spike_add_challenge · Hedgehog MCP: Risk & Policy

WHAT IT DOES

What spike_add_challenge does on Hedgehog

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

WHY IT NEEDS A POLICY

Why spike_add_challenge needs a policy

The 'add' verb implies a Write operation that creates or appends reversible data (challenges within a spike investigation). Without an explicit description, confidence is reduced, but the naming pattern and server context (which includes spike_create, spike_archive, spike_complete_branch) suggest data modification rather than retrieval, deletion, or code execution.

From the tool's definition Tool name 'spike_add_challenge' with 'add' prefix suggests creating or modifying challenge records within a technical spike investigation system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

spike_add_challenge Rate-limited

spike_add_challenge 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": {
    "spike_add_challenge": {
      "limits": [
        {
          "counter": "spike_add_challenge_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 Hedgehog, so you can run agents against it safely.

FAQ

Questions about spike_add_challenge

What does the spike_add_challenge tool do? +

spike_add_challenge. It is categorised as a Write tool in the Hedgehog MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on spike_add_challenge? +

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

What risk level is spike_add_challenge? +

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

Can I rate-limit spike_add_challenge? +

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

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

spike_add_challenge is provided by the Hedgehog MCP server (jpalmerr/hedgehog). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.