This record as markdown: /tools/io-tinyfn-tinyfn/json-minify.md
What json_minify does on TinyFn
AI agents call json_minify 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 |
|---|---|---|---|
json_str | string | Yes | JSON to minify |
Parameters from the server's own tool schema.
Why json_minify is rated Low
This tool performs a deterministic, read-only transformation of JSON data by removing whitespace. It has no side effects, does not write or delete data, and cannot cause harm beyond processing the input string.
From the tool's definition Minify JSON (remove whitespace)
Attacks that exploit this kind of access
The rule that runs json_minify 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 json_minify, this is the rule to start with:
json_minify 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 json_minify call is checked against it from then on.
Questions about json_minify
Minify JSON (remove whitespace). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
json_minify accepts 1 parameter: json_str. Required: json_str. 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 json_minify: 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.
json_minify 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 json_minify 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 json_minify. 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.
json_minify 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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