Get your douane.gouv.fr declarations through an API

What you can build on douane.gouv.fr

• Get your declarations and their état

  Build this

  Runs Rechercher > déclarations (search > declarations) in DELTA IE with the advanced criteria: état, declaration type, dates and bureau (customs office).

  Takes

  Date range, état (optional), declaration type (optional), bureau (optional)

  Returns

  CRN, MRN, LRN, declaration type, état, bureau de déclaration, date

• Read a declaration's liquidation

  Build this

  Opens one declaration in the DELTA IE consultation screen and reads its cycle and the Liquidation récapitulative totale tab (total duties and taxes).

  Takes

  CRN or MRN

  Returns

  CRN, MRN, LRN, état, cycle steps with dates, each duty or tax with its amount, total in EUR

• List the déclarations complémentaires due

  Build this

  Reads the DELTA IE home page: the Compteurs (counters) and the table Vos déclarations complémentaires (DC) attendues, with each DC deadline.

  Takes

  Nothing

  Returns

  Counter values (en attente EDOP, expiration proche, anticipé Brexit, attente Crédit, contingent critique), simplified declaration reference, période de dépôt de DC

• Request the invalidation of a declaration

  Build this

  Files a demande d'invalidation (invalidation request) on one declaration in DELTA IE with the motif, your reference and a comment, and returns the customs reference.

  Takes

  CRN, motif, référence opérateur, comment (optional), supporting document type and number (optional)

  Returns

  Référence douane de la demande, CRN

Automate douane.gouv.fr with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• Declarations still sous contrôle or crédit en attente

  Build this

  Starts

  Every weekday at 8:00, Europe/Paris

  Step 1

  Get the declarations lodged since yesterday morning with their état.

  Step 2

  Keep the ones in état sous contrôle or crédit en attente.

  Step 3

  Email you the list with CRN, LRN, bureau and état.

• Déclarations complémentaires close to their deadline

  Build this

  Starts

  Every weekday at 7:00, Europe/Paris

  Step 1

  Read the DELTA IE counters and the table of awaited déclarations complémentaires.

  Step 2

  Keep the DC whose période de dépôt ends within 2 days, and stop if there are none.

  Step 3

  Post each one to your webhook with the simplified declaration's reference, its deadline and the contingent critique counter.

• Liquidation of released declarations, to accounting

  Build this

  Starts

  Every weekday at 18:00, Europe/Paris

  Step 1

  Get today's declarations in état BAE (bon à enlever, release) or libéré.

  Step 2

  Keep the ones that were not in that état on the last run.

  Step 3

  For each, read the Liquidation récapitulative totale.

  Step 4

  Post CRN, LRN, each duty or tax and the total to your accounting webhook.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get your declarations and their état” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "douane.gouv.fr/get_delta_ie_declarations",
    "input": {
      "from": "2026-11-11",
      "to": "2026-11-12",
      "etat": "sous contrôle"
    }
  }'

{
  "status": "completed",
  "data": {
    "declarations": [
      {
        "crn": "26FRA0000478213",
        "mrn": "26FR0000418372K4P1",
        "lrn": "ACME2611110042",
        "declaration_type": "IM",
        "etat": "sous contrôle",
        "bureau_de_declaration": "FR009991",
        "date": "2026-11-11T16:42:00+01:00"
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

Douane.gouv.fr’s own options

French customs offers an API only as EDI for declarants, under contract. DELTA IE, DELTA H7, Gamma2 and ANTES take JSON messages over an API after a contrat d'utilisation and an API account per téléservice. DELTA G and DELTA X go through certified EDI software. Without that, you use DELTA IE on douane.gouv.fr by hand.

Read on November 12, 2026: Échange de données informatisé, EDI API, Échange de données informatisé, EDI MAREVA, Manuel DELTA IE pour les déclarants DTI.

Signing in to douane.gouv.fr

DELTA IE needs a douane.gouv.fr account. Customs is turning on two-step sign-in for every account: a 6-digit code sent to the account's email address at each sign-in. With Fous you sign in once through douane.gouv.fr's own sign-in with your own account: the login is sealed with AES-256, the emailed code is handled, and an expired session is signed back in.

Worth knowing

Everything starts from your DECO relation

A DELTA IE declaration starts with Identification, a list of the relations DECO attached to your account. Choosing one fills the bureau de déclaration, and nothing else can be filled before it.

Déclarations complémentaires run on a clock

A simplified declaration waits for its DC within the period set by your authorisation. Expiration proche counts it 2 days before the deadline, and contingent critique means filing the DC the same day or the next.

Anticipated declarations expire

An anticipated declaration shows in expiration proche 6 days before its deadline, and the system deletes it once the délai d'anticipation is over. Annulation and modification requests exist only for anticipated declarations.

LRN: your own number, 22 characters

The LRN is a unique reference you choose: letters and digits only, at most 22 characters. A draft saves itself to your account once the LRN and EORI are filled in.

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