pytk-ai 0.1.3

Python command planning, execution, and output filtering for PYTK-AI

PYTK-AI

A lightweight, dependency-free Python library and CLI that executes shell commands and filters their output into compact, token-efficient results for LLM consumption.

PYTK-AI reduces token usage by 25-50% across common development commands through smart filtering, deduplication, and noise removal -- helping AI coding agents work faster and cheaper.

Features

• Smart output filtering -- 55+ filters for git, build tools, package managers, infrastructure commands, and more
• Zero dependencies -- standard library only, installs anywhere Python 3.10+ runs
• Fail-safe design -- if a filter fails, raw output passes through unchanged
• Exit code preservation -- underlying command exit codes propagate correctly
• Compound command support -- handles &&, ||, ;, &, and simple pipes
• Embeddable -- small enough to drop into agent toolchains, hooks, and scripts

Installation

From PyPI

pip install pytk-ai

Or with uv:

uv tool install pytk-ai

From source

git clone https://github.com/nasirus/pytk-ai.git
cd pytk-ai
pip install -e .

CLI Usage

pytk-ai run git status
pytk-ai run "cargo test && git push"
pytk-ai run "docker ps"

Library Usage

from pytk_ai.runner import run_command

result = run_command("git status")
print(result.filtered_output)
print(result.exit_code)

Supported Filters

Category	Examples	Avg Token Reduction
Git	git status, git log, git diff, git pull	40%
Build	cargo build, tsc, next build	19%
Files	find, wc, rg	18%
Go	golangci-lint, go test	26%
Infrastructure	docker ps, kubectl, aws, docker logs	46%
Packages	npm list, pip list, pnpm list, bundle install	47%
Python	pytest, mypy, ruff	24%
Ruby	rubocop, rspec	30%
Tests	cargo test, pytest	36%
Generic	ANSI stripping, progress bars, line collapse	52%

How It Works

Command input
    |
    v
Plan/Normalize --> Execute subprocess --> Apply filter --> Structured result
                                              |
                                    (smart filtering, grouping,
                                     deduplication, truncation)

1. Planning -- determines if the command benefits from PYTK-AI filtering
2. Execution -- runs the command via subprocess with stdout/stderr capture
3. Filtering -- applies domain-specific filters to compress the output
4. Result -- returns a CommandResult with filtered output, exit code, and metadata

Filter Benchmark Results

By Category

Category	Scenarios	Avg Raw Tokens	Avg Filtered	Avg Reduction
build	8	155	138	18.6%
files	6	272	192	18.4%
generic	2	8	4	51.8%
git	8	44	25	40.5%
go	2	438	244	25.6%
infra	11	68	35	46.4%
packages	8	57	26	46.9%
python	3	147	108	24.2%
ruby	2	158	130	30.4%
system	3	646	646	0.0%
tests	2	40	26	35.8%
Total	55			24.5%

Top Filters by Token Reduction

Filter	Command	Raw	Filtered	Saved	Reduction
git.pull	git pull	28	4	24	85.7%
kubectl.pods	kubectl get pods -A -o json	96	21	75	78.1%
git.log	git log -2	65	18	47	72.3%
aws.read	aws ec2 describe-instances --output json	74	21	53	71.6%
python.pytest	pytest -q	165	55	110	66.7%
git.diff	git diff	41	14	27	65.9%
bundle.install	bundle install	55	19	36	65.5%
git.status	git status	11	4	7	63.6%
kubectl.services	kubectl get services	56	22	34	60.7%
docker.ps	docker ps	76	30	46	60.5%
docker.images	docker images	45	18	27	60.0%
uv.sync	uv sync	15	6	9	60.0%
docker.compose.ps	docker compose ps	67	27	40	59.7%
npm.list	npm list	215	87	128	59.5%
pnpm.list	pnpm list --json	35	15	20	57.1%

License

MIT License

Acknowledgements

PYTK-AI is a Python port of RTK (Rust Token Killer), a high-performance Rust CLI proxy that reduces LLM token consumption by 60-90%. The filtering strategies, command coverage, and architectural patterns in this project are derived from RTK's design.

Citation

If you use PYTK-AI or RTK in your research or tooling, please cite the original project:

@software{rtk2024,
  title     = {RTK: Rust Token Killer},
  author    = {RTK AI},
  url       = {https://github.com/rtk-ai/rtk},
  year      = {2024},
  note      = {High-performance CLI proxy that reduces LLM token consumption by 60-90\%}
}