Developer Documentation
Label Platform API
Build on the Label platform — a crowdsourced data annotation system covering billing, data catalog, labeling workflows, quality assurance, ML operations, agent evaluation, and an autonomous data pipeline. Every endpoint is described by an OpenAPI 3.0.3 spec.
Platform Guides
Billing & Usage
Wallets, top-ups, usage metering, and unit configuration.
Storage & Data Catalog
SDK storage, data libraries, catalog items, and semantic search.
Workflows
LLM and labeling workflows, plus workflow task execution.
Labeling & Tasks
Labeling templates, task dispatch, and auto-labeling.
Quality Assurance
QA metrics, inter-annotator agreement, gold tasks, and alerts.
Guidelines
Authoring, versioning, and validating annotation guidelines.
ML Operations
Models, experiments, evaluations, monitoring, and training jobs.
Notifications & Webhooks
In-app notifications and outbound webhook event delivery.