Create a new project and connect this workspace to it. Pass 'brief_text' (product brief as text) to auto-extract ICPs, pain points, and value props as inferred entities (costs 5 credits). Or pass 'brief_path' (absolute file path) and the file will be read locally. Without a brief, the project is ...
Part of the Cantrip MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use cantrip_init to create or modify resources in Cantrip. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call cantrip_init repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Cantrip.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
tools:
cantrip_init:
rules:
- action: allow
rate_limit:
max: 30
window: 60See the full Cantrip policy for all 19 tools.
Agents calling write-class tools like cantrip_init have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
Create a new project and connect this workspace to it. Pass 'brief_text' (product brief as text) to auto-extract ICPs, pain points, and value props as inferred entities (costs 5 credits). Or pass 'brief_path' (absolute file path) and the file will be read locally. Without a brief, the project is created empty (free) and you add entities manually. Writes .cantrip.json automatically after creation. After creating a project, add a few entities and confirm them with the user before going deeper.. It is categorised as a Write tool in the Cantrip MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Add a rule in your Intercept YAML policy under the tools section for cantrip_init. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Cantrip MCP server.
cantrip_init 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 cantrip_init rule in your Intercept 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 Intercept policy for cantrip_init. 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.
cantrip_init is provided by the Cantrip MCP server (mcp-server-cantrip). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.