MCP server

Marsgeo

io.github.cnmars/marsgeo

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Generate SEO structured data: JSON-LD schema, robots.txt, sitemaps, hreflang, Open Graph, meta.

Working at last checkAbout 813 tokens per request once connected9 tools

https://mars.cx/api/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 9
Token cost: About 813 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http marsgeo https://mars.cx/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.marsgeo]
url = "https://mars.cx/api/mcp"

Gemini CLI

{"mcpServers":{"marsgeo":{"httpUrl":"https://mars.cx/api/mcp"}}}

Cursor

{"mcpServers":{"marsgeo":{"url":"https://mars.cx/api/mcp"}}}

VS Code

{"servers":{"marsgeo":{"type":"http","url":"https://mars.cx/api/mcp"}}}

Antigravity

agy mcp add marsgeo https://mars.cx/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"marsgeo","server_url":"https://mars.cx/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"marsgeo","server_url":"https://mars.cx/api/mcp"}

generate_faq_schema ~90 tokens
Generate FAQPage JSON-LD structured data from question/answer pairs.
generate_hreflang ~93 tokens
Generate reciprocal hreflang tags for a multilingual site.
generate_meta_description ~63 tokens
Trim and format a paragraph into a meta description within length limits.
generate_open_graph ~84 tokens
Generate Open Graph social-preview meta tags.
generate_product_schema ~96 tokens
Generate Product JSON-LD structured data.
generate_robots_txt ~88 tokens
Generate a robots.txt file with allow/disallow rules and an optional sitemap.
generate_sitemap ~59 tokens
Generate an XML sitemap from a list of URLs.
run_marsgeo_tool ~180 tokens
Run any MarsGeo SEO tool by slug. Supported: faq-schema-generator, article-schema-generator, product-schema-generator, how-to-schema-generator, breadcrumb-schema-generator, organization-schema-generator, robots-txt-generator, sitemap-generator, hreflang-generator, meta-description-generator, open-gr
validate_json_ld ~60 tokens
Validate JSON-LD and return the pretty-printed block plus detected @type.

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Lint hreflang: codes, x-default, self-reference, canonical, return links. Never fetches URLs.

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