# MCP JSON Sanitizer

Remote MCP server on Cloudflare Workers that repairs malformed JSON strings into valid JSON for agent workflows.

## What It Does

`json_sanitizer` accepts a string that is supposed to be JSON but may have common LLM formatting issues. The Worker applies deterministic cleanup steps and returns valid JSON when recovery succeeds.

Handled fixes include:

- code fence removal
- smart quote normalization
- extraction of the JSON body from surrounding prose
- quoting bare object keys
- conversion of single-quoted strings
- trailing comma removal
- closing missing `}` and `]`

## Tool

### `json_sanitizer`

Input:

- `input`: malformed JSON-like string
- `pretty?`: pretty-print output JSON, defaults to `true`

Output:

- repaired JSON text
- structured metadata with applied fixes and parsed JSON value

## Transport

- MCP endpoint: `https://<your-worker>.workers.dev/mcp`
- Well-known manifest: `https://<your-worker>.workers.dev/.well-known/mcp/server.json`
- Health check: `https://<your-worker>.workers.dev/health`

## Monetization

Only actual tool execution requires payment:

- free: `GET /mcp`, `tools/list`, `initialize`, `ping`
- paid: `tools/call` for `json_sanitizer`

Payment settings:

- network: `eip155:8453` (Base)
- asset: `USDC`
- price: `0.001`
- payTo: `0x4505A361611DebB4928Db488ad7E345cD5821cD4`

## Deploy

1. Install dependencies with `npm install`.
2. Authenticate Wrangler with `npx wrangler login`.
3. Set the settlement signer privately with `npx wrangler secret put EVM_PRIVATE_KEY`.
4. Update `PUBLIC_BASE_URL` in [`wrangler.toml`](C:\Users\tiago\Desktop\s\wrangler.toml) to your final Worker URL.
5. Deploy with `npm run deploy`.