mightydatainc-json-surgery 1.2.1

An easy-to-call function that invokes iterative, AI-guided edits to a JSON-compatible object

mightydatainc-json-surgery

Iterative, AI-guided JSON modification powered by LLM services. Pass in any JSON-compatible object and natural-language instructions. json_surgery breaks the task into discrete atomic operations (assign, delete, append, insert, rename, etc.) that are verified and applied methodically until the object satisfies your instructions.

Installation

pip install mightydatainc-json-surgery

Quick Start

from openai import OpenAI
from mightydatainc_json_surgery import json_surgery

client = OpenAI()

data = {
    "title": "My Report",
    "items": [
        {"id": 1, "status": "draft"},
        {"id": 2, "status": "draft"},
    ],
}

result = json_surgery(
    openai_client=client,
    obj=data,
    modification_instructions='Set the status of every item to "published".',
)
print(result)

JSONSurgeryOptions

All options are optional.

Option	Type	Description
schema_description	str	Human-readable schema description passed to the model so it can stay within the expected structure.
skipped_keys	list[str]	Keys to omit from the placemarked JSON representation shown to the model (e.g. large blobs irrelevant to the task).
on_validate_before_return	Callable[[Any], ValidationResult | None]	Called before the final object is returned. Return errors to force another round of corrections, or obj_corrected to substitute a fixed version.
on_work_in_progress	Callable[[Any], Any | None]	Called at the start of each iteration (after the first). Receives the current in-progress object; return a replacement to override it.
give_up_after_seconds	int	Raise JSONSurgeryError if the process exceeds this many seconds.
give_up_after_iterations	int	Raise JSONSurgeryError if the process exceeds this many iterations.

from mightydatainc_json_surgery import json_surgery, JSONSurgeryOptions

def validate(obj):
    if not obj.get("title"):
        return {"errors": ["title is required"]}

result = json_surgery(
    openai_client=client,
    obj=data,
    modification_instructions="Remove the 'draft' items and capitalise the title.",
    options=JSONSurgeryOptions(
        schema_description="Object with a 'title' string and an 'items' array.",
        give_up_after_seconds=120,
        give_up_after_iterations=20,
        on_validate_before_return=validate,
    ),
)

JSONSurgeryError

Raised when the process times out or exceeds the iteration limit. The partially-modified object is available on the exception as .obj.

from mightydatainc_json_surgery import json_surgery, JSONSurgeryError

try:
    result = json_surgery(
        openai_client=client,
        obj=data,
        modification_instructions="...",
        options={"give_up_after_iterations": 5},
    )
except JSONSurgeryError as e:
    print("Gave up:", e)
    print("Last known state:", e.obj)

Utility exports

placemarked_json_stringify

Serializes a JSON-compatible object to a string annotated with path comments, the same format shown to the model internally.

from mightydatainc_json_surgery import placemarked_json_stringify

print(placemarked_json_stringify({"a": [1, 2]}, indent=2))
# // root
# {
#   // root["a"]
#   "a": [
#     // root["a"][0]
#     1,
#
#     // root["a"][1]
#     2
#   ]
# }

navigate_to_json_path

Traverses a JSON-compatible object by a path list and returns the parent, key/index, and target.

from mightydatainc_json_surgery import navigate_to_json_path

result = navigate_to_json_path({"items": [{"name": "Alice"}]}, ["items", 0, "name"])
print(result["path_target"])  # "Alice"

Installation and usage

pip install mightydatainc-json-surgery

from mightydatainc_json_surgery import json_surgery

Requires Python >=3.13.