stale · -0.2

Specification Language

Score 15.8 / 100 3 providers +1 via APIs 16 APIs Search apis.io →

Providers using this tag (3)

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

Developing 1 Usable, with meaningful gaps to close
Thin 1 Limited public surface area
Emerging 1 Early or largely undocumented

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 →

Developing 2 Usable, with meaningful gaps to close
Thin 1 Limited public surface area
Emerging 13 Early or largely undocumented
RAML SpecificationThe RAML (RESTful API Modeling Language) specification defines a YAML 1.2-based language for describing HTT...24.0API BlueprintAPI Blueprint is a Markdown-based specification language for describing web APIs, originally created by Api...22.5AsyncAPI SpecificationAsyncAPI is the open standard for describing event-driven and message-driven APIs across protocols such as ...22.5gRPC and Protocol BuffersgRPC is a high-performance RPC framework using HTTP/2 and Protocol Buffers (Protobuf) as its IDL and wire f...22.5JSON SchemaJSON Schema is a declarative language for annotating and validating JSON documents. It is the foundational ...22.5JSON StructureJSON Structure is an emerging open specification that extends and complements JSON Schema with a clearer, m...22.5JSON-RPC 2.0JSON-RPC 2.0 is a stateless, light-weight remote procedure call (RPC) protocol encoded in JSON. It is widel...22.5OpenAPI Specification (OAS)The OpenAPI Specification (formerly Swagger) is the dominant industry standard for describing HTTP-based RE...22.5RAML (RESTful API Modeling Language)RAML is a YAML-based modelling language for RESTful APIs, originally created by Mulesoft. RAML 1.0 (2016) i...22.5SmithySmithy is an open-source IDL and code-generation framework for defining services and SDKs, created and main...22.5Tinybird API SpecThe Tinybird API specification is a vendor-defined, declarative format for describing analytics endpoints (...22.5TypeSpecTypeSpec (formerly Cadl) is a language for describing API shapes developed by Microsoft. TypeSpec definitio...22.5WSDL / SOAPThe Web Services Description Language (WSDL) is the historical XML-based interface definition language for ...22.5

Companies reaching this through an API (1)

These companies publish an API, specification or operation carrying “Specification Language” 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 Specifications

Score breakdown

Frequency
33.7
log-scaled weighted occurrences
Breadth
0.1
spread across providers
Quality lift
36.8
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Where this tag comes from

Provider tag3
Api tag16

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

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