You can filter LeetCode problems with custom Python scripts and pass the result to list or pick via --plan.

Python scripting is gated behind the optional pym Cargo feature. A default cargo install leetcode-cli does not include it — install with cargo install leetcode-cli --features pym, otherwise --plan is silently ignored.

Scripts live in the scripts directory under your storage root (~/.leetcode/scripts by default; configurable via [storage] scripts).

# ~/.leetcode/scripts/plan1.py
import json

def plan(sps, stags):
    # `print` works here — print the two args if you want to inspect their shape.
    problems = json.loads(sps)
    tags = json.loads(stags)

    tm = {}
    for tag in tags:
        tm[tag["tag"]] = tag["refs"]

    ret = []
    for i in problems:
        if i["level"] == 1 and str(i["id"]) in tm["linked-list"]:
            ret.append(str(i["id"]))

    # Return a List[str] of problem ids
    return ret

The module must define plan(sps, stags):

• sps — JSON string of all problems.
• stags — JSON string of all tags.
• returns a List[str] of problem ids to keep.

leetcode list -p plan1     # filter the list down to the plan's ids
leetcode pick -p plan1     # pick from the filtered set