[rig-summarizer] Daily file summary — 2026-07-27

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Global Summary

Rig is a minimal TypeScript multi-agent harness providing declarative agent construction with typed input/output schemas, prompt intents, and sub-agent delegation. The repository includes a core runtime (skills/rig/rig.ts), alternative engine adapters (Anthropic, Codex, Gemini, Pi), a large suite of skill markdown samples, and vitest-based unit and integration tests.

Individual File Summaries

File	Summary
.github/skills/rig/addons.ts	Provides optional agent add-ons such as repair and steering, composable on top of the core runtime.
.github/skills/rig/engines/anthropic.ts	Implements an AgentFactory backed by the Anthropic SDK, bridging Rig tool calls to the betaTool helper.
.github/skills/rig/engines/codex.ts	Implements an AgentFactory using the OpenAI Codex SDK for thread-based invocations.
.github/skills/rig/engines/gemini.ts	Implements an AgentFactory for Gemini by spawning a child process over stdio.
.github/skills/rig/engines/pi.ts	Implements an AgentFactory using the Pi agent SDK with tool registration and model configuration.
.github/skills/rig/rig.ts	Mirror/older snapshot of the core Rig runtime.
scripts/haiku.integration.test.ts	Integration test spawning a real Rig process to verify end-to-end behaviour against the live Copilot API.
scripts/run-sample.test.ts	Vitest suite running all skill markdown samples with a stub Copilot SDK client.
skills/rig/engines/anthropic.ts	Current Anthropic engine adapter.
skills/rig/engines/codex.ts	Current Codex engine adapter.
skills/rig/engines/gemini.ts	Current Gemini engine adapter.
skills/rig/engines/pi.ts	Current Pi engine adapter.
skills/rig/rig.ts	Core Rig runtime (~2700 lines): exports agent, p, s, copilotEngine, configureAgent, runLauncherCli, covering schemas, prompt rendering, sub-agent delegation, and the CLI launcher.
src/engines/anthropic.test.ts	Unit tests for the Anthropic engine adapter using vitest mocks.
src/engines/codex.test.ts	Unit tests for the Codex engine adapter.
src/engines/copilot.test.ts	Unit tests for the Copilot SDK engine covering session creation, tool calls, and error handling.
src/engines/gemini.test.ts	Unit tests for the Gemini engine mocking child-process stdio streams.
src/engines/pi.test.ts	Unit tests for the Pi engine adapter.

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• expires on Aug 3, 2026, 3:27 PM UTC