Weights and Biases

aid: wandb
url: https://raw.githubusercontent.com/api-evangelist/wandb/refs/heads/main/apis.yml
name: Weights and Biases
kind: company
description: 'Weights and Biases (W&B) is an MLOps and AI developer platform covering the full lifecycle of model and LLM
  application development. W&B Models provides experiment tracking, hyperparameter sweeps, artifacts, model registry, and
  reports. W&B Weave provides LLM tracing, evaluation, cost tracking, guardrails, and prompt/playground tooling for production
  AI applications. Three CoreWeave- powered serverless capabilities sit alongside the core platform: Serverless Inference
  (OpenAI-compatible API for open-source foundation models), Serverless RL (post-training with ART/RULER), and Serverless
  Sandboxes (isolated code execution). The platform exposes a Python SDK, a public REST API, and a GraphQL API at api.wandb.ai,
  with CLI tooling and webhook integrations. W&B was acquired by CoreWeave in 2025.'
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/wandb.png
tags:
- MLOps
- Experiment Tracking
- LLM Observability
- Model Registry
- AI Platform
- Evaluation
- Tracing
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.19'
apis:
- aid: wandb:graphql
  name: W&B GraphQL API
  description: Primary programmatic surface for W&B Models. The Python public API (wandb.Api) speaks GraphQL against api.wandb.ai
    to query and manage runs, projects, sweeps, artifacts, registries, reports, automations, slack and webhook integrations,
    and viewer/entity context.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - GraphQL
  - Runs
  - Artifacts
  - Sweeps
  - Model Registry
  properties:
  - type: Documentation
    url: https://docs.wandb.ai/ref/python/public-api/api/
  - url: graphql/wandb-graphql.md
    type: GraphQL
- aid: wandb:rest
  name: W&B REST API
  description: REST endpoints exposed by the W&B platform for ingestion, artifact upload, file storage, and integration callbacks.
    Used internally by the wandb SDK and CLI, and available to customers for direct integration.
  humanURL: https://docs.wandb.ai/
  baseURL: https://api.wandb.ai
  tags:
  - REST
  - Ingestion
  - Artifacts
  properties:
  - type: Documentation
    url: https://docs.wandb.ai/
- aid: wandb:weave
  name: W&B Weave (LLM Observability)
  description: LLM observability and evaluation platform providing tracing, output evaluation, cost estimation, prompt playground,
    guardrails, and a Python and TypeScript SDK. Traces and evaluations are persisted to the W&B backend and queryable via
    the Weave SDK.
  humanURL: https://weave-docs.wandb.ai/
  baseURL: https://api.wandb.ai
  tags:
  - LLM
  - Observability
  - Tracing
  - Evaluation
  - Guardrails
  properties:
  - type: Documentation
    url: https://weave-docs.wandb.ai/
  - type: Repository
    url: https://github.com/wandb/weave
- aid: wandb:python-sdk
  name: W&B Python SDK
  description: Official Python SDK (wandb) for logging runs, metrics, gradients, media, and artifacts; running sweeps; and
    interacting with the W&B public API. Apache-2.0 licensed.
  humanURL: https://docs.wandb.ai/ref/python/
  baseURL: https://github.com/wandb/wandb
  tags:
  - SDK
  - Python
  properties:
  - type: Repository
    url: https://github.com/wandb/wandb
  - type: Package
    url: https://pypi.org/project/wandb/
- aid: wandb:cli
  name: W&B CLI
  description: Command-line interface bundled with the wandb Python package for login, sweep orchestration, artifact management,
    and local agent execution.
  humanURL: https://docs.wandb.ai/ref/cli/
  baseURL: https://docs.wandb.ai/ref/cli/
  tags:
  - CLI
  - Sweeps
  - Agents
  properties:
  - type: Documentation
    url: https://docs.wandb.ai/ref/cli/
- aid: wandb:serverless-inference
  name: W&B Serverless Inference (CoreWeave)
  description: OpenAI-compatible inference API for hosted open-source foundation models, running on CoreWeave GPU infrastructure
    with native Weave tracing and usage tracking.
  humanURL: https://docs.wandb.ai/guides/inference
  baseURL: https://api.inference.wandb.ai/v1
  tags:
  - Inference
  - OpenAI-Compatible
  - LLM
  - Serverless
  properties:
  - type: Documentation
    url: https://docs.wandb.ai/guides/inference
- aid: wandb:webhook-automations
  name: W&B Webhook Automations
  description: Outbound webhook integrations driven by W&B automations. Customers register endpoints that W&B POSTs to when
    configured events fire (artifact created, alias added, run state changes, registry events).
  humanURL: https://docs.wandb.ai/guides/automations/
  baseURL: customer-configured
  tags:
  - Webhooks
  - Automations
  - Events
  properties:
  - type: Documentation
    url: https://docs.wandb.ai/guides/automations/
- aid: wandb:wandb-calls-api
  name: Weights and Biases Calls API
  description: The Calls API from Weights and Biases — 8 operation(s) for calls.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Calls
  properties:
  - type: OpenAPI
    url: openapi/wandb-calls-api-openapi.yml
- aid: wandb:wandb-costs-api
  name: Weights and Biases Costs API
  description: The Costs API from Weights and Biases — 3 operation(s) for costs.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Costs
  properties:
  - type: OpenAPI
    url: openapi/wandb-costs-api-openapi.yml
- aid: wandb:wandb-feedback-api
  name: Weights and Biases Feedback API
  description: The Feedback API from Weights and Biases — 4 operation(s) for feedback.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/wandb-feedback-api-openapi.yml
- aid: wandb:wandb-files-api
  name: Weights and Biases Files API
  description: The Files API from Weights and Biases — 2 operation(s) for files.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/wandb-files-api-openapi.yml
- aid: wandb:wandb-objects-api
  name: Weights and Biases Objects API
  description: The Objects API from Weights and Biases — 4 operation(s) for objects.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Objects
  properties:
  - type: OpenAPI
    url: openapi/wandb-objects-api-openapi.yml
- aid: wandb:wandb-refs-api
  name: Weights and Biases Refs API
  description: The Refs API from Weights and Biases — 1 operation(s) for refs.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Refs
  properties:
  - type: OpenAPI
    url: openapi/wandb-refs-api-openapi.yml
- aid: wandb:wandb-service-api
  name: Weights and Biases Service API
  description: The Service API from Weights and Biases — 2 operation(s) for service.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Service
  properties:
  - type: OpenAPI
    url: openapi/wandb-service-api-openapi.yml
- aid: wandb:wandb-table-api
  name: Weights and Biases Table API
  description: The Table API from Weights and Biases — 1 operation(s) for table.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Table
  properties:
  - type: OpenAPI
    url: openapi/wandb-table-api-openapi.yml
- aid: wandb:wandb-tables-api
  name: Weights and Biases Tables API
  description: The Tables API from Weights and Biases — 4 operation(s) for tables.
  humanURL: https://docs.wandb.ai/ref/python/public-api/api/
  baseURL: https://api.wandb.ai/graphql
  tags:
  - Tables
  properties:
  - type: OpenAPI
    url: openapi/wandb-tables-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/wandb-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/wandb-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/wandb-domain-security.yml
- type: Authentication
  url: authentication/wandb-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/wandbai
- type: Website
  url: https://wandb.ai/
- type: Documentation
  url: https://docs.wandb.ai/
- type: GitHub
  url: https://github.com/wandb
- type: Weave
  url: https://weave-docs.wandb.ai/
- type: Pricing
  url: https://wandb.ai/site/pricing/
- type: Parent
  url: https://www.coreweave.com/
- type: Plans
  url: plans/wandb-plans-pricing.yml
- type: RateLimits
  url: rate-limits/wandb-rate-limits.yml
- type: FinOps
  url: finops/wandb-finops.yml
- type: LlmsText
  url: https://docs.wandb.ai/llms.txt
- type: Blog
  url: https://wandb.ai/fully-connected
integrations:
- name: PyTorch
- name: TensorFlow
- name: Hugging Face
- name: Keras
- name: scikit-learn
- name: OpenAI
- name: Anthropic
- name: LangChain
- name: LlamaIndex
- name: Slack
- name: GitHub
- name: Kubernetes
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com