01 / Skill
Portable workflow
The Agent Skill activates on a line-one VPP command and tells the host exactly when to prepare, generate, format, and validate.
VPP v1.5 · Skill + deterministic MCP
A conversation protocol agents can actually keep.
Install one portable skill. Let the deterministic MCP runtime carry tags, counters, cycles, loci, and validation across every turn.
One auditable state object. The same structure in local agents and cloud LLMs.
The enforced path
One install. Two cooperating layers. One validated response.
02 / Runtime
Deterministic state
MCP carries transparent state while pure operations advance global tag counters, cycles, loci, wrappers, and recovery.
03 / Guardrail
Validation before return
Structural drift is reported or repaired before the response reaches the conversation. The model stays focused on the body.
A visible protocol loop
The model writes content. The runtime commits structure.
Move across the panel to reveal the exchange. On browsers without the experimental canvas API, the same content stays crisp and fully usable.
!<g>User commandvpp_prepare_turnContract + statemodel bodyContent onlyvpp_format_responseExact wrappervpp_validate_exchangeReturn safely
Install today
Start with the complete skill + MCP path.
The plugin keeps the portable skill, production MCP connection, generated v1.5 references, and offline fallback together as one versioned install.
Building a host adapter or reviewing the protocol?
Read the normative VPP v1.5 specification