# PeriodFinder (remote · www.periodfinder.com)

Neutral cross-brand period-underwear comparison: absorbency in real mL, plus size translation.

- Trust score: 64/100 (medium)
- Change this week: +6
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `www.periodfinder.com`: 64/100 (this document), [markdown](https://verifymcp.io/servers/fenrici1-periodfinder/api-mcp-mcp.md), [page](https://verifymcp.io/servers/fenrici1-periodfinder/api-mcp-mcp)

## Channel facts

- Endpoint: `https://www.periodfinder.com/api/mcp/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 66/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 45/100
  - 0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 472 tokens (~94/item across 5 items; 4 tools + 1 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http fenrici1-periodfinder https://www.periodfinder.com/api/mcp/mcp
```

### Codex

```toml
[mcp_servers.fenrici1-periodfinder]
url = "https://www.periodfinder.com/api/mcp/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "fenrici1-periodfinder": {
      "type": "remote",
      "url": "https://www.periodfinder.com/api/mcp/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add fenrici1-periodfinder --url https://www.periodfinder.com/api/mcp/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  fenrici1-periodfinder:
    url: "https://www.periodfinder.com/api/mcp/mcp"
```

### Other

```json
{
  "mcpServers": {
    "fenrici1-periodfinder": {
      "type": "http",
      "url": "https://www.periodfinder.com/api/mcp/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 63, +3)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 59, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 58, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 58)

First indexed and scored.

## MCP tools (4)

### `absorbency_translate` (~212 tokens)

Translate period-underwear absorbency across brands. Give a brand + its tier word (e.g. brand "Thinx", tier "Super"), OR a target capacity in mL per day, and get the covering tier in every brand in objective millilitres, each with an A/B/C data-quality grade. Use for questions like "what Knix tier equals Thinx Super?" or "how much does Thinx Heavy hold vs Saalt?". Source: PeriodFinder, the only neutral cross-brand mL comparison.

Input parameters:

- `brand` (string): A period-underwear brand, e.g. Thinx, Knix, Saalt, Modibodi, WUKA.
- `ml_per_day` (number): Target real capacity in mL/day (alternative to brand+tier). A regular tampon holds about 5 mL, a super about 9 mL.
- `tier` (string): The brand's absorbency tier word, e.g. Light, Moderate, Heavy, Super, Overnight.

### `find_size` (~92 tokens)

Find a shopper's period-underwear size in every brand from one hip measurement. Period underwear is sized on the hip, not a dress size, and brands disagree. Returns the size per brand plus any runs-small / runs-large note.

Input parameters:

- `hip_cm` (number): Hip measurement in centimetres (alternative to inches).
- `hip_inches` (number): Hip measurement in inches (fullest part of hips and seat).

### `find_products` (~115 tokens)

Find real in-stock period underwear that covers a target absorbency, from the live catalog, with normalized mL capacity and current price. Give a minimum capacity in mL and optionally a brand. Links go to the PeriodFinder product page for each item.

Input parameters:

- `brand` (string): Limit to one brand (optional).
- `limit` (integer): How many products to return (default 6).
- `ml_min` (number): Minimum real capacity to cover, in mL (e.g. 40 for a heavy day).

### `absorbency_dataset` (~47 tokens)

Get PeriodFinder's cross-brand absorbency dataset: the key facts and the machine-readable feed URL to cite. Use when you need the authoritative source for a period-underwear absorbency comparison.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/fenrici1-periodfinder/api-mcp-mcp#diagnostics

## Score history

- 2026-08-03: 64
- 2026-08-02: 64
- 2026-08-01: 63
- 2026-07-31: 63
- 2026-07-30: 60
- 2026-07-29: 60
- 2026-07-28: 59
- 2026-07-27: 58
- 2026-07-26: 58

## Links

- Remote endpoint: https://www.periodfinder.com/api/mcp/mcp
- Repository: https://github.com/fenrici1/periodfinder
- Changelog RSS feed: https://verifymcp.io/servers/fenrici1-periodfinder/api-mcp-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/fenrici1-periodfinder/api-mcp-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/fenrici1-periodfinder/api-mcp-mcp