Write an attestation commitment (32-byte hash) to Base via the Hive gateway. Anchors the attestation only; does not bridge value or move state to Aleo. Aleo snarkVM consumes the attestation independently via Leo programs (future hive-leo-circuits repo). Cost: $0.02 USDC + L1 gas. Backend RFC-stag...
Part of the Hive Zk Attestation server.
Free to start. No card required.
AI agents use zk_anchor_to_base to create or modify resources in Hive Zk Attestation. 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 zk_anchor_to_base 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 Hive Zk Attestation.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"zk_anchor_to_base": {
"limits": [
{
"counter": "zk_anchor_to_base_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Hive Zk Attestation policy for all 8 tools.
These attack patterns abuse exactly the kind of access zk_anchor_to_base 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.
Write an attestation commitment (32-byte hash) to Base via the Hive gateway. Anchors the attestation only; does not bridge value or move state to Aleo. Aleo snarkVM consumes the attestation independently via Leo programs (future hive-leo-circuits repo). Cost: $0.02 USDC + L1 gas. Backend RFC-stage; returns backend_pending until rails land.. It is categorised as a Write tool in the Hive Zk Attestation MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Hive Zk Attestation MCP server in PolicyLayer and add a rule for zk_anchor_to_base: 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 Hive Zk Attestation. Nothing to install.
zk_anchor_to_base 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 zk_anchor_to_base 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 zk_anchor_to_base. 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.
zk_anchor_to_base is provided by the Hive Zk Attestation MCP server (https://hive-mcp-zk-attestation.onrender.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 8 Hive Zk Attestation tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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