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Microservice to generate a diff (RFC 6902) between two json documents A & B, that can be also used to transform/patch document A into document B.

If you have a given JSON document with a series of updates, this can be used to reduce the amount of data to send over the wire.

Built using jsonpatch.

Quick start

Execute the microservice container with the following command :

docker run -ti -p 9909:80 msagency/msa-json-patch


$ curl -X POST "http://localhost:9909/json/diff" -H "Content-Type: application/json" \
-d '[{"name": "test","val": 10}, {"name": "test","val": 20}]'
  "data": "[{\"op\": \"replace\", \"value\": 20, \"path\": \"/val\"}]"

$ curl -X POST "http://localhost:9909/json/patch" -H "Content-Type: application/json" \
-d '[{"name": "test","val": 10}, [{ "op": "replace","path": "/val", "value": 20}]]'
  "data": {
    "name": "test",
    "val": 20


  • POST /json/diff : Returns a diff between two JSON documents A and B. Expected input is [A,B]
  • POST /json/patch : Returns the generated document B from patching the document A. Expected input is [A, patch]

Standard endpoints


A project by the Microservices Agency.