# `com.thawday/thawday` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/com.thawday/thawday
- JSON: https://anlyon.dev/api/v1/servers/com.thawday/thawday
- Version: 1.0.3 (active)
- Publisher: com.thawday (domain proven to the MCP Registry)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/wdlcmu/thawday
- Metadata from the official MCP Registry, synced 2026-11-05T04:18:12.198Z

Title and description, as the publisher wrote them:

```untrusted-server-text
ThawDay
Turkey thaw, roast, and food-safety timelines calculated for your bird's weight and dates.
```

Scanned 2026-11-05T04:18:41.662Z over streamable-http.

**3 tools: 1 change things and 2 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 1 | ask |
| Only reads | read | 2 | allow |

## Exfil surface

No private-data -> untrusted-input -> outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | none |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | none |
| outbound | Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL. | none |

## Findings

No check matched anything in these tool definitions.


## Changes things (1)

Creates or changes something that can be changed back. Claude Code: ask.

### `plan_turkey_timeline`

- 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:

```untrusted-server-text
ThawDay counts back from your dinner hour and names the exact buy, thaw, brine, and roast days. Build the dated turkey plan for one dinner: when to buy, when to start the fridge thaw, when to start brining (if brining), when the bird goes in the oven at 325F, when to start the sides, and when to rest and carve. Dates come from USDA FSIS thaw and roast charts. Plans unstuffed birds, 8 to 24 lb. Dinner times are read in local time, just as they were given. Steps that depend on the time now are judged in that local frame: pass an IANA timezone when you know it; without one, a step is only called past once it is past in every US time zone. The plan says so in a clock note.
```

## Only reads (2)

Looks things up and changes nothing. Claude Code: allow.

### `get_roast_time`

- The name "get_roast_time" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Dinner at 5 does not mean the oven at 5: for a big bird, the oven time lands hours earlier than most people picture. The USDA roast time for an unstuffed turkey at 325F: the chart band and the middle of the band a plan should use, plus the oven-in time when a dinner date and time are given. With state frozen, it gives the USDA from-frozen chart band instead (cooking from frozen is safe and takes at least 50 percent longer). Covers 8 to 24 lb. Ends with the 165F check rule.
```

### `get_thaw_time`

- The name "get_thaw_time" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
The thaw is where Thanksgiving goes wrong: guess the start day and the bird is still frozen on cook day. This names the exact start day. How long a turkey takes to thaw, by USDA method: in the fridge (chart band in days, plus the start date when a cook date is given) or in cold water (30 minutes per pound, with the chart band in hours). Covers 8 to 24 lb.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `thawday`:

```json
{
  "permissions": {
    "allow": [
      "mcp__thawday__get_thaw_time",
      "mcp__thawday__get_roast_time"
    ],
    "ask": [
      "mcp__thawday__plan_turkey_timeline"
    ],
    "deny": []
  }
}
```

## Remote posture

What an anonymous client saw at the remote endpoint, last 2026-11-05T03:19:01.576Z, unchanged since 2026-11-05T03:19:01.576Z. No credentials were sent and no tool was called. Values are shown as the endpoint returned them. Method: https://anlyon.dev/methodology#remote-posture

| Fact | Observed |
| --- | --- |
| Reachable | `yes` |
| HTTP status of an anonymous initialize | `200` |
| tools/list served without credentials | `yes` |
| Tools that change things, listed without credentials | `1` |
| Protocol version | `2025-06-18` |
| WWW-Authenticate on 401 | `not observed` |
| resource_metadata in WWW-Authenticate | `none` |
| RFC 9728 protected resource metadata | `none` |
| Authorization servers | `none` |
| Legacy HTTP+SSE transport | `no` |
| Dynamic client registration | `not observed` |
| Client ID metadata documents | `not observed` |

- **warn** Tools that change things, listed to anyone ([unauth-remote-writes](https://anlyon.dev/methodology#unauth-remote-writes))

```untrusted-server-text
The endpoint served tools/list without credentials, and the list has 1 tool that changes things (1 write). Whether a call also works without credentials was not tested: tools are never called.

https://mcp.thawday.com/mcp: tools/list returned 3 tools to an anonymous client, including plan_turkey_timeline (write)
```