# LangChain evaluators API

**Canonical:** https://apis.io/apis/langchain/langchain-evaluators-api/  
**Provider:** LangChain — https://apis.io/providers/langchain/  
**Base URL:** https://api.smith.langchain.com  
**Documentation:** https://docs.langchain.com/langsmith

LangChain evaluators API is one of 66 APIs that [LangChain](https://apis.io/providers/langchain/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Evaluators. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and authentication docs.

The evaluators API from LangChain — 2 operation(s) for evaluators.

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/langchain/refs/heads/main/openapi/langchain-evaluators-api-openapi.yml
- **Documentation** — https://docs.langchain.com/langsmith
- **Signup** — https://smith.langchain.com/
- **Authentication** — https://docs.langchain.com/langsmith/create-account-api-key
- **GraphQL** — https://raw.githubusercontent.com/api-evangelist/langchain/refs/heads/main/graphql/langchain-graphql.md

## Other LangChain APIs (12)

- [LangChain access_policies API](https://apis.io/apis/langchain/langchain-access-policies-api/)
- [LangChain ace API](https://apis.io/apis/langchain/langchain-ace-api/)
- [LangChain alert_rules API](https://apis.io/apis/langchain/langchain-alert-rules-api/)
- [LangChain annotation-queues API](https://apis.io/apis/langchain/langchain-annotation-queues-api/)
- [LangChain api-key API](https://apis.io/apis/langchain/langchain-api-key-api/)
- [LangChain audit-logs API](https://apis.io/apis/langchain/langchain-audit-logs-api/)
- [LangChain auth API](https://apis.io/apis/langchain/langchain-auth-api/)
- [LangChain aws_marketplace API](https://apis.io/apis/langchain/langchain-aws-marketplace-api/)
- [LangChain backfills API](https://apis.io/apis/langchain/langchain-backfills-api/)
- [LangChain beacon API](https://apis.io/apis/langchain/langchain-beacon-api/)
- [LangChain bulk-exports API](https://apis.io/apis/langchain/langchain-bulk-exports-api/)
- [LangChain charts API](https://apis.io/apis/langchain/langchain-charts-api/)

## Tags

Evaluators

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