# Co Herstack Herstack MCP server

Source: https://glimind.com/server/mcp-registry%2Fuk.co.herstack%2Fherstack
Registry id: `mcp-registry/uk.co.herstack/herstack`
Status: live (checked 2026-10-27T02:15:45.299Z)

## Verdict

Co Herstack Herstack MCP server answered 100% of Glimind's liveness checks over 30 days, better than 42% of MCP servers, with 1398 ms median handshake and 0 outages in 90 days. Its agent-readiness grade is A (96/100) across 5 tools, costing an agent about 1,022 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 100% | 42% of MCP servers |
| Median handshake latency | 1398 ms | 11% of MCP servers |
| p95 handshake latency | 3480 ms | — |
| Checks in 30 days | 4,942 | — |
| Outages, 90 days | 0 | — |
| Median recovery | — | — |
| Agent-readiness score | 96/100 (A) | 82% of MCP servers |
| Tools | 5 | — |
| Tool-list size for an agent | ~1,022 tokens | 72% of MCP servers |
| Days observed | 29 | — |

## Install

```json
{
  "mcpServers": {
    "co-herstack-herstack-mcp-server": {
      "type": "http",
      "url": "https://herstack.co.uk/api/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http co-herstack-herstack-mcp-server https://herstack.co.uk/api/mcp
```

## Tools (5)

- `get_evidence`: Call this when the user (or you) wants the studies behind a recommendation or claim. Returns HerStack's evidence rows for a topic or nutrient with the cited stu
- `get_product_details`: Call this for one specific product. Returns one HerStack-recommended product by name or SKU: form, authorised claim, tier, price, purchase link, and every topic
- `get_topic_guidance`: Call this when the user wants to understand a women's-health topic, not only buy something. Returns HerStack's expert guidance for one topic: plain-language fra
- `recommend_supplements`: Call this when the user wants specific supplement product picks for a topic. Returns HerStack's named product recommendations from the site's reference brand, e
- `search_guidance`: Call this first when a user describes their situation or asks a question in their own words (for example: 'I'm 47, tired all the time and bloated, what should I

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.