sdd_turnkey_spec

THE RISK

Medium Risk

Why sdd_turnkey_spec needs a policy

This tool creates new structured data (EARS specifications and artifacts) that can be stored and used downstream. While it doesn't delete or execute external code, it does modify the project's specification baseline through generation and creation of artifacts. The reversible nature of specification creation (specs can be amended via sdd_amend) places this in Write rather than Execute.

From the tool's definition Tool description states it 'Generates a complete EARS specification', indicating it creates structured artifacts (specifications, requirements).

Documented attack patterns abuse exactly the kind of access sdd_turnkey_spec gives an agent:

POLICY

How to control sdd_turnkey_spec

PolicyLayer is an MCP gateway — it sits between your AI agents and Specky, and nothing reaches the server without passing your rules. This is the rule we recommend for sdd_turnkey_spec:

policy.json

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

sdd_turnkey_spec 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.

Create a free account and register Specky — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More Specky tools

Execute sdd_validate_iac Generates a validation payload for Terraform MCP (plan/validate) or Azure MCP (template va Execute sdd_advance_phase Validates that the current phase Execute sdd_setup_local_env Detects the project tech stack and generates a Docker-based local development environment Write sdd_run_analysis Reads all spec files, generates ANALYSIS.md with traceability matrix and coverage report, Write sdd_auto_pipeline FULLY AUTOMATED: Reads a meeting transcript, extracts requirements, and runs the complete Write sdd_compliance_check Validates specification and design against a compliance framework (HIPAA, SOC2, GDPR, PCI- Write sdd_cross_analyze Cross-artifact consistency analysis: checks alignment between SPECIFICATION.md, DESIGN.md, Write sdd_verify_tasks Reads TASKS.md and checks code_paths for implementation evidence. Detects phantom completi

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about sdd_turnkey_spec

What does the sdd_turnkey_spec tool do? +

Generates a complete EARS specification from a natural language feature description. It is categorised as a Write tool in the Specky MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sdd_turnkey_spec? +

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

What risk level is sdd_turnkey_spec? +

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

Can I rate-limit sdd_turnkey_spec? +

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

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

sdd_turnkey_spec is provided by the Specky MCP server (paulasilvatech/specky). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Specky tool call.

Start from Specky, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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