diff --git a/.gitignore b/.gitignore
index c131d997..6098a015 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,5 +41,8 @@ localstack_data/
 sandbox/specification/*
 /volume/*
 /coverage.xml
+/lines-of-code-report*
+/specification/postman
+/sandbox/specification/*
 /integration-test-results.xml
 /specification/tmp/*
diff --git a/Makefile b/Makefile
index 852f59b0..8087f3f2 100644
--- a/Makefile
+++ b/Makefile
@@ -62,6 +62,16 @@ config:: # Configure development environment (main) @Configuration
 precommit: test-unit build test-integration lint ## Pre-commit tasks
 	python -m this
 
+SPEC_DIR := $(CURDIR)/specification
+POSTMAN_DIR := $(SPEC_DIR)/postman
+
+convert-postman: # Create Postman collection from OAS spec
+	mkdir -p $(POSTMAN_DIR)
+	cp $(SPEC_DIR)/eligibility-signposting-api.yaml $(POSTMAN_DIR)/
+	docker build -t portman-converter -f $(POSTMAN_DIR)/Dockerfile $(SPEC_DIR)
+	docker run --rm -v $(SPEC_DIR):/app portman-converter \
+		portman -l /app/eligibility-signposting-api.yaml -o /app/postman/collection.json
+	rm $(POSTMAN_DIR)/eligibility-signposting-api.yaml
 # ==============================================================================
 
 ${VERBOSE}.SILENT: \
diff --git a/README.md b/README.md
index b1bbbce8..daac8e8d 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@ The software will only be used for signposting an individual to an appropriate s
     - [Testing](#testing)
   - [Sandbox](#sandbox)
   - [Conflict with yanai](#conflict-with-yanai)
+  - [Creating a Postman collection](#creating-a-postman-collection)
   - [Design](#design)
     - [Diagrams](#diagrams)
     - [Modularity](#modularity)
@@ -103,6 +104,17 @@ If you have previously built [yanai](https://nhsd-confluence.digital.nhs.uk/page
  docker rmi localstack/localstack
 ```
 
+## Creating a Postman collection
+
+A Postman collection can be generated from the Open API specification in `specification/` by running the following make command:
+
+```shell
+make convert-postman
+```
+
+The conversion is done using the [Portman CLI](https://github.com/apideck-libraries/portman). The resulting Postman collection
+is saved to `specification/postman/`.
+
 ## Design
 
 We'll be separating our [presentation](https://martinfowler.com/eaaDev/SeparatedPresentation.html) layer (where API logic lives, in [`views/`](src/eligibility_signposting_api/views)), [business services](https://martinfowler.com/eaaCatalog/serviceLayer.html) layer (where business logic lives, in [`services/`](src/eligibility_signposting_api/services)) and [repository](https://martinfowler.com/eaaCatalog/repository.html) layer (where database logic lives, [`repos/`](src/eligibility_signposting_api/repos)). We will be using [wireup](https://pypi.org/project/wireup/) for [dependency injection](https://pinboard.in/u:brunns/t:dependency-injection), so services get their dependencies given to them ("injection"), and wireup takes care of that. (We'll usually use the [`@service` annotation](https://maldoinc.github.io/wireup/latest/services/), but [factory functions](https://maldoinc.github.io/wireup/latest/factory_functions/) will be used where necessary, typically for creating resources from 3rd party libraries.)  We'll be using [Pydantic](https://pypi.org/project/pydantic/) for both response models and database models.
diff --git a/scripts/config/vale/styles/config/vocabularies/words/accept.txt b/scripts/config/vale/styles/config/vocabularies/words/accept.txt
index cae10a15..d4e7d15e 100644
--- a/scripts/config/vale/styles/config/vocabularies/words/accept.txt
+++ b/scripts/config/vale/styles/config/vocabularies/words/accept.txt
@@ -22,3 +22,4 @@ colima
 wireup
 Pydantic
 yanai
+Portman
diff --git a/specification/postman/Dockerfile b/specification/postman/Dockerfile
new file mode 100644
index 00000000..5f164b15
--- /dev/null
+++ b/specification/postman/Dockerfile
@@ -0,0 +1,9 @@
+FROM node:18-alpine
+
+RUN npm install -g @apideck/portman
+
+WORKDIR /app
+
+COPY ../eligibility-signposting-api.yaml .
+
+CMD ["portman", "-l", "eligibility-signposting-api.yaml", "-o", "collection.json"]