save_playbook
Save a reusable PLAYBOOK — the strategy takeaways worth re-running: the hooks that work, the angles, the formats, and the concrete plays. Use it to keep what a competitor_teardown or mine_angles just found, or to bank a creative you want to repeat. Lands in the same Playbooks library the web app ...
This record as markdown: /tools/hermoso/save-playbook.md
What save_playbook does on Hermoso
AI agents use save_playbook to create or update resources in Hermoso, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Hermoso environment.
Why save_playbook is rated Medium
An AI agent can call save_playbook faster than any human can review: one bad instruction and it creates or modifies resources in Hermoso by the hundred, each call as confident as the last.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs save_playbook safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For save_playbook, this is the rule to start with:
save_playbook 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every save_playbook call is checked against it from then on.
Questions about save_playbook
Save a reusable PLAYBOOK — the strategy takeaways worth re-running: the hooks that work, the angles, the formats, and the concrete plays. Use it to keep what a competitor_teardown or mine_angles just found, or to bank a creative you want to repeat. Lands in the same Playbooks library the web app lists, runs and manages. Distinct from save_skill (a directive applied to every ad) and from the swipefile (raw saved creative). Free. It is categorised as a Write tool in the Hermoso MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Hermoso MCP server in PolicyLayer and add a rule for save_playbook: 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 Hermoso. Nothing to install.
save_playbook 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 save_playbook 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 save_playbook. 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.
save_playbook is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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