url_encode_decode
Encode or decode URL/URI strings. Use this to safely encode special characters for URLs or decode percent-encoded URL strings back to readable text. Parameters: text — The string to encode or decode. mode — 'encode' (default) or 'decode'.
This record as markdown: /tools/com-gadgethumans-swarm-x402-middleware/url-encode-decode.md
What url_encode_decode does on X402 Middleware
AI agents call url_encode_decode to retrieve information from X402 Middleware without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
mode | string | — | |
text | string | Yes |
Parameters from the server's own tool schema.
Why url_encode_decode is rated Low
This is a utility function for string transformation. Encoding and decoding are read-only operations that transform data representation without creating, modifying, deleting, executing code, or triggering external side effects. The tool has no financial implications and does not execute arbitrary commands. It strictly retrieves transformed representations of input data.
From the tool's definition Tool performs URL encoding/decoding operations with modes 'encode' (default) or 'decode'. Description states it is used to "safely encode special characters for URLs or decode percent-encoded URL strings back to readable text." No data modification, creation,…
Attacks that exploit this kind of access
The rule that runs url_encode_decode safely
PolicyLayer is an MCP gateway: it sits between your AI agents and X402 Middleware, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For url_encode_decode, this is the rule to start with:
url_encode_decode is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect X402 Middleware, apply this rule, and every url_encode_decode call is checked against it from then on.
Questions about url_encode_decode
Encode or decode URL/URI strings. Use this to safely encode special characters for URLs or decode percent-encoded URL strings back to readable text. Parameters: text — The string to encode or decode. mode — 'encode' (default) or 'decode'. It is categorised as a Read tool in the X402 Middleware MCP Server, which means it retrieves data without modifying state.
url_encode_decode accepts 2 parameters: mode, text. Required: text. The full parameter table on this page comes from the server's own tool schema.
Register the X402 Middleware MCP server in PolicyLayer and add a rule for url_encode_decode: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches X402 Middleware. Nothing to install.
url_encode_decode is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the url_encode_decode rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for url_encode_decode. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
url_encode_decode is provided by the X402 Middleware MCP server (@gadgethumans/x402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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