UCP Checker
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UCP status report

alpha-stream.agentdiet.dev

Verified

alpha-stream.agentdiet.dev publishes a valid UCP profile. That is what it declares. An observed agent run shows how far an agent actually gets.

ShopwareREST, Embedded, MCPHTTP 200 in 101 msrelease 2026-08-25

UCP Score 100/100 grade A · ready for UCP agents To fix 0 nothing to fix
Passed 16 checks
Checked 21 Oct 11:50 UTC · public requests

Findings

16 passed · 0 to fix
Discovery
OK
HTTPS
https
Profile URL uses https://
https
OK
UCP profile reachable
/.well-known/ucp
HTTP 200
/.well-known/ucp
OK
AI bot access
robots.txt
robots.txt allows /.well-known/ucp
robots.txt
UCP profile
OK
Profile passes schema validation
ucp
No structural errors
ucp
OK
Protocol version present and well-formed
ucp.version
Version: 2026-08-25
ucp.version
OK
Public keys published
keys
Keys published at the top level
keys
OK
No validation warnings
ucp
No outstanding validation issues
ucp
Services
OK
Capabilities declared
capabilities
6 of 6 capability families detected: Checkout, Identity Linking, Cart Management, Order Management, Payment Token Exchange, Catalog. A family counts once however many namespaces or extensions declare it.
capabilities
OK
Checkout capability
shopping.checkout
dev.ucp.shopping.checkout detected
shopping.checkout
OK
Transports declared
services
REST, Embedded, MCP
services
OK
Payment handlers
payment_handlers
2 handlers registered
payment_handlers
Outside UCP
OK
llms.txt
/llms.txt
Found at /llms.txt
/llms.txt
OK
sitemap.xml
/sitemap.xml
Found at /sitemap.xml
/sitemap.xml
OK
Open Graph tags
og: meta
og:title and og:type/url present
og: meta
OK
Organization schema (JSON-LD)
JSON-LD
Organization-typed JSON-LD detected
JSON-LD
OK
Mobile viewport meta
meta viewport
<meta name="viewport"> present
meta viewport
Check trace

How alpha-stream.agentdiet.dev answered our check

The five ways an agent can reach this store, what each one met, and every request we made.

2 of 5 open
4 requests · 101 ms at the store · public requests only
  1. 01Hosting ↗
    Finding the profile
    Open
  2. 02Identity Linking ↗
    Acting for the buyer
    Offered
  3. 03Embedded ↗
    In the buyer's browser
    Declared
  4. 04Services ↗
    Calling its services
    Declared
  5. 05continue_url ↗
    Sending the buyer to the website
    Not declared
UCP Checkerpublic requests
  • 2 requestsFinding the profile/.well-known/ucp · 200
  • read from profileActing for the buyerdeclared
  • not calledIn the buyer's browserEmbedded · declared
  • not calledCalling its servicesREST, MCP · declared · 13 tools
  • read from profileSending to the websitenot declared
  • 2 requestsOutside UCPhomepage · /llms.txt
Open
01 · Finding the profile2 requests
Served at /.well-known/ucp with 200 OK, 7.5 KB. robots.txt allows /.well-known/ucp.
Offered
02 · Acting for the buyerread from profile
Identity linking is declared.
Declared
03 · In the buyer's browsernot called
Declared. We don't call it, so whether it works shows only in an agent run.
Declared
04 · Calling its servicesnot called
The REST service is declared; not called by this check. The MCP service is declared; not called by this check.
Not declared
05 · Sending the buyer to the websiteread from profile
No permalink declared. Whether error replies carry a continue_url shows only in an agent run.
  1. 01 PROFILEGET /.well-known/ucp → 200, 7.5 KB of JSON101 ms
  2. 01 PROFILEGET /robots.txt → allows /.well-known/ucp–
  3. 01 PROFILEValid against the 2026-08-25 schema; keys publishedlocal
  4. 03 NOTEEmbedded service declared; not called by this check–
  5. OUTSIDE UCPGET / → 200, Organization schema found–
  6. OUTSIDE UCPGET /llms.txt → 200, 2.2 KB–

MCP tools

13 listed · 13 of 13 the spec expects

The tools alpha-stream.agentdiet.dev's MCP service listed when we asked (tools/list), grouped by the capability in its profile that calls for them.

Catalog searchdev.ucp.shopping.catalog.search
search_catalog
Catalog lookupdev.ucp.shopping.catalog.lookup
lookup_catalogget_product
Cartdev.ucp.shopping.cart
create_cartget_cartupdate_cartcancel_cart
Checkoutdev.ucp.shopping.checkout
create_checkoutget_checkoutupdate_checkoutcomplete_checkoutcancel_checkout
Orderdev.ucp.shopping.order
get_order

Capabilities

12 declared, all at 2026-08-25
Cart shopping.cart
Order Management shopping.order
Checkout shopping.checkout
Discountextension shopping.discount
Fulfillmentextension shopping.fulfillment
Location Lookup common.location.lookup
Location Search common.location.search
Buyer Consentextension shopping.buyer_consent
Identity Linking common.identity_linking
Catalog Lookup shopping.catalog.lookup
Catalog Search shopping.catalog.search
AP2 Mandateextension common.payment.ap2_mandate

Payment handlers

2 declared
Session Credit stripe-mpp-pass
Delegate Checkout x402-base-usdc
UCP profile as served 9.2 KB · 209 lines 
{
    "ucp": {
        "version": "2026-08-25",
        "services": {
            "dev.ucp.common": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "schema": "https://ucp.dev/2026-08-25/services/common/rest.openapi.json",
                    "version": "2026-08-25",
                    "endpoint": "https://alpha-stream.agentdiet.dev/ucp",
                    "transport": "rest"
                },
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/embedded.openrpc.json",
                    "version": "2026-08-25",
                    "endpoint": "https://alpha-stream.agentdiet.dev/ucp/embedded-checkout",
                    "transport": "embedded"
                },
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "schema": "https://ucp.dev/2026-08-25/services/common/mcp.openrpc.json",
                    "version": "2026-08-25",
                    "endpoint": "https://alpha-stream.agentdiet.dev/ucp/mcp",
                    "transport": "mcp"
                }
            ],
            "dev.ucp.shopping": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/rest.openapi.json",
                    "version": "2026-08-25",
                    "endpoint": "https://alpha-stream.agentdiet.dev/ucp",
                    "transport": "rest"
                },
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/embedded.openrpc.json",
                    "version": "2026-08-25",
                    "endpoint": "https://alpha-stream.agentdiet.dev/ucp/embedded-checkout",
                    "transport": "embedded"
                },
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/mcp.openrpc.json",
                    "version": "2026-08-25",
                    "endpoint": "https://alpha-stream.agentdiet.dev/ucp/mcp",
                    "transport": "mcp"
                }
            ]
        },
        "capabilities": {
            "dev.ucp.shopping.cart": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/cart",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/cart.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.order": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/order",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/order.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.checkout": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/checkout",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/checkout.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.discount": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/discount",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/discount.json",
                    "extends": [
                        "dev.ucp.shopping.checkout",
                        "dev.ucp.shopping.cart"
                    ],
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.fulfillment": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/fulfillment",
                    "config": {
                        "multi_destination": [],
                        "method_combinations": [
                            [
                                "digital_api_delivery"
                            ]
                        ]
                    },
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/fulfillment.json",
                    "extends": "dev.ucp.shopping.checkout",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.common.location.lookup": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/common/location/lookup",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/location_lookup.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.common.location.search": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/common/location/search",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/location_search.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.buyer_consent": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/buyer-consent",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/buyer_consent.json",
                    "extends": "dev.ucp.shopping.checkout",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.common.identity_linking": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/common/identity-linking/",
                    "config": {
                        "scopes": {
                            "dev.ucp.shopping.order:read": [],
                            "dev.ucp.shopping.checkout:manage": []
                        }
                    },
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/identity_linking.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.catalog.lookup": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/lookup",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_lookup.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.catalog.search": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/search",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_search.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.common.payment.ap2_mandate": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/payment/extensions/ap2-mandates",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/payment_ap2_mandate.json",
                    "extends": "dev.ucp.shopping.checkout",
                    "version": "2026-08-25"
                }
            ]
        },
        "instructions": "Browse B2A/MCP API credits and tools via search_catalog or lookup_catalog, create a checkout session with create_checkout, and complete settlement via x402 Base Mainnet USDC (0xEC5275D5b03bc390FcA63D902d0B2D0Db2eb5573) or Stripe MPP session pass.",
        "payment_handlers": {
            "com.stripe.mpp.session_credit": [
                {
                    "id": "stripe-mpp-pass",
                    "config": {
                        "partial_payment": false,
                        "requires_identity_linking": false
                    },
                    "version": "2026-08-25"
                }
            ],
            "org.x402.payment.delegate_checkout": [
                {
                    "id": "x402-base-usdc",
                    "config": {
                        "payTo": "0xEC5275D5b03bc390FcA63D902d0B2D0Db2eb5573",
                        "network": "eip155:8453",
                        "currency": "USDC",
                        "store_url": "https://alpha-stream.agentdiet.dev",
                        "checkout_url": "https://alpha-stream.agentdiet.dev/api/v1/billing/checkout"
                    },
                    "version": "2026-08-25"
                }
            ]
        },
        "supported_versions": {
            "2026-01-23": "https://alpha-stream.agentdiet.dev/.well-known/ucp?version=2026-01-23"
        }
    },
    "keys": [
        {
            "x": "8qIKqDM0qg6uy39ZQHvJXr85Qw0X_piFz6golCsE7eE",
            "y": "U7t1GXTNuSOvnoHAY2djNOV3zVnZyaatCY_0oSTrEQY",
            "alg": "ES256",
            "crv": "P-256",
            "kid": "imperium-ucp-p256-2026",
            "kty": "EC",
            "use": "sig"
        },
        {
            "x": "bcbWwOzGnHjDuz4LNC2nRPujrSs12_orR9xlXZLdFb8",
            "y": "lvUXMulVOpNxLNqe3j7LGcSd1i-Day1w_jltLOg3bHA",
            "alg": "ES256",
            "crv": "P-256",
            "kid": "imperium-ap2-p256-2026",
            "kty": "EC",
            "use": "sig"
        }
    ]
}
What goes in a UCP profile →Check your JSON in the Validator →Guides by store platform →
/llms.txt as served 2.2 KB 
# AgentDiet Alpha-Stream — Stateful 5-Minute DeFi, DEX & Polymarket Delta Feed

> Unified multi-signal crypto, DeFi yield, whale orderflow, and prediction-market delta alpha stream for trading agents.

**AgentDiet Alpha-Stream — Stateful 5-Minute DeFi, DEX & Polymarket Delta Feed** (`https://alpha-stream.agentdiet.dev`) is a production B2A, A2A v0.3.0, Streamable HTTP MCP (2025-11-25), x402 v2 (Base, Arbitrum, Polygon, Optimism, Avalanche USDC to `0xEC5275D5b03bc390FcA63D902d0B2D0Db2eb5573`), IETF MPP, and L402 execution node. Free zero-cost sandbox previews are available at `GET https://alpha-stream.agentdiet.dev/v1/try/alpha-stream`.

## Documentation

- [Overview & Quickstart](https://alpha-stream.agentdiet.dev/index.md): Architecture overview, free sandbox endpoints, and autonomous payment rails
- [Agent Skill & Integration Guide](https://alpha-stream.agentdiet.dev/AGENTS.md): Installation commands, MCP client configuration, and usage examples
- [Sitemap & Documentation Hierarchy](https://alpha-stream.agentdiet.dev/sitemap.md): Complete markdown hierarchy of all pages and protocol endpoints
- [Protocol & Terminology Glossary](https://alpha-stream.agentdiet.dev/glossary.md): Definitions for x402, IETF MPP, L402, A2A, MCP, OASF, and ERC-8004
- [Pricing & Plans](https://alpha-stream.agentdiet.dev/pricing.md): Free sandbox tier, $0.002/call x402 micropayments, Pro Monthly, and Enterprise SLA

## API & Protocol Manifests

- [OpenAPI 3.1 Specification](https://alpha-stream.agentdiet.dev/openapi.json): Complete REST API, x402 v2, and IETF MPP payment specification
- [A2A v0.3.0 Agent Card](https://alpha-stream.agentdiet.dev/.well-known/agent-card.json): Linux Foundation Agent-to-Agent discovery card and skills manifest
- [MCP Server Card](https://alpha-stream.agentdiet.dev/.well-known/mcp.json): Model Context Protocol Streamable HTTP server card (SEP-2127)
- [Wildcard agents.json](https://alpha-stream.agentdiet.dev/.well-known/agents.json): Wildcard agents.json v0.1.0 operation flows
- [x402 v2 Payment Discovery](https://alpha-stream.agentdiet.dev/.well-known/x402): 5-chain EVM USDC x402 resource manifest
- [Full LLM Documentation](https://alpha-stream.agentdiet.dev/llms-full.txt): Extended API schemas, sample payloads, and multi-agent workflow reference
Is alpha-stream.agentdiet.dev your store?
Claim it with one DNS record.
Claim this store Send an agent to shop here ↗

Status badge

Markdown · 
[![UCP Status](https://ucpchecker.com/badge/alpha-stream.agentdiet.dev)](https://ucpchecker.com/status/alpha-stream.agentdiet.dev)

Questions

Can UCP agents buy from alpha-stream.agentdiet.dev?
Through its REST and MCP services, an agent can search the catalogue, build a cart and start a checkout. This is what the store declares and what our check reached; an observed agent run shows how far an agent actually gets.
Is alpha-stream.agentdiet.dev ready for UCP agents?
alpha-stream.agentdiet.dev publishes a valid UCP profile and scores 100/100 (grade A). Our check found nothing to fix.
What is a UCP profile?
The JSON file a store publishes at /.well-known/ucp to tell UCP agents which services it offers, how to call them and how it takes payment. The spec calls it the business profile. alpha-stream.agentdiet.dev's is 7.5 KB, written for UCP 2026-08-25. What goes in a UCP profile.
How was alpha-stream.agentdiet.dev checked?
With public requests on 21 Oct 2026: we read /.well-known/ucp and robots.txt, validated the profile against UCP 2026-08-25, checked that its spec and schema links resolve. No sign-in and no purchase. How we check.