niche · -2.0 capability action

API Discovery

Score 19.4 / 100 24 providers +4 via APIs 16 APIs Search apis.io →

Providers using this tag (24)

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

Exemplar 3 Complete, well-documented, and agent-ready
APIs.ioAPI AggregationAPI DirectoryAPI Indexing20 APIs93.8API EvangelistAPI-EvangelistDeveloper PortalAPI ResearchAPI Governance2 APIs66.8APILayerAPI MarketplaceAPI CatalogDeveloper Tools3 APIs66.7
Developing 7 Usable, with meaningful gaps to close
OrthogonalCompanyAI AgentsAPI Marketplace2 APIs51.6PyntAPI TestingAPI SecuritySecurityApplication Security2 APIs51.2ElvaAPI ManagementMCP ServerMCP LogsMCP Insights1 API50.6Merit SystemsCompanyAgentic CommercePaymentsx4022 APIs45.3Neuronto ARD RegistryAgentic Resource DiscoveryARDMCPA2A1 API44.6BerrerAgentsAgentic CommerceA2AMCP1 API44.0Cequence SecurityAI ProtectionAPI SecurityApplication Security6 APIs41.2
Thin 7 Limited public surface area
Akamai API SecurityAPI SecurityCloud SecurityPosture Management1 API36.1TraceableAPI ProtectionAPI SecurityAPI Testing1 API33.3APIs.guruAPI CatalogAPI DirectoryCommunity1 API31.3ApivaultAPI CatalogAPI DirectoryOpen Source1 API29.3AktoCompanyAPI SecuritySecurityAPI Security Testing28.2APIs.jsonAPI AggregationAPI CatalogingAPI Commons1 API26.7Akita SoftwareAcquiredAPI MappingAPI Observability2 APIs26.2
Emerging 3 Early or largely undocumented
API DynamicsAPI SecurityAPI ObservabilityZero Trust1 API21.7Public APIsAPI AggregationAPI DirectoryFree APIs1 API18.8Salt SecurityAPI SecurityArtificial IntelligencePosture Governance2 APIs11.2
Minimal 4 Almost no public developer surface
Noname SecurityAPI SecurityAPI TestingDeveloper Tools4 APIs9.6API HarmonyAPI AggregationAPI RecommendationGraph Technology1 API9.1FreeAPIDataAPI DirectoryDeveloper Tools1 API5.7ProgrammableWebAPI AggregationAPI DirectoryArchived1 API0.0

APIs with this tag (16)

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 1 Complete, well-documented, and agent-ready
Azure API CenterAzure API Center is the design-time governance and centralized discovery counterpart to Azure API Managemen...71.4
Strong 1 Solid coverage with minor gaps
Fastly API Discovery APIOperations for enabling and managing the API Discovery product that identifies API endpoints in service tra...63.7
Developing 2 Usable, with meaningful gaps to close
IBM API Connect Discovery APIProcesses API call records collected from gateways and proxies to discover APIs that are not yet managed in...53.0Spec Scoring APIPublic, no-auth REST API for scoring OpenAPI documents. GET /api/review/checks returns the full set of chec...50.6
Thin 4 Limited public surface area
Traceable API Security PlatformTraceable provides an intelligent API security platform offering API discovery, threat detection and protec...33.3APIs.json SpecificationThe APIs.json specification defines a machine-readable JSON or YAML format for describing API operations. U...26.7Akita SoftwareAkita Software provided an API observability platform that used passive traffic monitoring to automatically...26.2Postman Live InsightsPostman Live Insights is the successor to Akita Software, now integrated into the Postman platform. The Pos...26.2
Emerging 3 Early or largely undocumented
API Dynamics PlatformThe APIDynamics platform provides AI-driven API security and observability including API discovery, traffic...21.7API Stack DirectoryThe API Stack Directory is a searchable catalog of 213+ API tools and services organized into 50+ categorie...12.6Salt Security API Protection PlatformThe Salt Security API Protection Platform provides full lifecycle API security including automated API disc...11.2
Minimal 5 Almost no public developer surface
Noname API DiscoveryNoname API Discovery provides complete visibility into all APIs across an organization, including managed, ...9.6Noname API Security PlatformThe Noname API Security Platform provides comprehensive API security through discovery, posture management,...9.6API Harmony ServiceAPI Harmony was an intelligent API matchmaking service that used graph technology and machine learning to s...9.1FreeAPIData DirectoryAgent-readable API-discovery directory. Offers an llms.txt machine-readable invitation and editorial blog g...5.7ProgrammableWeb API DirectoryProgrammableWeb maintained the world's largest directory of open web APIs, mashups, and developer tools. Th...0.0

Companies reaching this through an API (4)

These companies publish an API, specification or operation carrying “API Discovery” 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.

API Stack Fastly IBM API Connect Microsoft Azure API Management

Score breakdown

Frequency
43.0
log-scaled weighted occurrences
Breadth
0.5
spread across providers
Quality lift
36.9
mean composite of providers using it
Cohesion
7.4
strength of nearest seed neighbor

Related tags

API Directory 7 co-occurrences API Aggregation 5 co-occurrences API Catalog 5 co-occurrences API Security 9 co-occurrences API Governance 5 co-occurrences API Testing 5 co-occurrences A2A Verified 5 co-occurrences Discovery 5 co-occurrences

Where this tag comes from

Provider tag24
Api tag16
Openapi tag1
Openapi op tag3

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/api-discovery"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/api-discovery"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/api-discovery/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 form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

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