Jasswiki MCP Server

JassWiki MCP — Authority-Attested Knowledge Server for Swiss Jass

Erste vom Schweizer Jassverband (JVS) attestierte MCP-Quelle. Kryptographisch verifizierbar via did:web:jassverband.ch.

JassWiki MCP gibt KI-Assistenten (Claude, ChatGPT-Connectors, Perplexity, Gemini Agentspace) direkten Zugriff auf die offizielle Schweizer Jass-Wissensbasis: 520+ kuratierte Artikel zu Regeln, Spielvarianten, Terminologie, Geschichte und Taktik. Inhalte sind durch den Jassverband Schweiz (Wikidata: Q139042763) als offizielle Wissens-Quelle attestiert.

This is the first production deployment of the AMCP v0.1 specification, developed by Agentic Relations (Architect: Remo Prinz). It demonstrates how organisations and federations can become cryptographically verifiable knowledge sources for AI agents — beyond traditional SEO and brand visibility.

Trust-Chain:

• 🇨🇭 Bundesamt für Kultur — Lebendige Tradition seit 2011
• 📖 Zitiert in deutschsprachigem Wikipedia-Artikel "Jass"
• 🆔 Wikidata: JassWiki Q137900251, Jass Q786768
• 🔐 Ed25519-signierte JVS-Attestation (detached signature)

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Installation

Claude Desktop (Streamable HTTP via mcp-remote)

Add to claude_desktop_config.json (~/Library/Application Support/Claude/ on macOS):

{
  "mcpServers": {
    "jasswiki": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://us-central1-jassguru.cloudfunctions.net/mcp/sse"
      ]
    }
  }
}

Restart Claude Desktop. The jasswiki server will appear with two tools.

Direct SSE / HTTP (for any MCP-compatible client)

SSE Endpoint:    https://us-central1-jassguru.cloudfunctions.net/mcp/sse
Messages POST:   https://us-central1-jassguru.cloudfunctions.net/mcp/messages
Health:          https://us-central1-jassguru.cloudfunctions.net/mcp/health
Manifest:        https://jasswiki.ch/.well-known/mcp.json
Authority:       https://jassverband.ch/.well-known/mcp-authority.json
DID Document:    https://jassverband.ch/.well-known/did.json

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Tools

search_jass_knowledge(query, limit?)

Fuzzy-search across the official JassWiki encyclopedia (520+ articles). Returns matching titles, IDs, URLs, and content excerpts.

Example:

search_jass_knowledge(query="Schieber-Regeln", limit=3)

get_term_details(id)

Retrieve the full official rule or definition for a specific term ID. Use after search_jass_knowledge for verification of exact wording.

Example:

get_term_details(id="schieber")

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Example Conversations

Rule clarification:

User: "What are the official rules for Schieber-Jass?" AI: [calls search_jass_knowledge] → Returns the canonical Schieber-rules sourced from JassWiki.ch with authority footer.

Variant lookup:

User: "Difference between Coiffeur-Schieber and Differenzler?" AI: [calls search_jass_knowledge for both] → Returns comparison sourced from official terminology.

Tactical reference:

User: "Welche Verwerfen-Konventionen gibt es im Schieber?" AI: [calls search_jass_knowledge] → Returns tactical signaling conventions with citation.

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Verifying the Authority Attestation

The JassWiki MCP server is the first MCP service in Switzerland with cryptographically verifiable authority attestation. Any MCP client or third-party verifier can independently confirm:

# 1. Fetch the attestation document
curl -s https://jassverband.ch/.well-known/mcp-authority.json -o attestation.json

# 2. Fetch the detached Ed25519 signature
curl -s https://jassverband.ch/.well-known/mcp-authority.sig -o attestation.sig.b64url

# 3. Fetch the JVS public key (DID document)
curl -s https://jassverband.ch/.well-known/did.json | jq -r '.verificationMethod[0].publicKeyJwk.x'

# 4. Verify (Python with PyNaCl)
python3 <<'EOF'
import json, base64, urllib.request, nacl.signing
doc = json.load(open('attestation.json')); doc.pop('proof', None)
canonical = json.dumps(doc, sort_keys=True, separators=(',', ':'), ensure_ascii=False).encode('utf-8')
sig = base64.urlsafe_b64decode(open('attestation.sig.b64url').read().strip() + '==')
pub_b64 = json.load(urllib.request.urlopen('https://jassverband.ch/.well-known/did.json'))['verificationMethod'][0]['publicKeyJwk']['x']
nacl.signing.VerifyKey(base64.urlsafe_b64decode(pub_b64 + '==')).verify(canonical, sig)
print('✓ Attestation cryptographically verified — JassWiki is officially attested by Jassverband Schweiz')
EOF

The attestation is governed by JVS Vorstandsbeschluss 2026-05-04 (JVS-VS-2026-05-04-AMCP-01).

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Specification: AMCP v0.1 (Authority-MCP)

JassWiki MCP is the first production implementation of AMCP v0.1 (Authority-MCP) — an extension layer on top of Anthropic's MCP that adds:

• Identity: DID:web for the authority
• Provenance: Ed25519 signatures on attestation documents
• Wikidata Anchoring: every domain entity has a QID
• Versioning: attestations are time-bounded with validFrom / validUntil
• Citation Format: Schema.org JSON-LD pre-rendered for LLM consumption

Architect & Specification Owner: Agentic Relations — founder/architect: Remo Prinz. The full specification will be published at agenticrelations.ch/specs/amcp. The methodology applies to any organisation, federation, public-sector body, or association that wants to become a cryptographically verifiable knowledge source in the agentic web.

Feedback and adoption inquiries: open an issue or contact architect@agenticrelations.ch.

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Operator & Authority

• MCP Operator: JassWiki (curator: Remo Prinz, remo@jassverband.ch)
• Attestor: Jassverband Schweiz (JVS) — did:web:jassverband.ch
• Co-Founder JassWiki: Fabian Cadonau (Trumpf-As.ch)

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Data & Licensing

• Content: CC-BY-SA 4.0
• Bulk corpus: HuggingFace JassWiki/jasswiki-corpus (JSONL)
• SKOS Taxonomy: jasswiki.ch/dataset/taxonomie.jsonld
• Attestation documents (mcp.json, did.json, mcp-authority.json): CC0

Attribution must include the JassWiki.ch link and indicate any modifications.

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Status & Reliability

• Production since: January 2026
• Hosting: Firebase Cloud Functions, region us-central1 (low-latency global)
• Languages supported: German (primary), French, Italian, English (ongoing expansion)
• Uptime SLA: Best-effort (99.5%+ historical)

For service incidents or schema changes, watch the GitHub releases.

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Contributing

JassWiki content is curated. To suggest factual corrections, terminology updates, or new variants:

1. Open an issue on JassWiki GitHub (the public site repo)
2. Or contact directly: remo@jassverband.ch
3. New entries are reviewed by JVS (4-eyes principle) before publishing

The MCP server itself (this repository) accepts PRs for documentation improvements, examples, and submission metadata.

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Erste öffentlich-rechtliche Authority-MCP der Schweiz. The first publicly attested MCP knowledge server in Switzerland.