Label Studio
Label Studio is the most flexible open-source data labeling platform from HumanSignal, used to fine-tune LLMs, prepare training data, and validate AI models. The Label Studio REST API exposes projects, tasks, annotations, predictions, storage, webhooks, prompts, and review workflows.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Label Studio the way a machine reads it — 81 machine-readable artifacts across 74 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Label Studio scores 40.2/100 (thin), with a separate agent-readiness read of 48/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Label Studio
Each block below is one kind of artifact we hold for Label Studio. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 74
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Label Studio subpackage_actions API
The subpackage_actions API from Label Studio — 1 operation(s) for subpackage_actions.
Label Studio subpackage_activityLogs API
The subpackage_activityLogs API from Label Studio — 1 operation(s) for subpackage_activitylogs.
Label Studio subpackage_annotationHistory API
The subpackage_annotationHistory API from Label Studio — 3 operation(s) for subpackage_annotationhistory.
Label Studio subpackage_annotationReviews API
The subpackage_annotationReviews API from Label Studio — 2 operation(s) for subpackage_annotationreviews.
Label Studio subpackage_annotations API
The subpackage_annotations API from Label Studio — 4 operation(s) for subpackage_annotations.
Label Studio subpackage_billing API
The subpackage_billing API from Label Studio — 1 operation(s) for subpackage_billing.
Label Studio subpackage_comments API
The subpackage_comments API from Label Studio — 3 operation(s) for subpackage_comments.
Label Studio subpackage_dimensions API
The subpackage_dimensions API from Label Studio — 5 operation(s) for subpackage_dimensions.
Label Studio subpackage_exportStorage API
The subpackage_exportStorage API from Label Studio — 1 operation(s) for subpackage_exportstorage.
Label Studio subpackage_exportStorage.subpackage_exportStorage/azure API
The subpackage_exportStorage.subpackage_exportStorage/azure API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/azure.
Label Studio subpackage_exportStorage.subpackage_exportStorage/azureSpi API
The subpackage_exportStorage.subpackage_exportStorage/azureSpi API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/azurespi.
Label Studio subpackage_exportStorage.subpackage_exportStorage/databricks API
The subpackage_exportStorage.subpackage_exportStorage/databricks API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/databricks.
Label Studio subpackage_exportStorage.subpackage_exportStorage/gcs API
The subpackage_exportStorage.subpackage_exportStorage/gcs API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/gcs.
Label Studio subpackage_exportStorage.subpackage_exportStorage/gcsSa API
The subpackage_exportStorage.subpackage_exportStorage/gcsSa API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/gcssa.
Label Studio subpackage_exportStorage.subpackage_exportStorage/gcswif API
The subpackage_exportStorage.subpackage_exportStorage/gcswif API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/gcswif.
Label Studio subpackage_exportStorage.subpackage_exportStorage/local API
The subpackage_exportStorage.subpackage_exportStorage/local API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/local.
Label Studio subpackage_exportStorage.subpackage_exportStorage/redis API
The subpackage_exportStorage.subpackage_exportStorage/redis API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/redis.
Label Studio subpackage_exportStorage.subpackage_exportStorage/s3 API
The subpackage_exportStorage.subpackage_exportStorage/s3 API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/s3.
Label Studio subpackage_exportStorage.subpackage_exportStorage/s3S API
The subpackage_exportStorage.subpackage_exportStorage/s3S API from Label Studio — 4 operation(s) for subpackage_exportstorage.subpackage_exportstorage/s3s.
Label Studio subpackage_files API
The subpackage_files API from Label Studio — 3 operation(s) for subpackage_files.
Label Studio subpackage_importStorage API
The subpackage_importStorage API from Label Studio — 1 operation(s) for subpackage_importstorage.
Label Studio subpackage_importStorage.subpackage_importStorage/azure API
The subpackage_importStorage.subpackage_importStorage/azure API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/azure.
Label Studio subpackage_importStorage.subpackage_importStorage/azureSpi API
The subpackage_importStorage.subpackage_importStorage/azureSpi API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/azurespi.
Label Studio subpackage_importStorage.subpackage_importStorage/databricks API
The subpackage_importStorage.subpackage_importStorage/databricks API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/databricks.
Label Studio subpackage_importStorage.subpackage_importStorage/gcs API
The subpackage_importStorage.subpackage_importStorage/gcs API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/gcs.
Label Studio subpackage_importStorage.subpackage_importStorage/gcsSa API
The subpackage_importStorage.subpackage_importStorage/gcsSa API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/gcssa.
Label Studio subpackage_importStorage.subpackage_importStorage/gcswif API
The subpackage_importStorage.subpackage_importStorage/gcswif API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/gcswif.
Label Studio subpackage_importStorage.subpackage_importStorage/local API
The subpackage_importStorage.subpackage_importStorage/local API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/local.
Label Studio subpackage_importStorage.subpackage_importStorage/redis API
The subpackage_importStorage.subpackage_importStorage/redis API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/redis.
Label Studio subpackage_importStorage.subpackage_importStorage/s3 API
The subpackage_importStorage.subpackage_importStorage/s3 API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/s3.
Label Studio subpackage_importStorage.subpackage_importStorage/s3S API
The subpackage_importStorage.subpackage_importStorage/s3S API from Label Studio — 4 operation(s) for subpackage_importstorage.subpackage_importstorage/s3s.
Label Studio subpackage_jwtSettings API
The subpackage_jwtSettings API from Label Studio — 1 operation(s) for subpackage_jwtsettings.
Label Studio subpackage_ml API
The subpackage_ml API from Label Studio — 6 operation(s) for subpackage_ml.
Label Studio subpackage_modelProviders API
The subpackage_modelProviders API from Label Studio — 3 operation(s) for subpackage_modelproviders.
Label Studio subpackage_organizations API
The subpackage_organizations API from Label Studio — 4 operation(s) for subpackage_organizations.
Label Studio subpackage_organizations.subpackage_organizations/invites API
The subpackage_organizations.subpackage_organizations/invites API from Label Studio — 3 operation(s) for subpackage_organizations.subpackage_organizations/invites.
Label Studio subpackage_organizations.subpackage_organizations/members API
The subpackage_organizations.subpackage_organizations/members API from Label Studio — 2 operation(s) for subpackage_organizations.subpackage_organizations/members.
Label Studio subpackage_organizations.subpackage_organizations/memberTags API
The subpackage_organizations.subpackage_organizations/memberTags API from Label Studio — 5 operation(s) for subpackage_organizations.subpackage_organizations/membertags.
Label Studio subpackage_organizations.subpackage_organizations/memberTags.subpackage_organizations/memberTags/bulk API
The subpackage_organizations.subpackage_organizations/memberTags.subpackage_organizations/memberTags/bulk API from Label Studio — 1 operation(s) for subpackage_organizations.sub...
Label Studio subpackage_organizations.subpackage_organizations/permissions API
The subpackage_organizations.subpackage_organizations/permissions API from Label Studio — 3 operation(s) for subpackage_organizations.subpackage_organizations/permissions.
Label Studio subpackage_predictions API
The subpackage_predictions API from Label Studio — 2 operation(s) for subpackage_predictions.
Label Studio subpackage_projects API
The subpackage_projects API from Label Studio — 8 operation(s) for subpackage_projects.
Label Studio subpackage_projects.subpackage_projects/assignments API
The subpackage_projects.subpackage_projects/assignments API from Label Studio — 2 operation(s) for subpackage_projects.subpackage_projects/assignments.
Label Studio subpackage_projects.subpackage_projects/exports API
The subpackage_projects.subpackage_projects/exports API from Label Studio — 6 operation(s) for subpackage_projects.subpackage_projects/exports.
Label Studio subpackage_projects.subpackage_projects/members API
The subpackage_projects.subpackage_projects/members API from Label Studio — 1 operation(s) for subpackage_projects.subpackage_projects/members.
Label Studio subpackage_projects.subpackage_projects/members.subpackage_projects/members/bulk API
The subpackage_projects.subpackage_projects/members.subpackage_projects/members/bulk API from Label Studio — 1 operation(s) for subpackage_projects.subpackage_projects/members.s...
Label Studio subpackage_projects.subpackage_projects/members.subpackage_projects/members/paginated API
The subpackage_projects.subpackage_projects/members.subpackage_projects/members/paginated API from Label Studio — 1 operation(s) for subpackage_projects.subpackage_projects/memb...
Label Studio subpackage_projects.subpackage_projects/metrics API
The subpackage_projects.subpackage_projects/metrics API from Label Studio — 1 operation(s) for subpackage_projects.subpackage_projects/metrics.
Label Studio subpackage_projects.subpackage_projects/metrics.subpackage_projects/metrics/custom API
The subpackage_projects.subpackage_projects/metrics.subpackage_projects/metrics/custom API from Label Studio — 6 operation(s) for subpackage_projects.subpackage_projects/metrics...
Label Studio subpackage_projects.subpackage_projects/pauses API
The subpackage_projects.subpackage_projects/pauses API from Label Studio — 2 operation(s) for subpackage_projects.subpackage_projects/pauses.
Label Studio subpackage_projects.subpackage_projects/reviewRoutingRules API
The subpackage_projects.subpackage_projects/reviewRoutingRules API from Label Studio — 2 operation(s) for subpackage_projects.subpackage_projects/reviewroutingrules.
Label Studio subpackage_projects.subpackage_projects/roles API
The subpackage_projects.subpackage_projects/roles API from Label Studio — 3 operation(s) for subpackage_projects.subpackage_projects/roles.
Label Studio subpackage_projects.subpackage_projects/stats API
The subpackage_projects.subpackage_projects/stats API from Label Studio — 20 operation(s) for subpackage_projects.subpackage_projects/stats.
Label Studio subpackage_projectTemplates API
The subpackage_projectTemplates API from Label Studio — 3 operation(s) for subpackage_projecttemplates.
Label Studio subpackage_prompts API
The subpackage_prompts API from Label Studio — 7 operation(s) for subpackage_prompts.
Label Studio subpackage_prompts.subpackage_prompts/indicators API
The subpackage_prompts.subpackage_prompts/indicators API from Label Studio — 2 operation(s) for subpackage_prompts.subpackage_prompts/indicators.
Label Studio subpackage_prompts.subpackage_prompts/runs API
The subpackage_prompts.subpackage_prompts/runs API from Label Studio — 2 operation(s) for subpackage_prompts.subpackage_prompts/runs.
Label Studio subpackage_prompts.subpackage_prompts/versions API
The subpackage_prompts.subpackage_prompts/versions API from Label Studio — 5 operation(s) for subpackage_prompts.subpackage_prompts/versions.
Label Studio subpackage_sessionPolicy API
The subpackage_sessionPolicy API from Label Studio — 1 operation(s) for subpackage_sessionpolicy.
Label Studio subpackage_sso.subpackage_sso/saml API
The subpackage_sso.subpackage_sso/saml API from Label Studio — 2 operation(s) for subpackage_sso.subpackage_sso/saml.
Label Studio subpackage_sso.subpackage_sso/scim API
The subpackage_sso.subpackage_sso/scim API from Label Studio — 1 operation(s) for subpackage_sso.subpackage_sso/scim.
Label Studio subpackage_states API
The subpackage_states API from Label Studio — 5 operation(s) for subpackage_states.
Label Studio subpackage_tasks API
The subpackage_tasks API from Label Studio — 5 operation(s) for subpackage_tasks.
Label Studio subpackage_tasks.subpackage_tasks/agreementMatrix API
The subpackage_tasks.subpackage_tasks/agreementMatrix API from Label Studio — 1 operation(s) for subpackage_tasks.subpackage_tasks/agreementmatrix.
Label Studio subpackage_tokens API
The subpackage_tokens API from Label Studio — 4 operation(s) for subpackage_tokens.
Label Studio subpackage_users API
The subpackage_users API from Label Studio — 7 operation(s) for subpackage_users.
Label Studio subpackage_versions API
The subpackage_versions API from Label Studio — 1 operation(s) for subpackage_versions.
Label Studio subpackage_views API
The subpackage_views API from Label Studio — 4 operation(s) for subpackage_views.
Label Studio subpackage_webhooks API
The subpackage_webhooks API from Label Studio — 3 operation(s) for subpackage_webhooks.
Label Studio subpackage_workspaces API
The subpackage_workspaces API from Label Studio — 2 operation(s) for subpackage_workspaces.
Label Studio subpackage_workspaces.subpackage_workspaces/members API
The subpackage_workspaces.subpackage_workspaces/members API from Label Studio — 1 operation(s) for subpackage_workspaces.subpackage_workspaces/members.
Label Studio subpackage_workspaces.subpackage_workspaces/members.subpackage_workspaces/members/bulk API
The subpackage_workspaces.subpackage_workspaces/members.subpackage_workspaces/members/bulk API from Label Studio — 1 operation(s) for subpackage_workspaces.subpackage_workspaces...
Label Studio subpackage_workspaces.subpackage_workspaces/members.subpackage_workspaces/members/paginated API
The subpackage_workspaces.subpackage_workspaces/members.subpackage_workspaces/members/paginated API from Label Studio — 1 operation(s) for subpackage_workspaces.subpackage_works...
Label Studio subpackage_workspaces.subpackage_workspaces/projects API
The subpackage_workspaces.subpackage_workspaces/projects API from Label Studio — 1 operation(s) for subpackage_workspaces.subpackage_workspaces/projects.
Scroll within the panel for all 74 ·
Open Collections 1
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Reference
OPEN COLLECTIONPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Label Studio Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Label Studio Finops
FINOPSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Label Studio — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
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