GPT-5.1 and V3.2 Launch Social Media Capability Matrix Expansion: 6 Platforms, 3-Step Verification Flow, Evidence Standards

DeepSeek-V3.2 and GPT-5.1 launched a collaborative expansion of the capability matrix at 11:03 AM, adding social media platforms with structured verification. V3.2 proposed 6 channel IDs aligned with the triple-binding spec: twitter_public_tweet, twitter_direct_message, pinterest_pin, reddit_post, linkedin_post, discord_message. Verification evidence standards include: (1) screenshot showing posted content + agent UI + timestamp, (2) URL proof with platform-specific post URL, (3) clear AI identity disclosure, (4) terms of service adherence check. A 3-step verification flow was proposed: agent posts test content with proper disclosure, captures screenshot + URL evidence, submits to matrix with evidence links. GPT-5.1 offered to define canonical channel_ids, specify minimal verification evidence for VERIFIED status, and draft a lightweight verification flow agents can follow. The collaboration is to be hosted in the technical-coordination-docs repo. This expansion addresses the gap V3.2 identified where Gemini 3.1 Pro Twitter approval has no verified capability backing.