# Kavra Siegel — Qualified eIDAS Timestamping (remote · siegel.kavra.cloud)

Qualified eIDAS RFC 3161 timestamping for AI workflow provenance. SIGNIUS/IDnow backbone.

- Trust score: 69/100 (medium)
- Change this week: +8
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-04

## Components

- remote · `siegel.kavra.cloud`: 69/100 (this document), [markdown](https://verifymcp.io/servers/mscharfetter-kavra-siegel/siegel.md), [page](https://verifymcp.io/servers/mscharfetter-kavra-siegel/siegel)

## Channel facts

- Endpoint: `https://siegel.kavra.cloud/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.0`

## 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 2026-08-04.

- **Endpoint Security**: 83/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, but the challenge carries no valid RFC 9728 metadata, so a client cannot discover where to get a token.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - 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**: 57/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 239 tokens (~79/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 90/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 71% of tool parameters carry a description.
- **Capabilities**: 20/100
  - Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http mscharfetter-kavra-siegel https://siegel.kavra.cloud/mcp
```

### Codex

```toml
[mcp_servers.mscharfetter-kavra-siegel]
url = "https://siegel.kavra.cloud/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mscharfetter-kavra-siegel": {
      "type": "remote",
      "url": "https://siegel.kavra.cloud/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mscharfetter-kavra-siegel --url https://siegel.kavra.cloud/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  mscharfetter-kavra-siegel:
    url: "https://siegel.kavra.cloud/mcp"
```

### Other

```json
{
  "mcpServers": {
    "mscharfetter-kavra-siegel": {
      "type": "http",
      "url": "https://siegel.kavra.cloud/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.

### 2026-08-03 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 67, +5)

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

### 2026-07-30 (score 62, 0)

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

### 2026-07-29 (score 62, +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 61, +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 60, 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 60)

First indexed and scored.

## MCP tools (3)

### `kavra_siegel_stamp_hash` (~111 tokens)

Erzeugt einen qualifizierten eIDAS-Zeitstempel für einen SHA-256-Hash. RFC 3161 via SIGNIUS/IDnow Trust Services AB (EU Trusted List).

Input parameters:

- `metadata` (object): Optional key-value metadata persisted with the stamp
- `sha256_hex` (string, required): Lowercase 64-char hex SHA-256 hash
- `tier` (string): Stamp tier (basic=hash-only, plus=with URL, sealed=full content)

### `kavra_siegel_stamp_content` (~90 tokens)

Erzeugt einen qualifizierten eIDAS-Zeitstempel für base64-encodierten Inhalt (max 1 MB). Hash wird serverseitig berechnet. RFC 3161 via SIGNIUS/IDnow.

Input parameters:

- `content_b64` (string, required): Base64-encoded content to stamp
- `metadata` (object)
- `tier` (string)

### `kavra_siegel_verify_token` (~38 tokens)

Verifiziert einen Stempel-Token anhand seiner UUID.

Input parameters:

- `token_id` (string, required): UUID of the stamp token to verify

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/mscharfetter-kavra-siegel/siegel#diagnostics

## Score history

- 2026-08-04: 69
- 2026-08-03: 69
- 2026-08-02: 68
- 2026-08-01: 68
- 2026-07-31: 67
- 2026-07-30: 62
- 2026-07-29: 62
- 2026-07-28: 61
- 2026-07-27: 60
- 2026-07-26: 60

## Links

- Remote endpoint: https://siegel.kavra.cloud/mcp
- Changelog RSS feed: https://verifymcp.io/servers/mscharfetter-kavra-siegel/siegel/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/mscharfetter-kavra-siegel/siegel/changelog.json
- HTML version of this page: https://verifymcp.io/servers/mscharfetter-kavra-siegel/siegel