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Agent harness for openrouter provisioned open weights models in the glas-harness framework of helix-forge.
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tegwick 4ee612140b Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 
Implements T01-T04:
- tools.py: green-commit-only-equivalent tool surface (read/write/edit/
  glob/grep + git status/diff/log/add+commit), path-traversal guarded.
- openrouter_client.py: own minimal chat-completions client — llm-connect's
  OpenRouterAdapter takes a single prompt string and never surfaces
  tool_calls, so it can't drive a multi-turn tool-calling loop without a
  breaking change to its frozen Core ABC. llm-connect stays an optional
  dependency (pyproject.toml), not load-bearing.
- loop.py: plan -> tool call -> observe -> repeat, budget- and
  turn-bounded, tool errors reported back to the model instead of
  crashing the loop.
- credentials.py: own OpenBao AppRole/ambient-token acquisition, per
  glas-harness ADR-002 (Option B) — glas-harness does not broker this.
- runner.py/hub.py: commit-verified success criterion + State Hub
  progress/token reporting, mirroring rein-aharness's model.

26 tests, all mocked at the httpx/subprocess boundary — no real
OpenRouter or OpenBao calls made. T05 (Forgejo repo creation) stays
open, deferred to the operator.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-26 13:37:09 +02:00
examples Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00
src/rein_openweights Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00
tests Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00
workplans Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00
.gitignore Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00
INTENT.md Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00
pyproject.toml Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00
README.md Bootstrap rein-openweights: minimal agentic loop over OpenRouter (REIN-OW-WP-0001) 2026-07-26 13:37:09 +02:00

README.md

rein-openweights

An agentic tool-use harness that drives current open-weight models via OpenRouter, as an alternative to the frontier-model-vendor harnesses (Claude Code, Grok CLI, Codex/GPT CLI).

Part of the glas-harness "rein" family — see glas-harness ADR-001, ADR-002 (credential ownership), and this repo's workplans/REIN-OW-WP-0001.

Uses its own minimal OpenRouter client (src/rein_openweights/openrouter_client.py), not llm-connect's OpenRouterAdapter — that adapter's execute_prompt(prompt: str, config) takes a single prompt string and never surfaces message.tool_calls, so it can't drive a multi-turn tool-calling loop without a breaking change to llm-connect's frozen Core ABC. llm-connect stays an optional dependency (see pyproject.toml), not load-bearing for the base loop.

Not yet pushed to Forgejo — local scaffold only.

Usage

python3 -m venv .venv && source .venv/bin/activate
pip install -e .

# Credential: either export OPENROUTER_API_KEY directly, or set
# REIN_OPENWEIGHTS_APPROLE_DIR / REIN_OPENWEIGHTS_OPENROUTER_KV_PATH for
# OpenBao-based acquisition (see src/rein_openweights/credentials.py).
export OPENROUTER_API_KEY=sk-...

rein-openweights run --task-file examples/task-hello-sandbox.json --no-hub

Tests: python3 -m pytest tests/ -q (26 tests, no network/OpenBao calls — everything mocked at the httpx/bao subprocess boundary).