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Agent402 UK Text Firewall
x402
Agent402 UK Text Firewall is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Scans or redacts PII and secrets from text (logs, prompts, tool I/O) and returns a go/no-go allow flag with findings count
Price / call$0.001
Success—
StatusUnknown
How this service works
Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.
Output
A JSON object with: `allow` (boolean go/no-go), `valid` (boolean), `redacted` (text with sensitive spans replaced by the redaction token), and `finding_count` (integer number of detected items). In scan mode the original text is not altered; in redact mode the redacted field contains the cleaned text.
Example use cases
Safe LLM prompt forwarding
“Scan this user message for any email addresses, phone numbers, or API keys before you include it in the next LLM prompt — if anything is found, redact it with [REDACTED] and tell me how many findings there were.”
Agent log sanitisation before storage
“I'm about to write this agent execution log to our database — run it through the text firewall in redact mode covering both PII and secrets, and only proceed if the allow flag comes back true.”
Go/no-go check on outbound webhook payload
“Check this webhook payload for any sensitive data before we post it to the third-party endpoint — scan mode, block on secrets, and give me the allow decision and finding count.”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/jobs/text-firewallWhen to prefer
Choose this endpoint when you need a fast, cheap, deterministic PII/secrets scan without spending LLM tokens on the task — ideal as a pre-flight check before logging, forwarding, or storing any agent-generated or user-supplied text. Prefer it over LLM-based redaction for cost and consistency; it costs $0.001 USDC per call, requires no API key, and returns a structured allow flag usable in conditional workflow logic.
Side effects
- Text exceeds 100,000 character limit — request rejected
- Invalid mode value (not 'scan' or 'redact') — validation error returned
- Malformed JSON body — 400 error
- Payment not received or USDC balance insufficient on x402 — 402 Payment Required
- Network timeout on large payloads
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mode | string | scan | redact |
| text | string | Log, prompt, or tool I/O (max 100k chars) |
| block | array | Kinds that force allow=false |
| include | array | secret and/or pii (default both) |
| replacement | string | Redaction token, default [REDACTED] |
Output
Schema · Response
{
"type": "json",
"example": {
"allow": true,
"valid": true,
"redacted": "contact [REDACTED]:email — do not paste keys",
"finding_count": 1
}
}Tags
x402
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