AgentTask Atlas

Compared · Debugging & observability · Cursor

Best MCP servers for Debugging & observability in Cursor

8 entries in the AgentTask Atlas catalog fit debugging & observability and have Cursor setup instructions in their official README or docs. Debugging servers split into two groups: ones that read production telemetry from a vendor account (Sentry, Datadog, Grafana, Cloudflare, Vercel) and ones that inspect something running on your machine (Chrome DevTools, Next.js DevTools). The first group acts with your account's permissions, so the safe setup is to scope access as narrowly as the vendor allows and keep tool approval on.

Based on official docs, not hands-on tested. Cursor steps checked 2026-10-21; catalog entries verified 2026-10-16 to 2026-10-20. Not ranked by a score: entries that document more clients come first.

NameHostedCredentialsLicenseVerdict
Vercel MCP
Vercel
YesRequiredNot stated (hosted service, no public source repository)Pick it to inspect deployments and logs or manage Vercel projects from the agent; it acts with your account's access, so keep human confirmation on for changes.
Datadog MCP Server
Datadog
YesRequiredMITPick it to investigate production issues from the agent using your Datadog account; OAuth keeps access within your existing RBAC.
Next.js DevTools MCP
Vercel
—NoneMIT (stated in README; GitHub detects no LICENSE file)Pick it to let the agent read live errors, routes and logs from a running Next.js 16+ dev server; it needs `npm run dev` running.
Chrome DevTools MCP
Chrome DevTools (Google)
—NoneApache-2.0Pick it for performance traces, network and console debugging; it exposes browser content to the client.
Elasticsearch MCP Server (deprecated)
Elastic
—RequiredApache-2.0Avoid for new setups: the official README marks it deprecated; use it only on existing installs.
Grafana MCP
Grafana Labs
—RequiredApache-2.0Pick it to query dashboards, Prometheus and Loki from the agent; needs a Grafana service account token.
Sentry MCP
Sentry
YesRequiredNOASSERTIONPick it to debug production errors from Sentry inside the agent; needs Sentry OAuth or a user token.
Cloudflare MCP servers
Cloudflare
YesRequiredApache-2.0Pick it for Workers, observability and Cloudflare docs; each remote server uses its own OAuth scopes.

How to add them to Cursor

  1. 1. Pick project or global config

    Project servers go in .cursor/mcp.json inside the repository, so the whole team debugs against the same project. Global servers go in ~/.cursor/mcp.json and are available everywhere.

  2. 2. Connect Sentry scoped to one project

    Sentry's hosted server uses OAuth: the first connection opens a sign-in to your Sentry account. Its setup page recommends scoping the URL to an organization or project, which makes tools default to that project and hides discovery tools. Cursor snippet from Sentry's setup instructions (replace the slugs):

    {
  "mcpServers": {
    "sentry": {
      "url": "https://mcp.sentry.dev/mcp/{organizationSlug}/{projectSlug}"
    }
  }
}

  3. 3. Add a local browser debugger (no credentials)

    Chrome DevTools MCP runs locally and needs Node.js LTS and current Chrome. Its README gives this standard config; in Cursor you can also use Cursor Settings, MCP, New MCP Server, or the Install in Cursor button in its client guide:

    {
  "mcpServers": {
    "chrome-devtools": {
      "command": "npx",
      "args": [
        "-y",
        "chrome-devtools-mcp@latest"
      ]
    }
  }
}

  4. 4. For a Next.js app, read errors from the running dev server

    Next.js DevTools MCP discovers running Next.js 16+ dev servers and proxies their built-in /_next/mcp endpoint for live errors, routes and logs, so start npm run dev first. Its README config for Cursor:

    {
  "mcpServers": {
    "next-devtools": {
      "command": "npx",
      "args": [
        "-y",
        "next-devtools-mcp@latest"
      ]
    }
  }
}

  5. 5. Datadog: install the plugin instead of a manual entry

    Datadog's setup docs for Cursor say to install the Datadog Plugin (it includes the MCP server): open it in the Cursor Marketplace and click Add to Cursor, or search for it under Cursor Settings, Plugins. Then type /ddsetup in the agent chat for first-time setup. If you added the Datadog MCP server by hand before, remove it to avoid conflicts.

  6. 6. Keep tokens out of the file

    Grafana's README config needs GRAFANA_URL and a service account token. Cursor resolves ${env:NAME} in command, args, env, url and headers, so the token can come from your shell environment instead of being committed with .cursor/mcp.json.

    {
  "mcpServers": {
    "grafana": {
      "command": "uvx",
      "args": [
        "mcp-grafana"
      ],
      "env": {
        "GRAFANA_URL": "${env:GRAFANA_URL}",
        "GRAFANA_SERVICE_ACCOUNT_TOKEN": "${env:GRAFANA_SERVICE_ACCOUNT_TOKEN}"
      }
    }
  }
}

  7. 7. Keep tool approval on and debug connections

    Cursor asks for approval before running MCP tools by default; click the arrow next to a tool name to see its arguments before approving anything that updates issues or changes a project. MCP tools follow the same Run Modes as terminal commands. If a server fails, open the Output panel (Cmd+Shift+U) and select MCP Logs.

Full walkthrough for any server: How to add an MCP server to Cursor.

Install notes and account access

Servers that log in to a vendor account act on real data and resources. The permissions line is what the vendor says the server can do with your account.

Vercel MCP · Vercel
Connect to https://mcp.vercel.com. Claude Code: `claude mcp add --transport http vercel https://mcp.vercel.com`, then `/mcp` to authenticate; or `npx add-mcp https://mcp.vercel.com` to configure detected clients (see docs). official docs ↗
Can do: Searches Vercel docs, manages projects and deployments, reads deployment logs and queries Web Analytics; Vercel says connecting grants the AI the same access as your Vercel user account (limited by the OAuth grant and team permissions).
Credentials: Vercel account OAuth (explicit consent for each client connection). · Maintenance: Hosted remote server; official docs last updated 2026-09-15; no public source repository or GitHub release · Verified 2026-10-20
Datadog MCP Server · Datadog
Use `claude mcp add --transport http datadog` with the US1 URL https://mcp.datadoghq.com/v1/mcp (or your regional endpoint), or install the Datadog plugin/connector for your client (see setup docs). official docs ↗
Can do: Queries Datadog observability data (logs, metrics, traces, monitors, dashboards, security signals and more) and can perform write actions that the authenticated user's Datadog permissions allow; write tools are rejected for read-only users.
Credentials: Datadog OAuth (recommended) or Datadog API and application keys for some clients. · Maintenance: Managed remote server; no GitHub release on datadog-labs/mcp-server; CHANGELOG updated through 2026-10-15; last commit 2026-10-16 · Verified 2026-10-19
Next.js DevTools MCP · Vercel
Run `npx -y next-devtools-mcp@latest` from your client's MCP config, or `npx add-mcp next-devtools-mcp@latest` (see README). official docs ↗
Can do: Discovers local Next.js 16+ dev servers and proxies their built-in `/_next/mcp` tools (errors, routes, logs, Server Actions); sends anonymous usage telemetry unless NEXT_TELEMETRY_DISABLED=1.
Credentials: None · Maintenance: Release v0.4.0 on 2026-06-24; last commit 2026-09-15 · Verified 2026-10-17
Chrome DevTools MCP · Chrome DevTools (Google)
Add `npx chrome-devtools-mcp@latest` to your client (README lists per-client steps). official docs ↗
Can do: Controls and inspects a Chrome instance (performance traces, network, console); README warns it exposes browser content to the client.
Credentials: None · Maintenance: Release chrome-devtools-mcp-v1.11.0 on 2026-10-15; last commit 2026-10-16 · Verified 2026-10-16
Elasticsearch MCP Server (deprecated) · Elastic
README marks it deprecated (critical security fixes only) and points to Elastic Agent Builder's MCP endpoint. official docs ↗
Can do: Queries Elasticsearch indices with your credentials.
Credentials: ES_URL plus ES_API_KEY (or username/password). · Maintenance: Release v0.4.6 on 2025-10-24; last commit 2026-06-23 ; DEPRECATED per README · Verified 2026-10-16
Grafana MCP · Grafana Labs
Binary, Docker image grafana/mcp-grafana or `uvx` (see README). official docs ↗
Can do: Reads dashboards, datasources, Prometheus/Loki queries, incidents; some write tools.
Credentials: GRAFANA_URL plus a service account token (GRAFANA_SERVICE_ACCOUNT_TOKEN) or basic auth. · Maintenance: Release v2.0.2 on 2026-10-07; last commit 2026-10-14 · Verified 2026-10-16
Sentry MCP · Sentry
Remote server https://mcp.sentry.dev/mcp, or stdio `npx @sentry/mcp-server` (see README). official docs ↗
Can do: Reads issues, events and projects in your Sentry org; can update issues.
Credentials: Sentry OAuth (remote) or a Sentry user auth token (stdio). · Maintenance: Release cli@0.47.0 on 2026-10-05; last commit 2026-10-17 · Verified 2026-10-17
Cloudflare MCP servers · Cloudflare
Add a remote URL like https://docs.mcp.cloudflare.com/mcp or https://observability.mcp.cloudflare.com/mcp (list in README). official docs ↗
Can do: Remote servers act on your Cloudflare account (Workers, observability, DNS analytics, docs) per OAuth scopes.
Credentials: Cloudflare OAuth (per server). · Maintenance: Release containers-mcp@0.2.19 on 2026-08-11; last commit 2026-10-09 · Verified 2026-10-16

Sources

All debugging & observability entries, in every client: Best MCP servers for Debugging & observability · Debugging & observability explorer. Ask the catalog from inside Cursor with the free, read-only AgentTask Atlas MCP server.

Other comparisons: Best MCP servers for Infra & deploy in Cursor · Databases & SQL · Infra & deploy · Library docs & research · Web fetching & scraping · Frontend & UI · Local files · Docs & writing

⚠ No independent security audit: entries summarize official sources only. Review permissions and code before installing.