JSON Library

The json global provides lightweight JSON encode/decode helpers for scripts.

You can use it as a global (json) or load it explicitly:

local json = require("json")

Reference

json.encode(value) Returns a JSON string for Lua values (table, string, number, boolean, nil).
json.decode(text) Parses JSON text into Lua tables and primitives.
json.null Sentinel value used for JSON null.

Notes

Object keys must be strings when encoding Lua tables as JSON objects.
Array encoding uses consecutive numeric keys starting at 1.
json.decode returns json.null for JSON null.

Example

request = {
    fleet = "alpha",
    command = "move",
    target = {
        x = 8,
        y = 8,
        z = 8
    }
}

payload = json.encode(request)
response = term.httpPut("https://example.com/api/fleet", payload, "application/json")

if response ~= nil and response ~= "" then
    decoded = json.decode(response)
    if decoded.status == "ok" then
        print("Fleet command accepted")
    end
end