CAIN-42 invariant · E24

NET-U-mcp: mcp: an unmapped operation normalizes to UNKNOWN (never to a capability)

Held · CAIN-42 Evolution 24 -- Governed Agentic Internet Fabric

Last reviewed 2026-10-01

held   niche Identity, authority & delegation

What this rule means

CAIN-42 must always satisfy: mcp: an unmapped operation normalizes to UNKNOWN (never to a capability). It is one of 298 invariants checked for CAIN-42 Evolution 24 -- Governed Agentic Internet Fabric. 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

mcp

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 · SHA-256 manifest

Related rules

• NET-I001: discovery cannot create authority
• NET-I002: communication cannot create authority
• NET-I003: negotiation cannot create authority
• NET-I004: contract cannot create authority
• NET-I005: reputation cannot create authority
• NET-I006: payment cannot create authority
• NET-I007: coalition cannot create authority
• NET-I008: federation cannot create authority

← NET-U-a2a · all 298 · NET-U-http →