# mechoulam.de Cannabis Evidence Register (remote · mechoulam.de)

GRADE-rated clinical evidence on cannabis as medicine (DE/EN). Search and cite studies.

- Trust score: 79/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-24

## Components

- remote · `mechoulam.de`: 79/100 (this document), [markdown](https://verifymcp.io/servers/de-mechoulam-cannabis-evidence/mechoulam.md), [page](https://verifymcp.io/servers/de-mechoulam-cannabis-evidence/mechoulam)

## Channel facts

- Endpoint: `https://mechoulam.de/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## 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 2026-09-24.

- **Endpoint Security**: 63/100
  - 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 5 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 check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 80/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 399 tokens (~79/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 93/100
  - Stability observed for 28 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.
  - Structured output schemas are declared (40% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the mechoulam.de Cannabis Evidence Register MCP server?

mechoulam.de Cannabis Evidence Register is a hosted endpoint at https://mechoulam.de/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http de-mechoulam-cannabis-evidence 'https://mechoulam.de/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "de-mechoulam-cannabis-evidence": {
      "url": "https://mechoulam.de/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "de-mechoulam-cannabis-evidence": {
      "type": "http",
      "url": "https://mechoulam.de/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.de-mechoulam-cannabis-evidence]
url = "https://mechoulam.de/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "de-mechoulam-cannabis-evidence": {
      "type": "remote",
      "url": "https://mechoulam.de/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add de-mechoulam-cannabis-evidence --url 'https://mechoulam.de/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  de-mechoulam-cannabis-evidence:
    url: "https://mechoulam.de/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "de-mechoulam-cannabis-evidence": {
      "Transport": "http",
      "Url": "https://mechoulam.de/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add de-mechoulam-cannabis-evidence -t streamable-http -u 'https://mechoulam.de/mcp'
```

### Other

```json
{
  "mcpServers": {
    "de-mechoulam-cannabis-evidence": {
      "type": "http",
      "url": "https://mechoulam.de/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.

### 2026-09-23 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-21 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-13 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-09 (score 72, +2)

- [functional] Schema quality: good → excellent

## MCP tools (5)

### `search` (~62 tokens)

Search the mechoulam.de cannabis-medicine evidence register by free text (indication, condition, drug, study title, author). Returns indications and reviewed studies with citable URLs. Answer language follows the language of the query.

Input parameters:

- `query` (string, required): Search query

Output parameters:

- `results` (array)

### `fetch` (~58 tokens)

Fetch one full record by the id returned from search: the GRADE-rated evidence summary of an indication, or one study with its per-indication verdicts. Includes the source URL to cite.

Input parameters:

- `id` (string, required): Id from a search result

Output parameters:

- `id` (string)
- `metadata` (object)
- `text` (string)
- `title` (string)
- `url` (string)

### `list_indications` (~76 tokens)

List all indications on mechoulam.de with slug, name, category, count of reviewed studies and the citable page URL.

Input parameters:

- `lang` (string): Language of the answer and of the cited source URL. 'de' (default) cites mechoulam.de/..., 'en' cites mechoulam.de/en/...

### `get_indication` (~84 tokens)

Get the GRADE-rated evidence summary for one indication (reviewed studies only). Use a slug from list_indications.

Input parameters:

- `lang` (string): Language of the answer and of the cited source URL. 'de' (default) cites mechoulam.de/..., 'en' cites mechoulam.de/en/...
- `slug` (string, required): Indication slug

### `get_study` (~76 tokens)

Get one study by DOI with its per-indication verdicts (reviewed-only).

Input parameters:

- `doi` (string, required): Study DOI
- `lang` (string): Language of the answer and of the cited source URL. 'de' (default) cites mechoulam.de/..., 'en' cites mechoulam.de/en/...

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/de-mechoulam-cannabis-evidence/mechoulam#diagnostics

## Score history

- 2026-09-24: 79
- 2026-09-23: 79
- 2026-09-22: 78
- 2026-09-21: 78
- 2026-09-20: 77
- 2026-09-19: 77
- 2026-09-18: 76
- 2026-09-17: 76
- 2026-09-16: 75
- 2026-09-15: 75
- 2026-09-14: 74
- 2026-09-13: 74
- 2026-09-12: 73
- 2026-09-11: 73
- 2026-09-10: 73
- 2026-09-09: 72
- 2026-09-08: 70
- 2026-09-07: 69
- 2026-09-06: 69
- 2026-09-05: 68
- 2026-09-04: 68
- 2026-09-03: 67
- 2026-09-02: 67
- 2026-09-01: 66
- 2026-08-31: 66
- 2026-08-30: 65
- 2026-08-29: 65
- 2026-08-28: 64
- 2026-08-27: 64

## Common questions

### What is the mechoulam.de Cannabis Evidence Register MCP server?

mechoulam.de Cannabis Evidence Register is an MCP server listed in the public MCP registry as de.mechoulam/cannabis-evidence. GRADE-rated clinical evidence on cannabis as medicine (DE/EN). Search and cite studies. This page covers its hosted endpoint (https://mechoulam.de/mcp).

### Is the mechoulam.de Cannabis Evidence Register MCP server safe to use?

mechoulam.de Cannabis Evidence Register scores 79 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the mechoulam.de Cannabis Evidence Register MCP server expose?

mechoulam.de Cannabis Evidence Register exposes 5 tools: search, fetch, list_indications, get_indication, get_study. Their descriptions and schemas cost roughly 356 tokens of context every time the server is loaded.

### Does the mechoulam.de Cannabis Evidence Register MCP server require authentication?

No. We connected to mechoulam.de Cannabis Evidence Register without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the mechoulam.de Cannabis Evidence Register MCP server still maintained?

mechoulam.de Cannabis Evidence Register is still listed as active in the MCP registry. We last reached this channel on 24 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mechoulam.de/mcp
- Website: https://mechoulam.de/
- Changelog RSS feed: https://verifymcp.io/servers/de-mechoulam-cannabis-evidence/mechoulam.xml
- Changelog JSON feed: https://verifymcp.io/servers/de-mechoulam-cannabis-evidence/mechoulam.json
- HTML version of this page: https://verifymcp.io/servers/de-mechoulam-cannabis-evidence/mechoulam