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Compare MCP servers

Compare scores, permissions, risks, and fit in one decision-focused table.

DimensionSlack MCP ServerSlack for your AI agent — session tokens, not OAuth. 21 tools, no admin approval.Atlassian Rovo MCP ServerSecurely connect Atlassian Cloud to AI tools.Notion MCP ServerOfficial Notion MCP server for querying, editing, and managing Notion pages and databases via AI agents.
FMRS57 / 100 · C66 / 100 · C64 / 100 · C
Reliability8 / 208 / 208 / 20
Security and permissions8 / 2015 / 2017 / 20
Maintenance13 / 2015 / 2010 / 20
Documentation16 / 2015 / 2016 / 20
Setup experience12 / 2013 / 2013 / 20
Best for
  • Developers blocked by OAuth app registration or admin approval
  • Users across Claude Code, Cursor, Copilot, Windsurf, Gemini CLI, and Codex CLI
  • Self-hosters who want tokens and data kept local
  • Developers, content creators, and project teams using Atlassian Cloud
  • Teams that want Atlassian access inside ChatGPT, Claude, Cursor, or VS Code
  • Users who need natural-language search, write, and cross-product workflows
  • Teams and individuals who already manage docs/wikis in Notion and want AI clients (Claude Desktop, Cursor, etc.) to operate on that content directly
  • Developers who want to self-host a local MCP server rather than use a remote hosted option
  • Automation/agent workflows that need to query or update Notion database records programmatically
Not for
  • Workspaces whose acceptable-use policy forbids unofficial clients (consider the OAuth hosted tier)
  • Compliance-sensitive environments uncomfortable reusing personal browser session credentials
  • Teams needing official Slack support (not affiliated with Slack Technologies)
  • Users without an Atlassian Cloud site or relevant product permissions
  • Deployments requiring a self-hosted MCP server
  • Users unwilling to grant an AI client access to Atlassian data or actions
  • Jira Service Management or Bitbucket Cloud workflows requiring OAuth authentication
  • Users who want the standard-OAuth, zero-JSON-config install with active official support — Notion recommends its newer remote Notion MCP server for that
  • Users uncomfortable handing a Notion integration token to a locally-run LLM client
  • Use cases needing capabilities the integration deliberately excludes, such as deleting databases
  • Long-term production deployments that need guaranteed maintenance, given this repo may be sunset
Required permissions
  • Requires Slack browser session token (xoxc-) and cookie (xoxd-); the agent's footprint equals your browser session exactly
  • On macOS, Chrome auto-extraction reads Chrome's local LevelDB and the Chrome Safe Storage key from the Keychain
  • Write tools (send, react, mark read) carry MCP destructive annotations so clients can gate them
  • Jira and Confluence provide read, write, and search permission groups
  • Jira Service Management provides read and write access through API tokens only
  • Bitbucket Cloud provides read and write access through scoped API tokens only
  • Compass is available through OAuth 2.1 only
  • The first OAuth installer for a site must have access to the Atlassian apps requested by the MCP scopes
  • Organization administrators can manage domain controls, API-token authentication, app access, and audit logs
  • A Notion internal integration token (NOTION_TOKEN or the Authorization value in OPENAPI_MCP_HEADERS), scoped by that integration's Capabilities (can be limited to read-only)
  • Access limited to the specific pages/databases explicitly connected to the integration, not the whole workspace
  • A separate bearer auth token when using the Streamable HTTP transport (--auth-token / AUTH_TOKEN)
  • Network access to the Notion API
Risks and side effects
  • Automating your own session is a gray area under Slack's terms — this is an unofficial client
  • No app install appears in the admin panel, but traffic is still subject to workspace compliance exports, DLP, and retention
  • Session tokens expire roughly every 1–2 weeks, requiring re-extraction or the hosted OAuth tier
  • Tokens equate to your full Slack session; a leak means a session leak
  • AI clients can perform Jira, Confluence, Jira Service Management, Bitbucket, and Compass actions on the user’s behalf
  • Prompt injection, indirect prompt injection, and tool-poisoning attacks may cause data exfiltration or unintended changes
  • Use least privilege, scoped tokens, and minimal project or workspace access
  • Require human confirmation for high-impact or destructive actions and monitor audit logs
  • If the integration is granted broad read/write capabilities and connected to many pages, that content is effectively exposed to the LLM, risking data leakage or unintended edits
  • Running with --unsafe-disable-auth removes bearer authentication on the HTTP transport, potentially making it reachable via DNS rebinding from pages a user visits — the README says to only use it on an isolated network
  • Multi-tenant token passthrough requires careful TLS/gateway configuration; misconfiguration risks leaking or misrouting Notion tokens between tenants
  • The README states this local server may be sunset in favor of the remote Notion MCP, and that issues/PRs here are not actively monitored, so long-term maintenance and security fixes are not guaranteed
  • Storing NOTION_TOKEN or OPENAPI_MCP_HEADERS directly in shared client config files risks leaking the secret
Supported clientsClaude Code, Claude Desktop, Cursor, GitHub Copilot (VS Code), Windsurf, Gemini CLI, Codex CLIOpenAI ChatGPT, Claude, Cursor, Visual Studio Code (GitHub Copilot), GitHub Copilot CLI, Google Gemini CLI, Amazon Quick Suite, Local MCP-compatible clients via mcp-remoteClaude Desktop, Cursor, Zed, GitHub Copilot CLI
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