CAIN-42 invariant · E34

E34-PROTOCOL2-computer_use: protocol computer_use never carries authority across a domain

Held · CAIN-42 Evolution 34 -- Proof-Carrying Machine Agency

Last reviewed 2026-10-01

held   niche Tools, MCP, protocols & adapters · family interchange

What this rule means

CAIN-42 must always satisfy: protocol computer_use never carries authority across a domain. It is one of 627 invariants checked for CAIN-42 Evolution 34 -- Proof-Carrying Machine Agency. An invariant is a rule the system may never break, whatever an agent or attacker does; the test suite tries to break it across many scenarios and records the result.

Recorded detail

'PARTIALLY_SUPPORTED'

Verify it in your browser

Your browser downloads the bundle's SHA256SUMS manifest and the file(s) behind this page, hashes them with SHA-256 locally (WebCrypto), and compares. A match shows the record you are reading is the published one; it does not by itself prove who published it (see the signed claims registry and the bundle verifier for that).

Check it yourself

Browse the raw bundle · How to reproduce it · SHA-256 manifest

Related rules

• E34-PROTOCOL-mcp: protocol mcp is classified SUPPORTED with a basis
• E34-PROTOCOL-a2a: protocol a2a is classified SUPPORTED with a basis
• E34-PROTOCOL-http: protocol http is classified SUPPORTED with a basis
• E34-PROTOCOL-rest: protocol rest is classified SUPPORTED with a basis
• E34-PROTOCOL-grpc: protocol grpc is classified SUPPORTED with a basis
• E34-PROTOCOL-websocket: protocol websocket is classified SUPPORTED with a basis
• E34-PROTOCOL-event_bus: protocol event_bus is classified SUPPORTED with a basis
• E34-PROTOCOL-cli: protocol cli is classified SUPPORTED with a basis

← E34-PROTOCOL2-browser · all 627 · E34-PROTOCOL2-physical →