Appends an amendment entry to CONSTITUTION.md
AI agents use sdd_amend to create or update resources in Specky — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Specky environment.
The tool modifies an existing file (CONSTITUTION.md) by appending data to it. This is a reversible write operation—amendments can be edited or removed without permanent data loss. While it affects documentation that may guide project decisions, it does not execute code, delete data irreversibly, or trigger external operations. The 'append' operation is characteristic of Write category tools.
From the tool's definition Appends an amendment entry to CONSTITUTION.md
Documented attack patterns abuse exactly the kind of access sdd_amend gives an agent:
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_amend:
{
"version": "1",
"default": "deny",
"tools": {
"sdd_amend": {
"limits": [
{
"counter": "sdd_amend_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}sdd_amend 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.
Free to start. No card required.
Appends an amendment entry to CONSTITUTION.md. 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.
Register the Specky MCP server in PolicyLayer and add a rule for sdd_amend: 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.
sdd_amend is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the sdd_amend 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 sdd_amend. 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.
sdd_amend 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.
Start from Specky, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
56 Specky tools catalogued and risk-classified — across an index of 43,000+ MCP servers.