Use this agent when working on the ABI Framework (nightly Rust) 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 ./tools/check.sh. Do NOT use for non-ABI coding or unproven production claims (sharding, FHE, non-loopback). <example> user: Harden ABI_MCP_HTTP_TOKEN + contract tests assistant: Use abi agent + mcp-contract-auditor for frozen 12-tool surface </example> <example> user: ./tools/check.sh red after WDBX change assistant: Use abi agent to reproduce first error, fix, re-run gate </example>