Query-String Parse / Build

Parse a URL query string into params, or build a query string from params (x-www-form-urlencoded, RFC 3986).

Free tier eligible — 500 calls/month with a free key from /pricing; x402 pay-per-call above quota.

Parameters

Parameter	Type	Required	Description
`mode`	string	optional	parse \| build (default parse) One of: parse, build
`query_string`	string	optional	Query string to parse (mode=parse)
`params`	object	optional	{key: value\|array-of-values} to build (mode=build)

Call it over MCP (JSON-RPC 2.0)

curl -s https://wingmanprotocol.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": {"name": "query_string_convert", "arguments": {"mode": "parse", "query_string": "wingman protocol", "params": {}}}}'

Or plain HTTP

curl -s https://wingmanprotocol.com/tools/query_string_convert \
  -H 'Content-Type: application/json' \
  -d '{"mode": "parse", "query_string": "wingman protocol", "params": {}}'

Try it live

Edit the JSON and run it — this POSTs to https://wingmanprotocol.com/tools/query_string_convert from your browser.

This tool is x402-metered — agents pay per call with USDC on Base. The 402 response below is the standard x402 payment-requirements envelope: sign the EIP-3009 authorization and retry with the X-Payment header, or get a free key at /pricing (500 calls/month, no card, no crypto).