ai-nd-co-agent-tools 0.1.0

Codex-backed text transformation and Kokoro TTS command-line tools.

agent-tools

Python CLI tools for:

• transforming piped text through the private Codex ChatGPT-backed backend used by local Codex
• synthesizing the result to WAV with Kokoro-82M

This repo is intentionally wired to the local Codex login state in ~/.codex/.

Status

This is an experimental public package with a private Codex dependency.

The transform command mirrors the current request shape used by the local Codex source tree and depends on ChatGPT-backed auth in ~/.codex/auth.json.

It does not use:

• codex exec
• codex app-server
• the public OpenAI API key flow

That means:

• you must already be logged into local Codex
• backend compatibility can break if Codex internals or backend contracts change
• this package is best suited for users who already use local Codex

Requirements

• Python 3.12+
• local Codex already logged in via ChatGPT
• espeak-ng installed for best Kokoro English fallback behavior

Install

cd repos/agent-tools
uv venv
uv pip install -e ".[dev]"

Public package install:

pip install ai-nd-co-agent-tools

Usage

Transform text

echo "Rewrite this into short spoken narration." | agent-tools transform \
  --system-prompt-file prompt_examples/rewrite_for_tts.md

Optional controls:

echo "Input text" | agent-tools transform \
  --system-prompt-file prompt_examples/rewrite_for_tts.md \
  --model gpt-5 \
  --reasoning-effort medium \
  --fast

Text to speech

echo "Hello world." | agent-tools tts --output-file hello.wav

End-to-end pipeline

cat input.txt | agent-tools transform \
  --system-prompt-file prompt_examples/rewrite_for_tts.md \
  | agent-tools tts --voice af_heart --output-file out.wav

Notes

• transform reads stdin by default and writes plain text to stdout.
• tts reads stdin by default and writes WAV bytes to stdout unless --output-file is set.
• tts --device auto prefers CUDA and falls back to CPU.
• transform refreshes ChatGPT tokens when the Codex backend returns 401.

CPU performance

Measured on this machine on April 15, 2026 with forced CPU:

Scenario	Wall time	Audio time	Real-time factor
first-ever cold init after dependency/model setup	~43.1s	n/a	n/a
cached init	~2.9s	n/a	n/a
warm short	0.309s	4.80s	0.064
warm medium	1.199s	15.53s	0.077
warm long	2.514s	26.70s	0.094

Interpretation:

• warm CPU generation on this machine is about 10x-15x faster than realtime
• the main cost is cold startup/model load, not steady-state synthesis

To reproduce locally:

python scripts/benchmark_tts_cpu.py

Troubleshooting

• Missing ~/.codex/auth.json: run codex login
• Expired auth: rerun codex login if refresh fails permanently
• Missing espeak-ng: install it for better English fallback behavior
• Slow first run: expected; Kokoro downloads voices/models and initializes the pipeline