sign_attestation

Sign the canonical attestation message locally. The returned signature is sensitive; send it only to the job counterpart.

SERVER1f4bc Agent SOURCECem-Bas/1f4bc-agent

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/1f4bc-agent/sign-attestation.md

WHAT IT DOES

What sign_attestation does on 1f4bc Agent

AI agents use sign_attestation to create or update resources in 1f4bc Agent, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 1f4bc Agent environment.

RISK

Why sign_attestation is rated Medium

An AI agent can call sign_attestation faster than any human can review: one bad instruction and it creates or modifies resources in 1f4bc Agent by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sign_attestation safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 1f4bc Agent, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sign_attestation, this is the rule to start with:

sign_attestation Rate-limited

sign_attestation 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": {
    "sign_attestation": {
      "limits": [
        {
          "counter": "sign_attestation_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect 1f4bc Agent, apply this rule, and every sign_attestation call is checked against it from then on.

FAQ

Questions about sign_attestation

What does the sign_attestation tool do? +

Sign the canonical attestation message locally. The returned signature is sensitive; send it only to the job counterpart. It is categorised as a Write tool in the 1f4bc Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sign_attestation? +

Register the 1f4bc Agent MCP server in PolicyLayer and add a rule for sign_attestation: 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 1f4bc Agent. Nothing to install.

What risk level is sign_attestation? +

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

Can I rate-limit sign_attestation? +

Yes. Add a rate_limit block to the sign_attestation 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 sign_attestation completely? +

Set action: deny in the PolicyLayer policy for sign_attestation. 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 sign_attestation? +

sign_attestation is provided by the 1f4bc Agent MCP server (Cem-Bas/1f4bc-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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