κῆρυξ — a fast, self-contained Rust agent for LLM-driven tool execution.
Streaming-first ReAct loop · ratatui TUI · Telegram/WhatsApp/Discord/Slack gateway · autonomous coding mode

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Highlights

• Streaming-first ReAct loop — tool calls detected and executed incrementally from partial LLM output, with a tolerant XML parser and self-healing re-prompts on failure
• Ratatui TUI — prompt-first landing screen, responsive workspace panes, reasoning rails, tool activity blocks, MCP/Skills/Behavior management, live telemetry HUD (tok/s, cache hits, context %, cost)
• Messaging gateway (kerux serve) — Telegram long-polling, WhatsApp bridge, Discord/Slack adapters, inbound HTTP webhooks for Slack and external automation, live status edits, streaming replies, tool approval, voice-note STT, cron scheduling, and subagent delegation
• Autonomous coding mode — 24/7 loop that reads TODO.md, validates with local tests, and only pushes after success
• Persistent state — sessions, memory, todos, and cron jobs survive restarts (atomic JSON writes under ~/.kerux/)
• Repo-map context — tree-sitter symbols + personalized PageRank, token-budgeted into the system prompt
• Taste profiles — confidence-scored coding preferences injected from .kerux/taste.json, portable through kerux taste push|pull
• Transactional git harness — pre-run snapshots, Conventional Commits, TUI /undo
• Post-edit validation gate — successful edit tools run configured [validation] commands and return failures to the agent for self-repair; kerux validate runs the same policy manually
• Flight recorder — hash-chained run journals with read-only inspection and offline-verifiable proof capsules (see docs/src/features/flight-recorder.md)
• Fallback provider chain — opt-in [[client.fallback]] failover across providers on 429/5xx/network errors, soak-tested and documented (see docs/src/features/fallback-chain.md)
• Cost guardrails — [budget] spend ceilings enforced in the agent loop: one-time threshold warnings, pause/stop halts, one-time model downgrade, per-turn cost telemetry (see docs/src/features/cost-guardrails.md)

Install

cargo install --path crates/kerux-cli
# or grab a prebuilt binary from GitHub Releases

Quick start

kerux wizard                      # interactive setup (provider, key, model)
# or manually:
export OPENAI_API_KEY=***        # or: kerux auth login nous (OAuth, no key needed)

kerux chat                        # prompt-first TUI
kerux run --query "What is 2+2?"  # one-shot
kerux model                       # switch model anytime (fuzzy picker)
kerux serve                       # Messaging + webhook gateway
kerux autonomous                  # 24/7 coding loop
kerux validate                    # Run configured project validators once
kerux taste push team             # publish this project's learned style
kerux taste pull team             # merge that style into this project

First run with no config file and no provider credentials in the environment auto-launches kerux wizard before chat/run/serve/autonomous.

Documentation

Full docs live at kerux.eikarna.dev — built with mdBook and refreshed automatically on every push:

Quickstart	Build, configure, first run
Configuration	TOML schema, env vars, auth profiles
Architecture	Agent loop, streaming, tools
Gateway & Adapters	Telegram, WhatsApp, Discord & Slack
Features	Approval, compaction, fallbacks, STT, cron, delegation
Roadmap	What's next

Screenshots in this README and the docs are generated automatically by CI (kerux screenshot renders the TUI headlessly) whenever the UI changes.

Development

cargo build --workspace
cargo test --workspace     # 534 tests (424 core + 110 cli)
cargo fmt --all && cargo clippy --workspace --all-targets -- -D warnings

See CONTRIBUTING.md for conventions and the PR process.

License

Licensed under the MIT License.