diff --git a/biblio-tools/v1/unpaywall/expand.ini b/biblio-tools/v1/unpaywall/expand.ini
new file mode 100644
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+++ b/biblio-tools/v1/unpaywall/expand.ini
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+# OpenAPI Documentation - JSON format (dot notation)
+post.responses.default.description = Return a JSON, composed of `id`, `value`, where value is a DOI
+post.responses.default.content.application/json.schema.$ref = #/components/schemas/JSONStream
+post.summary = Find openaccess data in unpaywall database
+post.requestBody.required = true
+post.requestBody.content.application/json.schema.$ref = #/components/schemas/JSONStream
+
+# Necessary plugins
+[use]
+plugin = basics
+plugin = analytics
+plugin = storage
+
+# Flow configuration
+[JSONParse]
+separator = *
+
+[env]
+path = size
+value = 10
+
+path = indent
+value = true
+
+path = token
+value = env('UNPAYWALL_API_KEY')
+
+
+# Pour traiter par lot on groupe puis on utilise spawn qui crée un buffer par lot
+[group]
+size = env('size')
+
+[spawn]
+[spawn/ungroup]
+[spawn/bufferize]
+
+# On réalise un mapping dynamique sur le champ value (et on sauvegarde les correspondances trouvées)
+[spawn/combine]
+path = value
+default = n/a
+primer = get('bufferID')
+prepend = buffers
+append = transit
+persistent = true
+
+[spawn/combine/group]
+size = env('size')
+
+[spawn/combine/replace]
+path = dois
+value = self().map('value').map(x => JSON.stringify(x)).join(',')
+
+# On crée un objet contenant tous les valeurs nécessaire pour créer une requete
+[spawn/combine/replace]
+path = query
+value = fix('{GetByDOI(dois:[', self.dois, ']){doi, is_oa, oa_status, best_oa_location { host_type }}}').join('')
+
+[spawn/combine/URLStream]
+url = https://unpaywall.inist.fr/api/graphql
+header = env('token').prepend('x-api-key:')
+path = data.GetByDOI.*
+timeout = 5000
+noerror = false
+
+# On supprime les réponses qui n'ont pas abouties (
+[spawn/combine/drop]
+path = is_oa
+
+# On créé l'object attendu par combine { id, value } pour faire le mapping
+[spawn/combine/replace]
+path = id
+value = get('doi')
+
+path = value.is_oa
+value = get('is_oa')
+
+path = value.oa_status
+value = get('oa_status')
+
+path = value.host_type
+value = get('best_oa_location.host_type', 'n/a')
+
+# On nettoie l'objet en supprimant les champs temporaires
+[spawn/exchange]
+value = self().omit('bufferID')
+
+# On simplifie la structure
+[assign]
+path = value
+value = get('value.value', self.value)
+
+[dump]
+indent = env('indent')