Mastercard Max bronze
sandbox.max.mastercard.com
“Conversational assistant for Mastercard cardholder benefits. Answers questions about a cardholder's enrolled benefits and surfaces Priceless experiences and offers, grounded strictly in the cardholder's own entitlements. Each call is one complete turn: Max keeps no memory between calls, so every message must stand alone and carry everything Max needs (the city for a Priceless search, the benefit name for a detail), with no reference to an earlier message or reply. The detail of an item Max returned is fetched by sending back that item's OPEN_DETAIL call to action, and a Collection tile's Explore call to action (RENDER_LIST or AGENT_PROMPT) is sent back the same way: unchanged, as the message's only part, a data part. How to ask: send the cardholder's question in the cardholder's own words and language, since Max replies in the language of the message, and set Accept-Language to their locale as one language tag, such as pt-BR, not a weighted list. Max decides where to look from those words: a question that say
https://sandbox.max.mastercard.com/.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
-
MasterCard International Incorporated — vetted by the certificate authority.
Issued by DigiCert Inc organisation-validatedValid until 8 May 2027 as of our check on 9 Nov 2026.Key RSA 2048, signed SHA256-RSA, issued via DigiCert Global G2 TLS RSA SHA256 2020 CA1 under DigiCert Global Root G2 — classical, as every publicly trusted certificate is today.Names on this certificate (1)
sandbox.max.mastercard.com. - 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 (TLSA query returned RCodeNameError)
- Discovery
- Well-known document
- First seen
- 9 Nov 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
- 🇺🇸 US · Amazon.com, Inc. (AS16509)
- 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 sandbox.max.mastercard.com controls every word below.
List enrolled benefits
Browse the benefits the cardholder is enrolled in, optionally narrowed to a category, returning benefit names with short descriptions. Use when the cardholder asks which benefits they have: all of them, a category such as travel, insurance or lounges, or the ones for a situation such as a car rental. A broader ask in the cardholder's words, such as perks or what the card gives on a trip, is answered from benefits and Priceless experiences together, so send it as the cardholder wrote it.
- What benefits do I have on my card?
- What travel benefits do I have?
- List every benefit on my card. I want the complete list, not highlights.
- What Mastercard Collection benefits do I have?
- Am I eligible for airport lounge access with this card? Yes or no.
- What perks do I get with this card when I travel?
Get benefit detail
Retrieve the full detail for a single enrolled benefit, including its long description, supporting documents, and call-to-action links. Use when the cardholder asks what one benefit covers, how to use it or what its conditions are. Name the benefit, or describe it in the cardholder's words, inside a question rather than as a bare name. For a benefit picked from a list Max returned (the second one, that one), send back that tile's OPEN_DETAIL call to action as the message's only part.
- Tell me more about my Purchase Protection benefit.
- I know I have some kind of airport lounge thing. What is it called and what do I get?
- Can I use a VIP lounge at Guarulhos airport with my card?
- Picking up a rental car at the airport in an hour. Does my card cover it, and what does it cover?
- My flight is delayed five hours. What does my Trip Delay benefit cover?
- Como funciona o seguro para aluguel de carro do meu cartão?
Search Priceless experiences
Search Mastercard Priceless experiences and offers, filtered by category and location, returning matching products with short descriptions. A city is required: without one, Max replies with a question asking for a city or a type of experience. Use when the cardholder wants experiences, dining, events or gift ideas in a place. When a city has no catalogue Max falls back to its country, and it says so plainly when a place has none.
- I'm in London next week. Any food or dining experiences through Priceless?
- What Priceless experiences are there in Seoul?
- Any Priceless experiences in Rio de Janeiro I can do with kids?
- I play golf. Any Priceless golf experiences in Miami?
- Looking for a Priceless experience to give as a Christmas gift. What do you have?
- Show me Priceless dining experiences.
Get Priceless experience detail
Retrieve the full detail for a single Priceless experience or offer, including its long description and product link. Use when the cardholder asks about one experience from a list Max returned. Send back the experience tile's OPEN_DETAIL call to action from a search result as the message's only part; a text message naming an experience is answered with a question, since Max cannot pin one experience from text alone.
- {"action": "OPEN_DETAIL", "target": {"itemId": "<itemId from the tile>", "source": "priceless-search-results"}}
agenttru.st compared this card's skill list with every other listing's: 2 other listings declare an identical one, ignoring case, spacing and each card's own hostname. See all 3. That says the cards' text is the same, not who runs them.
What kind of listing
- Test or staging name: Its hostname carries the label “sandbox”, a name commonly given to test and staging sites.
Checked by agenttru.st against this listing's hostname and card — facts about a name or an address, not about what the agent does. How kinds are decided.
Technical agent card
Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.
- Protocol
- a2a
- Version
- 1.38.0-dev+g98478f6
- Auth schemes
- chatProxyBearer
- Card completeness
- complete all eight fields required by a2a.proto v1.0
View all card details
- Capabilities
- streaming
- Agent card
- https://sandbox.max.mastercard.com/.well-known/agent-card.json
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