feat: add agy runner and devkit_ask bridge tool#114
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Wire Claude, Codex, and agy (Google Antigravity CLI) into a direct,
commutative bridge instead of the parallel fan-out model.
- runners/agy.go: new AgyRunner (stdin-piped one-shot, mirrors CodexRunner)
with AGY_CMD / AGY_ARGS env overrides since agy's headless flags are not
yet verified. Registered in DetectRunners; added to --agent choices.
- mcp: new devkit_ask tool — {to: claude|codex|agy, prompt, workdir?} resolves
the peer via FindRunner and returns its answer synchronously, bounded by
commandTimeout. Any MCP host (Claude, Codex) can ask any peer and block for
the reply.
- Tests: agy_test.go (name, argv builder incl. AGY_ARGS/{workdir}, AGY_CMD,
Available) and ask_test.go (missing-arg, unknown-peer, unavailable-peer).
Note: agy's exact non-interactive argv is a documented TODO(agy) placeholder;
agy is reachable as a target now, and works once the argv is probed or AGY_ARGS
is set. agy-initiated calls depend on agy supporting MCP-client attach (TBD).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W7VdbGfPkkce5UGQqjeSE9
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What
Turns devkit into a direct, commutative bridge between the three AI CLIs — Claude, Codex, and agy (Google Antigravity) — instead of the parallel fan-out/consolidate model. Any MCP host can send a prompt to any peer and get its answer synchronously.
Changes
src/runners/agy.go(new):AgyRunner— a stdin-piped one-shot runner mirroringCodexRunner. Binary and argv are env-overridable viaAGY_CMD/AGY_ARGS(with a{workdir}token) since agy's headless flags aren't verified yet. Registered inDetectRunners; added to--agentchoices.devkit_askMCP tool (src/mcp/tools.go,src/mcp/server.go):{to: claude|codex|agy, prompt, workdir?}→ resolves the peer viaFindRunnerand returns its output synchronously, bounded bycommandTimeout. This is the commutative primitive.src/runners/agy_test.go(name, argv builder incl.AGY_ARGS/{workdir},AGY_CMD,Available) andsrc/mcp/ask_test.go(missing-arg, unknown-peer, unavailable-peer). Hermetic, matching the existing style.Verification
go build ./...,go vet ./..., andgo test ./...all pass. Builtdevkit-engine, booted it as an MCP server, and confirmed over JSON-RPC thatdevkit_askis advertised and its handler returns correctly (unknown peer,not available,missing argument).Follow-ups (need a host with agy installed)
TODO(agy): probeagy --help/agy exec --help/agy modelsto replace the placeholder argv (or setAGY_ARGS). agy is reachable as a target now; the exact invocation is a documented guess until probed.agy mcp --help). If not, agy is target-only and Claude/Codex broker for it; Claude↔Codex is already fully commutative.🤖 Generated with Claude Code