fail_dev_task · Tickr MCP: Risk & Policy

WHAT IT DOES

What fail_dev_task does on Tickr

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

PARAMETERS

Parameter	Type	Required	Description
`reason`	string	Yes	Reason why the task failed
`assignment_id`	string	Yes	UUID of the dev agent assignment

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why fail_dev_task needs a policy

This tool modifies task status in the project management system by marking it as failed, which is a reversible change (the task status could be updated again). It does not delete data (Destructive), execute arbitrary code (Execute), move money (Financial), or merely read data (Read). The modification is reversible, so Write is the appropriate category.

From the tool's definition Tool name 'fail_dev_task' and description 'Mark a dev agent task as failed with a reason' indicate state modification of a task record.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fail_dev_task Rate-limited

fail_dev_task 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": {
    "fail_dev_task": {
      "limits": [
        {
          "counter": "fail_dev_task_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 Tickr, so you can run agents against it safely.

FAQ

Questions about fail_dev_task

What does the fail_dev_task tool do? +

Mark a dev agent task as failed with a reason. It is categorised as a Write tool in the Tickr MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does fail_dev_task accept? +

fail_dev_task accepts 2 parameters: reason, assignment_id. Required: reason, assignment_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on fail_dev_task? +

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

What risk level is fail_dev_task? +

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

Can I rate-limit fail_dev_task? +

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

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

fail_dev_task is provided by the Tickr MCP server (@k-system/tickr-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.