UACOS

UACOS is a local-first reliability, context, and safety runtime for AI coding agents.

UACOS is not a Goose clone or general chat/coding agent. External agents propose changes. UACOS prepares bounded context, validates semantic scope/risk, enforces policy and approval, applies changes through guarded transactions, runs verification, retries bounded failures, and records durable evidence.

Start here

• Documentation Index

• Current Status

• Production Improvement Checklist

• Final Closure Checklist

• Strategic Status

• Language Policy

Related MCP server: LAIN-mcp

Requirements

• Python 3.9+

• Optional: Ollama for local real-model evaluation

• Optional: Codex CLI, Claude Code, or Goose for real-provider E2E; availability is never assumed

Three-step workflow

1. Initialize and inspect

python -m pip install -e .
uacos-flow setup --repo . --task "fix login bug safely"
uacos-flow doctor --repo .

2. Build bounded context

uacos-flow assist --repo . --task "fix login bug safely" --max-tokens 6000

3. Guard and apply verified changes

uacos-flow guard \
  --repo . \
  --patch change.diff \
  --task "fix login bug safely" \
  --allowed-file app/auth.py \
  --test "pytest -q"

uacos-flow apply-safe \
  --repo . \
  --patch change.diff \
  --allowed-file app/auth.py \
  --test "pytest -q" \
  --yes

Existing uacos ... commands remain available for lower-level and backward-compatible workflows.

Core capabilities

• Multi-language semantic graph: Python, JavaScript/TypeScript, Rust, Go, Java, C, and C++.

• Canonical symbols, cross-file imports, calls, inheritance/interfaces, route/service/data relationships, and test/source relationships.

• Evidence-weighted context selection with symbol/subgraph slicing and dynamic budgets.

• Durable agent runtime with resume, retry policy, no-progress detection, cancellation/deadlines, and replay.

• Semantic diff risk, stale-patch preconditions, YAML policy, patch-bound human approval, guarded apply/test/rollback, and rollback verification.

• Real HTTP JSON-RPC MCP client with timeout/payload bounds, pagination guards, request-id validation, and localhost network E2E.

• Evidence-first real-agent E2E runner for Codex CLI, Claude Code, and Goose when explicitly installed/configured.

• Comparative ground-truth benchmark evaluator for full_repo vs grep vs uacos.

• Machine-checkable final closure gate that keeps implementation readiness separate from real-provider and benchmark evidence.

Useful commands

uacos-flow list
uacos-flow status --repo .
uacos-flow prepare --repo . --summary
uacos-flow orchestrate --spec "upgrade safely until tests pass" --agent goose --test "pytest -q" --max-iterations 3
uacos-flow benchmark --repo . --manifest evals/benchmark_suite.json
python scripts/provider_readiness.py
python scripts/final_closure_check.py --repo .

Evidence and claims

The repository separates implementation tests from real-world evidence.

A fixture, mock, binary probe, or localhost contract test must not be presented as a successful real-provider run. Real Agent E2E is complete only when an installed/configured provider actually executes and its archived evidence reports status=passed.

Comparative benchmark claims require real observations using the same provider/model for all comparison modes, at least three repeats per task/mode, and explicit ground truth.

Safe baseline claim:

UACOS reduces unnecessary repository context sent to AI coding agents by selecting task-relevant files and validates candidate changes through local reliability and safety gates.

Do not claim 80-90% or 99% token savings unless an archived benchmark directly supports the exact statement.

Evidence outputs

Depending on the workflow, UACOS writes evidence including:

• reports/uacos_performance_report.json

• reports/uacos_benchmark_suite_report.json

• reports/release_gate_report.json

• reports/provider_readiness.json

• reports/real-agent-e2e/summary.json

• reports/comparative_ground_truth_benchmark.json

• reports/final_closure_report.json

• .uacos/real_agent_e2e/

• .uacos/run_state/

• .uacos/replay/

• .uacos/patch_lifecycle/latest_patch_lifecycle_report.json

Product proof package

Use these before publishing claims or customer-facing material:

• Claim Wording Guide

• Public Benchmark Report Template

• Case Study Template

• Agent Comparison Matrix

Community listing

UACOS is listed in awesome-cli-coding-agents under Agent infrastructure. This is a community-maintained project listing, not a certification or vendor endorsement.

Documentation

Use docs/README.md as the main documentation index.