drew 976817fa22 feat(controller): Phase 1d-1 — state machine + reaper + pickup guard
The deterministic spine of the master controller. State machine is
pure data with 6 load-bearing invariants enforced via property tests.
Reaper resets stale-heartbeat workflow_attempts to pending. Pickup
guard transitions workflows to STUCK when an attempt has been
re-pended too many times without success.

tools/controller/state_machine.py:

- KNOWN_STATES = 12; TERMINAL_STATES = {MERGED, ABANDONED, STUCK,
  CREATED_PR}. STUCK's only allowed exit is the operator-driven
  operator_unstick event (back to DISCOVERED).
- 32 TRANSITIONS entries covering DISCOVERED → ANALYZING →
  IMPLEMENTING ↔ AWAITING_CI / CONFLICT_RESOLVING / ESCALATING →
  REVIEWING → MERGING → MERGED. Plus pickup_exhausted exits from
  IMPLEMENTING/CONFLICT_RESOLVING/REVIEWING.
- 27 named events with descriptions. apply_event() lookup raises
  IllegalTransitionError (lists legal events from current state)
  or ValueError on unknown state (per v6 unknown-state guard).
- 6 LOAD-BEARING invariants for v1 (per v9 simplification):
  1. no_path_implementing_to_reviewing_skips_ci (Hard Rule #1
     constructional fix for the no-mans-land race)
  2. terminal_states_have_no_exits (only STUCK→operator_unstick OK)
  3. tier_monotonic_non_decreasing
  4. every_pr_workflow_includes_reviewing
  5. conflict_resolving_bounded (1st→IMPLEMENTING, 2nd→ESCALATING,
     3rd→STUCK; structurally encoded)
  6. escalation_deterministic
- reachable_from() honors cycles (DISCOVERED ∈ reachable(DISCOVERED)
  via STUCK→operator_unstick path; AWAITING_CI self-loops via
  ci_flake_retry).

tools/controller/reaper.py:

- reap_stale_attempts(): SELECT in_progress attempts whose
  lock_heartbeat_at + lock_ttl_seconds < NOW (per-row TTL respects
  per-role differences — estimator 180s, reviewer 720s, tier-2
  implementer 2160s). UPDATEs status='pending', clears lock columns,
  preserves pickup_count (the pickup guard handles that). Inserts
  controller_events row with reason='lock-ttl-expired' per reap.
- Dialect-portable: Postgres uses interval arithmetic; SQLite uses
  julianday(). Same logic either way.

tools/controller/pickup_guard.py:

- transition_exhausted_to_stuck(): finds attempts with status='pending'
  AND pickup_count >= MAX_PICKUPS (default 3 per v6 blocker fix)
  AND workflow not already terminal. Transitions workflow → STUCK,
  marks attempt as 'reaped', inserts controller_events with
  reason='attempt-pickup-exhausted' + pickup_count + max_pickups.

45 new tests:
- state_machine: basic shape (states partition, every transition uses
  known states + defined events), apply_event success/error paths,
  events_from + reachable_from helpers (including cycle awareness),
  per-invariant zero-violations against the live table, per-invariant
  monkeypatch-violations to prove the checks catch the bug class they
  claim to, parametrised sanity check "every non-terminal can reach
  some terminal".
- reaper: empty DB / fresh heartbeat / stale heartbeat reaped /
  per-row TTL respected / event row created / only-in-progress
  reaped / multiple stale attempts.
- pickup guard: empty DB / below limit / at limit / in-progress not
  checked / terminal workflow skipped / event payload content /
  default max_pickups matches v6.

Total: 229 controller tests; full auto_agents suite 2591 pass.
2026-05-18 13:34:28 -04:00
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2024-01-25 23:14:00 -05:00
2026-04-21 19:44:48 +00:00

CleverAgents Core

CleverAgents is a Python-first automation platform. It provides a unified agents CLI, an interactive Textual TUI, embedded runtime, and service orchestration tools while embracing modern Python tooling.

Highlights

  • Unified CLI entry points: cleveragents and agents
  • Interactive TUI (agents tui) — full-screen Textual app with multi-session tabs, persona switching, slash commands, reference picker, and context-sensitive F1 help
  • Persona system — YAML-backed personas bind actors, argument presets, and scope references to named identities; persisted in ~/.config/cleveragents/personas/
  • Session management — create, list, export, and import conversation sessions; full JSON export/import for portability; Markdown transcript export (--format md) for human-readable sharing
  • First-run experienceActorSelectionOverlay guides new users to pick an actor on first TUI launch; creates a "default" persona automatically
  • Server modeagents server connect configures a remote CleverAgents server; Kubernetes Helm chart in k8s/ for production deployment
  • A2A integration — Agent-to-Agent protocol facade wires CLI and TUI to live application services (session, plan, registry, event)
  • Permissions screen — TUI overlay for reviewing tool permission requests with unified, side-by-side, and context diff views; session-scoped allow/reject decisions
  • Actor thought blocks — expandable reasoning trace widgets rendered inline in the conversation stream with muted styling
  • UKO runtime — Universal Knowledge Ontology query interface, inference engine, and graph persistence for ACMS context strategies
  • Database resource handler — full CRUD and checkpoint/rollback support for SQLite, PostgreSQL, MySQL, and DuckDB resources
  • Estimation lifecycleactor.default.estimation config key wires an estimation actor into the Strategize-to-Estimate lifecycle hook
  • Shell danger detection — TUI shell mode (! prefix) classifies commands by danger level (LOW → CRITICAL) and surfaces a warning overlay before executing destructive, privilege-escalating, or exfiltration-risk commands
  • Inline permission questionsPermissionQuestionWidget renders single-file permission requests directly in the conversation stream with single-key shortcuts
  • Invariant reconciliationInvariantReconciliationActor runs automatically at every plan phase transition; failures block the transition and emit INVARIANT_VIOLATED
  • UKO provenance tracking — every typed triple now carries sourceResource, validFrom, and isCurrent metadata; a revision chain enables temporal queries
  • JSON-RPC 2.0 A2A wire formatA2aRequest/A2aResponse fields renamed to standard JSON-RPC 2.0 names (method, id, result, error)
  • Fast Typer/Click-based interface with parity for help/version behavior
  • Behavior-driven coverage via Behave and Robot Framework
  • Nox automation for linting, typing, testing, docs, builds, and benchmarks
  • MkDocs-powered documentation with CleverAgents branding

Quick Start

# clone the CleverAgents core repository
git clone https://git.cleverthis.com/cleveragents/core.git
cd core

# install dependencies
python -m venv .venv
source .venv/bin/activate
pip install -e ".[dev,tests,docs]"

# set up pre-commit hooks and verify tooling
bash scripts/setup-dev.sh

# verify the CLI
agents --help
agents --version

Launch the TUI

# install TUI extra
pip install -e ".[tui]"

# launch the interactive terminal UI
agents tui

Inside the TUI:

  • Type a message and press Enter to chat with the active actor
  • Press / to open the slash command overlay (67 commands across 14 groups)
  • Press @ to open the reference picker and insert file/resource references
  • Press ! to enter shell mode and run a subprocess command
  • Press F1 to toggle the context-sensitive help panel
  • Press Ctrl+T to cycle through argument presets for the active persona
  • Press Ctrl+Q to quit

Session management

agents session create --actor openai/gpt-4o
agents session list
agents session export --session-id <ID> --output session.json
agents session import --input session.json

Server mode

# connect to a remote CleverAgents server
agents server connect --url https://my-server.example.com --token <TOKEN>

# check connection status
agents server status

Developing

Pre-commit hooks run automatically on every git commit (formatting, linting, type checking, security scanning). To run checks manually:

# core validation
nox -s format            # ruff auto-formatting
nox -s lint              # ruff linting
nox -s typecheck         # pyright type checking
nox -s unit_tests        # behave unit tests
nox -s integration_tests # robot integration tests

# quality & security
nox -s security_scan     # bandit security scanning
nox -s dead_code         # vulture dead code detection
nox -s complexity        # radon complexity analysis
nox -s pre_commit        # run all pre-commit hooks
nox -s adr_compliance    # verify ADR compliance

For the full quality automation guide, see docs/development/quality-automation.md.

Documentation

nox -s docs
nox -s serve_docs

Tests

Behave feature scenarios live under features/ and Robot suites under robot/. Use the Nox sessions above to execute them in parity with the implementation plan.

Observability

LangSmith tracing is optional and off by default. Enable it by exporting CLEVERAGENTS_LANGSMITH_ENABLED=true along with a project name and API key (CLEVERAGENTS_LANGSMITH_PROJECT, CLEVERAGENTS_LANGSMITH_API_KEY). The settings module automatically mirrors these values to LANGCHAIN_TRACING_V2, LANGCHAIN_PROJECT, and LANGCHAIN_API_KEY, so LangChain/LangGraph agents emit traces without extra wiring. Additional knobs such as CLEVERAGENTS_LANGSMITH_ENDPOINT, CLEVERAGENTS_LANGSMITH_USER_ID, and CLEVERAGENTS_LANGSMITH_TAGS are documented in docs/observability.md.

LLM provider configuration

CleverAgents ships with a LangChain/LangGraph powered provider registry that discovers whichever API keys you export and automatically selects the best available provider. The CLI now uses actors: select an actor with --actor <name> (or set a default via agents actor set-default). Actors embed provider/model choices; built-in actors are seeded from CLEVERAGENTS_DEFAULT_PROVIDER / CLEVERAGENTS_DEFAULT_MODEL, then fall back to the built-in order (openai → anthropic → google → azure → openrouter → groq → together → cohere → gemini).

Required environment variables

Provider Primary variables
OpenAI OPENAI_API_KEY
Anthropic ANTHROPIC_API_KEY
Google GOOGLE_API_KEY or GOOGLE_GENAI_API_KEY
Azure OpenAI AZURE_OPENAI_API_KEY plus AZURE_OPENAI_ENDPOINT/AZURE_OPENAI_DEPLOYMENT
OpenRouter OPENROUTER_API_KEY (+ optional CLEVERAGENTS_OPENROUTER_ORGANIZATION for sanitized headers)
Gemini GEMINI_API_KEY or GOOGLE_GEMINI_API_KEY
Cohere COHERE_API_KEY
Groq GROQ_API_KEY
Together TOGETHER_API_KEY

Set CLEVERAGENTS_DEFAULT_PROVIDER to pin the global provider (for example export CLEVERAGENTS_DEFAULT_PROVIDER=openai) and CLEVERAGENTS_DEFAULT_MODEL to lock in a model ID. When unset, the registry picks the first configured provider and uses its published default model such as gpt-4o for OpenAI or claude-sonnet-4-20250514 for Anthropic.

Diagnostics and testing shortcuts

  • agents diagnostics prints whether the registry can see your credentials and which actor/provider is selected.
  • agents tell and agents build require --actor <name> unless a default actor is set; use agents actor set-default <name> to configure one.
  • Built-in actors (<provider>/<model>) are immutable, custom actors must be named local/<id>, and the default actor cannot be removed. Use --unsafe when adding/updating configs marked unsafe; runtime only warns when invoking unsafe actors.
  • CLEVERAGENTS_TESTING_USE_MOCK_AI=true forces the in-repo mock provider so Behave/Robot suites never hit external APIs.
  • The full capability matrix (streaming, tool calls, JSON mode, etc.) is documented in docs/reference/providers.md.
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