US Grow Zones
com.usgrowzones/grow-zonesusgrowzones.comstreamable-httpv1.0.0Scanned
USDA hardiness zone, frost dates and vegetable planting calendar for any U.S. ZIP code.
4 tools: 1 change things and 3 only read.
- Reads private data · 1
- Reads text others write · 0
- Can send data out · 0
- No findings
Anlyon alternative
1 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
4 tools
Changes things 1Claude Code: ask
what_to_plant_nowUse this when the user asks what vegetables they can plant or start now (or on a given date) at a U.S.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Use this when the user asks what vegetables they can plant or start now (or on a given date) at a U.S. ZIP code. Returns crops whose planting window is open, plus what opens in the next 30 days, and a source link to cite.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
Only reads 3Show 3 read-only tools
get_frost_datesUse this when the user asks for the average last spring frost, first fall frost, or growing season length for a U.S.No findings
Why it is in this group
- The name "get_frost_dates" says "get": a word for reading.
Description, as the server wrote it Use this when the user asks for the average last spring frost, first fall frost, or growing season length for a U.S. ZIP code (or a city + state). Returns NOAA 1991-2020 frost dates (10/30/50% probability) and a source link to cite.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_planting_calendarUse this when the user asks when to start seeds indoors, transplant, direct sow or plant a fall crop for vegetables at a U.S.Reads private dataNo findings
Why it is in this group
- The name "get_planting_calendar" says "get": a word for reading.
What it can reach
- private-dataThe name "get_planting_calendar" says "get" and "calendar": it reads calendars.
Description, as the server wrote it Use this when the user asks when to start seeds indoors, transplant, direct sow or plant a fall crop for vegetables at a U.S. ZIP code. Optionally pass one crop; otherwise returns all supported crops. Includes a source link to cite.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_zone_by_zipUse this when the user asks what USDA plant hardiness zone (e.g.No findings
Why it is in this group
- The name "get_zone_by_zip" says "get": a word for reading.
Description, as the server wrote it Use this when the user asks what USDA plant hardiness zone (e.g. 7a) a U.S. ZIP code is in, or the average extreme winter low there. Returns the 2023 USDA zone, temperature range and a source link to cite.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged untrusted-input or outbound.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http grow-zones https://usgrowzones.com/mcpclaude mcp add --transport http grow-zones https://usgrowzones.com/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__grow-zones__get_zone_by_zip",
"mcp__grow-zones__get_frost_dates",
"mcp__grow-zones__get_planting_calendar"
],
"ask": [
"mcp__grow-zones__what_to_plant_now"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as grow-zones. Review it before you use it.
Capability tags behind 1 rule
- mcp__grow-zones__get_planting_calendar private-data
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/com.usgrowzones/grow-zones/verify?hash=03a0abb1e632e550c44ef0340aee9b92c6b4a3b99ad2d27a09bce6f329b2f6b3" | jq -e '.changed == false'Pinned hash 03a0abb1e632, from Oct 30, 2026, 02:17 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.usgrowzones/grow-zones/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.usgrowzones/grow-zones)Source: MCP Registry. Synced Oct 30, 2026, 03:17 UTC.