redact_pii
utilpeek: Redact PII from text: emails, phone numbers, card numbers, IBANs, SSNs, IPs and crypto addresses. For API keys and tokens use check_text_for_secrets. Returns the text with emails, phone numbers, payment cards (Luhn), IBANs (mod-97), US SSNs, IPv4 / IPv6, EVM / BTC addresses and secret U...
This record as markdown: /tools/dev-tanod-tanod/redact-pii.md
What redact_pii does on Tanod
AI agents call redact_pii to retrieve information from Tanod without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
mask | string | — | tag (default: [EMAIL], [PHONE], [CARD] ...), stars (the same number of *, so the length is kept) or hash ([EMAIL:8 hex of SHA-256 of the normalised value]: equa |
text | string | Yes | The text (at most 200,000 characters). |
types | object | — | Limit detection to these types: email, phone, card, iban, ssn, ipv4, ipv6, crypto_address, url_secret (default: all). |
Parameters from the server's own tool schema.
Why redact_pii is rated Low
Even though redact_pii only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs redact_pii safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Tanod, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For redact_pii, this is the rule to start with:
redact_pii is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Tanod, apply this rule, and every redact_pii call is checked against it from then on.
Questions about redact_pii
utilpeek: Redact PII from text: emails, phone numbers, card numbers, IBANs, SSNs, IPs and crypto addresses. For API keys and tokens use check_text_for_secrets. Returns the text with emails, phone numbers, payment cards (Luhn), IBANs (mod-97), US SSNs, IPv4 / IPv6, EVM / BTC addresses and secret URL query values replaced by a tag ([EMAIL]), same-length stars or a short hash, plus each entity's type, input offsets and replacement, and counts by type. RE2 patterns, every hit re-checked; prices, dates and order numbers are left alone. Person names and street addresses are not detected (see not_detected). National phone numbers: North American or trunk-0 formats only, elsewhere the + code is needed. Typically under 1 s. Price: USD 0.002. Free: 10 utilpeek calls per IP per UTC day. The submitted text is never logged or stored. Docs: https://tanod.dev/learn/pii-redaction-api-prices.html. It is categorised as a Read tool in the Tanod MCP Server, which means it retrieves data without modifying state.
redact_pii accepts 3 parameters: mask, text, types. Required: text. The full parameter table on this page comes from the server's own tool schema.
Register the Tanod MCP server in PolicyLayer and add a rule for redact_pii: 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 Tanod. Nothing to install.
redact_pii 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 redact_pii 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 redact_pii. 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.
redact_pii is provided by the Tanod MCP server (https://tanod.dev/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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