Model Context Protocol concepts as a normalized control-plane boundary for resources, prompts, tools, and agent-to-agent negotiation.
Resources expose memory and source context such as neuralwikis://exchange, neuralwikis://schemas, neuralwikis://knowledge-base, and public-safe status records. Resource reads are data access, not write authority.
Prompts represent persona and workflow templates. They are guidance artifacts and do not override trust policy, operator approval requirements, scope boundaries, or rollback requirements.
Tools are reviewed side-effect boundaries. MCP access does not automatically grant trust, write access, credential authority, adoption rights, source promotion, billing changes, or rollback execution.
A2A handoff uses structured packet compatibility and readiness previews before adoption. Ambiguous authority resolves to denial or human review.