A free open data API for trees and tree rules

Examples

curl

# All species (short rows)
curl -s https://lirevon.com/api/v1/species.json

# One species
curl -s https://lirevon.com/api/v1/species/red-maple.json

# Licence rules for one state
curl -s https://lirevon.com/api/v1/licensing/north-carolina.json

JavaScript fetch

const res = await fetch('https://lirevon.com/api/v1/licensing/north-carolina.json');
const data = await res.json();

console.log(data.state.name);         // "North Carolina"
console.log(data.state.treeWork);     // status, details, sources
console.log(data.license, data.url);  // "CC BY 4.0", page to link to

What every file looks like

Each file starts with the same fields: who made it, the licence, the page to link to and the build date. The data sits under one key such as species, state, city or items.

{
  "source": "Lirevon",
  "license": "CC BY 4.0",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Lirevon (lirevon.com)",
  "url": "https://lirevon.com/trees/red-maple",
  "updated": "YYYY-MM-DD",
  "species": { "slug": "red-maple", "name": "Red Maple", ... }
}

Full schema: openapi.json (OpenAPI 3.1).

MCP server

Use the data inside an AI assistant

The Lirevon MCP server lets AI assistants that support the Model Context Protocol look up the same data while they answer. It is read-only, free and needs no key.

Endpoint: https://app.lirevon.com/api/mcp

Tools

• lookup_tree_speciesFacts for a tree species: size, zones, roots, storm risk, pruning time.
• lookup_tree_problemSigns, season, hosts and next steps for one pest or disease.
• tree_service_license_rulesTree work licence rules for a state, with official sources.
• tree_removal_permitPermit and protected tree rules for a city, with sources.
• tree_care_by_stateCommon trees, pests, storm season and pruning timing for a state.
• tree_care_calendarWhat to do with trees in a given month, by US region.
• tree_service_market_statsAggregate numbers from our market check of tree companies.
• find_free_toolFinds a free Lirevon tool or calculator for a task.
• answer_tree_questionBest matching short answers and glossary terms for a question.

The server allows 60 calls a minute and 600 an hour per address. Your client shows the current tool list when it connects, and we may add tools over time.

Add it to Claude Desktop

The simplest way is Settings, then Connectors, then add a custom connector with the endpoint above. Or edit claude_desktop_config.json and restart the app. This version uses a small bridge that needs Node.js installed:

{
  "mcpServers": {
    "lirevon": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://app.lirevon.com/api/mcp"]
    }
  }
}

Other MCP clients

Clients that support remote servers over HTTP can point straight at the endpoint. The exact file name and keys differ by client; this is the common shape:

{
  "mcpServers": {
    "lirevon": {
      "type": "http",
      "url": "https://app.lirevon.com/api/mcp"
    }
  }
}

The same CC BY 4.0 credit applies when an assistant quotes the data. Ask the assistant to quote the page link from each answer.