feat: add Meridian — machine-native GIS processing MCP server with x402 payments

[eianray]

Meridian

Repository: https://github.com/eianray/meridian-mcp
Website / API: https://meridian.nodeapi.ai
Docs: https://v2.nodeapi.ai/docs

What it does

Meridian is a machine-native GIS and raster processing API built for AI agents. The MCP server exposes 28 production endpoints as native tools — vector operations, DEM/raster processing, vector tile generation, batch processing, and more.

Why it belongs here

• 28 tools covering the full GIS surface: reproject, buffer, clip, dissolve, union, intersect, hillshade, slope, aspect, contours, raster-calc, vectorize, and more
• x402/Base USDC micropayments — agents pay autonomously, no accounts or API keys
• Rust/Axum backend — production-validated with 22/22 acceptance test and 100-transaction stress test
• Claude Desktop ready — install the binary, add one JSON config block, done
• Free MCP tier via bypass key (email hello@eianray.com)

Tools (28 total)

meridian_health, meridian_schema, meridian_validate, meridian_repair, meridian_reproject, meridian_buffer, meridian_clip, meridian_dissolve, meridian_convert, meridian_erase, meridian_feature_to_point, meridian_feature_to_line, meridian_feature_to_polygon, meridian_multipart_to_singlepart, meridian_add_field, meridian_union, meridian_intersect, meridian_difference, meridian_append, meridian_merge, meridian_spatial_join, meridian_vectorize, meridian_hillshade, meridian_slope, meridian_aspect, meridian_roughness

Claude Desktop config

{
  "mcpServers": {
    "meridian": {
      "command": "/usr/local/bin/meridian-mcp",
      "env": {
        "MCP_API_KEY": "your-key-here",
        "MERIDIAN_BASE_URL": "https://meridian.nodeapi.ai"
      }
    }
  }
}

[olaservo]

Thanks for contributing to the MCP servers repo!

We've retired the third-party server list from the README in favor of the MCP Registry — see #3950 for context. The Official Integrations and Community Servers sections no longer exist in the README, so this PR no longer has a target.

Going forward, please publish your server to the MCP Registry using the quickstart guide:
https://github.com/modelcontextprotocol/registry/blob/main/docs/modelcontextprotocol-io/quickstart.mdx

That's where server discovery now happens. Thanks for building on MCP!

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Note: I'm working through the backlog with help from Claude Code to give everyone a prompt response.