Generate ZK set membership proof \u2014 prove address belongs to a trusted set without revealing which address.
Part of the BTCFi API server.
Free to start. No card required.
AI agents use btcfi_zk_membership to create or modify resources in BTCFi API. 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 btcfi_zk_membership 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 BTCFi API.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"btcfi_zk_membership": {
"limits": [
{
"counter": "btcfi_zk_membership_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full BTCFi API policy for all 27 tools.
These attack patterns abuse exactly the kind of access btcfi_zk_membership 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.
Generate ZK set membership proof \u2014 prove address belongs to a trusted set without revealing which address.. It is categorised as a Write tool in the BTCFi API MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the BTCFi API MCP server in PolicyLayer and add a rule for btcfi_zk_membership: 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 BTCFi API. Nothing to install.
btcfi_zk_membership 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 btcfi_zk_membership 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 btcfi_zk_membership. 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.
btcfi_zk_membership is provided by the BTCFi API MCP server (@aiindigo/btcfi-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 27 BTCFi API tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.