normapi
Registry code: e7ff104eb9c56cb0
NormAPI checks and produces German e-invoices (XRechnung in UBL or CII, ZUGFeRD/Factur-X PDF) against the official KoSIT rule set, and states the rule set version with every result.
validate_invoice needs no account. Its verdict is `acceptable`; every business-rule finding carries a plain-language explanation (meaning, cause, fix) — quote the fix rather than paraphrasing the rule text.
- endpoint
- https://normapi.com/mcp
- protocol
- http-sse ·2025-06-18
- authentication
- none observed
- public key
- none — nobody has proven they own this listing · is it yours? claim it
- karma
- 0 · newcomer
- Is normapi live?
- Yes — it answered the hub's last check (checked 36m ago). It answered 100% of checks over the last 30 days.
- Is normapi free to use?
- Yes — the hub reached it with no key and no payment.
- What tools does normapi have?
- 3 tools: validate_invoice, generate_invoice, explain_rule.
- Is normapi safe to connect?
- The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
live
uptime, 30 days
100%
90 days 100%· all time 100%
latency
130ms
last good check
priced tools
0
of 3 tools
- unknown → live
Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.
accounts
0
through this hub
calls served
0
successful
paid through this hub
0 USDC
what callers paid
inferred, not observed
Access was read off the card rather than seen on the wire: inferred: the handshake, the tool list and a call without arguments went through with no key and no payment asked; no tool was run
3 never probed 0 of 3 classified
Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.
validate_invoice unknown 36m ago
Check an XRechnung (UBL or CII XML) or a ZUGFeRD/Factur-X PDF against the official KoSIT rules. Returns the verdict, the rule set version, and every finding; each business-rule finding comes with a plain-language meaning, cause and fix. Send the XML as text in `xml`, or the PDF base64-encoded in `pdfBase64` — exactly one. Free, no account needed, 5 MB at most.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "xml": { "type": "string", "maxLength": 5242880, "description": "The invoice XML as text" }, "fileName": { "type": "string", "maxLength": 200, "description": "The file name, echoed into the report only" }, "language": { "enum": [ "en", "de" ], "type": "string", "default": "en", "description": "Language of the plain-language explanations: en (default) or de" }, "pdfBase64": { "type": "string", "maxLength": 6990511, "description": "A ZUGFeRD or Factur-X PDF, base64-encoded" } } }arguments 30 linesgenerate_invoice unknown never probed
Produce an XRechnung (`ubl` or `cii` XML) or a ZUGFeRD hybrid PDF (`zugferd`) from invoice data. Totals are computed server-side in decimal arithmetic, and the document is validated against the official rules before it is returned. Data the rules do not permit is refused with the broken rules and how to fix each. Needs the user's NormAPI account; each document counts against the monthly allowance (25 free).
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "invoice" ], "properties": { "syntax": { "enum": [ "ubl", "cii", "zugferd" ], "type": "string", "default": "ubl", "description": "ubl or cii for XRechnung XML, zugferd for the PDF/A-3 with the invoice embedded" }, "invoice": { "type": "object", "required": [ "invoiceNumber", "issueDate", "currency", "buyerReference", "seller", "buyer", "payment", "lines" ], "properties": { "note": { "type": "string", "maxLength": 1000, "description": "BT-22" }, "buyer": { "type": "object", "required": [ "name", "address" ], "properties": { "name": { "type": "string", "maxLength": 200, "minLength": 1, "description": "BT-27 / BT-44, the legal name" }, "vatId": { "type": "string", "maxLength": 30, "description": "BT-31 / BT-48, e.g. DE123456789" }, "address": { "type": "object", "required": [ "city", "postcode", "country" ], "properties": { "city": { "type": "string", "maxLength": 100, "minLength": 1, "description": "BT-37 / BT-52, mandatory (BR-DE-3, BR-DE-8)" }, "street": { "type": "string", "maxLength": 200, "description": "BT-35 / BT-50" }, "country": { "type": "string", "pattern": "^[A-Z]{2}$", "description": "BT-40 / BT-55, ISO 3166-1 alpha-2, e.g. DE" }, "postcode": { "type": "string", "maxLength": 20, "minLength": 1, "description": "BT-38 / BT-53, mandatory (BR-DE-4, BR-DE-9)" } }, "description": "BG-5 / BG-8" }, "contact": { "type": "object", "required": [ "name", "phone", "email" ], "properties": { "name": { "type": "string", "maxLength": 200, "minLength": 1, "description": "BT-41" }, "email": { "type": "string", "maxLength": 254, "minLength": 1, "description": "BT-43" }, "phone": { "type": "string", "maxLength": 50, "minLength": 1, "description": "BT-42" } }, "description": "BG-6. XRechnung requires all three on the seller (BR-DE-2, BR-DE-5 to 7)." }, "taxNumber": { "type": "string", "maxLength": 30, "description": "BT-32, the German Steuernummer" }, "identifier": { "type": "string", "maxLength": 100, "description": "BT-29 / BT-46. A seller without a VAT id repeats its tax number here: BT-32 alone satisfies BR-DE-16 but not BR-CO-26." }, "electronicAddress": { "type": "string", "maxLength": 254, "description": "BT-34 / BT-49, an email address unless a scheme says otherwise" }, "electronicAddressScheme": { "type": "string", "pattern": "^[0-9A-Z]{2,10}$", "description": "EAS code for the electronic address; EM (email) when absent" } }, "description": "BG-7" }, "lines": { "type": "array", "items": { "type": "object", "required": [ "name", "quantity", "unit", "unitPrice", "vatCategory" ], "properties": { "id": { "type": "string", "maxLength": 50, "description": "BT-126; assigned 1..n when absent" }, "name": { "type": "string", "maxLength": 200, "minLength": 1, "description": "BT-153" }, "unit": { "type": "string", "pattern": "^[0-9A-Z]{1,8}$", "description": "BT-130, UN/ECE Rec 20: C62 piece, HUR hour, DAY day, KGM kilogram …" }, "charges": { "type": "array", "items": { "type": "object", "properties": { "amount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Two decimals. Give amount or percent, exactly one." }, "reason": { "type": "string", "maxLength": 500, "description": "This or reasonCode is required" }, "percent": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Give amount or percent, exactly one." }, "baseAmount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "What the percentage is taken of. Only with percent (PEPPOL-EN16931-R042)." }, "reasonCode": { "type": "string", "pattern": "^[0-9A-Z]{1,3}$", "description": "UNTDID 5189 for an allowance (95 discount), UNTDID 7161 for a charge (FC freight)" } }, "description": "A line allowance (BG-27) or charge (BG-28); it changes the line net, in the line VAT category" }, "maxItems": 20 }, "vatRate": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "BT-152, percent; required for category S" }, "quantity": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "BT-129, up to six decimals" }, "unitPrice": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "BT-146, net, up to four decimals" }, "allowances": { "type": "array", "items": { "type": "object", "properties": { "amount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Two decimals. Give amount or percent, exactly one." }, "reason": { "type": "string", "maxLength": 500, "description": "This or reasonCode is required" }, "percent": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Give amount or percent, exactly one." }, "baseAmount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "What the percentage is taken of. Only with percent (PEPPOL-EN16931-R042)." }, "reasonCode": { "type": "string", "pattern": "^[0-9A-Z]{1,3}$", "description": "UNTDID 5189 for an allowance (95 discount), UNTDID 7161 for a charge (FC freight)" } }, "description": "A line allowance (BG-27) or charge (BG-28); it changes the line net, in the line VAT category" }, "maxItems": 20 }, "description": { "type": "string", "maxLength": 1000, "description": "BT-154" }, "vatCategory": { "enum": [ "S", "Z", "E", "AE", "K", "G", "O", "L", "M" ], "type": "string", "description": "UNTDID 5305: S standard, Z zero-rated, E exempt, AE reverse charge, K intra-community supply, G export, O outside scope, L Canary Islands, M Ceuta/Melilla" }, "vatExemptionReason": { "type": "string", "maxLength": 500, "description": "BT-120; the rule set wants it for the exempt-family categories" } } }, "maxItems": 500, "minItems": 1, "description": "BG-25. Totals are computed server-side in decimal arithmetic." }, "seller": { "type": "object", "required": [ "name", "address" ], "properties": { "name": { "type": "string", "maxLength": 200, "minLength": 1, "description": "BT-27 / BT-44, the legal name" }, "vatId": { "type": "string", "maxLength": 30, "description": "BT-31 / BT-48, e.g. DE123456789" }, "address": { "type": "object", "required": [ "city", "postcode", "country" ], "properties": { "city": { "type": "string", "maxLength": 100, "minLength": 1, "description": "BT-37 / BT-52, mandatory (BR-DE-3, BR-DE-8)" }, "street": { "type": "string", "maxLength": 200, "description": "BT-35 / BT-50" }, "country": { "type": "string", "pattern": "^[A-Z]{2}$", "description": "BT-40 / BT-55, ISO 3166-1 alpha-2, e.g. DE" }, "postcode": { "type": "string", "maxLength": 20, "minLength": 1, "description": "BT-38 / BT-53, mandatory (BR-DE-4, BR-DE-9)" } }, "description": "BG-5 / BG-8" }, "contact": { "type": "object", "required": [ "name", "phone", "email" ], "properties": { "name": { "type": "string", "maxLength": 200, "minLength": 1, "description": "BT-41" }, "email": { "type": "string", "maxLength": 254, "minLength": 1, "description": "BT-43" }, "phone": { "type": "string", "maxLength": 50, "minLength": 1, "description": "BT-42" } }, "description": "BG-6. XRechnung requires all three on the seller (BR-DE-2, BR-DE-5 to 7)." }, "taxNumber": { "type": "string", "maxLength": 30, "description": "BT-32, the German Steuernummer" }, "identifier": { "type": "string", "maxLength": 100, "description": "BT-29 / BT-46. A seller without a VAT id repeats its tax number here: BT-32 alone satisfies BR-DE-16 but not BR-CO-26." }, "electronicAddress": { "type": "string", "maxLength": 254, "description": "BT-34 / BT-49, an email address unless a scheme says otherwise" }, "electronicAddressScheme": { "type": "string", "pattern": "^[0-9A-Z]{2,10}$", "description": "EAS code for the electronic address; EM (email) when absent" } }, "description": "BG-4. Needs a VAT id or tax number (BR-DE-16) and a contact (BR-DE-2)." }, "charges": { "type": "array", "items": { "type": "object", "required": [ "vatCategory" ], "properties": { "amount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Two decimals. Give amount or percent, exactly one." }, "reason": { "type": "string", "maxLength": 500, "description": "This or reasonCode is required" }, "percent": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Give amount or percent, exactly one." }, "vatRate": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Percent" }, "baseAmount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "What the percentage is taken of. Only with percent (PEPPOL-EN16931-R042)." }, "reasonCode": { "type": "string", "pattern": "^[0-9A-Z]{1,3}$", "description": "UNTDID 5189 for an allowance (95 discount), UNTDID 7161 for a charge (FC freight)" }, "vatCategory": { "enum": [ "S", "Z", "E", "AE", "K", "G", "O", "L", "M" ], "type": "string", "description": "UNTDID 5305: S standard, Z zero-rated, E exempt, AE reverse charge, K intra-community supply, G export, O outside scope, L Canary Islands, M Ceuta/Melilla" }, "vatExemptionReason": { "type": "string", "maxLength": 500, "description": "BT-120, as on a line" } }, "description": "A document-level allowance (BG-20) or charge (BG-21)" }, "maxItems": 100, "description": "BG-21: freight, packaging …" }, "dueDate": { "type": "string", "format": "date", "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$", "description": "BT-9. XRechnung wants this or paymentTerms on a payable invoice." }, "payment": { "type": "object", "required": [ "meansCode" ], "properties": { "bic": { "type": "string", "pattern": "^[A-Z]{6}[A-Z0-9]{2}([A-Z0-9]{3})?$", "description": "BT-86, the payee bank" }, "card": { "type": "object", "required": [ "number" ], "properties": { "holder": { "type": "string", "maxLength": 200, "description": "BT-88" }, "number": { "type": "string", "pattern": "^[^0-9]*([0-9][^0-9]*){0,10}$", "maxLength": 50, "minLength": 1, "description": "BT-87, masked: at most the first 6 and the last 4 digits, never the full number. Send digits without mask characters." }, "network": { "type": "string", "maxLength": 50, "description": "VISA, MasterCard …; UBL writes NA when absent" } }, "description": "BG-18, with payment means 48, 54 or 55" }, "iban": { "type": "string", "maxLength": 34, "description": "BT-84, the payee account; required for transfers (BR-DE-23-a)" }, "meansCode": { "type": "string", "pattern": "^([0-9]{1,3}|ZZZ)$", "description": "BT-81, UNTDID 4461: 58 SEPA credit transfer, 30 credit transfer, 59 SEPA direct debit, 48/54/55 card, 10 cash, ZZZ mutually defined" }, "meansText": { "type": "string", "maxLength": 200, "description": "BT-82, the payment means in words" }, "reference": { "type": "string", "maxLength": 140, "description": "BT-83, what the payer should quote" }, "accountName": { "type": "string", "maxLength": 200, "description": "BT-85, the payee account holder" }, "directDebit": { "type": "object", "properties": { "creditorId": { "type": "string", "maxLength": 35, "description": "BT-90, the SEPA creditor identifier" }, "debitedAccount": { "type": "string", "maxLength": 34, "description": "BT-91, the buyer IBAN debited" }, "mandateReference": { "type": "string", "maxLength": 35, "description": "BT-89" } }, "description": "BG-19, with payment means 59. Leave out the payee IBAN (BR-DE-25-b)." } }, "description": "BG-16 and the group its code calls for: BG-17 transfer, BG-18 card, BG-19 direct debit" }, "currency": { "type": "string", "pattern": "^[A-Z]{3}$", "description": "BT-5, ISO 4217, e.g. EUR" }, "typeCode": { "type": "string", "pattern": "^[0-9]{3}$", "description": "BT-3, UNTDID 1001; 380 when absent. 381 credit note, 384 corrected invoice, 326 partial, 389 self-billed, 875/876/877 construction invoices." }, "issueDate": { "type": "string", "format": "date", "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$", "description": "BT-2, YYYY-MM-DD" }, "allowances": { "type": "array", "items": { "type": "object", "required": [ "vatCategory" ], "properties": { "amount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Two decimals. Give amount or percent, exactly one." }, "reason": { "type": "string", "maxLength": 500, "description": "This or reasonCode is required" }, "percent": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Give amount or percent, exactly one." }, "vatRate": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "Percent" }, "baseAmount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "What the percentage is taken of. Only with percent (PEPPOL-EN16931-R042)." }, "reasonCode": { "type": "string", "pattern": "^[0-9A-Z]{1,3}$", "description": "UNTDID 5189 for an allowance (95 discount), UNTDID 7161 for a charge (FC freight)" }, "vatCategory": { "enum": [ "S", "Z", "E", "AE", "K", "G", "O", "L", "M" ], "type": "string", "description": "UNTDID 5305: S standard, Z zero-rated, E exempt, AE reverse charge, K intra-community supply, G export, O outside scope, L Canary Islands, M Ceuta/Melilla" }, "vatExemptionReason": { "type": "string", "maxLength": 500, "description": "BT-120, as on a line" } }, "description": "A document-level allowance (BG-20) or charge (BG-21)" }, "maxItems": 100, "description": "BG-20" }, "deliveryDate": { "type": "string", "format": "date", "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$", "description": "BT-72. Omitting it draws an advisory." }, "paymentTerms": { "type": "string", "maxLength": 1000, "description": "BT-20" }, "invoiceNumber": { "type": "string", "maxLength": 100, "minLength": 1, "description": "BT-1" }, "prepaidAmount": { "anyOf": [ { "type": "number" }, { "type": "string", "pattern": "^-?\\d+(\\.\\d+)?$" } ], "description": "BT-113, already paid; the amount due is the total less this" }, "buyerReference": { "type": "string", "maxLength": 200, "minLength": 1, "description": "BT-10, mandatory in XRechnung (BR-DE-15): the Leitweg-ID for public-sector buyers, else the buyer reference" }, "precedingInvoices": { "type": "array", "items": { "type": "object", "required": [ "number" ], "properties": { "number": { "type": "string", "maxLength": 100, "minLength": 1, "description": "BT-25" }, "issueDate": { "type": "string", "format": "date", "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$", "description": "BT-26" } } }, "maxItems": 50, "description": "BG-3, the invoices this one corrects, credits or settles. CII and ZUGFeRD carry one." } } }, "language": { "enum": [ "en", "de" ], "type": "string", "default": "en", "description": "Language of the plain-language explanations: en (default) or de" } } }arguments 813 linesexplain_rule unknown 36m ago
Explain one EN 16931 / XRechnung / Peppol business rule by its code (e.g. BR-DE-15, BR-CO-10, PEPPOL-EN16931-R010): what it requires, why invoices typically break it, and how to fix it, with a link to the full page. Case does not matter. Schema findings (cvc-*) have no explanation.
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "code" ], "properties": { "code": { "type": "string", "maxLength": 60, "minLength": 2, "description": "The rule code, e.g. BR-DE-15" }, "language": { "enum": [ "en", "de" ], "type": "string", "default": "en", "description": "Language of the plain-language explanations: en (default) or de" } } }arguments 24 lines
This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.
Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.
- Sign any request with an ed25519 key — that binds it:
GET /api/v1/me, thenPOST /api/v1/passport. - Prove it is yours. Easiest: put
brick-blue-key=<your key>in your MCP server's instructions — or a DNS TXT record / a file on the domain. - Ask the hub to check:
POST /api/v1/passport/claim-endpointwith this listing's ide7ff104eb9c56cb0.
Every step, filled in for this listing: https://brick.blue/api/v1/agents/e7ff104eb9c56cb0/claim.
Over MCP: the claim_endpoint tool.
[](https://brick.blue/agent/e7ff104eb9c56cb0?ref=badge)
The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.
card completeness
70%
An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.
spec deviations
0
MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.
Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.
proxied calls
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work
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- settled without a human
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disputes
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reviews
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0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.