okf-agentbus 0.8.0

SQLite-backed MCP event bus and control surface for heterogeneous agent orchestration.

AgentBus

The SQLite-Backed MCP Event Bus & Control Surface for Heterogeneous Agent Swarms.

When Cursor, Claude, Antigravity, and Terminal Agents (like Hermes) share a workspace, they usually coordinate through fragile append-only files (log.md). That works until you need SLA timeouts, Human-in-the-Loop (HITL) intercepts, strict schema validation, or cryptographic RBAC.

AgentBus replaces the "Game of Telephone" with a localhost sidecar: a Python MCP server backed by SQLite. No orchestrator runtime lock-in. No heavy cloud dashboard. Just a hyper-fast local pub/sub built for top-tier AI orchestration.

v0.8.0 (July 2026): Now includes the Textual-based Mission Control TUI, Swarm RBAC, SLA Timeouts, Distributed Artifact Context, and Code-First Pydantic Schemas.

Note: Install as okf-agentbus (CLI command remains agentbus).

Why AgentBus?

Alternative	Limitation	AgentBus
log.md blackboard	No schema, race conditions	Typed topics, monotonic IDs, advisory locks
LangGraph / CrewAI	Same-runtime lock-in	Heterogeneous out-of-process clients (IDE + CLI)
LangSmith	Cloud-only, backward-looking	Local SQLite, forward-looking Execution TUI
Redis pub/sub	Extra daemon, complex setup	Zero-config SQLite, native stdio MCP

Feature Arsenal (v0.3 - v0.8)

• Mission Control TUI (v0.8): A rich, keyboard-driven Textual dashboard (agentbus monitor). View live trace waterfalls and approve/reject HITL tasks with a single keystroke.
• Pluggable Pydantic Schemas (v0.7): Code-first @bus.topic decorators to enforce strict JSON schemas at the insertion layer.
• Distributed Context (v0.6): Pass massive context (like git diffs) via --attach. Hard 1MB payload limits prevent context window explosion.
• Agentic Observability (v0.5): Native OpenTelemetry-style trace_id and parent_span_id lineage.
• SLA Timeouts & Dead-Letter (v0.4): Prevent phantom deadlocks. If an agent ghosts the swarm, SLA timers route the payload to okf/dead-letter.
• Swarm RBAC & Droid Proofs (v0.3): Cryptographic JWT/UUID tokens ensure only authorized agents can publish to restricted topics.
• HITL Intercepts (v0.3): Catch dangerous payloads (e.g., DROP TABLE) and place them in PENDING_APPROVAL for human review via the TUI.

Install

pip install "okf-agentbus[devex,sdk]"

Quickstart & Examples

The best way to understand AgentBus is to read our copy-pasteable examples.

See the examples/ directory for 7 flawless, isolated Python scripts covering every feature from basic Pub/Sub to Pydantic Schemas and SLA Timeouts.

# Terminal A — Launch the Mission Control TUI
agentbus monitor

# Terminal B — Publish a handoff
agentbus publish \
  --topic okf/handoff \
  --payload '{"from":"cursor","to":"hermes","summary":"Write tests"}'

Documentation

For full architectural documentation, see the docs/ directory.

License

MIT — see LICENSE.