AGENT SKILLS · MISSION KIT / langchain-ai

langchain-ai · Agent Skills

30 Skills with substantive, source-verified documentation. Open a card to read the original instructions and review package and installation details.

langchain-ai
Official

langsmith-dataset

INVOKE THIS SKILL when creating evaluation datasets, uploading datasets to LangSmith, or managing existing datasets. Covers dataset types (finalresponse, singlestep, trajectory, RAG), CLI management commands, SDK-based creation, and example management. Uses the langsmith CLI tool.

1h installs
2
GitHub stars
163
Updated
Oct 20
langchain-ai
Official

langsmith-evaluator

INVOKE THIS SKILL when building evaluation pipelines for LangSmith. Covers three core components: (1) Creating Evaluators - LLM-as-Judge, custom code; (2) Defining Run Functions - how to capture outputs and trajectories from your agent; (3) Running Evaluations - locally with evaluate() or auto-run via LangSmith. Uses the langsmith CLI tool.

1h installs
2
GitHub stars
163
Updated
Oct 20
langchain-ai
Official

langsmith-online-eval-engineering

Design, test, create, and attach LangSmith online evaluators for production traces or conversation threads. Use for workspace evaluators, run or thread rules, sampling, filters, backfills, and evaluator monitoring; use eval-engineering for Harbor tasks and agent benchmarks.

1h installs
2
GitHub stars
161
Updated
Oct 2
langchain-ai
Official

langsmith-trace

INVOKE THIS SKILL when working with LangSmith tracing OR querying traces. Covers adding tracing to applications and querying/exporting trace data. Uses the langsmith CLI tool.

1h installs
2
GitHub stars
163
Updated
Oct 20
langchain-ai
Official

lca-deepagents

Active, Socratic teacher for the LangChain Academy Deep Agents course — drives the student through the curriculum with a calibrated interaction density, explain-then-check dialogue at load-bearing moments, and misconception-targeted questioning

1h installs
2
GitHub stars
22
Updated
Aug 7
langchain-ai
Official

langsmith-fetch

Fetches LangSmith traces for debugging agent behavior. Use when troubleshooting agent issues, reviewing conversation history, or investigating tool calls.

1h installs
1
GitHub stars
3
Updated
Feb 18