AI agents invoke format_c_code to trigger actions in Allcanuse. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Based on the tool name, it likely runs a code formatter (e.g., clang-format) on C code files, which constitutes executing an external process. It may also modify files in place (Write). With no description, confidence is low. Given the server context of 'command execution' and 'file editing', formatting likely involves both execution and writing. Choosing Execute as the more severe applicable category.
From the tool's definition Tool name 'format_c_code' suggests it formats C source code; description is empty and uninformative.
Documented attack patterns abuse exactly the kind of access format_c_code gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Allcanuse, and nothing reaches the server without passing your rules. This is the rule we recommend for format_c_code:
{
"version": "1",
"default": "deny",
"tools": {
"format_c_code": {
"limits": [
{
"counter": "format_c_code_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}format_c_code stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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format_c_code. It is categorised as a Execute tool in the Allcanuse MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Allcanuse MCP server in PolicyLayer and add a rule for format_c_code: 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 Allcanuse. Nothing to install.
format_c_code is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the format_c_code 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 format_c_code. 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.
format_c_code is provided by the Allcanuse MCP server (ra1nyxin/allcanuse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Allcanuse, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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130 Allcanuse tools catalogued and risk-classified — across an index of 43,000+ MCP servers.