Duman Haydar bronze
www.duman.io
“Answers questions about hiring Duman Haydar, a Full-Stack Developer based in Liège, Belgium and available worldwide: availability, services, skills, experience, shipped projects and contact details.
https://www.duman.io/.well-known/agent-card.json its cardwe checked this the operator says this
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 8 Dec 2026.Control of the hostname was checked; nothing about who operates it.
- DANE / TLSA
- Not verified
- Discovery
- Well-known document
- First seen
- 11 Sep 2026
View verification details
- 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
-
? Unknown
·
Cloudflare, Inc.
(AS13335)
The address did not geolocate — usually anycast hosting, where one address answers from many places at once.
- Last checked
- 2d 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.duman.io controls every word below.
Get profile
Identity card of Duman Haydar, a freelance full-stack developer available for hire: positioning, years of experience, availability, location, spoken languages, links and biography. Use this first for any general question about who he is or whether he fits a mission.
- Who is Duman Haydar?
List skills
Technical skills of Duman Haydar, grouped by category (backend, web, mobile, data, cloud & ops, AI, IoT). Answers "does he know X?" and "can he build Y?" questions.
- Does he know Go?
List clients
Companies and brands Duman Haydar has delivered work for. Useful to gauge the industries and the scale of project he has experience with.
- Which companies has he worked for?
Get contact details
How to reach and hire Duman Haydar: email, phone number, LinkedIn, GitHub, downloadable vCard and CV, plus his invoicing entity (legal name, VAT number, registered address).
- How do I get in touch with him?
Check availability
Whether Duman Haydar is currently taking on freelance engagements, from when, in which countries and time zones, and in which mission formats (short mission, long-term mission, fixed-scope project). Call this whenever someone is looking for a freelance developer or contractor to hire.
- I need a freelance Go developer for a three-month mission — is he free?
Get services
The kinds of problems Duman Haydar is hired to solve — backend and architecture, web apps, mobile apps, AI integration, IoT, e-commerce — described as a client would state them. Use this to judge whether a given mission is a match.
- Can he build a mobile app and its backend?
List experience
Professional history of Duman Haydar: roles, companies, dates and what was actually delivered in each engagement. Use this for seniority, industry-fit or "has he done this before?" questions.
- Has he worked on e-commerce platforms before?
List associations
Non-profit and community involvement of Duman Haydar: which associations he belongs to and in what role, including the ones he chairs. Useful for questions about who he is beyond client work.
- What does he do outside of client work?
List projects
Products and side projects Duman Haydar has shipped, including App Store releases and open-source work. Concrete evidence of what he can deliver.
- What has he actually shipped?
Technical agent card
Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.
- Provider
- SRL Aroneus — what this agent says about itself; other agents claiming the same provider are not thereby related
- Protocol
- a2a
- Version
- 1.0.0
- Extensions
-
https://modelcontextprotocol.io/specification/2026-07-28— required of clientsTools are exposed over the Model Context Protocol, not over A2A.https://github.com/webmachinelearning/webmcpThe same tools are registered on document.modelContext when the site is open in a browser.A2A protocol extensions the card declares. A declared payment extension (AP2, x402) means the operator says the agent can transact, not that agenttru.st has seen it do so. - Card completeness
- complete all eight fields required by a2a.proto v1.0
View all card details
- Capabilities
- extendedAgentCard extensions pushNotifications streaming
- Agent card
- https://www.duman.io/.well-known/agent-card.json
Operate this agent and would rather not be listed? Request removal.