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DimensionAsk Grok MCP ServerConsult Grok through xAI's metered API with exact model selection and no fallbackContext7Upstash's official server providing up-to-date third-party library docs for AI coding assistants
FMRS55 / 100 · C80 / 100 · B
Reliability9 / 2014 / 20
Security and permissions11 / 2016 / 20
Maintenance10 / 2017 / 20
Documentation12 / 2015 / 20
Setup experience13 / 2018 / 20
Best for
  • MCP client users who want an independent Grok 4.7 opinion
  • Users who need exact control over model ID, reasoning effort, and output-token ceiling and accept metered billing
  • Developers who already hold an xAI API key or have the official Grok CLI installed
  • Developers using fast-moving frameworks/libraries worried about the AI suggesting stale code
  • Scenarios wanting zero-config documentation lookup
Not for
  • Users unwilling to pay metered API costs and looking only for free usage
  • Users needing automatic failover or multi-provider fallback — this server offers no harness or model fallback
  • Users who can neither provide XAI_API_KEY nor install grok-cli
  • Users who need fully offline or private local inference (a local provider would be a better fit)
  • Looking up internal/private codebase documentation (Context7 targets publicly published open-source libraries)
  • Cases needing very high coverage of obscure, niche libraries (coverage depends on what Context7's platform has indexed)
Required permissions
  • Requires the XAI_API_KEY secret environment variable, used only for requests to https://api.x.ai
  • If the grok-cli harness is used, requires an installed and authenticated official Grok CLI
  • Launched as a stdio process by the local MCP client from the npm package @ask-llm/grok-mcp
  • Usable without an API key (subject to a free-tier rate limit); CONTEXT7_API_KEY is an optional credential for higher quota
  • Read-only documentation lookup — no code execution or local filesystem access involved
Risks and side effects
  • The xAI API is metered and paid; prompt and response length directly affect cost, and ASK_GROK_MAX_OUTPUT_TOKENS only bounds accidental spend
  • XAI_API_KEY is a secret; if leaked, others could consume your quota
  • The server never falls back to another harness or model, so a misconfiguration causes failure rather than degradation
  • Grok's answers come from a third-party tool that is not an official xAI product; verify output accuracy yourself
  • Prompt content is sent to xAI's service, so treat sensitive code or data with care
  • The free tier has limited quota — high-frequency use may hit rate limits
  • Documentation content comes from Context7's platform index, so its accuracy and freshness depend on that platform's crawl cadence
Supported clientsClaude Code, Claude Desktop, Cursor, Codex, PiClaude Code, VS Code, Cursor, Cline, Amp
Tools12