POST

What

/v1/einvoice-who

Who must receive e-invoices since 1 Sep 2026 vs emit (GE/ETI 2026, PME/micro 2027)

/v1/late-penalties

L441-10 C. com. interest (BCE MRO +10 pts, H2-2026 default 2.40%) + 40 € (D.441-5)

/v1/due-date

Invoice date + net days; next open day skipping L.3133-1 holidays 2026–2027

/v1/holidays

Metropolitan public holidays (11 in 2026, Easter Monday 6 Apr)

/v1/payment-term-max

Agreed-term ceiling: 60 days after invoice, or 45 days EOM if stipulated (L441-10 I)

/v1/tva-rate

Indicative VAT 20 / 10 / 5.5 / 2.1

/v1/mention-fields

Checklist of L441-9 / 293 B / L441-10 mention field ids

/v1/vat-key

FR intra-community VAT id from SIREN (CGI 286 ter formula, not VIES)

/v1/penalty-text

Collable L441-10 + D.441-5 mention strings (12,40 % + 40 €)

/v1/franchise-293b

2026 293 B thresholds (37 500 / 85 000 €) + statutory mention

/v1/dunning-steps

Relance calendar J+1 / J+8 / J+15 after due date (usage; L441-10 sans rappel)

/v1/open-days

Inclusive open-day count between two dates (skip weekend + L.3133-1)

/v1/invoice-numbering

L441-9 chronological sequence: next number + no-gap rules

/v1/amount-words

French amount in words (12,40 → douze euros et quarante centimes)

/v1/alsace-holidays

Alsace-Moselle extras (Good Friday + St Stephen) + combined calendar

/v1/due-date-eom

45 jours fin de mois (L441-10 I): month-end+45 and +45-then-EOM

/v1/ht-ttc

HT ↔ TTC at CGI rates 20 / 10 / 5.5 / 2.1 / 0

/v1/days-late

Calendar days from due_date to as_of (input for late-penalties)

/v1/siren-from-siret

SIRET → SIREN + NIC + checksums + VAT key (no INSEE)

/v1/quote-validity

Devis validity calendar (default 30 days, usage not L441-9)

/v1/ape-naf

APE/NAF rev.2 format (4 digits + letter, e.g. 62.01Z). No INSEE

/v1/postcode-fr

5-digit postcode → department (2A/2B, 97x, Alsace-Moselle flag)

/v1/legal-form

Extra invoice mentions by form (EI/micro vs SAS/SARL capital+RCS)

/v1/iban-fr

FR IBAN 27 chars: bank / branch / account / RIB key + ISO checksum

/v1/credit-note

Avoir: next AV- number + CGI 289 mention of original invoice (L441-9, no reuse)

/v1/phone-fr

FR phone format (ARCEP): 10 digits / +33 → E.164 + invoice mention. No lookup

/v1/capital-social

Share-capital mention (SAS au capital de 1 000,00 €). EI/micro: none

/v1/rcs-mention

RCS + greffe city + SIREN (RCS Pau 404 833 048). Format, not a Kbis

/v1/invoice-currency

EUR legal tender; foreign ccy OK, VAT in euros. No FX

/v1/escompte

L441-10 early-payment discount mention, or « Pas d'escompte… »

/v1/acompte

Down-payment invoice: AC- number, 30% default, remaining TTC (CGI 289)

/v1/date-fr

Invoice date JJ/MM/AAAA + weekday (L441-9 emission date format)

/v1/payment-means

Means of payment mention (virement / chèque / CB / …) L441-9

/v1/interest-start

L441-10: interest starts the calendar day after the due date

/v1/siege-social

Siège social mention: street + CP + city (L441-9, not a Kbis)

/v1/net-a-payer

Invoice footer HT/TVA/TTC + « Net à payer : 1 200,00 € »

/v1/doc-title

CGI 289 title: Facture / Avoir / acompte / note d'honoraires / Devis

/v1/autoliquidation

Reverse-charge VAT mention (CGI 283 / BTP 283-2 nonies / import)

/v1/eori

FR EORI = FR + SIREN (format only, no customs lookup)

/v1/duplicata

Copy of an invoice: same number, stamped DUPLICATA (not a new invoice)

/v1/rm-mention

Artisan RM + city + SIREN (RM Pau 404 833 048). Format, not a D1

/v1/buyer

L441-9 client identification: name + optional SIRET/SIREN + city

/v1/unit

Line unit of measure (heure / jour / forfait / …) + optional qty

/v1/cgv

L441-6 CGV mention (« Nos conditions générales de vente s'appliquent. »)

/v1/reserve-propriete

Retention-of-title clause (L.624-16) until full payment. Goods only

/v1/garantie-legale

Consumer legal warranty 2 years from delivery (C. conso L.217-3)

/v1/mediateur

Consumer mediator mention (C. conso L.612-1). B2C only

/v1/delivery

Date of supply vs invoice date (CGI 289 / 242 nonies A)

/v1/line

L441-9 invoice line: designation + qty/unit + unit price HT

/v1/page

Multi-page invoice footer: Page X/Y

/v1/retractation

14-day consumer withdrawal (L.221-18). B2C distance/off-premises

/v1/conservation

Keep the invoice 10 years (L123-22) / 6 years tax (LPF L102 B)

/v1/prescription

Payment action: 5 years B2B (L110-4) or 2 years B2C (L.218-2)

/v1/garantie-commerciale

Commercial warranty (L.217-21), distinct from the 2-year legal one

/v1/export

VAT exemption: CGI 262 extra-EU or 262 ter I intra-EU

/v1/proforma

Pro forma header — not an invoice (CGI 289)

/v1/jours-francs

Jours francs (CPC 642): start day out, weekend/holiday rolls

/v1/clause-penale

Contractual penalty clause (C. civ. 1231-5), not L441-10

/v1/periode

Billing period from/to for continuous services (CGI 289)

/v1/autofacturation

Self-billing stamp (CGI 289), optional seller name

/v1/rgpd

Invoice data footer: RGPD 6.1.b/c + 10-year keep

/v1/langue

French language mention (Toubon B2C / tax-control B2B)

/v1/commande

Purchase-order number (+ optional date) on the invoice

/v1/debours

Disbursements out of the VAT base (CGI 267)

/v1/arrhes

Arrhes (C. civ. 1590), distinct from acompte — seller returns double

/v1/prorata

Calendar prorata of a monthly HT over from/to

/v1/check-siret

SIRET/SIREN checksum only

/v1/check-iban

IBAN ISO 13616 checksum only

POST /mcp

MCP JSON-RPC: tools/list free, tools/call $0.01