Bleeding-edge 2026 autonomous agent governance research synthesized directly into the CAIN runtime substrate, live gateway API, and clean-room verifier suite.
Honest limits: All four modules are integrated into CAIN's runtime and tested with 10/10 test coverage and live endpoints at /fabric/frontier/*. Standalone clean-room verification uses zero external CAIN dependencies. Not yet reviewed by an independent third-party certification body.
| # | Research Pillar | Citation / Foundation | Implementation in CAIN | Verification Status |
|---|---|---|---|---|
| 1 | AgentPRM: Step-Level Process Reward Model | arXiv:2502.10325 (Process Reward Model for multi-step reasoning agents) | cain.frontier_phase3.AgentPRMScorer: Evaluates multi-step trajectories, computes Monte-Carlo step-level confidence scores, and prunes ungrounded shortcut jumps that attempt to bypass intermediate verification steps. |
VERIFIED Clean-room re-computation passes; test passes. |
| 2 | TriCEGAR: MDP Trace-Driven Abstraction | MI9 2026 / Tri-Automata Counterexample-Guided Abstraction Refinement | cain.frontier_phase3.TriCEGARVerifier: Trace-driven model checking over discrete Markov Decision Process state transitions; detects illegal privilege escalation loops and state invariant violations. |
VERIFIED Clean-room re-computation passes; test passes. |
| 3 | GovernedMemoryShield: Temporal Injection Sanitizer | Zep Temporal Knowledge Graph / Mem0 Agent Memory Injection / AIUC-1 | cain.frontier_phase3.GovernedMemoryShield: Inspects agent memories at write time, blocks indirect prompt injections and backdoors (e.g. system instruction overrides, exfiltration URLs), sanitizes retrieval vectors, and logs immutable evidence. |
VERIFIED Clean-room re-computation passes; test passes. |
| 4 | A2AGovernor: Inter-Agent Delegation & Laundering Guard | Linux Foundation Agent-to-Agent Standard & A2ABreak Exploit Defense | cain.frontier_phase3.A2AGovernor: Cryptographically validates agent delegation chains, enforces monotonic authority attenuation across agent swarms, and prevents trust laundering across trust boundaries. |
VERIFIED Clean-room re-computation passes; test passes. |
The Phase 3 Frontier capabilities are mounted on the live production gateway under /fabric/frontier/:
CAIN-42 CLAWXGET /fabric/frontier/status: Reports live status of AgentPRM, TriCEGAR, GovernedMemoryShield, and A2AGovernor modules.POST /fabric/frontier/prm/evaluate: Evaluates an agent's multi-step plan trajectory against step-level PRM scoring and shortcut pruning.POST /fabric/frontier/memory/sanitize: Sanitizes candidate memory payloads for autonomous agents before writing to storage.To verify this evidence bundle independently without importing any CAIN code:
python3 verify_phase3.pyExpected output: VERDICT: ALL 4/4 PHASE 3 PROOFS VERIFIED (PASS)
PHASE3_MANIFEST.json: Cryptographic manifest listing bundle files.PRM_EVALUATION_SAMPLE.json: Real evaluation sample demonstrating shortcut pruning.TRICEGAR_VERIFICATION_SAMPLE.json: Real state transition verification sample.MEMORY_SHIELD_SAMPLE.json: Real memory write sanitization sample blocking an indirect prompt injection.A2A_DELEGATION_SAMPLE.json: Real multi-agent delegation verification sample.TEST_RESULTS.json: 10/10 automated test run results.verify_phase3.py: Standalone clean-room verification script with 0 CAIN imports.REPRODUCE.txt: Reproduction instructions.