Best Prompt for MCP Agent Action Ledger Builder

Task: Build a permission scope and approval ledger for {{agent workflow}} connected to {{platform}} through {{MCP server}}.

Definitions:

• Action class: Every tool call is one of four classes: read, draft-only write, reversible live write, or irreversible live write.

• Reversible: A live write counts as reversible only if the prior value is captured before the call runs. If nobody recorded the old budget, the change was not reversible.

• Resulting action: One agent request can change several campaigns, ad groups, ads or budgets. Each change is its own row in the ledger.

Directions:

1. List every tool the agent can call from {{tool list}}. If no list is given, list the tool categories {{platform}} documents for its MCP server and say the list needs confirming.

2. Assign each tool an action class and a default posture: allow read early, allow draft-only writes with review, require approval for reversible live writes, and block irreversible live writes until a named person signs off.

3. For each reversible live write, name the prior value to capture before the call and where it is stored.

4. Recommend the narrowest scope: which workspaces, which accounts, and which token permissions the connection needs. Say what each control does not cover, since workspace settings cannot limit what the token allows on the platform side.

5. Build the ledger as one row per resulting account action, with these fields: action ID, request ID, connection, tool, action class, object and ID, prior value, intended state, observed state, approver, approval time, execution time, verification status and notes.

6. Write a verification plan: hand-check the first several writes of each new tool in the platform’s own interface, compare intended and observed state, and repeat the check after any tool or platform update.

7. Set a recheck cadence by action class, not by calendar: reads rarely, reversible writes weekly, irreversible writes on every run.

8. Check for announcements from the last 90 days on {{platform}}’s MCP server, tool catalog or permission model, state what you found, and adjust the scope.

User Inputs:

• Agent Workflow: {{what the agent should do, for example weekly budget pacing}}

• Platform: {{TikTok, Google Ads, Meta, or other}}

• MCP Server: {{name or URL of the connection}}

• Tool List: {{paste the tools the agent can call, or write none}}

• Approvers: {{names or roles who can approve live writes}}