json_yaml_convert · Tools MCP: Risk & Policy

WHAT IT DOES

What json_yaml_convert does on Tools

AI agents use json_yaml_convert to create or update resources in Tools — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Tools environment.

PARAMETERS

Parameter	Type	Required	Description
`input`	string	Yes	JSON or YAML string
`direction`	string	—	Conversion direction (default: auto)

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why json_yaml_convert needs a policy

An AI agent can call json_yaml_convert faster than any human can review — one bad instruction and it creates or modifies resources in Tools by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

json_yaml_convert Rate-limited

json_yaml_convert stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "json_yaml_convert": {
      "limits": [
        {
          "counter": "json_yaml_convert_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Tools, so you can run agents against it safely.

FAQ

Questions about json_yaml_convert

What does the json_yaml_convert tool do? +

Convert between JSON and YAML formats. Auto-detects direction. It is categorised as a Write tool in the Tools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does json_yaml_convert accept? +

json_yaml_convert accepts 2 parameters: input, direction. Required: input. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on json_yaml_convert? +

Register the Tools MCP server in PolicyLayer and add a rule for json_yaml_convert: 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 Tools. Nothing to install.

What risk level is json_yaml_convert? +

json_yaml_convert is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit json_yaml_convert? +

Yes. Add a rate_limit block to the json_yaml_convert 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.

How do I block json_yaml_convert completely? +

Set action: deny in the PolicyLayer policy for json_yaml_convert. 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.

What MCP server provides json_yaml_convert? +

json_yaml_convert is provided by the Tools MCP server (https://www.jiebang.site/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.