[!FROZEN] MPLP Protocol v1.0.0 Frozen Specification Freeze Date: 2025-12-03 Status: FROZEN (no breaking changes permitted) Governance: MPLP Protocol Governance Committee (MPGC) License: Apache-2.0 Note: Any normative change requires a new protocol version.
Frequently Asked Questions (FAQ)
General
What is MPLP?
MPLP (Multi-Agent Lifecycle Protocol) is an open standard that defines how AI agents create, execute, and observe plans in a controlled, interoperable manner.
What problem does MPLP solve?
MPLP provides:
- Interoperability: Agents from different vendors can work together
- Observability: Full traceability of agent actions
- Governance: Human-in-the-loop confirmation for high-risk actions
- Portability: Switch between LLM providers without code changes
Is MPLP open source?
Yes. MPLP is licensed under Apache 2.0.
Architecture
What are the protocol layers?
| Layer | Scope |
|---|---|
| L1 Core | Context, Plan, Confirm, Trace schemas |
| L2 Coordination | Role, Dialog, Collab, Network modules |
| L3 Execution | Extension, Learning modules |
| L4 Integration | Events and standards for external systems |
What is the Plan State Graph (PSG)?
The PSG is the in-memory representation of all protocol objects during execution. It tracks Context, Plan, steps, and their relationships.
Can I extend MPLP?
Yes. Use the Extension module for custom data without breaking compliance.
Implementation
Can I modify the schemas?
For FROZEN versions (v1.0.0):
- Breaking changes not allowed
- Additive changes (new optional fields) allowed
How do I verify my implementation?
- Validate outputs against the L1 Schemas
- Pass the Golden Test Suite flows
- Use the SDK validators
Which SDKs are available?
| SDK | Package | Installation |
|---|---|---|
| TypeScript | @mplp/sdk-ts | npm install @mplp/sdk-ts |
| Python | mplp | pip install mplp |
Support
Where can I report bugs?
GitHub Issues: https://github.com/coregentis/MPLP-Protocol/issues
How do I contribute?
See MIP Process for protocol changes.
2025 Bangshi Beijing Network Technology Limited Company Licensed under the Apache License, Version 2.0.