# W&B Weave (LLM Observability)

**Canonical:** https://apis.io/apis/wandb/weave/  
**Provider:** Weights and Biases — https://apis.io/providers/wandb/  
**Base URL:** https://api.wandb.ai  
**Documentation:** https://weave-docs.wandb.ai/

W&B Weave (LLM Observability) is one of 16 APIs that [Weights and Biases](https://apis.io/providers/wandb/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include LLM, Observability, Tracing, Evaluation, and Guardrails. The published artifact set on APIs.io includes API documentation.

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.

## Machine-readable artifacts (2)

- **Documentation** — https://weave-docs.wandb.ai/
- **Repository** — https://github.com/wandb/weave

## Other Weights and Biases APIs (12)

- [W&B GraphQL API](https://apis.io/apis/wandb/graphql/)
- [W&B REST API](https://apis.io/apis/wandb/rest/)
- [W&B Python SDK](https://apis.io/apis/wandb/python-sdk/)
- [W&B CLI](https://apis.io/apis/wandb/cli/)
- [W&B Serverless Inference (CoreWeave)](https://apis.io/apis/wandb/serverless-inference/)
- [W&B Webhook Automations](https://apis.io/apis/wandb/webhook-automations/)
- [Weights and Biases Calls API](https://apis.io/apis/wandb/wandb-calls-api/)
- [Weights and Biases Costs API](https://apis.io/apis/wandb/wandb-costs-api/)
- [Weights and Biases Feedback API](https://apis.io/apis/wandb/wandb-feedback-api/)
- [Weights and Biases Files API](https://apis.io/apis/wandb/wandb-files-api/)
- [Weights and Biases Objects API](https://apis.io/apis/wandb/wandb-objects-api/)
- [Weights and Biases Refs API](https://apis.io/apis/wandb/wandb-refs-api/)

## Tags

LLM, Observability, Tracing, Evaluation, Guardrails

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/wandb/weave/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/wandb/.