File Convert

Documents

file-convert

File Convert is an Agent Skill for documents published in the fuyuxiang/echo-agent repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Convert between file formats: CSV↔JSON, Markdown↔HTML, YAML↔JSON, images, and more. No external service needed.

View on GitHub ↗

QUICK START

How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

Open your project in Codex.
Copy and paste the prompt below.
Review files and risks before approving any action.

Prompt to paste

Inspect the Agent Skill at https://github.com/fuyuxiang/echo-agent/blob/HEAD/skills/utility/file-convert/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/file-convert, but wait for my approval before writing files or running scripts.

Copying this prompt does not install or run the skill. Review third-party files before use.

File Convert

Common format conversions using Python stdlib + minimal dependencies.

Quick Conversions

CSV → JSON

python3 -c "import csv,json,sys; print(json.dumps(list(csv.DictReader(open(sys.argv[1]))),ensure_ascii=False,indent=2))" data.csv

JSON → CSV

import json, csv, sys
data = json.load(open(sys.argv[1]))
w = csv.DictWriter(sys.stdout, fieldnames=data[0].keys())
w.writeheader(); w.writerows(data)

YAML → JSON

python3 -c "import yaml,json,sys; print(json.dumps(yaml.safe_load(open(sys.argv[1])),ensure_ascii=False,indent=2))" file.yaml

JSON → YAML

python3 -c "import yaml,json,sys; print(yaml.dump(json.load(open(sys.argv[1])),allow_unicode=True,default_flow_style=False))" file.json

Markdown → HTML

pip install markdown
python3 -c "import markdown,sys; print(markdown.markdown(open(sys.argv[1]).read(),extensions=['tables','fenced_code']))" file.md

Base64 encode/decode

base64 < file.bin > file.b64
base64 -d < file.b64 > file.bin

Universal Converter Script

python3 scripts/convert.py input.csv output.json
python3 scripts/convert.py data.yaml data.json
python3 scripts/convert.py README.md README.html

Auto-detects format from file extension and performs the appropriate conversion.