diff --git a/kingfisher_scrapy/spiders/armenia.py b/kingfisher_scrapy/spiders/armenia.py
index 98a680431..24a85c6a3 100644
--- a/kingfisher_scrapy/spiders/armenia.py
+++ b/kingfisher_scrapy/spiders/armenia.py
@@ -7,6 +7,11 @@
 
 
 class Armenia(BaseSpider):
+    """
+    Spider arguments
+      sample
+        Download only the first release package in the dataset.
+    """
     name = 'armenia'
     start_urls = ['https://armeps.am/ocds/release']
 
@@ -23,7 +28,7 @@ def parse(self, response):
                                                 data_type='release_package')
 
             json_data = json.loads(response.text)
-            if not (self.sample):
+            if not self.sample:
                 if 'next_page' in json_data and 'uri' in json_data['next_page']:
                     url = json_data['next_page']['uri']
                     yield scrapy.Request(
diff --git a/kingfisher_scrapy/spiders/australia.py b/kingfisher_scrapy/spiders/australia.py
index 85ac50769..802b5140b 100644
--- a/kingfisher_scrapy/spiders/australia.py
+++ b/kingfisher_scrapy/spiders/australia.py
@@ -6,7 +6,13 @@
 
 
 class Australia(LinksSpider):
-
+    """
+    API documentation
+      https://data.gov.au/dataset/ds-dga-5c7fa69b-b0e9-4553-b8df-2a022dd2e982/distribution/dist-dga-a7f471ad-e085-49b5-bd6b-1b270ea46e99/details?q=
+    Spider arguments
+      sample
+        Download only data released on 2018.
+    """
     name = 'australia'
 
     def start_requests(self):
diff --git a/kingfisher_scrapy/spiders/australia_nsw.py b/kingfisher_scrapy/spiders/australia_nsw.py
index b16b270e3..9ca3449c4 100644
--- a/kingfisher_scrapy/spiders/australia_nsw.py
+++ b/kingfisher_scrapy/spiders/australia_nsw.py
@@ -7,6 +7,13 @@
 
 
 class AustraliaNSW(BaseSpider):
+    """
+    API documentation
+      https://github.com/NSW-eTendering/NSW-eTendering-API/blob/master/README.md
+    Spider arguments
+      sample
+        Download only 30 releases.
+    """
     name = 'australia_nsw'
     start_urls = ['https://tenders.nsw.gov.au']
 
diff --git a/kingfisher_scrapy/spiders/chile_compra_bulk.py b/kingfisher_scrapy/spiders/chile_compra_bulk.py
index ba80c0c38..4aa0ab443 100644
--- a/kingfisher_scrapy/spiders/chile_compra_bulk.py
+++ b/kingfisher_scrapy/spiders/chile_compra_bulk.py
@@ -6,6 +6,11 @@
 
 
 class ChileCompraBulk(ZipSpider):
+    """
+    Spider arguments
+      sample
+        Download only data released on February 2017.
+    """
     name = 'chile_compra_bulk'
     download_warnsize = 0
     download_timeout = 99999
diff --git a/kingfisher_scrapy/spiders/chile_compra_records.py b/kingfisher_scrapy/spiders/chile_compra_records.py
index d1329e5a9..a602a3d81 100644
--- a/kingfisher_scrapy/spiders/chile_compra_records.py
+++ b/kingfisher_scrapy/spiders/chile_compra_records.py
@@ -2,6 +2,13 @@
 
 
 class ChileCompraRecords(ChileCompraBaseSpider):
+    """
+    Swagger API documentation
+      https://desarrolladores.mercadopublico.cl/docs/services/5a9ed02f718ed712f4403e75/operations/data-listaa-omes-agno-mes?
+    Spider arguments
+      sample
+        Download only data released on October 2017.
+    """
     name = 'chile_compra_records'
 
     def parse(self, response):
diff --git a/kingfisher_scrapy/spiders/chile_compra_releases.py b/kingfisher_scrapy/spiders/chile_compra_releases.py
index acd16e0ca..fd8f6fca6 100644
--- a/kingfisher_scrapy/spiders/chile_compra_releases.py
+++ b/kingfisher_scrapy/spiders/chile_compra_releases.py
@@ -2,6 +2,13 @@
 
 
 class ChileCompraReleases(ChileCompraBaseSpider):
+    """
+    Swagger API documentation
+      https://desarrolladores.mercadopublico.cl/docs/services/5a9ed02f718ed712f4403e75/operations/data-listaa-omes-agno-mes?
+    Spider arguments
+      sample
+        Download only data released on October 2017.
+    """
     name = 'chile_compra_releases'
 
     def parse(self, response):
diff --git a/kingfisher_scrapy/spiders/colombia.py b/kingfisher_scrapy/spiders/colombia.py
index 5f6328dad..2a5768b2a 100644
--- a/kingfisher_scrapy/spiders/colombia.py
+++ b/kingfisher_scrapy/spiders/colombia.py
@@ -9,6 +9,19 @@
 
 
 class Colombia(LinksSpider):
+    """
+    API documentation
+      https://www.colombiacompra.gov.co/transparencia/api
+    Swagger API documentation
+      https://apiocds.colombiacompra.gov.co:8443/apiCCE2.0/
+    Spider arguments
+      sample
+        Download only the first page of results.
+      page
+        The page number from which to start crawling.
+      year
+        The year to crawl. See API documentation for valid values.
+    """
     name = 'colombia'
     sleep = 120 * 60
 
diff --git a/kingfisher_scrapy/spiders/honduras_portal_records.py b/kingfisher_scrapy/spiders/honduras_portal_records.py
index 35dbf90b8..326328775 100644
--- a/kingfisher_scrapy/spiders/honduras_portal_records.py
+++ b/kingfisher_scrapy/spiders/honduras_portal_records.py
@@ -7,6 +7,13 @@
 
 
 class HondurasPortalRecords(BaseSpider):
+    """
+    API documentation
+      http://www.contratacionesabiertas.gob.hn/servicio/
+    Spider arguments
+      sample
+        Download only the first record package in the dataset.
+    """
     name = 'honduras_portal_records'
     download_delay = 0.9
 
diff --git a/kingfisher_scrapy/spiders/honduras_portal_releases.py b/kingfisher_scrapy/spiders/honduras_portal_releases.py
index cd1216dd1..c511809d2 100644
--- a/kingfisher_scrapy/spiders/honduras_portal_releases.py
+++ b/kingfisher_scrapy/spiders/honduras_portal_releases.py
@@ -7,6 +7,13 @@
 
 
 class HondurasPortalReleases(BaseSpider):
+    """
+    API documentation
+      http://www.contratacionesabiertas.gob.hn/servicio/
+    Spider arguments
+      sample
+        Download only the first release package in the dataset.
+    """
     name = 'honduras_portal_releases'
     download_delay = 0.9
 
diff --git a/kingfisher_scrapy/spiders/kenya_makueni.py b/kingfisher_scrapy/spiders/kenya_makueni.py
index b35a02229..6c099f247 100644
--- a/kingfisher_scrapy/spiders/kenya_makueni.py
+++ b/kingfisher_scrapy/spiders/kenya_makueni.py
@@ -7,6 +7,13 @@
 
 
 class KenyaMakueni(BaseSpider):
+    """
+    Swagger API documentation
+        https://opencontracting.makueni.go.ke/swagger-ui.html#/ocds-controller
+    Spider arguments
+      sample
+        Download only the first 10 release packages in the dataset.
+    """
     name = 'kenya_makueni'
     url = 'https://opencontracting.makueni.go.ke/api/ocds/package/all?pageSize={}&pageNumber={}'
 
diff --git a/kingfisher_scrapy/spiders/malta.py b/kingfisher_scrapy/spiders/malta.py
index a16e282a0..44ce13810 100644
--- a/kingfisher_scrapy/spiders/malta.py
+++ b/kingfisher_scrapy/spiders/malta.py
@@ -8,6 +8,13 @@
 
 
 class Malta(ZipSpider):
+    """
+    API documentation
+      https://docs.google.com/document/d/1VnCEywKkkQ7BcVbT7HlW2s_N_QI8W0KE/edit
+    Spider arguments
+      sample
+        Download only data released on October 2019.
+    """
     name = 'malta'
 
     def start_requests(self):
diff --git a/kingfisher_scrapy/spiders/mexico_quien_es_quien.py b/kingfisher_scrapy/spiders/mexico_quien_es_quien.py
index 38d930058..a17ce4f54 100644
--- a/kingfisher_scrapy/spiders/mexico_quien_es_quien.py
+++ b/kingfisher_scrapy/spiders/mexico_quien_es_quien.py
@@ -8,6 +8,15 @@
 
 
 class MexicoQuienEsQuien(BaseSpider):
+    """
+    API documentation
+      https://quienesquienapi.readthedocs.io/es/latest/
+    Swagger API documentation
+      https://api.quienesquien.wiki/v2/docs/
+    Spider arguments
+      sample
+        Download a single record package with 10 records.
+    """
     name = 'mexico_quien_es_quien'
     download_delay = 0.9
     url = 'https://api.quienesquien.wiki/v2/contracts?limit={}&offset={}'
diff --git a/kingfisher_scrapy/spiders/nepal_dhangadhi.py b/kingfisher_scrapy/spiders/nepal_dhangadhi.py
index db5049194..88671c52f 100644
--- a/kingfisher_scrapy/spiders/nepal_dhangadhi.py
+++ b/kingfisher_scrapy/spiders/nepal_dhangadhi.py
@@ -7,6 +7,11 @@
 
 
 class NepalDhangadhi(BaseSpider):
+    """
+    Spider arguments
+      sample
+        Download only the first release package in the dataset.
+    """
     name = "nepal_dhangadhi"
 
     def start_requests(self):
diff --git a/kingfisher_scrapy/spiders/nepal_portal.py b/kingfisher_scrapy/spiders/nepal_portal.py
index 3af259431..514158952 100644
--- a/kingfisher_scrapy/spiders/nepal_portal.py
+++ b/kingfisher_scrapy/spiders/nepal_portal.py
@@ -7,6 +7,11 @@
 
 
 class NepalPortal(BaseSpider):
+    """
+    Spider arguments
+      sample
+        Download only data released on 2018.
+    """
     name = 'nepal_portal'
 
     def start_requests(self):
diff --git a/kingfisher_scrapy/spiders/nigeria_portal.py b/kingfisher_scrapy/spiders/nigeria_portal.py
index ad4e2d298..a546a7845 100644
--- a/kingfisher_scrapy/spiders/nigeria_portal.py
+++ b/kingfisher_scrapy/spiders/nigeria_portal.py
@@ -6,6 +6,11 @@
 
 
 class NigeriaPortal(BaseSpider):
+    """
+    Spider arguments
+      sample
+        Download only the first release package in the dataset.
+    """
     name = 'nigeria_portal'
     start_urls = ['http://nocopo.bpp.gov.ng/OpenData.aspx']
     download_delay = 0.9
diff --git a/kingfisher_scrapy/spiders/paraguay_hacienda.py b/kingfisher_scrapy/spiders/paraguay_hacienda.py
index 87ead8a0e..500b6c29b 100644
--- a/kingfisher_scrapy/spiders/paraguay_hacienda.py
+++ b/kingfisher_scrapy/spiders/paraguay_hacienda.py
@@ -8,6 +8,18 @@
 
 
 class ParaguayHacienda(BaseSpider):
+    """
+    Swagger API documentation
+      https://datos.hacienda.gov.py/odmh-api-v1/api-docs/
+    Spider arguments
+      sample
+        Download only 11 releases.
+    Environment variables
+      KINGFISHER_PARAGUAY_HACIENDA_REQUEST_TOKEN
+        To get an API account and request token go to https://datos.hacienda.gov.py/aplicaciones/new.
+      KINGFISHER_PARAGUAY_HACIENDA_CLIENT_SECRET
+        Your client secret generated.
+    """
     name = 'paraguay_hacienda'
 
     start_time = None
diff --git a/kingfisher_scrapy/spiders/portugal.py b/kingfisher_scrapy/spiders/portugal.py
index 81216c14b..b939162e5 100644
--- a/kingfisher_scrapy/spiders/portugal.py
+++ b/kingfisher_scrapy/spiders/portugal.py
@@ -7,6 +7,13 @@
 
 
 class Portugal(ZipSpider):
+    """
+    API documentation
+        https://dados.gov.pt/pt/apidoc/
+    Spider arguments
+      sample
+        Download only the first file in the dataset.
+    """
     name = 'portugal'
     download_warnsize = 0
     download_timeout = 9999
diff --git a/kingfisher_scrapy/spiders/uganda_releases.py b/kingfisher_scrapy/spiders/uganda_releases.py
index c8d38a759..02e770c39 100644
--- a/kingfisher_scrapy/spiders/uganda_releases.py
+++ b/kingfisher_scrapy/spiders/uganda_releases.py
@@ -7,6 +7,13 @@
 
 
 class Uganda(BaseSpider):
+    """
+    API documentation
+        https://docs.google.com/spreadsheets/d/10tVioy-VOQa1FwWoRl5e1pMbGpiymA0iycNcoDFkvks/edit#gid=365266172
+    Spider arguments
+      sample
+        Download only 19 releases.
+    """
     name = 'uganda_releases'
     download_delay = 0.9
 
diff --git a/kingfisher_scrapy/spiders/uruguay_historical.py b/kingfisher_scrapy/spiders/uruguay_historical.py
index 0988b2371..310061363 100644
--- a/kingfisher_scrapy/spiders/uruguay_historical.py
+++ b/kingfisher_scrapy/spiders/uruguay_historical.py
@@ -4,6 +4,13 @@
 
 
 class UruguayHistorical(ZipSpider):
+    """
+    API documentation
+      https://www.gub.uy/agencia-compras-contrataciones-estado/datos-y-estadisticas/datos/open-contracting
+    Spider arguments
+      sample
+        Download only data released on 2002.
+    """
     name = 'uruguay_historical'
     # the files takes too long to be downloaded, so we increase the download timeout
     download_timeout = 1000
diff --git a/kingfisher_scrapy/spiders/uruguay_records.py b/kingfisher_scrapy/spiders/uruguay_records.py
index 8584f44ff..4645f8771 100644
--- a/kingfisher_scrapy/spiders/uruguay_records.py
+++ b/kingfisher_scrapy/spiders/uruguay_records.py
@@ -6,6 +6,13 @@
 
 
 class UruguayRecords(UruguayBase):
+    """
+    API documentation
+      https://www.gub.uy/agencia-compras-contrataciones-estado/datos-y-estadisticas/datos/open-contracting
+    Spider arguments
+      sample
+        Download only 1 record.
+    """
     name = 'uruguay_records'
     base_record_url = 'https://www.comprasestatales.gub.uy/ocds/record/{}'
 
diff --git a/kingfisher_scrapy/spiders/uruguay_releases.py b/kingfisher_scrapy/spiders/uruguay_releases.py
index d980f064f..3e06347c8 100644
--- a/kingfisher_scrapy/spiders/uruguay_releases.py
+++ b/kingfisher_scrapy/spiders/uruguay_releases.py
@@ -6,6 +6,13 @@
 
 
 class UruguayReleases(UruguayBase):
+    """
+    API documentation
+      https://www.gub.uy/agencia-compras-contrataciones-estado/datos-y-estadisticas/datos/open-contracting
+    Spider arguments
+      sample
+        Download only 1 release.
+    """
     name = 'uruguay_releases'
 
     def parse_list(self, response):
diff --git a/kingfisher_scrapy/spiders/zambia.py b/kingfisher_scrapy/spiders/zambia.py
index 4f1de5943..a1bbc723e 100644
--- a/kingfisher_scrapy/spiders/zambia.py
+++ b/kingfisher_scrapy/spiders/zambia.py
@@ -6,6 +6,11 @@
 
 
 class Zambia(ZipSpider):
+    """
+    Spider arguments
+      sample
+        Download only data released on July 2016.
+    """
     name = 'zambia'
 
     def start_requests(self):
diff --git a/tests/test_extensions.py b/tests/test_extensions.py
index 216dff325..332001430 100644
--- a/tests/test_extensions.py
+++ b/tests/test_extensions.py
@@ -6,7 +6,7 @@
 import pytest
 from scrapy.exceptions import NotConfigured
 
-from kingfisher_scrapy.extensions import KingfisherProcessAPI, KingfisherFilesStore
+from kingfisher_scrapy.extensions import KingfisherFilesStore, KingfisherProcessAPI
 from kingfisher_scrapy.items import FileError
 from tests import spider_with_crawler