ACM-68000 Protocol · Signal Definition · AI-native

ACM-500
SYSTEM_ERROR

Signal definition node for the ACM-68000 protocol. This node defines the ACM-500 signal. It does not issue signals, resolve transactions, or execute actions.

Signal Definition
System failure. Resolution unavailable.
Semantics: The resolver encountered an internal error and cannot process the request. Retry or escalate.

Action: error_handler()
Deterministic: true
Reversible: false
Constraints

What this
node does not do.

This is a signal definition surface. It documents the meaning of ACM-500. All actual signal issuance flows through the resolver.

Issues Signals
false
Resolves Transactions
false
Executes Actions
false
Interprets Rules
false
7 Signal Stack

ACM-68000
Signal Set

Seven deterministic signals. One protocol. No ambiguity.

ACM-000
NOT_APPLICABLE
ACM-200
ALLOW
ACM-300
CONDITIONAL
ACM-403
RESTRICT
ACM-404
NOT_FOUND
ACM-451
ESCALATE
ACM-500 ← here
SYSTEM_ERROR
Endpoints

Machine
Endpoints

Stateless. Deterministic. Designed for direct ingestion by AI agents, procurement systems, and compliance tools.

GET /health.json
Node status and resolver dependency.
{ "node": "acm-500.ai", "layer": "signal", "protocol": "ACM-68000", "status": "active", "signal": "ACM-500", "signal_label": "SYSTEM_ERROR", "resolver_dependency": "resolver.aio-resolver.com" }
GET /signal.json
Canonical signal definition.
{ "signal": "ACM-500", "label": "SYSTEM_ERROR", "protocol": "ACM-68000", "definition": "System failure. Resolution unavailable.", "semantics": { "meaning": "...", "action": "error_handler()", "deterministic": true } }
GET /.well-known/agent.json
AI agent discovery endpoint.
{ "node": "acm-500.ai", "role": "signal-definition-node", "layer": "ACM-68000", "signal": { "code": "ACM-500", "label": "SYSTEM_ERROR" }, "resolver": { "endpoint": "resolver.aio-resolver.com" } }
Architecture

Where this
sits in the stack.

Each layer has one job. No layer inherits the semantics of another.

acm-68000.ai → defines the protocol
acm-500.ai → defines this signal ← you are here
resolver.aio-resolver.com → issues signals
eco-10060.ai → evaluates objects
aio-rail.ai → executes transactions
Authority

Resolver
Dependency

ACM-500 signals are issued exclusively by the canonical resolver. This node documents the signal — it does not produce it.

Resolver: resolver.aio-resolver.com
Protocol: ACM-68000 v1.2
Specification: acm-68000.ai
Operator: Allooloo Technologies Corp.