URL decode text.
AI agents call url_decode to retrieve information from MCP Server Fly without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
URL decoding is a reversible text processing operation that retrieves or transforms data without modifying any state or external resources. It performs a query-like function on provided input, making it a Read operation. The severity is low because misuse cannot damage systems, delete data, or cause significant harm—at worst it returns unhelpful or garbled output.
From the tool's definition Tool name 'url_decode' and description 'URL decode text' indicate a text transformation operation with no side effects—decoding URL-encoded strings and returning the decoded result.
Attacks that exploit this kind of access
URL decode text. It is categorised as a Read tool in the MCP Server Fly MCP Server, which means it retrieves data without modifying state.
Register the MCP Server Fly MCP server in PolicyLayer and add a rule for url_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 MCP Server Fly. Nothing to install.
url_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_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_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_decode is provided by the MCP Server Fly MCP server (kushalkachari993-dev/mcp-server-fly). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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