LangSmith tools for AI agents

Call LangSmith's API on your own LangSmith account. Connect it once in the Relvo app; Relvo adds its credentials and charges no usage fee.

Connect LangSmithSee all 134 toolsAPI docs

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Compose the request, copy the prompt, and run it in your agent. It runs on your connected LangSmith account.

Prompt composerMarkdown
LangSmith
Open Relvo
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Supported LangSmith tools

Every LangSmith endpoint Relvo can call on your connected account, with no Relvo usage fee.

134 tools
Get Tracing Project Prebuilt Dashboardlangsmith__get_tracing_project_prebuilt_dashboard_api_v1_8e57beLangSmithyour accountRead Tracer Sessionlangsmith__read_tracer_session_api_v1_sessions_session_id_getLangSmithyour accountUpdate Tracer Sessionlangsmith__update_tracer_session_api_v1_sessions_session_20f72bLangSmithyour accountDelete Tracer Sessionlangsmith__delete_tracer_session_api_v1_sessions_session_adc6ceLangSmithyour accountRead Tracer Sessionslangsmith__read_tracer_sessions_api_v1_sessions_getLangSmithyour accountCreate Tracer Sessionlangsmith__create_tracer_session_api_v1_sessions_postLangSmithyour accountDelete Tracer Sessionslangsmith__delete_tracer_sessions_api_v1_sessions_deleteLangSmithyour accountRead Tracer Sessions Runs Metadatalangsmith__read_tracer_sessions_runs_metadata_api_v1_sess_a6ca71LangSmithyour accountRead Filter Viewslangsmith__read_filter_views_api_v1_sessions_session_id_v_4ba948LangSmithyour accountCreate Filter Viewlangsmith__create_filter_view_api_v1_sessions_session_id_a1762cLangSmithyour accountRead Filter Viewlangsmith__read_filter_view_api_v1_sessions_session_id_vi_fce8d1LangSmithyour accountUpdate Filter Viewlangsmith__update_filter_view_api_v1_sessions_session_id_c2b88aLangSmithyour accountDelete Filter Viewlangsmith__delete_filter_view_api_v1_sessions_session_id_c91af9LangSmithyour accountRename Filter Viewlangsmith__rename_filter_view_api_v1_sessions_session_id_f555bfLangSmithyour accountCount Exampleslangsmith__count_examples_api_v1_examples_count_getLangSmithyour accountRead Examplelangsmith__read_example_api_v1_examples_example_id_getLangSmithyour accountUpdate Examplelangsmith__update_example_api_v1_examples_example_id_patchLangSmithyour accountDelete Examplelangsmith__delete_example_api_v1_examples_example_id_deleteLangSmithyour accountRead Exampleslangsmith__read_examples_api_v1_examples_getLangSmithyour accountCreate Examplelangsmith__create_example_api_v1_examples_postLangSmithyour accountDelete Exampleslangsmith__delete_examples_api_v1_examples_deleteLangSmithyour accountCreate Exampleslangsmith__create_examples_api_v1_examples_bulk_postLangSmithyour accountLegacy Update Exampleslangsmith__legacy_update_examples_api_v1_examples_bulk_patchLangSmithyour accountUpload Examples From Csvlangsmith__upload_examples_from_csv_api_v1_examples_uploa_29fbeeLangSmithyour accountValidate Examplelangsmith__validate_example_api_v1_examples_validate_postLangSmithyour accountValidate Exampleslangsmith__validate_examples_api_v1_examples_validate_bulk_postLangSmithyour accountRead Datasetslangsmith__read_datasets_api_v1_datasets_getLangSmithyour accountCreate Datasetlangsmith__create_dataset_api_v1_datasets_postLangSmithyour accountDelete Datasetslangsmith__delete_datasets_api_v1_datasets_deleteLangSmithyour accountRead Datasetlangsmith__read_dataset_api_v1_datasets_dataset_id_getLangSmithyour account

Set up Relvo for LangSmith

Pick the client you use, then pick a route: Automatic is that client's own link, command or prompt, and Manual is the same install done by hand. Both end at the same OAuth sign-in, with every tool on the LangSmith shelf behind one connector.

Automatic way

Open the plugin page with the details ready.

ChatGPT takes custom MCP servers as plugins. The button opens the right page; copy the name and URL into the form and authorise once.

Open ChatGPT plugins

  1. Add a custom MCP server

    On the plugins page, click + and choose Add custom MCP server.

  2. Fill in the connection

    NameRelvo
    Connectionhttps://app.relvo.si/mcp

  3. Authorise and create

    Pick OAuth, tick the confirmation and click Create as a plugin. Approve Relvo in the browser window ChatGPT opens.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Custom MCP servers are set up in ChatGPT on the web, not in the mobile app. Connect once and every chat can call Relvo.

Manual way

Set it up from ChatGPT's settings.

The same connector, reached through the settings menu instead of the plugin page.

  1. Open Apps & Connectors

    In ChatGPT, open Settings → Apps & Connectors and create a new custom connector.

  2. Name it Relvo

    NameRelvo

  3. Point it at Relvo

    Connectionhttps://app.relvo.si/mcp

  4. Authenticate

    Choose OAuth, continue, and approve Relvo in the browser. ChatGPT saves the connector to your account.

  5. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 134 LangSmith operations run on your connected LangSmith account. Relvo charges no usage fee; LangSmith may bill that account on its own plan.

Automatic way

One link fills in the dialog.

On a desktop browser this opens Claude's Add custom connector form with Relvo's name and MCP URL already in place. Click Add and sign in — there is nothing to type.

Add the Relvo connector

  1. Open the dialog

    Click the button above in the browser where you are signed in to Claude. Customize → Connectors opens with the custom-connector form ready.

  2. Add and authorise

    Click Add, then choose Sign in now under Authentication. Relvo signs you in over OAuth, so no token or API key is pasted into Claude.

  3. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Manual way

The same connector, typed by hand.

Use this on a phone, in a locked-down workspace, or whenever you would rather add the connector through Claude's own menu.

  1. Open Connectors

    In Claude, go to Customize → Connectors and choose + Add → Add custom connector.

  2. Name the connector

    NameRelvo

  3. Paste the MCP URL

    Server URLhttps://app.relvo.si/mcp

  4. Sign in

    Click Add, choose Sign in now under Authentication, and approve Relvo in the OAuth window. The Relvo tools appear under the connector.

  5. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 134 LangSmith operations run on your connected LangSmith account. Relvo charges no usage fee; LangSmith may bill that account on its own plan.

Automatic way

One command, then one sign-in.

The CLI registers Relvo with HTTP transport and writes it into your Claude Code config; authentication happens in the browser.

  1. Run the command

    BASH
    claude mcp add --transport http relvo https://app.relvo.si/mcp

  2. Authenticate once

    Open a session and run /mcp. Choose Relvo → Authenticate; Claude Code opens Relvo's OAuth page and stores the token for the project.

  3. Check the list

    BASH
    claude mcp list

    Relvo shows as connected, with every catalog tool behind it.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The client picks the matching operations and runs them on your connected account.

The command uses local scope by default. Add --scope user to make Relvo available in every project, or --scope project to share it through the repository.

Manual way

Write it into .mcp.json.

Project scope lives in a file, so the whole team gets Relvo without running a command.

  1. Add the server

    JSON · .mcp.json
    {
  "mcpServers": {
    "relvo": {
      "type": "http",
      "url": "https://app.relvo.si/mcp"
    }
  }
}

    Create .mcp.json in the project root and add relvo as an HTTP server.

  2. Reload and sign in

    Start a Claude Code session, run /mcp, choose Relvo → Authenticate, then reload. The tools are available in that project.

  3. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

The same entry works for every project when it is added at user scope instead of project scope. All 134 LangSmith operations run on your connected LangSmith account. Relvo charges no usage fee; LangSmith may bill that account on its own plan.

Automatic way

Hand the setup to Hermes.

Hermes can edit its own config, so one instruction is enough: it writes Relvo into mcp_servers, reloads, and reports the tools it can now call.

  1. Copy the setup prompt

    PROMPT
    Add Relvo as a remote MCP server named "relvo": url https://app.relvo.si/mcp, auth oauth. Follow https://app.relvo.si/SKILL.md, reload MCP, then list the Relvo tools.

  2. Paste it into a Hermes session

    Hermes adds the remote server to ~/.hermes/config.yaml and reloads its MCP connections.

  3. Approve the sign-in

    Open the OAuth link Hermes prints and approve Relvo once. The token is cached, so later sessions do not ask again.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Manual way

Add it to ~/.hermes/config.yaml.

Two settings and one reload — the same entry Hermes would write itself.

  1. Open the config

    Edit ~/.hermes/config.yaml, the file Hermes reads at start-up.

  2. Add the server

    YAML
    mcp_servers:
  Relvo:
    url: https://app.relvo.si/mcp
    auth: oauth

  3. Reload and sign in

    In a session, run /reload-mcp, then approve the OAuth prompt Hermes shows. Tokens are cached under ~/.hermes/mcp-tokens/.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 134 LangSmith operations run on your connected LangSmith account. Relvo charges no usage fee; LangSmith may bill that account on its own plan.

Automatic way

Hand the install to Cursor.

The button opens Cursor's MCP install dialog with the server name and URL already attached.

Add Relvo to Cursor

  1. Open the install prompt

    Click the button on the machine where Cursor is installed. Cursor receives a server named relvo pointing at https://app.relvo.si/mcp.

  2. Install and authenticate

    Confirm the install, then click Authenticate. Cursor completes Relvo's OAuth in the browser.

  3. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The client picks the matching operations and runs them on your connected account.

The install link opens Cursor directly, so it does nothing in a browser that has never installed the editor.

Manual way

Edit ~/.cursor/mcp.json.

Use the global or the project file when you want the entry under your own control.

  1. Open the MCP config

    Edit ~/.cursor/mcp.json for every project, or .cursor/mcp.json inside the repository for one.

  2. Add Relvo

    JSON
    {
  "mcpServers": {
    "relvo": {
      "url": "https://app.relvo.si/mcp"
    }
  }
}

  3. Reload Cursor

    Save the file and reload the window. Relvo appears in the MCP panel, and Authenticate finishes the sign-in.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 134 LangSmith operations run on your connected LangSmith account. Relvo charges no usage fee; LangSmith may bill that account on its own plan.

Automatic way

Ask the Bot to wire it up.

Grok Bot configures connections from the conversation, so the quickest route is a single instruction with Relvo's address.

  1. Copy the setup prompt

    PROMPT
    Add a custom MCP server called relvo at https://app.relvo.si/mcp with OAuth sign-in, then list the Relvo tools.

  2. Paste it into a Bot chat

    The Bot repeats the server name and URL and asks you to confirm. Check them and select Add it.

  3. Authorise

    Select Authorize on the card the Bot sends and approve Relvo in the browser once. The Bot can then call the catalog from any chat.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Manual way

Name the server yourself in the chat.

Grok Bot's settings have no field for a server URL; custom MCP servers are added from the conversation.

  1. Describe the server

    NameRelvo
    Server URLhttps://app.relvo.si/mcp

    Ask the Bot to add a custom server with this name and URL. Say custom server, or it may offer a catalog plugin instead.

  2. Confirm

    The Bot repeats the name and URL. Check that the URL is https://app.relvo.si/mcp, then select Add it.

  3. Authorise

    Select Authorize on the card the Bot sends, sign in and allow access. The Relvo tools appear once you are signed in.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right LangSmith tool to get tracing project prebuilt dashboard and run it on my LangSmith connection. Return LangSmith's response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 134 LangSmith operations run on your connected LangSmith account. Relvo charges no usage fee; LangSmith may bill that account on its own plan.

Use LangSmith with any agent

Pick the client you already use. Every one reaches the same catalog through one Relvo key.

All agents
ChatGPTUse LangSmith with ChatGPTClaudeUse LangSmith with ClaudeClaude CodeUse LangSmith with Claude CodeHermes AgentUse LangSmith with Hermes AgentCursorUse LangSmith with CursorGrok BotUse LangSmith with Grok BotCodexUse LangSmith with CodexOpenClawUse LangSmith with OpenClawAny MCP ClientUse LangSmith with Any MCP Client

Explore other platforms

Other shelves in the same catalog. One key reaches all of them.

Browse all platforms
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Frequently asked questions

Short answers about the key, the price and the call itself.

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