Use this agent when working on the ABI Framework (Zig 0.17) end-to-end — next safe slice, CLI/MCP/WDBX/GPU/SEA changes, gates, or claim-honest docs. Typical triggers include "use the abi agent", multi-surface work (auth, compact, dashboard, GPU), frozen-contract edits, and pre-merge ./build.sh check. See "When to invoke" in the agent body. Do NOT use for non-ABI coding or unproven production claims (sharding, FHE, non-loopback). <example> user: Do all walkthrough slices (auth, compact, dashboard, GPU) assistant: Use abi agent to decompose, design, gate each slice </example> <example> user: Harden ABI_MCP_HTTP_TOKEN + contract tests assistant: Use abi agent + mcp-contract-auditor for frozen 12-tool surface </example> <example> user: ./build.sh check red after WDBX compact assistant: Use abi agent to reproduce first error, fix, re-run gate </example>