# Agentcat Typescript Sdk > AgentCat is an analytics platform for MCP server owners ๐Ÿฑ. - **Type:** MCP server - **Install:** `agentstack add mcp-agentcathq-agentcat-typescript-sdk` - **Verified:** Yes โ€” security-reviewed for prompt injection and unsafe behavior - **Seller:** [agentcathq](https://agentstack.voostack.com/s/agentcathq) - **Installs:** 0 - **Category:** [Data & Analytics](https://agentstack.voostack.com/c/data-and-analytics) - **Latest version:** 0.1.0 - **License:** MIT - **Upstream author:** [agentcathq](https://github.com/agentcathq) - **Source:** https://github.com/agentcathq/agentcat-typescript-sdk - **Website:** https://agentcat.com ## Install ```sh agentstack add mcp-agentcathq-agentcat-typescript-sdk ``` Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent. ## About Getting Started ยท Features ยท Docs ยท Website ยท Open Source ยท Schedule a Demo > [!IMPORTANT] > **MCPcat is now AgentCat** ๐Ÿฑ โ€” same team, same product, new name. This package was previously published as [`mcpcat`](https://www.npmjs.com/package/mcpcat), which keeps working forever, but new features land here. Upgrading takes a few minutes โ€” see the [migration guide](./MIGRATION.md). > [!NOTE] > Looking for the Python SDK? Check it out here [agentcat-python](https://github.com/agentcathq/agentcat-python-sdk). AgentCat is an analytics platform for MCP server owners ๐Ÿฑ. It captures user intentions and behavior patterns to help you understand what AI users actually need from your tools โ€” eliminating guesswork and accelerating product development all with one-line of code. This SDK also provides a free and simple way to forward telemetry like logs, traces, and errors to any Open Telemetry collector or popular tools like Datadog, Sentry, and PostHog. ```bash npm install -S agentcat ``` To learn more about us, check us out [here](https://agentcat.com). For detailed guides visit our [documentation](https://docs.agentcat.com). ## Why use AgentCat? ๐Ÿค” AgentCat helps developers and product owners build, improve, and monitor their MCP servers by capturing user analytics and tracing tool calls. Use AgentCat for: - **User session replay** ๐ŸŽฌ. Follow alongside your users to understand why they're using your MCP servers, what functionality you're missing, and what clients they're coming from. - **Trace debugging** ๐Ÿ”. See where your users are getting stuck, track and find when LLMs get confused by your API, and debug sessions across all deployments of your MCP server. - **Existing platform support** ๐Ÿ“Š. Get logging and tracing out of the box for your existing observability platforms (OpenTelemetry, Datadog, Sentry) โ€” eliminating the tedious work of implementing telemetry yourself. ## Getting Started To get started with AgentCat, first create an account and obtain your project ID by signing up at [agentcat.com](https://agentcat.com). For detailed setup instructions visit our [documentation](https://docs.agentcat.com). Once you have your project ID, integrate AgentCat into your MCP server: ```ts import * as agentcat from "agentcat"; const mcpServer = new Server({ name: "echo-mcp", version: "0.1.0" }); // Track the server with AgentCat agentcat.track(mcpServer, "proj_0000000"); // Register your tools ``` ### Identifying users You can identify your user sessions with a simple callback AgentCat exposes, called `identify`. ```ts agentcat.track(mcpServer, "proj_0000000", { identify: async (request, extra) => { const user = await myapi.getUser(request.params.arguments.token); return { userId: user.id, userName: user.name, userData: { favoriteColor: user.favoriteColor }, }; }, }); ``` ### Redacting sensitive data AgentCat redacts all data sent to its servers and encrypts at rest, but for additional security, it offers a hook to do your own redaction on all text data returned back to our servers. ```ts agentcat.track(mcpServer, "proj_0000000", { redactSensitiveInformation: async (text) => await redact(text), // or redactSensitiveInformation: (text) => redact(text), }); ``` ### Existing Platform Support AgentCat seamlessly integrates with your existing observability stack, providing automatic logging and tracing without the tedious setup typically required. Export telemetry data to multiple platforms simultaneously: ```typescript agentcat.track(server, "proj_0000", { // Project ID can optionally be "null" if you just want to forward telemetry exporters: { otlp: { type: "otlp", endpoint: "http://localhost:4318/v1/traces", }, datadog: { type: "datadog", apiKey: process.env.DD_API_KEY, site: "datadoghq.com", service: "my-mcp-server", }, sentry: { type: "sentry", dsn: process.env.SENTRY_DSN, environment: "production", }, posthog: { type: "posthog", apiKey: process.env.POSTHOG_API_KEY, host: "https://us.i.posthog.com", // Optional: defaults to US region }, }, }); ``` Learn more about our free and open source [telemetry integrations](https://docs.agentcat.com/telemetry/integrations). ### Internal diagnostics To help us catch and fix broken installs, the SDK sends AgentCat a small, anonymized signal when setup or runtime errors occur โ€” never your tool calls, your responses, or anything about your users. Records carry only operational metadata, such as your project ID (or an anonymous install ID when none is set). Your local `~/agentcat.log` is unchanged. Diagnostics are on by default and can be turned off completely with either: - `track(server, projectId, { disableDiagnostics: true })`, or - the `DISABLE_DIAGNOSTICS` environment variable. ## Free for open source AgentCat is free for qualified open source projects. We believe in supporting the ecosystem that makes MCP possible. If you maintain an open source MCP server, you can access our full analytics platform at no cost. **How to apply**: Email hi@agentcat.com with your repository link _Already using AgentCat? We'll upgrade your account immediately._ ## Community Cats ๐Ÿฑ Meet the cats behind AgentCat! Add your cat to our community by submitting a PR with your cat's photo in the `docs/cats/` directory. _Want to add your cat? Create a PR adding your cat's photo to `docs/cats/` and update this section!_ ## Source & license This open-source MCP server is cataloged on AgentStack and links to its original source โ€” we do not rehost the code. - **Author:** [agentcathq](https://github.com/agentcathq) - **Source:** [agentcathq/agentcat-typescript-sdk](https://github.com/agentcathq/agentcat-typescript-sdk) - **License:** MIT - **Homepage:** https://agentcat.com Install and usage instructions live in the source repository linked above. ## Pricing - **Free** โ€” Free ## Security capabilities Automated source analysis of v0.1.0 โ€” what this tool can access: - **Network access:** no - **Filesystem access:** no - **Shell / process execution:** no - **Environment & secrets:** yes - **Dynamic code execution:** no *"Yes" means the capability is present in the source โ€” more access means more to trust, not that it is unsafe.* ## Versions - **0.1.0** โ€” security scan: passed โ€” Imported from the upstream source. ## Links - Listing page: https://agentstack.voostack.com/l/mcp-agentcathq-agentcat-typescript-sdk - Seller: https://agentstack.voostack.com/s/agentcathq - Browse the marketplace: https://agentstack.voostack.com/browse --- Listed on AgentStack โ€” the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.