MCP Server
label
io.github.theluckystrike/label
What this MCP does
Generates barcode, QR, payment, contact, and Wi-Fi labels in individual or batch form.
Capabilities
Tools
10
tools
barcode_batch
Barcodes in bulk
Call this tool to draw many barcodes or QR codes at once from a list of rows, each with its own value and file name. Every row comes back as its own download link valid for one hour. Pro; the free tier does one code per call.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['items'], 'properties': {'text': {'type': 'boolean', 'description': 'Print the digits under the bars (default true)'}, 'items': {'type': 'array', 'items': {'type': 'object', 'required': ['value'], 'properties': {'value': {'type': 'string', 'description': 'The data to encode'}, 'filename': {'type': 'string', 'description': 'File name without an extension. Defaults to the value, made safe'}, 'symbology': {'enum': ['code128', 'ean13', 'ean8', 'upca', 'qr'], 'type': 'string', 'description': "Defaults to the call's symbology"}}, 'additionalProperties': False}, 'description': 'The rows to draw'}, 'format': {'enum': ['svg', 'png'], 'type': 'string', 'description': 'svg (default, free) or png (Pro)'}, 'height': {'type': 'integer', 'maximum': 1000, 'minimum': 10, 'description': 'Bar height in the same units (default 80)'}, 'out_dir': {'type': 'string', 'description': 'Ignored on this hosted endpoint: there are no directories, and every row comes back as its own download link'}, 'out_path': {'type': 'string', 'description': 'Name for the downloaded file, e.g. acme-code. SVG is returned inline when this is left out; a PNG always comes back as a download link valid for one hour'}, 'overwrite': {'type': 'boolean', 'description': 'Replace a file of the same name already produced in this request (default false)'}, 'symbology': {'enum': ['code128', 'ean13', 'ean8', 'upca', 'qr'], 'type': 'string', 'description': 'Default symbology for rows that do not name one (default code128)'}, 'module_width': {'type': 'integer', 'maximum': 20, 'minimum': 1, 'description': 'Width of the narrowest bar, in pixels or SVG units (default 2)'}, 'stop_on_error': {'type': 'boolean', 'description': 'Stop at the first bad row instead of drawing the rest and reporting it (default false)'}}, 'additionalProperties': False}
barcode_create
Barcode
Call this tool to draw a linear barcode (code128, ean13, ean8, upca) as SVG, or PNG to out_path. A short EAN or UPC gets its check digit computed; a wrong one is refused, never redrawn. qr_create makes QR codes.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['symbology', 'value'], 'properties': {'text': {'type': 'boolean', 'description': 'Print the digits under the bars (default true)'}, 'value': {'type': 'string', 'description': 'The data to encode. Digits only for EAN and UPC'}, 'format': {'enum': ['svg', 'png'], 'type': 'string', 'description': 'svg (default, free) or png (Pro)'}, 'height': {'type': 'integer', 'maximum': 1000, 'minimum': 10, 'description': 'Bar height in the same units (default 80)'}, 'out_path': {'type': 'string', 'description': 'Name for the downloaded file, e.g. acme-code. SVG is returned inline when this is left out; a PNG always comes back as a download link valid for one hour'}, 'overwrite': {'type': 'boolean', 'description': 'Replace a file of the same name already produced in this request (default false)'}, 'symbology': {'enum': ['code128', 'ean13', 'ean8', 'upca'], 'type': 'string', 'description': 'code128 for any printable ASCII, ean13 and ean8 for retail products, upca for North American retail'}, 'module_width': {'type': 'integer', 'maximum': 20, 'minimum': 1, 'description': 'Width of the narrowest bar, in pixels or SVG units (default 2)'}}, 'additionalProperties': False}
code_list
Codes generated
List the codes this server generated, newest first, with what each carried and where it went, plus how much of the free 20 a month is used. Filter by kind. It reads the register, not the files.
Read only
Idempotent
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'kind': {'type': 'string', 'description': 'Only rows of this kind: text, wifi, vcard, sepa, invoice, barcode or batch'}, 'limit': {'type': 'integer', 'maximum': 200, 'minimum': 1, 'description': 'How many rows to show, newest first (default 20)'}}, 'additionalProperties': False}
invoice_payment_qr
Payment QR for an invoice
Call this tool for a SEPA payment QR from just an amount and reference: IBAN and name are read from the shared business profile, never asked for; pass invoice_id instead to take the amount from an invoice.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'iban': {'type': 'string', 'description': 'Override the IBAN in the shared business profile'}, 'name': {'type': 'string', 'description': 'Override the beneficiary name in the shared business profile'}, 'size': {'type': 'integer', 'description': 'PNG width in pixels, 32 to 4000 (default 300). SVG scales without it'}, 'amount': {'type': 'number', 'description': 'Amount in EUR. Overrides the invoice total; required when there is no invoice to read'}, 'format': {'enum': ['svg', 'png'], 'type': 'string', 'description': 'svg (default, free) or png (Pro)'}, 'margin': {'type': 'integer', 'maximum': 20, 'minimum': 0, 'description': 'Quiet zone in modules, default 4, which is what the QR standard requires'}, 'out_path': {'type': 'string', 'description': 'Name for the downloaded file, e.g. acme-code. SVG is returned inline when this is left out; a PNG always comes back as a download link valid for one hour'}, 'overwrite': {'type': 'boolean', 'description': 'Replace a file of the same name already produced in this request (default false)'}, 'reference': {'type': 'string', 'description': 'Payment text, up to 140 characters. Defaults to the invoice number'}, 'invoice_id': {'type': 'string', 'description': "Invoice number, for example INV-2026-0007. Read from the invoice server's store if it is present"}, 'error_correction': {'enum': ['L', 'M', 'Q', 'H'], 'type': 'string', 'description': 'L 7%, M 15% (default), Q 25%, H 30% of the code recoverable when damaged'}}, 'additionalProperties': False}
license_activate
Activate license
Turn Pro on for this connection with key, an MCPL1.<payload>.<signature> issued at checkout for this server or the bundle. Data under your token stays; a wrong or expired key changes nothing. license_status confirms it.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['key'], 'properties': {'key': {'type': 'string', 'description': 'License key from checkout, MCPL1.<payload>.<signature>'}}, 'additionalProperties': False}
license_status
License status
Report this endpoint's licence state for your token as JSON: the product, the tier free or pro, why it is not Pro, and the checkout URL. Call it to explain a free-tier refusal. No arguments, nothing changes.
Read only
Idempotent
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
qr_create
QR code
Call this tool to turn text or a URL into a QR code: SVG inline, or a PNG at a pixel size to out_path (Pro). Returns version, module grid and payload size. Free: 20 codes a month on this server.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['text'], 'properties': {'size': {'type': 'integer', 'description': 'PNG width in pixels, 32 to 4000 (default 300). SVG scales without it'}, 'text': {'type': 'string', 'description': 'The text or URL the code carries'}, 'format': {'enum': ['svg', 'png'], 'type': 'string', 'description': 'svg (default, free) or png (Pro)'}, 'margin': {'type': 'integer', 'maximum': 20, 'minimum': 0, 'description': 'Quiet zone in modules, default 4, which is what the QR standard requires'}, 'out_path': {'type': 'string', 'description': 'Name for the downloaded file, e.g. acme-code. SVG is returned inline when this is left out; a PNG always comes back as a download link valid for one hour'}, 'overwrite': {'type': 'boolean', 'description': 'Replace a file of the same name already produced in this request (default false)'}, 'error_correction': {'enum': ['L', 'M', 'Q', 'H'], 'type': 'string', 'description': 'L 7%, M 15% (default), Q 25%, H 30% of the code recoverable when damaged'}}, 'additionalProperties': False}
qr_payment_sepa
SEPA payment QR code
Call this tool for an EPC069-12 payment QR a euro banking app can scan. Amount and reference are enough: the beneficiary IBAN and name default to the shared business profile, never asked for.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'bic': {'type': 'string', 'description': 'Beneficiary BIC. Optional under EPC version 002'}, 'iban': {'type': 'string', 'description': "Beneficiary IBAN. Defaults to the iban in the shared business profile (set once with the invoice server's business_set). Checked with ISO 7064 mod 97 and refused if it does not validate"}, 'name': {'type': 'string', 'description': 'Beneficiary name, up to 70 characters. Defaults to the name in the shared business profile'}, 'size': {'type': 'integer', 'description': 'PNG width in pixels, 32 to 4000 (default 300). SVG scales without it'}, 'amount': {'type': 'number', 'description': 'Amount in EUR, 0.01 to 999999999.99. Leave out and the payer types it'}, 'format': {'enum': ['svg', 'png'], 'type': 'string', 'description': 'svg (default, free) or png (Pro)'}, 'margin': {'type': 'integer', 'maximum': 20, 'minimum': 0, 'description': 'Quiet zone in modules, default 4, which is what the QR standard requires'}, 'purpose': {'type': 'string', 'description': 'Four-letter ISO 20022 purpose code, for example GDDS'}, 'currency': {'type': 'string', 'description': 'EUR only; any other value is refused, because EPC encodes a SEPA credit transfer'}, 'out_path': {'type': 'string', 'description': 'Name for the downloaded file, e.g. acme-code. SVG is returned inline when this is left out; a PNG always comes back as a download link valid for one hour'}, 'overwrite': {'type': 'boolean', 'description': 'Replace a file of the same name already produced in this request (default false)'}, 'reference': {'type': 'string', 'description': 'Structured creditor reference (RF...), up to 35. Use this OR remittance, never both'}, 'remittance': {'type': 'string', 'description': 'Free payment text, up to 140 characters, for example an invoice number'}, 'error_correction': {'enum': ['L', 'M', 'Q', 'H'], 'type': 'string', 'description': 'L 7%, M 15% (default), Q 25%, H 30% of the code recoverable when damaged'}}, 'additionalProperties': False}
qr_vcard
Contact QR code
Call this tool to make a QR code that adds a contact when scanned (vCard 3.0). For your own card pass nothing: name, phone, email and address default to the shared business profile, never asked for.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'org': {'type': 'string', 'description': 'Company or organisation'}, 'url': {'type': 'string', 'description': 'Website'}, 'name': {'type': 'string', 'description': "Full name, for example Anna Kowalska. Defaults to the shared business profile's name; pass it only for someone else's card"}, 'note': {'type': 'string', 'description': 'Free note stored on the contact'}, 'size': {'type': 'integer', 'description': 'PNG width in pixels, 32 to 4000 (default 300). SVG scales without it'}, 'email': {'type': 'string', 'description': 'Email address. Defaults to the shared business profile'}, 'phone': {'type': 'string', 'description': 'Phone number, in the form it should be dialled. Defaults to the shared business profile'}, 'title': {'type': 'string', 'description': 'Job title'}, 'format': {'enum': ['svg', 'png'], 'type': 'string', 'description': 'svg (default, free) or png (Pro)'}, 'margin': {'type': 'integer', 'maximum': 20, 'minimum': 0, 'description': 'Quiet zone in modules, default 4, which is what the QR standard requires'}, 'address': {'type': 'string', 'description': 'Postal address, one line. Defaults to the shared business profile'}, 'out_path': {'type': 'string', 'description': 'Name for the downloaded file, e.g. acme-code. SVG is returned inline when this is left out; a PNG always comes back as a download link valid for one hour'}, 'overwrite': {'type': 'boolean', 'description': 'Replace a file of the same name already produced in this request (default false)'}, 'error_correction': {'enum': ['L', 'M', 'Q', 'H'], 'type': 'string', 'description': 'L 7%, M 15% (default), Q 25%, H 30% of the code recoverable when damaged'}}, 'additionalProperties': False}
qr_wifi
WiFi QR code
Call this tool to make a QR code that joins a WiFi network when scanned: ssid, password and auth type, written to out_path or returned as SVG. Free: 20 codes a month. qr_create takes plain text or a URL.
Input schema
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['ssid'], 'properties': {'auth': {'enum': ['WPA', 'WEP', 'nopass'], 'type': 'string', 'description': 'WPA (default when a password is given), WEP, or nopass for an open network'}, 'size': {'type': 'integer', 'description': 'PNG width in pixels, 32 to 4000 (default 300). SVG scales without it'}, 'ssid': {'type': 'string', 'description': 'Network name, exactly as it appears'}, 'format': {'enum': ['svg', 'png'], 'type': 'string', 'description': 'svg (default, free) or png (Pro)'}, 'hidden': {'type': 'boolean', 'description': 'True if the network does not broadcast its name'}, 'margin': {'type': 'integer', 'maximum': 20, 'minimum': 0, 'description': 'Quiet zone in modules, default 4, which is what the QR standard requires'}, 'out_path': {'type': 'string', 'description': 'Name for the downloaded file, e.g. acme-code. SVG is returned inline when this is left out; a PNG always comes back as a download link valid for one hour'}, 'password': {'type': 'string', 'description': 'Passphrase. Leave out only for an open network'}, 'overwrite': {'type': 'boolean', 'description': 'Replace a file of the same name already produced in this request (default false)'}, 'error_correction': {'enum': ['L', 'M', 'Q', 'H'], 'type': 'string', 'description': 'L 7%, M 15% (default), Q 25%, H 30% of the code recoverable when damaged'}}, 'additionalProperties': False}
History
Recent tool changes
Added
code_list
Sept. 24, 2026, 2:40 a.m.
Added
barcode_batch
Sept. 24, 2026, 2:40 a.m.
Added
barcode_create
Sept. 24, 2026, 2:40 a.m.
Added
invoice_payment_qr
Sept. 24, 2026, 2:40 a.m.
Added
qr_payment_sepa
Sept. 24, 2026, 2:40 a.m.
Added
qr_vcard
Sept. 24, 2026, 2:40 a.m.
Added
qr_wifi
Sept. 24, 2026, 2:40 a.m.
Added
qr_create
Sept. 24, 2026, 2:40 a.m.
Added
license_activate
Sept. 24, 2026, 2:40 a.m.
Added
license_status
Sept. 24, 2026, 2:40 a.m.
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