{"$schema":"https://verifymcp.io/schemas/trust-report.json","schemaVersion":1,"license":{"name":"CC BY-NC 4.0","url":"https://creativecommons.org/licenses/by-nc/4.0/"},"generatedAt":"2026-11-06T13:26:39.832Z","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle","markdownUrl":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle.md","server":{"slug":"io-usefulapi-zettle","name":"Zettle MCP by usefulapi","registryName":"io.usefulapi/zettle","description":"Read sales, products, stock, balance and payouts; create products in Zettle.","registryStatus":"active","deletedAt":null,"statusMessage":null,"liveness":"live","publisher":{"class":"unknown","claimed":false}},"component":{"slug":"zettle","type":"remote","identifier":"https://zettle.usefulapi.io/mcp","withdrawn":false,"url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle","version":"1.4.4","transport":null,"scoredAt":"2026-11-06T13:05:47.640Z"},"score":{"total":18,"tier":"low","status":"scored","weekDelta":null,"history":[{"date":"2026-11-06","total":18},{"date":"2026-11-05","total":18},{"date":"2026-11-04","total":18},{"date":"2026-11-03","total":18},{"date":"2026-11-02","total":18},{"date":"2026-11-01","total":66},{"date":"2026-10-31","total":65}]},"categories":[{"name":"Endpoint Security","score":46,"verdict":"fail","reasons":["The endpoint's TLS certificate is valid, in date, and uses a strong key.","Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.","HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven.","HSTS check failed: the Strict-Transport-Security header is absent.","DNSSEC check failed: this domain isn't protected by DNSSEC."],"codes":[{"code":"tls.valid","args":{}},{"code":"auth.unreachable","args":{}},{"code":"https.inconclusive","args":{"reason":"redirect_not_https"}},{"code":"headers.hsts_absent","args":{}},{"code":"dnssec.absent","args":{}}]},{"name":"Transport & Reachability","score":0,"verdict":"fail","reasons":["Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly."],"codes":[{"code":"transport.redirected","args":{"transport":"streamable-http"}}]},{"name":"Schema Quality & AI Usability","score":0,"verdict":"unverified","reasons":["Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list."],"codes":[{"code":"schema.unreachable","args":{}}]},{"name":"Stability & Change Management","score":0,"verdict":"unverified","reasons":["Stability not yet verified: not enough scan history yet (needs a 30-day window)."],"codes":[{"code":"stability.insufficient_history","args":{}}]},{"name":"Tool Coverage","score":0,"verdict":"unverified","reasons":["Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list."],"codes":[{"code":"toolquality.unreachable","args":{}}]},{"name":"Tool Safety","score":0,"verdict":"unverified","reasons":["Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list."],"codes":[{"code":"toolsafety.unreachable","args":{}}]},{"name":"Capabilities","score":0,"verdict":"unverified","reasons":["Capabilities not yet verified: we couldn't read the endpoint's capabilities."],"codes":[{"code":"cap.unreachable","args":{}}]}],"inconclusive":["Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.","HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven.","Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.","Stability not yet verified: not enough scan history yet (needs a 30-day window).","Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.","Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.","Capabilities not yet verified: we couldn't read the endpoint's capabilities."],"malware":[],"components":[{"slug":"zettle","type":"remote","identifier":"https://zettle.usefulapi.io/mcp","withdrawn":false,"score":18,"current":true,"url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle","markdownUrl":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle.md"}],"facts":[{"label":"Endpoint","value":"https://zettle.usefulapi.io/mcp"},{"label":"Transports","value":"streamable-http"},{"label":"Auth","value":"none"},{"label":"Version","value":"1.4.4"}],"install":{"available":true,"bundleSha256":null},"tools":[{"name":"zettle_get_account","title":"Get account","description":"The Zettle user and organization this API key belongs to (uuid, organizationUuid). GET oauth.zettle.com/users/self.","inputs":[],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":35},{"name":"zettle_list_purchases","title":"List purchases","description":"List POS purchases (sales and refunds) with amount, currency, timestamp, products, discounts, payments, refund info and the cashier. Needs READ:PURCHASE. Amounts are in the smallest currency unit. Default window is the last 3 years. Page with next_page_hash (pass it back as last_purchase_hash with the same other arguments). GET /purchases/v2.","inputs":[{"name":"descending","type":"boolean","required":false,"description":"true = most recent first (default false: oldest first)."},{"name":"end_date","type":"string","required":false,"description":"Only purchases before this UTC date or date-time (exclusive), e.g. 2026-10-08."},{"name":"last_purchase_hash","type":"string","required":false,"description":"next_page_hash of the previous reply, for the next page."},{"name":"limit","type":"integer","required":false,"description":"Purchases per page, 1-1000 (default 25)."},{"name":"start_date","type":"string","required":false,"description":"Only purchases from this UTC date or date-time on (inclusive), e.g. 2026-10-01."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":209},{"name":"zettle_get_purchase","title":"Get purchase","description":"One purchase (sale or refund) in full by its purchase UUID (the purchaseUUID1 field of zettle_list_purchases; the older short purchaseUUID is deprecated and not accepted): line items, VAT, payments, refund links. Needs READ:PURCHASE. GET /purchase/v2/{purchaseUuid}.","inputs":[{"name":"purchase_uuid","type":"string","required":true,"description":"Purchase UUID: the purchaseUUID1 field (a UUID such as 589c2de6-3ee4-11eb-9e70-a2ac075b17fd)."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":117},{"name":"zettle_list_products","title":"List products","description":"List the products in the POS product library with variants (SKU, barcode, price, cost price, VAT), category, online status and ETag. Zettle returns the whole library at once; this tool slices it with limit/offset and filters by name. Needs READ:PRODUCT. Prices are in the smallest currency unit. GET /organizations/self/products/v2.","inputs":[{"name":"limit","type":"integer","required":false,"description":"Products to return, 1-200 (default 50)."},{"name":"name_contains","type":"string","required":false,"description":"Only products whose name contains this text (case-insensitive)."},{"name":"offset","type":"integer","required":false,"description":"Products to skip (default 0). Use next_offset of the previous reply."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":143},{"name":"zettle_get_product","title":"Get product","description":"One product by UUID with all variants, prices, VAT, category, images and online-store data. Needs READ:PRODUCT. GET /organizations/self/products/{productUuid}.","inputs":[{"name":"product_uuid","type":"string","required":true,"description":"Product UUID."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":54},{"name":"zettle_list_categories","title":"List categories","description":"List the product categories (uuid, name). Needs READ:PRODUCT. GET /organizations/self/categories/v2.","inputs":[],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":32},{"name":"zettle_get_library","title":"Get product library with discounts","description":"The product library together with its discounts (name, amount or percentage), paginated. Returns products, discounts and next_offset (pass it back as offset). Needs READ:PRODUCT. GET /organizations/self/library.","inputs":[{"name":"limit","type":"integer","required":false,"description":"Items per page, 1-500 (default 100)."},{"name":"offset","type":"integer","required":false,"description":"Position to start from (default 0); use next_offset of the previous reply."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":94},{"name":"zettle_create_product","title":"Create product","description":"WRITE: add a new product to the Zettle product library (it appears in the POS and, if enabled, the online store). Not idempotent: calling twice creates two products. Needs READ:PRODUCT and WRITE:PRODUCT. vat_percentage must be one of the VAT rates enabled in the merchant's Zettle settings. Prices are in the smallest currency unit. POST /organizations/self/products.","inputs":[{"name":"description","type":"string","required":false,"description":"Product description."},{"name":"name","type":"string","required":true,"description":"Product name."},{"name":"variants","type":"array","required":true,"description":"1-99 variants (a product without options has one)."},{"name":"vat_percentage","type":"number","required":true,"description":"VAT percent, e.g. 25. Must match a rate set in the merchant's Zettle account."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":155},{"name":"zettle_list_inventories","title":"List inventories (stock locations)","description":"List the stock locations (inventories): inventoryUuid, name, type (STORE, SOLD, SUPPLIER, BIN) and which is the default. Use the STORE inventoryUuid with zettle_get_stock. Needs READ:PRODUCT. GET /v3/inventories.","inputs":[],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":67},{"name":"zettle_get_stock","title":"Get stock balances","description":"Stock balances per product variant (balance, low-stock level and alert, last update). With inventory_uuid: that STORE inventory only; without: all stores. Only products with inventory tracking enabled appear. Needs READ:PRODUCT. Page with next_cursor. GET /v3/stock or /v3/stock/{inventoryUuid}.","inputs":[{"name":"cursor","type":"string","required":false,"description":"next_cursor of the previous reply, for the next page."},{"name":"inventory_uuid","type":"string","required":false,"description":"Limit to this inventory (see zettle_list_inventories)."},{"name":"limit","type":"integer","required":false,"description":"Balances per page, 1-1000 (default 100)."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":134},{"name":"zettle_get_stock_for_products","title":"Get stock for products","description":"Stock balances of a few specific products in one inventory (read-only lookup, nothing is changed). Needs READ:PRODUCT. Page with next_cursor (send the same product_uuids again). POST /v3/stock/{inventoryUuid}/products with the product UUIDs.","inputs":[{"name":"cursor","type":"string","required":false,"description":"next_cursor of the previous reply, for the next page."},{"name":"inventory_uuid","type":"string","required":true,"description":"The inventory (see zettle_list_inventories)."},{"name":"limit","type":"integer","required":false,"description":"Balances per page, 1-1000 (default 100)."},{"name":"product_uuids","type":"array","required":true,"description":"1-100 product UUIDs."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":141},{"name":"zettle_get_account_balance","title":"Get account balance","description":"The merchant's Zettle account balance (totalBalance in the smallest currency unit, currencyId). LIQUID = money available for payout; PRELIMINARY = payments not yet settled. Optional point in time. Needs READ:FINANCE. GET /v2/accounts/{LIQUID|PRELIMINARY}/balance.","inputs":[{"name":"account","type":"string","required":true,"description":"LIQUID (available for payout) or PRELIMINARY (not yet settled)."},{"name":"at","type":"string","required":false,"description":"Balance as of this UTC date-time (default now)."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":118},{"name":"zettle_list_account_transactions","title":"List account transactions","description":"Transactions (payments, fees, payouts, adjustments) in the LIQUID or PRELIMINARY account between start and end (end exclusive), with timestamp, amount (smallest currency unit, can be negative), type and originating transaction UUID. Needs READ:FINANCE. Page with next_offset. GET /v2/accounts/{account}/transactions.","inputs":[{"name":"account","type":"string","required":true,"description":"LIQUID or PRELIMINARY."},{"name":"end","type":"string","required":true,"description":"End, UTC date or date-time (exclusive), e.g. 2026-11-01."},{"name":"limit","type":"integer","required":false,"description":"Transactions per page, 1-1000 (default 100)."},{"name":"offset","type":"integer","required":false,"description":"Transactions to skip (default 0); use next_offset."},{"name":"start","type":"string","required":true,"description":"Start, UTC date or date-time (inclusive), e.g. 2026-10-01."},{"name":"types","type":"array","required":false,"description":"Only these transaction types (default all)."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":202},{"name":"zettle_get_payout_info","title":"Get payout info","description":"Payout information of the LIQUID account: totalBalance, currencyId, nextPayoutAmount, discountRemaining and payout periodicity. Needs READ:FINANCE. GET /v2/payout-info.","inputs":[{"name":"at","type":"string","required":false,"description":"As of this UTC date-time (default now)."}],"outputs":[],"hasOutputSchema":false,"hasExamples":false,"tokenEstimate":70}],"toolsTruncatedAtCapture":false,"diagnostics":{"capturedAt":"2026-11-06T13:05:47.000Z","track":"remote","endpoint":"https://zettle.usefulapi.io/mcp","declaredUrl":null,"truncated":false,"tls":{"outcome":"valid","label":"Valid","version":"TLS 1.3","cipherSuite":"TLS_AES_128_GCM_SHA256","chainError":null,"certificates":[{"subject":"CN=usefulapi.io","issuer":"CN=WE1,O=Google Trust Services,C=US","notBefore":"2026-09-13T08:55:39Z","notAfter":"2026-12-12T09:54:12Z","keyType":"ECDSA","keyBits":256,"isCa":false},{"subject":"CN=WE1,O=Google Trust Services,C=US","issuer":"CN=GTS Root R4,O=Google Trust Services LLC,C=US","notBefore":"2023-12-13T09:00:00Z","notAfter":"2029-02-20T14:00:00Z","keyType":"ECDSA","keyBits":256,"isCa":true},{"subject":"CN=GTS Root R4,O=Google Trust Services LLC,C=US","issuer":"CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE","notBefore":"2023-11-15T03:43:21Z","notAfter":"2028-01-28T00:00:42Z","keyType":"ECDSA","keyBits":384,"isCa":true}]},"dnssec":{"result":"insecure","label":"Not signed","name":"zettle.usefulapi.io.","steps":[{"zone":".","outcome":"verified","label":"Verified"},{"zone":"io.","outcome":"verified","label":"Verified"},{"zone":"usefulapi.io.","outcome":"insecure_proven","label":"Unsigned (proven)"}]},"auth":{"outcome":"inconclusive","label":"Inconclusive","gate":null,"gateLabel":null,"status":302,"authorizationServers":[]},"httpsRedirect":{"outcome":"inconclusive","label":"Inconclusive","status":302},"transports":[{"transport":"streamable-http","outcome":"redirected","label":"Redirected","status":302,"followed":false}],"provenance":null,"installScripts":[],"installScriptsTotal":null,"vulnerabilities":[],"vulnerabilitiesTotal":null,"dependencies":null},"mismatches":[],"changelog":{"trackingSince":"2026-10-31","recent":[{"id":"chg_01a1aee3-7120-7591-8519-fcd298f28279","kind":"score.rubric_changed","summary":"We updated how we score, so this day's move reflects our rubric, not a change to the server","materiality":"functional","direction":"neutral","scoreDelta":null,"occurredOn":"2026-11-06","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a1aee3-7120-7591-8519-fcd298f28279"},{"id":"chg_01a19a4b-e99d-76b2-91b1-5d1bc08247a6","kind":"check.unverifiable","summary":"Tool safety (pass → unverified)","materiality":"security","direction":"regression","scoreDelta":null,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e99d-76b2-91b1-5d1bc08247a6"},{"id":"chg_01a19a4b-e99e-79ed-b454-8adbcc8a2610","kind":"check.unverifiable","summary":"Authorization (pass → unverified)","materiality":"security","direction":"regression","scoreDelta":null,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e99e-79ed-b454-8adbcc8a2610"},{"id":"chg_01a19a4b-e99f-7503-a0b2-26be14a0f53f","kind":"check.unverifiable","summary":"Stability (0.03 → unverified)","materiality":"security","direction":"regression","scoreDelta":null,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e99f-7503-a0b2-26be14a0f53f"},{"id":"chg_01a19a4b-e9a0-7088-a64f-92f173dc154c","kind":"check.unverifiable","summary":"Schema quality (100 → unverified)","materiality":"functional","direction":"regression","scoreDelta":null,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e9a0-7088-a64f-92f173dc154c"},{"id":"chg_01a19a4b-e9a1-7e67-9b96-9def0fa6133b","kind":"check.unverifiable","summary":"Capabilities (pass → unverified)","materiality":"functional","direction":"regression","scoreDelta":null,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e9a1-7e67-9b96-9def0fa6133b"},{"id":"chg_01a19a4b-e9a2-7376-97d9-a467c37dc32e","kind":"check.unverifiable","summary":"Tool coverage (100 → unverified)","materiality":"functional","direction":"regression","scoreDelta":null,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e9a2-7376-97d9-a467c37dc32e"},{"id":"chg_01a19a4b-e9a5-707e-a3dd-6cd8e1567256","kind":"capture.status_changed","summary":"Endpoint reachability (reachable → not serving MCP)","materiality":"security","direction":"regression","scoreDelta":null,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e9a5-707e-a3dd-6cd8e1567256"},{"id":"chg_01a19a4b-e9a5-7546-8789-e0b410f493ae","kind":"score.total_changed","summary":"Trust score (66 → 18)","materiality":"functional","direction":"regression","scoreDelta":-48,"occurredOn":"2026-11-02","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19a4b-e9a5-7546-8789-e0b410f493ae"},{"id":"chg_01a19526-1419-7cad-bbb7-4acc120699b1","kind":"check.reverified","summary":"Stability (unverified → 0.03)","materiality":"functional","direction":"improvement","scoreDelta":null,"occurredOn":"2026-11-01","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19526-1419-7cad-bbb7-4acc120699b1"},{"id":"chg_01a19526-141a-7b31-adfe-3070bd6b3d8a","kind":"score.total_changed","summary":"Trust score (65 → 66)","materiality":"functional","direction":"improvement","scoreDelta":1,"occurredOn":"2026-11-01","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19526-141a-7b31-adfe-3070bd6b3d8a"},{"id":"chg_01a193fe-3282-714a-8bd8-4916656531c4","kind":"score.first_scored","summary":"First indexed and scored","materiality":"functional","direction":"neutral","scoreDelta":null,"occurredOn":"2026-10-31","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a193fe-3282-714a-8bd8-4916656531c4"},{"id":"chg_01a19356-0a07-70d5-8bac-05c93cc20181","kind":"score.first_scored","summary":"First indexed and scored","materiality":"functional","direction":"neutral","scoreDelta":null,"occurredOn":"2026-10-31","url":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle#chg-chg_01a19356-0a07-70d5-8bac-05c93cc20181"}],"truncated":false,"feedUrl":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle/changelog.json"},"links":{"html":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle","markdown":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle.md","changelogJson":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle/changelog.json","changelogRss":"https://verifymcp.io/servers/io-usefulapi-zettle/zettle.xml","external":[{"label":"Remote endpoint","href":"https://zettle.usefulapi.io/mcp"},{"label":"Repository","href":"https://github.com/m190/usefulapi-mcp"},{"label":"Website","href":"https://usefulapi.io/zettle/"}]}}