A high-performance conversion engine for bi-directional translation between JSON, YAML, and TOML data formats.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install formatgate
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install formatgate using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is FormatGate?
FormatGate is a specialized utility designed to bridge the gap between different data serialization formats. As a key component of the Openclaw Skills ecosystem, it provides a reliable API-driven interface for converting content across JSON, YAML, and TOML without losing structural integrity. It is particularly useful for AI agents and developers who need to normalize configuration files or data streams on the fly while maintaining round-trip safety.
By exposing a clean FastAPI endpoint, FormatGate allows automated workflows to ingest data in one format and output it in another, making it an essential tool for cross-platform integration and configuration management.
FormatGate Use Cases
- Normalizing configuration files across different development environments.
- Converting complex JSON API responses into YAML for improved human readability.
- Translating TOML manifests into JSON for programmatic processing within Openclaw Skills.
- Automating data transformation tasks in CI/CD pipelines.
- Ensuring round-trip consistency when editing configuration files across different toolchains.
How FormatGate Works
- The user or agent sends a POST request to the local FormatGate server at the /v1/convert endpoint.
- The request payload includes the raw content string, the input format, and the desired output format.
- FormatGate validates the input using Pydantic models to ensure the data is well-formed.
- The engine parses the source format and re-serializes it into the target format using specialized libraries.
- The server returns a structured JSON response containing the converted result or specific error details if the input was invalid.
FormatGate Setup
To get started with this skill, ensure you have Python installed and run the following commands:
# Install required dependencies
uv pip install fastapi uvicorn pydantic pyyaml
# Start the FormatGate server
uvicorn formatgate.app:app --port 8008
FormatGate Data Schema & Taxonomy
FormatGate uses a strictly typed schema to ensure data integrity across Openclaw Skills integrations:
| Parameter | Type | Description |
|---|---|---|
| content | String | The raw data string to be converted. |
| input_format | String | The format of the source data (json, yaml, or toml). |
| output_format | String | The target format for the result (json, yaml, or toml). |
| success | Boolean | Indicates if the conversion was successful. |
| result | String | The converted data string. |
| error | String | Contains error details if the conversion fails. |
FormatGate Advanced Features
- Support for all six conversion directions between JSON, YAML, and TOML.
- Round-trip safe processing to prevent data degradation during multiple conversions.
- Built-in error reporting for debugging malformed input strings.
- Lightweight FastAPI architecture optimized for low-latency local execution within Openclaw Skills environments.
- Easy integration with curl and other CLI tools for rapid testing.
SKILL.md
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