[rig-summarizer] Daily file summary — 2026-07-25

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Global Summary

Rig is a minimal TypeScript multi-agent harness that provides declarative agent construction with typed input/output schemas, prompt intents, and pluggable engine backends (Copilot, Anthropic, Gemini, Codex, Pi). The repository includes the core runtime (skills/rig/rig.ts), multiple engine adapters, an addon system for repair/steering/timeout, 50+ sample agents, and a comprehensive vitest test suite.

Individual File Summaries

File	Summary
./.github/skills/rig/addons.ts	Defines agent addons including repair (re-prompts on parse/validation failure) and steering (warns when turn limit is near); mirrors skills/rig/addons.ts for the GitHub Actions context.
./.github/skills/rig/engines/anthropic.ts	Implements the Anthropic engine adapter using the Anthropic SDK, translating rig tool-call protocol to Anthropic API requests and responses.
./.github/skills/rig/engines/codex.ts	Implements the Codex engine adapter using the OpenAI Codex SDK, enabling rig agents to run on Codex-backed models.
./.github/skills/rig/engines/gemini.ts	Implements the Gemini engine adapter by spawning a child process and communicating over stdio using randomized session UUIDs.
./.github/skills/rig/engines/pi.ts	Implements the Pi engine adapter using the Pi Agent Core SDK, exposing Pi-backed models to rig agents with typed tool support.
./.github/skills/rig/rig.ts	The core rig runtime: exports agent, configureAgent, copilotEngine, p, and s; manages schema validation, prompt intent resolution, sub-agent delegation, and Copilot SDK session lifecycle.
./scripts/haiku.integration.test.ts	Integration test that spawns the rig launcher as a child process and verifies end-to-end agent execution against the Haiku model.
./scripts/run-sample.test.ts	Sample runner that imports each sample agent under a stub Copilot SDK client, generates schema-conforming output, and asserts completion within 5 seconds.
./skills/rig/addons.ts	Source-of-truth addon module exporting repair, steering, timeout, and oncePerAgent composable agent decorators.
./skills/rig/engines/anthropic.ts	Source-of-truth Anthropic engine implementation; wraps the Anthropic client to provide AgentFactory-compatible sessions with tool-call round-trips.
./skills/rig/engines/codex.ts	Source-of-truth Codex engine implementation; exposes OpenAI Codex thread-based sessions as a rig AgentFactory.
./skills/rig/engines/gemini.ts	Source-of-truth Gemini engine implementation; spawns and manages a Gemini subprocess, routing tool calls via stdio JSON protocol.
./skills/rig/engines/pi.ts	Source-of-truth Pi engine implementation using @earendil-works/pi-agent-core; maps Pi model types and tools to the rig AgentFactory interface.
./skills/rig/rig.ts	Canonical rig runtime source (~2500 lines): schema helpers (s.*), prompt intent builders (p.*), agent factory, launcher CLI, Copilot engine, and all validation/repair logic.
./src/addons.ts	Re-export barrel for the addons module, forwarding all exports from skills/rig/addons.ts into the src/ alias path.
./src/engines/anthropic.test.ts	Unit tests for the Anthropic engine adapter, mocking the SDK client and verifying tool-call handling and session lifecycle.
./src/engines/codex.test.ts	Unit tests for the Codex engine adapter, verifying thread creation, tool-call dispatch, and response parsing.
./src/engines/copilot.test.ts	Unit tests for the Copilot engine, mocking @github/copilot-sdk and asserting session creation, sendAndWait calls, and disconnect behavior.
./src/engines/gemini.test.ts	Unit tests for the Gemini engine, using EventEmitter and PassThrough streams to simulate subprocess stdio and validate JSON protocol handling.
./src/engines/pi.test.ts	Unit tests for the Pi engine adapter, mocking Pi Agent Core and verifying prompt dispatch, tool execution, and abort handling.

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• expires on Aug 1, 2026, 2:57 PM UTC