Node API

Version: 0.5.2
Status: Phase 3 — Public
Live at: nodeapi.ai | API Docs | MCP

Machine-native spatial data processing for AI agents and developers. 25 endpoints. Pay $0.01 USDC per operation on Solana. No accounts, no API keys, no subscriptions.

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Quick Start

# 1. Send a request — get a 402 with payment details
curl -X POST https://nodeapi.ai/v1/validate \
  -F "file=@parcels.geojson"

# → 402: { "recipient": "D8m8C9amSawdqSgEdXWkMZ3M86qsVQuDJswG1wZYkezP", "amount_usd": "0.01", ... }

# 2. Send 0.01 USDC to the recipient on Solana Mainnet
#    Get the transaction signature from your wallet

# 3. Retry with the transaction signature
curl -X POST https://nodeapi.ai/v1/validate \
  -F "file=@parcels.geojson" \
  -H "X-PAYMENT: <your_solana_tx_signature>"

# → 200: { "total_features": 1204, "valid_count": 1204, ... }

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Payment

Every paid endpoint uses Solana Pay with USDC on Solana Mainnet.

Protocol	Solana Pay
Network	Solana Mainnet
Asset	USDC (EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v)
Price	$0.01 flat per operation
Recipient	D8m8C9amSawdqSgEdXWkMZ3M86qsVQuDJswG1wZYkezP

Flow:

1. Call any endpoint → receive 402 with Solana Pay URL + recipient
2. Send 0.01 USDC on Solana Mainnet (include memo: nodeapi:<operation>)
3. Retry with X-PAYMENT: <transaction_signature>
4. Receive processed data

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Endpoints

All endpoints available at /v1/<path> (recommended) and /<path> (legacy, still supported).

Info (free)

Method	Path	Description
GET	/v1/health	Service health
GET	/v1/pricing	Full pricing list

Format & Inspection

Method	Path	Description
POST	/v1/convert	Convert between GeoJSON, Shapefile, GeoPackage, KML
POST	/v1/reproject	Project or reproject to any EPSG (auto-detects assign vs transform)
POST	/v1/validate	Validate geometry — returns JSON report
POST	/v1/repair	Repair invalid geometry (make_valid)
POST	/v1/schema	Extract field schema, CRS, bbox, feature count
POST	/v1/dxf	Extract geometry from DXF/CAD files

Geoprocessing (single input)

Method	Path	Description
POST	/v1/clip	Clip to bounding box or polygon mask
POST	/v1/buffer	Buffer features by distance in meters
POST	/v1/erase	Delete all features, preserve empty schema
POST	/v1/dissolve	Dissolve features by attribute field
POST	/v1/feature-to-point	Convert geometries to centroid points
POST	/v1/feature-to-line	Extract polygon boundaries as lines
POST	/v1/feature-to-polygon	Convert closed lines to polygons
POST	/v1/multipart-to-singlepart	Explode multipart geometries
POST	/v1/add-field	Add a new attribute column

Geoprocessing (two inputs)

Method	Path	Description
POST	/v1/union	Combine all features from two layers
POST	/v1/intersect	Spatial intersection of two layers
POST	/v1/difference	Layer A minus overlap with layer B
POST	/v1/append	Append features from layer B into layer A's schema
POST	/v1/merge	Merge two layers, preserving all fields
POST	/v1/spatial-join	Join attributes by spatial relationship

Tiles

Method	Path	Description
POST	/v1/vectorize	Generate .mbtiles vector tile package (tippecanoe)

Jobs

Method	Path	Description
GET	/v1/jobs/{id}	Poll async job status
GET	/v1/jobs/{id}/download	Download completed job result

Supported input formats: GeoJSON, Shapefile (.zip), GeoPackage (.gpkg), KML, GDB (read), DXF

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MCP Integration

Node API exposes all 25 endpoints as MCP tools — compatible with Claude, GPT-4o, and any MCP-enabled agent.

Remote (no install required)

https://nodeapi.ai/mcp/sse

Connect any MCP client to this SSE endpoint. No authentication needed.

Claude Desktop (local)

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "node-api": {
      "command": "/path/to/venv/bin/python",
      "args": ["-m", "app.mcp_server"],
      "cwd": "/path/to/node-api"
    }
  }
}

22 MCP tools: convert, reproject, validate, repair, schema, clip, dxf, buffer, union, intersect, difference, erase, dissolve, feature-to-point, feature-to-line, feature-to-polygon, multipart-to-singlepart, add-field, append, merge, spatial-join, pricing

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Webhooks

For async jobs (DXF conversion, any large file), pass a webhook_url to receive a POST on completion instead of polling.

curl -X POST https://nodeapi.ai/v1/dxf \
  -F "file=@site-plan.dxf" \
  -F "output_format=geojson" \
  -F "webhook_url=https://your-agent.com/callback" \
  -H "X-PAYMENT: <tx_signature>"

Webhook payload:

{
  "job_id": "abc-123",
  "operation": "dxf",
  "status": "done",
  "result_url": "https://nodeapi.ai/v1/jobs/abc-123/download",
  "result_filename": "output.geojson",
  "size_bytes": 48291
}

Signed with X-Webhook-Signature: sha256=<HMAC> for verification.

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Architecture

• FastAPI — async, OpenAPI spec at /docs
• GeoPandas + GDAL — 200+ vector format support
• Shapely 2.x — geometry operations
• pyproj — CRS reprojection
• tippecanoe 2.79 — vector tile generation
• PostgreSQL — operations log + job queue
• Solana Pay — USDC micropayments on Solana Mainnet
• MCP SDK — stdio (local) + SSE (remote) transport
• Cloudflare Tunnel — nodeapi.ai → API server

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Dev Setup

git clone https://github.com/eianray/node-api
cd node-api
python3 -m venv venv
venv/bin/pip install -r requirements.txt
cp .env.example .env
# Leave SOLANA_WALLET_ADDRESS=YOUR_SOLANA_WALLET_ADDRESS for dev mode (bypasses payment)
venv/bin/uvicorn app.main:app --reload --port 8100

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Roadmap

• Phase 1 ✅ — Convert, reproject, validate, repair, schema, clip
• Phase 2 ✅ — DXF/CAD, buffer, topology (union/intersect/difference), remote MCP SSE
• Phase 3 ✅ (Mar 4 2026) — 11 new geoprocessing endpoints, Solana Pay, webhooks, vector tiles, API versioning, 22 MCP tools
• Phase 4 — Hetzner migration, CDN caching, batch API, agent directory listings

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nodeapi.ai — spatial processing infrastructure for the agent economy.