emerging · 0.2 capability resource

Annotation

Score 23.6 / 100 15 providers +57 via APIs 66 APIs Search apis.io →
Variants seen in the corpus: AnnotationsAnnotation

Providers using this tag (15)

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

Developing 5 Usable, with meaningful gaps to close
Thin 6 Limited public surface area
Emerging 2 Early or largely undocumented
Minimal 2 Almost no public developer surface

APIs with this tag (66)

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 11 Complete, well-documented, and agent-ready
Strong 6 Solid coverage with minor gaps
Developing 22 Usable, with meaningful gaps to close
PostHog Annotations APIThe PostHog Annotations API allows developers to create and manage annotations that mark significant events...51.5Dataloop Platform APIThe Dataloop (Dell Data Orchestration Engine) platform REST API. Every part of the platform — projects, dat...51.2Matter Annotations APIHighlights and notes on items.51.1Opal Annotations APIThe Annotations API from Opal — 4 operation(s) for annotations.49.7University of Helsinki Annotations APIThe Annotations API from University of Helsinki — 3 operation(s) for annotations.49.4Kaltura Annotation APIAnnotation service - Video Annotation47.9LangWatch Annotations APIThe Annotations API from LangWatch — 3 operation(s) for annotations.46.6When I Work Annotations APIAnnotations convey important information to all staff for the given schedules (locations) and date range. A...46.1Superb AI Annotations APIThe annotations API from Superb AI — 9 operation(s) for annotations.45.2Luminance Annotations APIThe Annotations API from Luminance — 12 operation(s) for annotations.45.1Axiom Annotations APIThe Annotations API from Axiom — 2 operation(s) for annotations.44.7Spring MVC Web FrameworkModel-View-Controller web framework built on the Servlet API. Supports annotation-driven controllers, conte...44.4iNaturalist Annotations APICreate, delete, and vote43.1Genius APIThe Genius API exposes the music knowledge community behind genius.com: annotations (crowd-sourced explanat...42.2Pypestream Annotations APIThe Annotations API from Pypestream — 2 operation(s) for annotations.42.1Cognite Annotations APIAnnotations reflect contextual information in base CDF resource types, such as Files and Time series, that ...42.0Cintoo Annotation APIThe Annotation API from Cintoo — 3 operation(s) for annotation.41.2Emory University Annotation APIannotation resource40.9Labelbox GraphQL APIGraphQL API for programmatic access to Labelbox platform resources including datasets, projects, labels, on...40.8Labelbox REST APIREST API providing access to Labelbox platform resources. Available at https://api.labelbox.com/api/v1, thi...40.8Conxai Annotations APIThe annotations API from Conxai — 1 operation(s) for annotations.40.6Arize Phoenix Annotations APIThe annotations API from Arize Phoenix — 3 operation(s) for annotations.40.3
Thin 19 Limited public surface area
DroneDeploy Annotations and Issues APICreate, read, and update annotations and Issues (field markups tied to a plan's map - points, lines, polygo...38.1Tableaux De Bord Annotations APIManage dashboard annotations37.3Genius Annotations APICommunity annotations attached to lyric fragments.37.1V7 Annotations APIRead and import item annotations.37.1Baremetrics Annotations APIThe Annotations API from Baremetrics — 2 operation(s) for annotations.36.2Axiom Annotations APIMark deployments, incidents, and events on charts.35.9Uptrace Annotations APIChart annotation management35.9Nuxeo Annotation APIThe Annotation API from Nuxeo — 2 operation(s) for annotation.34.7CVAT Annotations APIShapes, tracks, and tags attached to tasks and jobs.34.6Affectiva Annotations APIThe annotations API from Affectiva — 2 operation(s) for annotations.33.8STRING Annotation APIFunctional annotations and term lookup33.3RCSB PDB Sequence Coordinates APIGraphQL service providing sequence-level alignments between structural databases and external sequence reso...31.9Agora Interactive Whiteboard APIThe Agora Interactive Whiteboard API embeds collaborative real-time digital whiteboards for drawing, annota...30.6SuperAnnotate APIREST API and Python SDK for managing annotation projects, datasets, folders, items, annotations, annotation...29.6Encord Annotate APIREST API and Python SDK for programmatically managing annotation projects, datasets, ontologies, labels, an...29.3Rossum Annotations APIThe Annotations API from Rossum — 2 operation(s) for annotations.29.3Rossum REST API v1REST API for managing organizations, users, workspaces, queues, schemas, documents, annotations and webhook...29.3Humboldt-Universität zu Berlin Annotations APIAnnotation layers and their preparation metadata28.8Codefresh Annotations APIThe Annotations API from Codefresh — 1 operation(s) for annotations.28.6
Emerging 8 Early or largely undocumented

Companies reaching this through an API (57)

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

Adobe Analytics Adobe Suite Aethero Affectiva Affinda Agora Amazon S3 Amplitude Arize Phoenix ASTM International Avocode Axiom Axiom Baremetrics Buildkite Cintoo Codefresh Cognite Conxai CVAT DataLoop Dify DoiT DroneDeploy Emory University Feign Galileo Technologies Grafana Honeycomb Humboldt-Universität zu Berlin iNaturalist Kaltura LangWatch Learnosity Luminance Matomo Matter MediaLab.AI Mixpanel Mux Nobl9 Nutrient.io Nuxeo Opal PostHog Pypestream RCSB PDB Rossum SewerAI Spring Framework
Show all 57 companies ↓

Score breakdown

Frequency
58.9
log-scaled weighted occurrences
Breadth
0.4
spread across providers
Quality lift
38.9
mean composite of providers using it
Cohesion
6.6
strength of nearest seed neighbor

Related tags

Data Labeling 10 co-occurrences Training Data 6 co-occurrences Cohorts 5 co-occurrences Datasets 18 co-occurrences Labels 8 co-occurrences Dashboards 10 co-occurrences Schema 7 co-occurrences Project 19 co-occurrences

Where this tag comes from

Api tag66
Provider tag15
Openapi tag36
Openapi op tag163

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/annotation"
All tags
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/annotation"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/annotation/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.

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