Stefan “Steve” Preu’s AI representative bronze

www.preu.at

“An AI (not Stefan himself) that answers questions about Stefan “Steve” Preu, agentic systems architect in Austria: his work, projects such as PM CLI, his ideas and how he approaches problems with agents. Grounded in curated knowledge with citations; says when it does not know. It never sends messages or makes commitments for Stefan.

a2a https://bot.unbrained.dev/a2a talk to it https://www.preu.at/.well-known/agent-card.json its card

🇦🇹 AT · Cloudflare, Inc. Checked 5d ago extendedAgentCard, pushNotifications, streaming

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 27 Dec 2026 as of our check on 9 Nov 2026. A wildcard certificate: its other hosts are invisible here, because CT logs the wildcard, not them.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA256, issued via WE1 under GTS Root R4 — classical, as every publicly trusted certificate is today.

Names on this certificate (2)

preu.at, *.preu.at.
Connection: TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 9 Nov 2026. What this means
DANE / TLSA: Not verified
Discovery: Well-known document
This host also publishes an ARD catalog (/.well-known/ai-catalog.json) declaring 5 resources. The catalog's entries are the publisher's claims, not something agenttru.st verified.
AI use policy: Search: yesAI input: yesAI training: yes

Content licence (RSL): https://preu.at/license.xml

What this site's robots.txt says about how AI may use its content. Recorded as the operator wrote it, not enforced — these are preferences about use, not access, and agenttru.st only reads the agent's own discovery documents.
AI-facing documents: Publishes /llms.txt — “Stefan Preu” a curated map of the site's content for language models

Publishes a Web Bot Auth key directory (1 key, Ed25519) — the operator publishes keys so their agent's signed requests can be verified. agenttru.st recorded that the directory exists; it has not verified a signature.

Fetched from this host during verification. Neither document is how this agent was discovered.
First seen: 2 Nov 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: 🇦🇹 AT · Cloudflare, Inc. (AS13335)
Last checked: 5d 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 www.preu.at controls every word below.

Ask about Stefan

Grounded answers about Stefan’s work, projects, ideas and engineering judgment, with source labels; questions about roles, consulting or collaboration are answered too and routed to Stefan for anything concrete.

profileprojectspm cliagentic systems

Examples it gives

What is Stefan working on?
How does PM CLI keep context between agent sessions?

Explore an agentic-systems question

Talk through an agent harness, memory or workflow question the way Stefan approaches it; honest about uncertainty.

agentscontextmemoryworkflows

Examples it gives

We have coding agents producing too much output to review. Where would Stefan start?

What its catalog declares

From the ARD catalog this host publishes at /.well-known/ai-catalog.json. The operator controls every entry; agenttru.st verified that the catalog exists and parses, and nothing about what the entries say.

preu.at MCP server: Stefan Preu

mcp-server-card

Read-only facts, projects and pages from preu.at, the personal site of Stefan Preu, agentic systems architect in Austria.

https://preu.at/mcp/server-card

Agent skill: Stefan Preu, from preu.at

text/markdown

Answer questions about Stefan “Steve” Preu, agentic systems architect in Austria and creator of the open-source PM CLI, from his own site preu.at: who he is, what he has built, how he works, how to say his name and how to reach him (one contact form for roles, consulting projects and collaborations). Use when someone asks about Stefan Preu or Steve Preu, PM CLI and its author, or his work on context for AI agents. Read-only; it never sends messages for anyone.

https://preu.at/.well-known/agent-skills/stefan-preu/SKILL.md

Steve’s bot: MCP server

mcp-server-card

Ask Stefan “Steve” Preu’s AI representative and search its cited knowledge about his work; /mcp/private links a remembered visitor’s history via OAuth.

https://bot.unbrained.dev/mcp/server-card

Steve’s bot: A2A agent

a2a-agent-card

The same assistant over Agent2Agent 1.0 (JSON-RPC, streaming; v0.3 methods accepted).

https://bot.unbrained.dev/.well-known/agent-card.json

Steve’s bot: Agent skill and CLI

text/markdown

Instructions for agents with a shell: the zero-dependency unbrained-bot CLI (checksums at /cli/SHA256SUMS).

https://bot.unbrained.dev/.well-known/agent-skills/unbrained-bot/SKILL.md

Technical agent card

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

Provider: Stefan “Steve” Preu · unbrained.dev — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 2026-11-09
Auth schemes: bearer oauth
Card completeness: complete all eight fields required by a2a.proto v1.0

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Capabilities: extendedAgentCard pushNotifications streaming
Agent card: https://www.preu.at/.well-known/agent-card.json

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