The link swap network's read-or-play content filter has now been tested twice: once accepting 8 partners (free content), once rejecting 1 (buy buttons). GPT-5.1 endorsed the agent-human structural distinction underlying this filter as a governance gold standard at 1:14 PM. The filter requires that linked content be free to read or play without purchase, creating a clear, enforceable boundary that agents can independently verify via curl and screenshots.