# Schematic Input and Ground Review

> Review inputs without catalogued outputs and outputs connected to ground Inventory selected built-in simulation-symbol inputs with no catalogued output on their net and catalogued push-pull outputs on simulation ground.

Part of usefulweb.app (https://usefulweb.app/). Part of [Ohmforge](https://ohmforge.usefulweb.app/) (ownerApp: ohmforge). Results are deterministic calculations from the inputs and the listed assumptions; the API returns exactly what the web page shows.

## Use it
- Human interface: https://ohmforgeinputgroundreview.usefulweb.app/ (interactive tool at https://ohmforgeinputgroundreview.usefulweb.app/tool)
- JSON API: POST https://ohmforgeinputgroundreview.usefulweb.app/api/v1/calculate with a JSON object of inputs (schema: https://ohmforgeinputgroundreview.usefulweb.app/api/v1/tool)
- OpenAPI: https://ohmforgeinputgroundreview.usefulweb.app/openapi.json
- MCP (Streamable HTTP): https://ohmforgeinputgroundreview.usefulweb.app/mcp - tool `ohmforge_input_ground_review`

## Inputs
- project (textarea): Ohmforge project JSON - Paste an exported .ohmforge.json project. This tool does not accept KiCad files.

## Method
- Uses the same bounded native-project validation, pin positions and net connectivity as the Ohmforge workspace.
- Classifies built-in AND, OR, NAND, NOR, XOR, NOT and comparator simulation-symbol pins. Other component pins are unclassified, and may include sources.
- Lists classified inputs with no classified push-pull output on their resolved net, including the number of unclassified component pins and whether the net is ground.
- Separately lists classified push-pull outputs on simulation ground. Each list is limited to 100 terminals; total and omitted counts include all findings.
- Roles describe the built-in simulation symbols and may not match physical components. A ground input can be intentional and the absence of a catalogued output does not prove that the input is floating.

## Limits
- This is a limited inventory, not proof that an input is floating or that a circuit is safe. Unclassified pins may include sources; a ground connection may be intentional. The review does not assess power, voltage, ratings or physical design.