established · 0.2 capabilitymarket resourcedomain

Annotations

Score 25.5 / 100 47 providers 49 APIs Search apis.io →
Variants seen in the corpus: Annotationsannotations

Providers using this tag (47)

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

Exemplar 2 Complete, well-documented, and agent-ready
SwetrixAnalyticsCookieless TrackingGDPR CompliantOpen-Source2 APIs76.6MuxVideo InfrastructureVideo StreamingLive StreamingVideo Analytics2 APIs76.4
Strong 10 Solid coverage with minor gaps
BuildkiteCI/CDContinuous IntegrationContinuous DeliveryDevOps2 APIs65.9AffindaArtificial IntelligenceDocument ProcessingIntelligent Document ProcessingIDP4 APIs64.7Adobe AnalyticsAdobeAnalyticsBusiness IntelligenceCustomer Intelligence11 APIs61.7DoiTCompanyFinOpsCloud Cost ManagementCloud Intelligence1 API61.3GitHubCodePipelinesPlatformSoftware Development38 APIs60.7AmplitudeA/B TestingAnalyticsExperimentationFeature Flags10 APIs58.0AtlassianCodeCollaborationPlatformProductivity123 APIs57.7MixpanelAnalyticsData AnalysisEvent TrackingProduct Analytics10 APIs56.6GrafanaAlertingAnalyticsDashboardsLogs2 APIs55.6LearnosityEducationAssessmentEdTechLearning12 APIs55.2
Developing 14 Usable, with meaningful gaps to close
GrafanaObservabilityMonitoringDashboardsLogs20 APIs52.3PostHogA/B TestingAnalyticsFeature FlagsOpen-Source1 API50.8Arthur OnlineReal-EstateUnited KingdomProperty ManagementPropTech32 APIs50.5LangWatchArtificial IntelligenceLLMLLM ObservabilityLLM Evaluation1 API50.5MatterCompanyConsumerReadingRead Later1 API50.3AxiomAnalyticsLog ManagementLoggingObservability15 APIs45.6iNaturalistBiodiversityNatureCitizen ScienceWildlife1 API43.9LuminanceCompanyLegalArtificial IntelligenceContracts3 APIs43.6Arize PhoenixLLM ObservabilityAI EvaluationOpenTelemetryTracing1 API42.4When I WorkEmployee SchedulingWorkforce ManagementTime TrackingTime Clock1 API42.1GalileoAI EvaluationAI ObservabilityGenAIGuardrails1 API41.6AxiomObservabilityLog ManagementEvent DataLogs1 API40.5Spring FrameworkAOPDependency InjectionEnterpriseFramework1 API39.9BaremetricsSubscription AnalyticsMRRARRChurn Rate1 API39.8
Thin 15 Limited public surface area
CVATComputer-VisionData AnnotationLabelingDatasets1 API39.2V7Artificial IntelligenceTraining DataData LabelingAnnotation1 API39.0MediaLab.AICompanyMediaSocialAdvertising2 APIs38.9UptraceAPMObservabilityOpenTelemetryDistributed Tracing1 API37.6ConxaiCompanyConstructionAECArtificial Intelligence4 APIs37.5GeniusMusicLyricsCrowdsourced9 APIs36.6BuildkiteDevOpsCI/CDPipelinesAgents1 API36.2honeycomb1 API36.2Tableaux De BordDashboardsBusiness IntelligenceAnalyticsData Visualization1 API35.0CogniteIndustrial IoTManufacturingIndustrial DataDigital Twin2 APIs34.5RCSB PDBStructural BiologyProteomicsBioinformaticsGenomics3 APIs34.5DroneDeployDrone MappingReality CaptureAerial AnalyticsGeospatial7 APIs33.3CodefreshCI/CDContinuous DeliveryGitOpsArgo1 API31.4RossumArtificial IntelligenceDocument AIIDPInvoices1 API30.7UniProtProteinsBioinformaticsGenomicsLife Sciences7 APIs26.2
Emerging 6 Early or largely undocumented
Nutrient.ioDocumentsPDFDocument ProcessingeSignature4 APIs23.9AvocodeDesignDesign HandoffDeveloper CollaborationInspect1 API21.4Nobl9ReliabilitySLOService Level ObjectivesSRE2 APIs18.4FeignHTTP ClientJavaJVMOpen-Source12 APIs17.3ASTM InternationalStandardsStandards Development OrganizationConsensus StandardsTechnical Committees2 APIs14.0JSR-303Bean ValidationJavaJSR-3031 API13.9

APIs with this tag (45)

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 2 Complete, well-documented, and agent-ready
Swetrix Annotations APIManage chart annotations76.6Mux Annotations APIAnnotations allow you to add notes at a specific datetime to view in the Mux Data dashboard.76.4
Strong 7 Solid coverage with minor gaps
Buildkite Annotations APIThe Annotations API from Buildkite — 1 operation(s) for annotations.65.9Affinda Annotations APIManually create, update, and delete annotations on uploaded documents. Annotations are the field-level extr...64.7Adobe Analytics Annotations APIManage analytics annotations61.7Amplitude Annotations APIChart annotation management operations58.0Mixpanel Annotations APIManage chart annotations for time-based markers56.6Grafana Annotations APIDashboard annotations55.6Learnosity Annotations APIAdds annotation and markup capability - highlighting, notes - over assessment content.55.2
Developing 14 Usable, with meaningful gaps to close
Grafana Annotations APICreate, read, update, and delete annotations on Grafana dashboards. Annotations mark events (deploys, incid...52.3PostHog annotations APIThe annotations API from PostHog — 2 operation(s) for annotations.50.8PostHog Annotations APIThe PostHog Annotations API allows developers to create and manage annotations that mark significant events...50.8LangWatch Annotations APIThe Annotations API from LangWatch — 3 operation(s) for annotations.50.5Matter Annotations APIHighlights and notes on items.50.3Axiom Annotations APIThe Annotations API from Axiom — 2 operation(s) for annotations.45.6iNaturalist Annotations APICreate, delete, and vote43.9Luminance Annotations APIThe Annotations API from Luminance — 12 operation(s) for annotations.43.6Arize Phoenix annotations APIThe annotations API from Arize Phoenix — 3 operation(s) for annotations.42.4When I Work Annotations APIAnnotations convey important information to all staff for the given schedules (locations) and date range. A...42.1Galileo Annotations APIThe Annotations API from Galileo — 2 operation(s) for annotations.41.6Axiom Annotations APIMark deployments, incidents, and events on charts.40.5Spring MVC Web FrameworkModel-View-Controller web framework built on the Servlet API. Supports annotation-driven controllers, conte...39.9Baremetrics Annotations APIThe Annotations API from Baremetrics — 2 operation(s) for annotations.39.8
Thin 16 Limited public surface area
CVAT annotations APIShapes, tracks, and tags attached to tasks and jobs.39.2V7 Annotations APIRead and import item annotations.39.0Genius APIThe Genius API exposes the music knowledge community behind genius.com: annotations (crowd-sourced explanat...38.9Uptrace Annotations APIChart annotation management37.6Conxai annotations APIThe annotations API from Conxai — 1 operation(s) for annotations.37.5Genius Annotations APICommunity annotations attached to lyric fragments.36.6Buildkite Annotations APIThe Annotations API from Buildkite — 2 operation(s) for annotations.36.2Honeycomb Markers APIThe Honeycomb Markers API enables developers to create and manage markers that indicate points in time on g...36.2Tableaux De Bord Annotations APIManage dashboard annotations35.0Cognite Annotations APIAnnotations reflect contextual information in base CDF resource types, such as Files and Time series, that ...34.5RCSB PDB Sequence Coordinates APIGraphQL service providing sequence-level alignments between structural databases and external sequence reso...34.5DroneDeploy Annotations and Issues APICreate, read, and update annotations and Issues (field markups tied to a plan's map - points, lines, polygo...33.3Codefresh Annotations APIThe Annotations API from Codefresh — 1 operation(s) for annotations.31.4Rossum Annotations APIThe Annotations API from Rossum — 2 operation(s) for annotations.30.7Rossum REST API v1REST API for managing organizations, users, workspaces, queues, schemas, documents, annotations and webhook...30.7UniProtKB REST APISearch and retrieve protein entries from UniProtKB, which integrates Swiss-Prot (manually reviewed) and TrE...26.2
Emerging 6 Early or largely undocumented
Nutrient Viewer APIDeliver rich document interactions directly in the browser including PDF rendering, annotation, form fillin...23.9Avocode APIThe Avocode REST API provided programmatic access to projects, design files, shared screens, annotations, a...21.4Nobl9 Annotations APIREST API for creating and managing SLO annotations to contextualize reliability data with deployments, inci...18.4Feign JAX-RSFeign JAX-RS modules let developers reuse JAX-RS 1.x, 2.x, 3.x, and 4.x annotations on Feign client interfa...17.3ASTM CompassASTM Compass is the subscription digital library and workflow platform that delivers ASTM standards alongsi...14.0Jakarta ValidationThe Jakarta Validation specification (originally JSR-303, then JSR-349, JSR-380) for defining and enforcing...13.9

Score breakdown

Frequency
56.0
log-scaled weighted occurrences
Breadth
1.3
spread across providers
Quality lift
51.0
mean composite of providers using it
Cohesion
6.6
strength of nearest seed neighbor

Related tags

Dashboards 10 co-occurrences Views 5 co-occurrences Export 10 co-occurrences Builds 5 co-occurrences Datasets 10 co-occurrences Logs 6 co-occurrences Pipelines 6 co-occurrences Folders 5 co-occurrences

Where this tag comes from

Api tag48
Provider tag2
Openapi tag31
Openapi op tag154

Cohort brief

Auto-generated

The 47 providers in the APIs.io catalog tagged Annotations, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
47
all scored
Mean Kin Score
42.1
+21.4 vs catalog 20.7
Mean Agent Readiness
24.6
+14.9 vs catalog 9.7
Spread
10.8–78.6
median 39.8 · σ 16
How the 47 split by band
Exemplar 4Strong 8Developing 13Thin 15Emerging 6Minimal 1
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 47.9 17.5 +30.4 47
Operational Transparency 34.4 11.3 +23.1 47
Access Clarity 44.2 22.3 +21.9 47
Developer Ergonomics 38.9 17.9 +21 47
Discoverability 71.9 60.4 +11.5 47
Contract Governance 14.1 6.4 +7.7 47

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) 34% 16% +18
MCP server (first-party) 9% 7% +2
Agent Skills 0% 0% 0
OAuth scopes 17% 9% +8
Security 98% 88% +10
Arazzo workflows 21% 2% +19
Governance rules 49% 13% +36

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 Swetrix 78.6
  2. 2 Mux 75.4
  3. 3 Adobe Analytics 67.4
  4. 4 Buildkite 66.5
  5. 5 Affinda 64.7
  6. 6 DoiT 64.7
  7. 7 GitHub 62.4
  8. 8 Amplitude 57.1
  9. 9 Learnosity 55.2
  10. 10 Grafana 54.8
Top by Agent Readiness
  1. 1 DoiT 74.4
  2. 2 Adobe Analytics 66.5
  3. 3 GitHub 45.5
  4. 4 Atlassian 41.9
  5. 5 Arthur Online 37.9
  6. 6 Mux 36.6
  7. 7 LangWatch 36.3
  8. 8 Swetrix 33.6
  9. 9 PostHog 33.5
  10. 10 Matter 33.3
All 47 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

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MCP server

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

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