including their properties and exit point...27.9
Emerging 3 Early or largely undocumented
Tekton Dashboard APIThe Tekton Dashboard exposes a web UI and a thin proxy/HTTP API over the Tekton CRDs and Tekton Results, pr...24.6Azure PlayFab APIAzure PlayFab provides a complete backend platform for games with APIs for player authentication, data mana...20.9Amazon Web Services Backend APIThe Backend API from Amazon Web Services — 29 operation(s) for backend.16.7

Score breakdown

Frequency
49.8
log-scaled weighted occurrences
Breadth
1.0
spread across providers
Quality lift
47.2
mean composite of providers using it
Cohesion
3.6
strength of nearest seed neighbor

Related tags

Database 8 co-occurrences Serverless 6 co-occurrences Storage 5 co-occurrences Application 7 co-occurrences Mobile 7 co-occurrences Group 5 co-occurrences Cloud 5 co-occurrences Notification 5 co-occurrences

Where this tag comes from

Provider tag15
Api tag31
Openapi tag10
Openapi op tag55

Cohort brief

Auto-generated

The 35 providers in the APIs.io catalog tagged Backend, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
35
all scored
Mean Kin Score
39.2
+18.5 vs catalog 20.7
Mean Agent Readiness
21.2
+11.5 vs catalog 9.7
Spread
6.6–65.8
median 42 · σ 14.5
How the 35 split by band
Exemplar 0Strong 6Developing 13Thin 9Emerging 5Minimal 2
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 47.1 17.5 +29.6 35
Developer Ergonomics 40.6 17.9 +22.7 35
Access Clarity 38.6 22.3 +16.3 35
Operational Transparency 27 11.3 +15.7 35
Discoverability 66.9 60.4 +6.5 35
Contract Governance 12 6.4 +5.6 35

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) 20% 16% +4
MCP server (first-party) 3% 7% -4
Agent Skills 0% 0% 0
OAuth scopes 11% 9% +2
Security 97% 88% +9
Arazzo workflows 11% 2% +9
Governance rules 60% 13% +47

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 ibm-quantum 65.8
  2. 2 Fastly 60.8
  3. 3 IonQ 59.4
  4. 4 Microsoft Azure API Management 58
  5. 5 AmunCore 56.5
  6. 6 Encore 55.8
  7. 7 ngrok 51.8
  8. 8 PlayFab 49.8
  9. 9 WeChat 48.8
  10. 10 Android 48.6
Top by Agent Readiness
  1. 1 Android 43.5
  2. 2 AmunCore 41.5
  3. 3 Google 39.2
  4. 4 Appwrite 32.9
  5. 5 Convex 30.1
  6. 6 ibm-quantum 29.8
  7. 7 IonQ 26.9
  8. 8 Scaleway 26.6
  9. 9 Microsoft Azure API Management 25.8
  10. 10 Hong Kong Baptist University 25.5
All 35 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

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

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.