emerging · 0.1 capability action

API Discovery

Score 20.6 / 100 23 providers +5 via APIs 18 APIs Search apis.io →

Providers using this tag (23)

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

Exemplar 3 Complete, well-documented, and agent-ready
APIs.ioAPI AggregationAPI DirectoryAPI Indexing19 APIs90.0APILayerAPI MarketplaceAPI CatalogDeveloper Tools3 APIs67.0API EvangelistAPI EvangelistDeveloper PortalAPI ResearchAPI Governance2 APIs66.9
Strong 1 Solid coverage with minor gaps
OrthogonalCompanyAI AgentsAPI Marketplace2 APIs56.8
Developing 4 Usable, with meaningful gaps to close
PyntAPI TestingAPI SecuritySecurityApplication Security2 APIs52.5ElvaAPI ManagementMCP ServerMCP LogsMCP Insights1 API49.5Merit SystemsCompanyAgentic CommercePaymentsx4022 APIs47.4Neuronto ARD RegistryAgentic Resource DiscoveryARDMCPA2A1 API43.7
Thin 9 Limited public surface area
Akamai API SecurityAPI SecurityCloud SecurityPosture Management1 API38.5Cequence SecurityAI ProtectionAPI SecurityApplication Security6 APIs38.2TraceableAPI ProtectionAPI SecurityAPI Testing1 API34.4APIs.guruAPI CatalogAPI DirectoryCommunity1 API32.3ApivaultAPI CatalogAPI DirectoryOpen-Source1 API31.9APIs.jsonAPI AggregationAPI CatalogingAPI Commons1 API30.6AktoCompanyAPI SecuritySecurityAPI Security Testing27.6Akita SoftwareAcquiredAPI MappingAPI Observability2 APIs27.4Agent ReadinessAgent ReadinessAI AgentsAPI Governance15 APIs26.6
Emerging 4 Early or largely undocumented
API DynamicsAPI SecurityAPI ObservabilityZero Trust1 API23.1Public APIsAPI AggregationAPI DirectoryFree APIs1 API20.4Salt SecurityAPI SecurityArtificial IntelligencePosture Governance2 APIs13.8Noname SecurityAPI SecurityAPI TestingDeveloper Tools4 APIs12.8
Minimal 2 Almost no public developer surface
ProgrammableWebAPI AggregationAPI DirectoryArchived1 API10.5API HarmonyAPI AggregationAPI RecommendationGraph Technology1 API10.1

APIs with this tag (18)

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...67.0
Strong 2 Solid coverage with minor gaps
Fastly API Discovery APIOperations for enabling and managing the API Discovery product that identifies API endpoints in service tra...62.3Gloo PortalGloo Portal is a developer portal product from Solo.io that enables organizations to expose, document, and ...56.3
Developing 2 Usable, with meaningful gaps to close
Spec Scoring APIPublic, no-auth REST API for scoring OpenAPI documents. GET /api/review/checks returns the full set of chec...49.5Neuronto ARD Registry APISearch, explore and audit Agentic Resource Discovery entries: MCP servers, A2A agents, OpenAPI services and...43.7
Thin 6 Limited public surface area
APIClarity Spec Reconstructor Module APIControls reconstruction of an OpenAPI specification from live traffic for a discovered API. Served under /a...35.3Traceable API Security PlatformTraceable provides an intelligent API security platform offering API discovery, threat detection and protec...34.4ApivaultApivault is a free, open-source API directory that serves as a gateway to a world of public APIs. It catalo...31.9APIs.json SpecificationThe APIs.json specification defines a machine-readable JSON or YAML format for describing API operations. U...30.6Akita SoftwareAkita Software provided an API observability platform that used passive traffic monitoring to automatically...27.4Postman Live InsightsPostman Live Insights is the successor to Akita Software, now integrated into the Postman platform. The Pos...27.4
Emerging 5 Early or largely undocumented
API Dynamics PlatformThe APIDynamics platform provides AI-driven API security and observability including API discovery, traffic...23.1API Stack DirectoryThe API Stack Directory is a searchable catalog of 213+ API tools and services organized into 50+ categorie...14.4Salt Security API Protection PlatformThe Salt Security API Protection Platform provides full lifecycle API security including automated API disc...13.8Noname API DiscoveryNoname API Discovery provides complete visibility into all APIs across an organization, including managed, ...12.8Noname API Security PlatformThe Noname API Security Platform provides comprehensive API security through discovery, posture management,...12.8
Minimal 2 Almost no public developer surface
ProgrammableWeb API DirectoryProgrammableWeb maintained the world's largest directory of open web APIs, mashups, and developer tools. Th...10.5API Harmony ServiceAPI Harmony was an intelligent API matchmaking service that used graph technology and machine learning to s...10.1

Companies reaching this through an API (5)

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 APIClarity Fastly Gloo Microsoft Azure API Management

Score breakdown

Frequency
44.0
log-scaled weighted occurrences
Breadth
0.6
spread across providers
Quality lift
42.2
mean composite of providers using it
Cohesion
6.8
strength of nearest seed neighbor

Related tags

API Directory 6 co-occurrences API Aggregation 5 co-occurrences API Security 10 co-occurrences API Governance 7 co-occurrences API Catalog 5 co-occurrences API Testing 5 co-occurrences Discovery 6 co-occurrences Developer Tools 10 co-occurrences

Where this tag comes from

Provider tag23
Api tag18
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.

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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.
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"

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