AI agents call dev_add_agent_signup to retrieve information from Tru without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
service_name | string | — | The service_name of the app. If omitted, uses the app from ~/.tru/config.json (set by dev_register_app). |
Parameters from the server's own tool schema.
This tool retrieves/returns an HTML snippet for embedding on a login page. It is a read-only operation with no side effects — it does not create accounts, modify data, or execute any actions. The result is informational content (an HTML snippet) for the developer to use.
From the tool's definition Returns the agent signup HTML snippet
Attacks that exploit this kind of access
Returns the agent signup HTML snippet for the developer's app. The snippet is a single line that goes on the app's login page. It is categorised as a Read tool in the Tru MCP Server, which means it retrieves data without modifying state.
dev_add_agent_signup accepts 1 parameter: service_name. The full parameter table on this page comes from the server's own tool schema.
Register the Tru MCP server in PolicyLayer and add a rule for dev_add_agent_signup: 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 Tru. Nothing to install.
dev_add_agent_signup is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the dev_add_agent_signup 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 dev_add_agent_signup. 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.
dev_add_agent_signup is provided by the Tru MCP server (tru-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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