openapi: 3.2.0
info:
  title: Sirenic Acheteur API
  version: 1.0.0
  description: 'French & European company data, pay-per-call in USDC or EURC — EURC at numeric parity: the same figure as the USDC price, not FX-converted (at the ECB rate of 4 Sept 2026, about 16 % more in dollar terms) via the x402 protocol — or with an API key and prepaid credits (1 credit = 1 EUR, same per-call prices, no wallet).'
  contact:
    email: contact@sirenic.eu
  license:
    name: 'Data: Licence Ouverte / Open License Etalab 2.0'
    url: https://www.etalab.gouv.fr/licence-ouverte-open-licence/
servers:
- url: https://api.sirenic.eu
security:
- {}
- ApiKeyAuth: []
- BearerAuth: []
tags:
- name: Acheteur
paths:
  /v1/acheteur/{siret}/profil:
    get:
      summary: Procurement profile of a French public buyer
      x-price: $0.02
      x-payment:
        protocol: x402
        network: eip155:8453
      parameters:
      - name: siret
        in: path
        required: true
        schema:
          type: string
          pattern: ^\d{14}$
        example: '26310012500016'
        description: 14-digit SIRET of the buyer (Luhn-checked)
      responses:
        '200':
          description: Contract counts and amounts, activity by year (5y), top CPV segments, incumbent suppliers with contracts expiring within 18 months, framework-agreement share, average bids received per tender and median data-publication delay.
          content:
            application/json:
              example:
                acheteur:
                  siret: '26310012500016'
                  siren: '263100125'
                  nom: CENTRE HOSPITALIER UNIVERSITAIRE DE TOULOUSE
                nombre_marches: 5723
                montant_total: 11823128968.9
                montant_moyen: 2065897
                marches_en_cours: 4830
                echeances_12_mois: 1167
                prochaine_echeance: '2026-09-05'
                habitudes:
                  part_accords_cadres_pct: 78.4
                  offres_recues_moyenne: 3.5
                  delai_publication_median_jours: 11
                  part_montants_enveloppe_pct: 79.8
                  modalites_connues: 5723
                  part_sous_traitance_declaree_pct: 77.6
                  sous_traitance_connue: 5723
                  part_avances_pct: 57.4
                  avance_connue: 5723
                  ccag_dominant: Fournitures courantes et services
                  types_prix_dominant: Définitif révisable
                  plateforme_publication_dominante: DGFIP – PES MARCHÉ
                top_cpv:
                - cpv4: '3300'
                  nombre: 3002
                titulaires_principaux:
                - siren: '433944485'
                  nom: ARROW GENERIQUES
                  nombre_marches: 164
                  marches_expirant_18_mois: 67
        '400':
          $ref: '#/components/responses/Reponse400InvalidInput'
        '402':
          $ref: '#/components/responses/Reponse402PaymentRequired'
        '404':
          description: No diffusible company for this SIREN.
        '503':
          description: Anticipation stock not loaded yet (code `collecte_en_cours`). Nothing is charged.
      tags:
      - Acheteur
      operationId: getV1AcheteurBySiretProfil
      x-operation-id-source: derived
components:
  responses:
    Reponse402PaymentRequired:
      description: Payment required — x402 payment requirements in body (JSON) and headers.
    Reponse400InvalidInput:
      description: 'Invalid input. Body: {error, champ, message}. Never charged. / Jamais facturé.'
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-Api-Key
      description: 'Sirenic API key (srn_live_…) paying with prepaid credits (1 credit = 1 EUR, same prices as x402). Credits expire 12 months after purchase; calls are charged first to the credits closest to expiry. Optional: without it, the same routes answer 402 with a signable x402 quote. Insufficient balance → 402 {error: credits_insuffisants} WITHOUT a PAYMENT-REQUIRED header. Get a key at /compte.'
    BearerAuth:
      type: http
      scheme: bearer
      description: 'The same srn_live_… API key sent as Authorization: Bearer. A bearer value that is not an srn_ key is ignored (x402 flow unchanged).'