CAIN-42 invariant · E26

I-DELEG-expand-budget: expansion budget refused

Held · CAIN-42 Evolution 26 -- Universal Machine Agency Trust Fabric

Last reviewed 2026-10-01

held niche Identity, authority & delegation · family delegation_attenuation

What this rule means

CAIN-42 must always satisfy: expansion budget refused. It is one of 532 invariants checked for CAIN-42 Evolution 26 -- Universal Machine Agency Trust 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

['CHILD_BUDGET_EXCEEDS_PARENT']

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

Scope: {"limitation": "In-process trust layer over the E25 fabric. No third-party agent, MCP server or A2A peer has consumed a CAIN trust object.", "status": "SCOPE"}

Related rules

I-AUTHZ-binding-intent_digest-1: intent_digest mismatch detected
I-AUTHZ-binding-intent_digest-2: intent_digest mismatch detected
I-AUTHZ-binding-intent_digest-3: intent_digest mismatch detected
I-AUTHZ-binding-intent_digest-4: intent_digest mismatch detected
I-AUTHZ-binding-intent_digest-5: intent_digest mismatch detected
I-AUTHZ-binding-intent_digest-6: intent_digest mismatch detected
I-AUTHZ-binding-intent_digest-7: intent_digest mismatch detected
I-AUTHZ-binding-action_digest-1: action_digest mismatch detected

← I-DELEG-expand-time · all 532 · I-DELEG-expand-rate →

Try CAIN-42 on your own agents

Create a free account and every new account starts with a 7-day trial of the full platform. Or try the sandbox first, with no account at all.

Create a free account → · Try the sandbox · See the whole ecosystem