{"id":"ucp-mcp-server","name":"ucp-mcp-server","homepage":"https://pypi.org/project/ucp-mcp-server/","repo_url":"https://github.com/nguthrie/ucp-mcp-server","category":"ai-ml","subcategories":[],"tags":["mcp","ucp","commerce","shopping","payments","agent-tools","python"],"what_it_does":"Provides an MCP server exposing UCP (Universal Commerce Protocol) shopping flows as callable tools for AI assistants, including merchant capability discovery, checkout creation, checkout updates (discounts), fulfillment/shipping setup, and checkout completion/payment submission.","use_cases":["AI-assisted shopping for UCP-enabled merchants (capability discovery -> checkout -> payment)","Automating checkout steps in an MCP-compatible assistant (discounts, shipping selection, order completion)","Building agent workflows that require structured commerce operations instead of scraping"],"not_for":["General web browsing or commerce automation for non-UCP merchants","Handling arbitrary card data storage/processing within the client (expects payment tokenization inputs)","Production use where strict observability/auditability and robust failure semantics are required without further verification"],"best_when":"When you have UCP-enabled merchants and want an MCP tool interface to standardize the commerce workflow end-to-end.","avoid_when":"When merchants are not UCP-enabled, when you need advanced post-purchase flows (returns/exchanges, fulfillment tracking) that are not implemented, or when you require documented retry/idempotency guarantees that aren’t provided here.","alternatives":["Use the UCP APIs directly from your own backend/service","Build a custom integration per merchant (non-UCP)","Use a different MCP commerce integration if available for your target merchants"],"af_score":48.0,"security_score":41.8,"reliability_score":20.0,"package_type":"mcp_server","discovery_source":["pypi"],"priority":"low","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-04-04T21:41:02.562442+00:00","interface":{"has_rest_api":false,"has_graphql":false,"has_grpc":false,"has_mcp_server":true,"mcp_server_url":null,"has_sdk":false,"sdk_languages":[],"openapi_spec_url":null,"webhooks":false},"auth":{"methods":[],"oauth":false,"scopes":false,"notes":"No authentication mechanism for the MCP server or UCP merchant calls is described in the provided README/manifest. Authentication/authorization likely depends on the downstream UCP merchant API behavior, but this is not specified here."},"pricing":{"model":null,"free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"No pricing information provided; appears to be an open-source/self-hosted package."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":48.0,"security_score":41.8,"reliability_score":20.0,"mcp_server_quality":70.0,"documentation_accuracy":70.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":30.0,"rate_limit_clarity":20.0,"tls_enforcement":70.0,"auth_strength":30.0,"scope_granularity":20.0,"dependency_hygiene":55.0,"secret_handling":40.0,"security_notes":"From the provided materials, TLS enforcement, auth model, and secret-handling practices are not explicitly documented. The tool interface includes payment token submission inputs (card_token, card_brand, last digits), which suggests tokenization rather than raw PAN handling, but the actual security/privacy handling in code is not verifiable from the README alone.","uptime_documented":0.0,"version_stability":35.0,"breaking_changes_history":20.0,"error_recovery":25.0,"idempotency_support":"false","idempotency_notes":null,"pagination_style":"none","retry_guidance_documented":false,"known_agent_gotchas":["Payment completion is a state-changing step; an agent should avoid retries without explicit idempotency semantics from the tool implementation.","The fulfillment tool auto-selects the first available address/delivery option; agents may need to ensure the user’s shipping preferences are correctly represented.","Discount codes and checkout updates are stateful; agents should pass the correct checkout_id/session consistently across calls."]}}