Create Quote Create a Lightning invoice to fund ecash minting (NUT-04). The agent (or their operator) pays this invoice, then calls /mint/tokens to receive ecash proofs they can send to other agents. Responses: 200: Successful Response (Success Response) Content-Type: application/json
Part of the Agent Registry server.
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AI agents use create_quote_api_payments_ecash_mint_quote_post to create or modify resources in Agent Registry. 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 create_quote_api_payments_ecash_mint_quote_post repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Agent Registry.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"create_quote_api_payments_ecash_mint_quote_post": {
"limits": [
{
"counter": "create_quote_api_payments_ecash_mint_quote_post_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Agent Registry policy for all 36 tools.
These attack patterns abuse exactly the kind of access create_quote_api_payments_ecash_mint_quote_post gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Create Quote Create a Lightning invoice to fund ecash minting (NUT-04). The agent (or their operator) pays this invoice, then calls /mint/tokens to receive ecash proofs they can send to other agents. Responses: 200: Successful Response (Success Response) Content-Type: application/json. It is categorised as a Write tool in the Agent Registry MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Agent Registry MCP server in PolicyLayer and add a rule for create_quote_api_payments_ecash_mint_quote_post: 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 Agent Registry. Nothing to install.
create_quote_api_payments_ecash_mint_quote_post 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 create_quote_api_payments_ecash_mint_quote_post 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 create_quote_api_payments_ecash_mint_quote_post. 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.
create_quote_api_payments_ecash_mint_quote_post is provided by the Agent Registry MCP server (agentry/agent-registry). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 36 Agent Registry tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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