query_string_to_json
Convert a URL query string to JSON object.
This record as markdown: /tools/io-tinyfn-tinyfn/query-string-to-json.md
What query_string_to_json does on TinyFn
AI agents call query_string_to_json to retrieve information from TinyFn 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 |
|---|---|---|---|
query_string | string | Yes | Query string to convert (without ?) |
Parameters from the server's own tool schema.
Why query_string_to_json is rated Low
This tool retrieves/parses structured data from a URL query string format and outputs it as JSON. It performs no modifications to external state, creates no new data objects with side effects, and cannot be exploited for destructive or financial harm. It is a pure data transformation utility, falling squarely in the Read category as a data retrieval and formatting operation.
From the tool's definition Tool name 'query_string_to_json' and description 'Convert a URL query string to JSON object' indicate a parsing/conversion operation.
Attacks that exploit this kind of access
The rule that runs query_string_to_json safely
PolicyLayer is an MCP gateway: it sits between your AI agents and TinyFn, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For query_string_to_json, this is the rule to start with:
query_string_to_json 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 TinyFn, apply this rule, and every query_string_to_json call is checked against it from then on.
Questions about query_string_to_json
Convert a URL query string to JSON object. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
query_string_to_json accepts 1 parameter: query_string. Required: query_string. The full parameter table on this page comes from the server's own tool schema.
Register the TinyFn MCP server in PolicyLayer and add a rule for query_string_to_json: 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 TinyFn. Nothing to install.
query_string_to_json 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 query_string_to_json 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 query_string_to_json. 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.
query_string_to_json is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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