Runs up to 100 ads.txt verifications in a single call — the endpoint an ad-buying agent uses for pre-bid checks across a whole campaign's supply. Each item is the same shape as sigil_verify_ads_txt. Per-item validation failures are reported inline; the batch never fails as a whole. Publisher reco...
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AI agents call sigil_verify_ads_txt_batch to retrieve information from TunnelMind Data API without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though sigil_verify_ads_txt_batch only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"sigil_verify_ads_txt_batch": {}
}
}See the full TunnelMind Data API policy for all 54 tools.
These attack patterns abuse exactly the kind of access sigil_verify_ads_txt_batch gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Runs up to 100 ads.txt verifications in a single call — the endpoint an ad-buying agent uses for pre-bid checks across a whole campaign's supply. Each item is the same shape as sigil_verify_ads_txt. Per-item validation failures are reported inline; the batch never fails as a whole. Publisher records are fetched once per unique domain. Use this tool when: - You are evaluating many supply paths at once (campaign setup, SPO sweep). - You want one round-trip instead of N calls to sigil_verify_ads_txt. Inputs: - items (body, required): Array of 1–100 verification requests, each { publisher_domain, exchange_domain, seller_id, seller_type? }. - resolve_chain (body, optional): Applies to every item — when true, a matched RESELLER entry is cross-checked against the exchange's sellers.json. Returns: - count: number of result entries (matches items length, in order). - verified_count: how many resolved to verified: true. - results: array aligned to items. Each entry is either a verification result with ok: true and input_index, or { ok: false, input_index, error, message } for an invalid item. Cost: - Counts as one request against the daily rate limit. Latency: - Typical: <150ms. With resolve_chain: true, add one sellers.json fetch per unique exchange (edge-cached 12h after the first fetch).. It is categorised as a Read tool in the TunnelMind Data API MCP Server, which means it retrieves data without modifying state.
Register the TunnelMind Data API MCP server in PolicyLayer and add a rule for sigil_verify_ads_txt_batch: 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_verify_ads_txt_batch 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 sigil_verify_ads_txt_batch 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_verify_ads_txt_batch. 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_verify_ads_txt_batch 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.
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