Bring Llm Observability
to VS Code Copilot
Create your Vinkius account to connect LangSmith (LLM Observability & Hub) to VS Code Copilot and start using all 6 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
Compatible with every major AI agent and IDE
What is the LangSmith (LLM Observability & Hub) MCP Server?
Connect your LangSmith account to any AI agent and take full control of your LLM observability, tracing, and prompt management through natural conversation.
What you can do
- Trace Orchestration — List active tracing projects and retrieve detailed execution logs for specific LLM invocation runs directly from your agent
- Performance Telemetry — Extract precise metrics including token consumption, prompt latency, and exact error strings from your AI pipelines
- Prompt Hub Access — Navigate and retrieve managed prompt templates, variable definitions, and version histories hosted in the LangChain Hub
- Evaluation Datasets — Enumerate curated 'golden' datasets used for automated evaluation of prompt logic or few-shot injection models
- Human-in-the-Loop Audit — Monitor active annotation queues where human reviewers assess the alignment, accuracy, and safety of generated LLM traces
- Agentic Step Analysis — Deep-dive into multi-turn agentic workflows to understand nested tool calls and internal reasoning paths securely
How it works
- Subscribe to this server
- Enter your LangSmith API Key and Endpoint
- Start monitoring your LLM infrastructure from Claude, Cursor, or any MCP-compatible client
Who is this for?
- LLM Engineers — debug complex agentic traces and measure prompt performance through natural conversation without manual UI filtering
- AI Developers — retrieve the latest prompt templates from the Hub and verify evaluation dataset structures directly from your workspace
- AI Analysts — audit human feedback queues and report on overall model grounding and accuracy across multiple tracing projects
Built-in capabilities (6)
Get precise telemetry for a single LLM invocation run
List active human-in-the-loop annotation queues
List all evaluation and fine-tuning datasets mapped in LangSmith
Maps out the boundaries of distinct AI pipelines currently monitored by LangSmith. List all active LangSmith tracing projects/sessions
Extract prompt templates hosted in the LangChain Hub
Isolates the raw interactions containing prompts sent to and responses received from the AI models. List explicit LLM invocation runs within a specific project
Why VS Code Copilot?
GitHub Copilot Agent mode brings LangSmith (LLM Observability & Hub) data directly into your VS Code workflow. With a project-scoped config, the entire team shares access to 6 tools. Copilot queries live data, generates typed code, and writes tests from actual API responses, all without leaving the editor.
- —
VS Code is used by over 70% of developers. adding MCP tools to Copilot means your team can leverage external data without leaving their primary editor
- —
Project-scoped MCP configs (
.vscode/mcp.json) let you commit server configurations to your repository, ensuring the entire team shares the same tool access - —
Copilot's Agent mode integrates MCP tools seamlessly with file editing, terminal commands, and workspace search in a single agentic loop
- —
GitHub's enterprise compliance and audit features extend to MCP tool usage, providing visibility into how AI interacts with external services
LangSmith (LLM Observability & Hub) in VS Code Copilot
Why run LangSmith (LLM Observability & Hub) with Vinkius?
The LangSmith (LLM Observability & Hub) connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 6 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.

* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.




Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect LangSmith (LLM Observability & Hub) using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
LangSmith (LLM Observability & Hub) and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect LangSmith (LLM Observability & Hub) to VS Code Copilot through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
LangSmith (LLM Observability & Hub) for VS Code Copilot
Every request between VS Code Copilot and LangSmith (LLM Observability & Hub) is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
Can I see the token usage for a specific LLM run through my agent?
Yes. Use the get_run_telemetry tool with a specific Run ID. Your agent will retrieve the exact token count (prompt + completion) and latency metrics calculated by LangSmith for that interaction.
How do I fetch a prompt template from the LangChain Hub using natural language?
The list_prompts tool allows your agent to navigate your hosted Hub repository. You can ask your agent to find a specific prompt by name to inspect its instruction text, variables, and version history.
Can my agent check the status of human annotation queues?
Absolutely. Use the list_annotation_queues tool to retrieve all active queues where human feedback is being collected. Your agent can report on the number of pending traces and general alignment scores established by your reviewers.
Which VS Code version supports MCP?
MCP support requires VS Code 1.99 or later with the GitHub Copilot extension. Ensure both are updated to the latest version. Older versions of Copilot may not expose the Agent mode toggle.
How do I switch to Agent mode?
Open the Copilot Chat panel and look for two mode options: "Ask" and "Agent". Click "Agent" to enable autonomous tool calling. In Ask mode, Copilot provides conversational answers but cannot invoke MCP tools.
Can I restrict which MCP tools Copilot can access?
Yes. VS Code shows a tool consent dialog before any MCP tool is invoked for the first time. You can also configure tool access policies at the organization level through GitHub Copilot settings.
Does MCP work in VS Code Remote or Codespaces?
Yes. MCP servers configured via .vscode/mcp.json work in Remote SSH, WSL, and GitHub Codespaces environments. The MCP connection is established from the remote host, so ensure the server URL is accessible from that environment.
MCP tools not available
Ensure you are in Agent mode in Copilot Chat. MCP tools only appear in Agent mode.
Explore More MCP Servers
View all →
PBGC Pension Data
4 toolsAccess official US Pension Benefit Guaranty Corporation data — query single and multiemployer plans, ERISA 4044 rates, and financial assistance records.

Clio
12 toolsPractice law more efficiently with legal case management, time tracking, billing, and document organization in one system.

Oxylabs SERP
10 toolsExtract structured search engine results via Oxylabs — scrape Google, Bing, Yandex, Baidu, and YouTube rankings directly from your AI agent.

LaunchDarkly
9 toolsManage LaunchDarkly feature flags, environments, assignments and deployments smoothly through conversational AI.
