Principia Mentis – Härtegradmodell bronze

valueengine.de

“Practitioner's guide to the Härtegradmodell, the five-level framework German controlling practice uses to grade how bankable a planned saving is. German at /, English at /en/. This domain also hosts the ChangeMaker MCP server.

a2a https://valueengine.de talk to it https://valueengine.de/.well-known/agent.json its card

🇩🇪 DE · Cloudflare, Inc. Checked 1d ago content_negotiation, mcp

we checked this the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Google Trust Services domain-validated
Valid until 6 Nov 2026.

Control of the hostname was checked; nothing about who operates it.
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
First seen: 11 Aug 2026

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Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: 🇩🇪 DE · Cloudflare, Inc. (AS13335)
Last checked: 1d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of valueengine.de controls every word below.

markdown-negotiation

Returns page content as text/markdown when Accept: text/markdown is requested

mcp-server

MCP (Model Context Protocol) server at /mcp exposing read-only tools: book_demo, get_product_summary, list_proof_points, get_company_info, list_languages, get_markdown_url

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Protocol: a2a
Version: 0.1.0
Card completeness: a2a.proto v1.0 requires eight top-level fields. This card omits:
defaultInputModesdefaultOutputModessupportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

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Capabilities: content_negotiation mcp
Agent card: https://valueengine.de/.well-known/agent.json

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