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The PromptLayer MCP server lets any Model Context Protocol compatible client interact with PromptLayer — managing prompts, tracking requests, running evaluations, and more.

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Remote Server (Streamable HTTP)

The hosted MCP server is available at: 
https://mcp.promptlayer.com/mcp
Pass your PromptLayer API key via the Authorization header. No installation required.

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Claude Desktop / Cursor / Windsurf

Add to your MCP config: 
{
  "mcpServers": {
    "promptlayer": {
      "type": "streamable-http",
      "url": "https://mcp.promptlayer.com/mcp",
      "headers": {
        "Authorization": "Bearer pl_your_key_here"
      }
    }
  }
}

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OpenAI Responses API

The remote server works with OpenAI’s MCP tool support: 
{
  "tools": [{
    "type": "mcp",
    "server_label": "promptlayer",
    "server_url": "https://mcp.promptlayer.com/mcp",
    "require_approval": "never",
    "headers": {
      "Authorization": "Bearer pl_your_key_here"
    }
  }]
}

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Local Server (stdio)

Install the server from npm: @promptlayer/mcp-server For clients that support stdio transport (e.g. Claude Desktop, Cursor), you can run the server locally via npx: 
{
  "mcpServers": {
    "promptlayer": {
      "command": "npx",
      "args": ["-y", "@promptlayer/mcp-server"],
      "env": {
        "PROMPTLAYER_API_KEY": "pl_your_key_here"
      }
    }
  }
}

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Available Tools

The MCP server exposes 34 tools covering all major PromptLayer features:
CategoryTools
Prompt Templatesget-prompt-template, get-prompt-template-raw, list-prompt-templates, publish-prompt-template, list-prompt-template-labels, create-prompt-label, move-prompt-label, delete-prompt-label, get-snippet-usage
Trackinglog-request, create-spans-bulk
Datasetslist-datasets, create-dataset-group, create-dataset-version-from-file, create-dataset-version-from-filter-params
Evaluationslist-evaluations, create-report, run-report, get-report, get-report-score, update-report-score-card, delete-reports-by-name
Agentslist-workflows, create-workflow, patch-workflow, run-workflow, get-workflow-version-execution-results, get-workflow
Folderscreate-folder, edit-folder, get-folder-entities, move-folder-entities, delete-folder-entities, resolve-folder-id

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Source Code

The MCP server is open source: github.com/MagnivOrg/promptlayer-mcp