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Claude Code hooks and docs, developers share agent workflows

techJul 2, 202621281

Developers are using Claude Code's official hooks reference to build verifier-driven agent workflows aimed at reducing hallucinations. Several users describe a PreToolUse hook that runs a verifier subagent to fact-check all claims and statistics before writing a document, plus a Stop hook that triggers the same verifier for standalone responses over 100 words. The hooks reference in the Claude Code docs documents events, configuration schema, JSON input/output formats, exit codes, async and HTTP hooks, and prompt hooks that make these verifier patterns possible. Users also report agentic patterns such as launching multiple background agents for review tasks, timed prompts that assume an AFK user when unanswered, and loops that iteratively modify agent outputs. Some posts raise broader tooling concerns: Fable and Opus verification limits, token burn and API billing changing hobbyist use, and a Register article notes Anthropic plans to remove hidden codes it added to Claude Code to detect copying by other AI services. Developers say the hooks let them automate pre-tool verification and multi-agent audits, while remaining attentive to rate limits, timeouts, and verification design.

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