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Developer warns AI agents can silently post to wrong accounts with no error raised

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A developer building an AI-powered social media publishing tool discovered that once an agent has write access, failures become nearly invisible rather than loudly obvious. The agent posted content to the wrong social account because the language model generated a plausible-looking but incorrect platform ID, and the API executed the request without complaint. Similar silent failures emerged with timezone mismatches and media-less posts queued for platforms like Instagram that require attachments, with errors only surfacing at publish time. To reduce risk, the developer now enforces a rule requiring agents to call a list_connections function first and copy platform IDs verbatim, never guessing them. The post also highlights MCP tool annotations such as destructiveHint as a low-effort way for servers to signal to clients which actions warrant a confirmation step before execution.

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Developer warns AI agents can silently post to wrong accounts with no error raised · ShortSingh