Assembles the ATAP v0.1 §7.5 Receipt ZIP for an AIT — the signed Receipt (manifest.json), the AIT, the Attestation Block chain, the witness public key, a tier-graded summary.json, the bundled verify.sh reference verifier, and the witness events + sigil_tokens as profile artifacts. Any pending eve...
Risk signalsBulk/mass operation — affects multiple targets
Part of the TunnelMind Data API server.
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AI agents use sigil_receipt_generate to create or modify resources in TunnelMind Data 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 sigil_receipt_generate 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 TunnelMind Data API.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"sigil_receipt_generate": {
"limits": [
{
"counter": "sigil_receipt_generate_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full TunnelMind Data API policy for all 54 tools.
These attack patterns abuse exactly the kind of access sigil_receipt_generate 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.
Assembles the ATAP v0.1 §7.5 Receipt ZIP for an AIT — the signed Receipt (manifest.json), the AIT, the Attestation Block chain, the witness public key, a tier-graded summary.json, the bundled verify.sh reference verifier, and the witness events + sigil_tokens as profile artifacts. Any pending events are rolled into a final block first. The ZIP verifies offline — unpack it and run verify.sh; keys are at https://tunnelmind.ai/atap/keys. The summary grades every event as witnessed, anchored, or asserted and reports the anchored-bid coverage ratio.. It is categorised as a Write tool in the TunnelMind Data API MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the TunnelMind Data API MCP server in PolicyLayer and add a rule for sigil_receipt_generate: 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 TunnelMind Data API. Nothing to install.
sigil_receipt_generate 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 sigil_receipt_generate 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 sigil_receipt_generate. 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.
sigil_receipt_generate is provided by the TunnelMind Data API MCP server (https://mcp-data.tunnelmind.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 54 TunnelMind Data API tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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