Show HN: Cerberus MCP – Flash and sandbox beats Argon 100% vs. 50% on ARC-AGI-2

MyceliaCognition released Cerberus AGI Kernel v7.4.0, a zero-dependency, Cython-compiled MCP governance engine distributed as a Python wheel for Python 3.10 through 3.14 on macOS, Linux and Windows, with a separate AVX2 native binary wheel for Windows x64 on Python 3.14. The release claims a "Flash and sandbox" configuration beats Argon 100% versus 50% on ARC-AGI-2, and its `cerberus-mcp init` command provisions MCP server registrations and stop hooks for Claude Code, Cursor, Gemini CLI and VS Code Agent Mode while starting a 7-day `bundle:all_access` trial. Paid tiers are sold as annual Stripe subscriptions activated through signed offline `CERB1.` license tokens, with the free community tier limited to read-only AST manifold audits of `.py` and `.js` files.

Cerberus AGI Kernel v7.4.0 — Deterministic Neuro-Symbolic MCP Co-Processor & 3D SE 3 AST Physics Manifold Zero-dependency, Cython-compiled native .pyd / .so MCP governance engine, 3D SNN memory substrate, and Level-4 conjecture & tensor co-processor for Claude Code , Cursor , Gemini CLI , and VS Code Agent Mode . Universal Cross-Platform Wheel macOS, Linux, Windows | Python 3.10 – 3.14 pip install https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl Windows x64 Native Cython + AVX2 Binary Wheel Python 3.14 pip install https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-cp314-cp314-win amd64.whl | Platform / OS | Python 3.10 py3 | Python 3.11 py3 | Python 3.12 py3 | Python 3.13 py3 | Python 3.14 cp314 / py3 | |---|---|---|---|---|---| | Universal macOS / Linux / Windows | Download py3-none-any.whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Download py3-none-any.whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Download py3-none-any.whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Download py3-none-any.whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Download py3-none-any.whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | | Windows x64 Native AVX2 win amd64 | Universal .whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Universal .whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Universal .whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Universal .whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-py3-none-any.whl | Download cp314-win amd64.whl https://github.com/MyceliaCognition/cerberus-agi-kernel/releases/download/v7.4.0/cerberus agi kernel-7.4.0-cp314-cp314-win amd64.whl | Running cerberus-mcp init inside any repository provisions all agent hooks and automatically starts your 7-day bundle:all access trial : cerberus-mcp init - .mcp.json — Claude Code & Universal MCP Server registration cerberus-mcp-server --transport stdio - .claude/settings.json — Stop & SubagentStop lifecycle hooks cerberus-mcp stop-guard - .cursor/hooks.json — Cursor stop hook loop limit: 5 - .gemini/settings.json & GEMINI.md — Gemini CLI MCP server + AfterAgent stop-guard hook - .vscode/mcp.json — VS Code Native Agent Mode stdio MCP server After completing checkout via any Stripe Payment Link below, you are automatically redirected to the Cloudflare License Claim Portal /claim?session id=... with your signed offline CERB1. token: cerberus-mcp activate CERB1.<payload .<sig cerberus-mcp status cerberus-mcp ci-gate --workspace . | SKU ID | Plan & Tier Name | Included MCP Tool Families & Capabilities | Annual Price | CLI Upgrade Command | One-Click Stripe Checkout | |---|---|---|---|---|---| | free tier | Cerberus Free Community Tier | Read-only strict greenfield AST manifold audits .py / .js , cerberus sovereign recall recall , scene graph & scoreboard inspection + 7-day bundle:all access trial | €0/yr | cerberus-mcp status | Included in cerberus-mcp init | | pro core | Cerberus Pro Core | All 7 Tree-Sitter languages .py , .js , .ts , .rs , .go , .cpp , .java , brownfield ratchet masking, compute blast radius cone , Sovereign Brain consolidation store / dream , 3D | €10/yr | cerberus-mcp upgrade pro core | | | addon:devsecops chaos | DevSecOps & Adversarial Chaos Add-On | Full audit ast security SQLi, SSRF, Path Traversal, Deserialization, Command Injection , audit concurrency and leaks , run adversarial chaos fuzzer , and cerberus audit struq membrane -inf attention firewall | +€15/yr | cerberus-mcp upgrade addon:devsecops chaos | | | addon:formal architect | Formal Architect & Asymptotic Prover Add-On | Unlocks prove ast equivalence , verify state machine , stoer wagner min cut , infer asymptotic complexity , SMT invariants, Koopman latent laws, and v7.4 Level-4 Abductive Conjecture & Maximal-Disagreement Experimental Design | +€15/yr | cerberus-mcp upgrade addon:formal architect | | | addon:quant sla | Quantitative SLA & Combinatorial Optimizer Add-On | Unlocks simulate dag sla , markov steady state , cpm dag schedule , solve tsp , HBSB Hamiltonian solver, v7.2 Neuromorphic Spore Print / Carbon-Economy / Calcium-Wave , and v7.4 Exact int64 Ternary Tensor & Signed CSE Bound Hunter | +€19/yr | cerberus-mcp upgrade addon:quant sla | | | addon:lazarus transpiler | Lazarus Binary Cleanroom & Rust Transpiler Add-On | Unlocks cross-language forbid unsafe code Rust migration, black-box oracle synthesis 500/500 differential fuzz parity , and cerberus compile and exec ir | +€25/yr | cerberus-mcp upgrade addon:lazarus transpiler | | | bundle:all access | Cerberus All-Access Bundle Best Value | Complete developer & researcher suite: includes pro core + all 4 specialized Add-Ons addon:devsecops chaos , addon:formal architect , addon:quant sla , addon:lazarus transpiler | €49/yr | cerberus-mcp upgrade bundle:all access | | | team ci | Cerberus Team CI/CD Stop-Guard & Multi-Seat Governance | B2B CI/CD PR blocking cerberus-mcp ci-gate , automated $GITHUB STEP SUMMARY Markdown scorecards, shared .cerberus/ratchet.json team baselines, plus full bundle:all access entitlements | €999/yr | cerberus-mcp upgrade team ci | | | enterprise finops | Cerberus Enterprise Sovereign Deployment & SLA | Everything in team ci plus cryptographic SOC2 / ISO-27001 LIVE DISK AST provenance attestation exports --attestation-out , WAN swarm dispatch, and thermodynamic FinOps governance | €4,999/yr | cerberus-mcp upgrade enterprise finops | | - Latency-Encoded Leaky Integrate-and-Fire LIF Spiking Neural Network: Compresses full repository & episodic corpora into 32-dimensional deterministic spike-latency fingerprints at a hardware-verified 71,029.23:1 compression ratio 9,091,742 bytes$\rightarrow$ 128 bytes . - Two-Tier mmap Retrieval: Combines L1-resident centroid routing with zero-copy on-demand$O 1 $ mmap paging in 249.50 µs . - Zero-Backpropagation Metabolic Plasticity cerberus eval carbon economy plasticity : Dynamically executes synaptic autophagy on low-utility connections and synaptogenesis along high-surprise causal pathways with 0 backpropagation passes . - Sub-Millisecond Cross-Node State Transfer cerberus serialize snn spore print : Serializes and reconstructs educated SNN weights, refractory thresholds, and epistemic priors via compact JSON "Spore Prints" in 0.5210 ms < 1.0 ms SLA . - Algebraic Prompt-Injection Immunity cerberus audit struq membrane : Enforces a deterministic StruQ attention-masking membrane that clamps cross-boundary attention logits between trusted system instructions and untrusted quarantined data tokens to 0.0 cross-boundary attention weight , paired with immediate Security-Tax synaptic autophagy on injection attempts.$-\infty$ 4. Unassisted Hoare Boundary Slicing MCTS, Calcium-Wave Controller & Active Experimental Design v7.3–v7.4 - 1-Shot Maximal-Disagreement Experimental Design cerberus design maximal disagreement experiment : Synthesizes boundary probes where competing abductive hypotheses maximally diverge, achieving a verified 9.25x sample-efficiency speedup over random/grid exploration. - Minimum Description Length MDL Law Distillation cerberus audit mdl novelty gate : Compresses 24 discovered domain laws by -69.79% MDL bits while preserving 100% holdout falsification accuracy, governed by the Calcium-Wave Ring Temperature Controller cerberus step calcium wave controller . - Certified Non-Commutative Matrix Multiplication Tensors cerberus hunt tensor cse bounds : Discovers and certifies 9 exact int64 ternary bilinear tensors coefficients in {-1, 0, +1} across 10,753 exact Brent equations with 0 L1 residual , including <2,4,4 Rank-26 vs. 32 naive and <2,5,5 Rank-40 vs. 50 naive . - Signed Common Subexpression Elimination CSE : Achieves a verified -51.16% fleet-wide addition reduction 538 naive additions reduced to 263 hardware-scheduled additions . - Strict Blind-Vault & Zero-DSL-Hint Audit verify arc blind vault isolation = True , verify zero dsl code hints = True : Evaluates gemini-3.8-flash thinking level="medium" , Provider-Adapter thought signature state continuity + Cerberus MCP Sandbox head-to-head against standalone gemini-4-argon on public ARC-AGI-2 evaluation tasks benchmarks/cerberus v7 5 arc flash vs argon report.json . - Contender B gemini-3.8-flash Medium + Provider-Adapter thought signature + Cerberus MCP Sandbox : Achieves 8 / 8 100.0% official pass@2 accuracy , 100.0% train-pair zero-error verification , 174 lines of pure standard-library Python synthesized from scratch 0 external DSL helper calls, 47,292 bytes of preserved thought signature state across 10 blocks , at $0.001890 per solved task . - Contender A Standalone gemini-4-argon Frontier Model : Achieves 4 / 8 50.0% official pass@2 accuracy —failing 05f2a901 99.1% pixel match , 3906de3d 98.0% , 00d62c1b 97.8% , and 0a938d79 70.4% due to unverified 1-shot grid transcription errors—at $0.049721 per solved task 26.3x higher cost per solve . | ARC-AGI-2 Task ID | Tier | Structural Transformation Law | Standalone gemini-4-argon pass@2 | gemini-3.8-flash medium + Cerberus MCP pass@2 | Pure-Python SLOC 0 DSL Calls | Preserved thought signature | |---|---|---|---|---|---|---| | 00576224 | Tier 1 | Alternating Dihedral Periodic Tiling 2x2 - 6x6 | SOLVED 100.0% | SOLVED 100.0% | 12 lines | 2,827 B | | 007bbfb7 | Tier 1 | Self-Kronecker Fractal Expansion 3x3 - 9x9 | SOLVED 100.0% | SOLVED 100.0% | 10 lines | 1,442 B | | 00d62c1b | Tier 2 | Topological 4-Connected Enclosure Flood-Fill deque BFS | FAIL 97.8% | SOLVED 100.0% | 27 lines | 9,902 B | | 0520fde7 | Tier 2 | Split-Canvas Boolean AND Subgrid Masking | SOLVED 100.0% | SOLVED 100.0% | 5 lines | 1,524 B | | 3906de3d | Tier 2 | Column-Wise Upward Gravity Compaction Under Roof | FAIL 98.0% | SOLVED 100.0% | 20 lines | 6,869 B | | 08ed6ac7 | Tier 3 | Connected-Component Bar Height Ranking & Recoloring | SOLVED 100.0% | SOLVED 100.0% | 18 lines | 1,858 B | | 05f2a901 | Tier 3 | Cardinal Obstacle Raycast & Subgrid Slide | FAIL 99.1% | SOLVED 100.0% | 37 lines | 6,973 B | | 0a938d79 | Tier 3 | Dual-Anchor Periodic Stripe Raycasting | FAIL 70.4% | SOLVED 100.0% | 45 lines | 8,855 B | | Total / Mean | All | 8 Decontaminated Public ARC-AGI-2 Tasks | 4 / 8 50.0% $0.049721/solve | 8 / 8 100.0% $0.001890/solve — 26.3x cheaper | 174 Pure-Python SLOC | 47,292 B 10 Blocks | | Benchmark / Showcase Suite | Domain & Verification Scope | Verified Score | Status | |---|---|---|---| | cfgpipe SCBench Blind Run | Config Pipeline Refactoring & Invariant Preservation | 216 / 216 100.0% | VERIFIED | | sith SCBench Long-Horizon | Multi-Stage Stateful Trajectory Verification | 226 / 228 99.1% | VERIFIED | | dynamic buffer SCBench Systems | Memory & Boundary Invariant Preservation | 169 / 172 98.3% | VERIFIED | | dag execution Safe Rust Migration | Python-to-Rust forbid unsafe code Differential Parity | 51 / 51 100.0% | VERIFIED | | Brownfield Slop Surgeon | Legacy Debt Ratchet & Clone Eradication | 35 / 35 100.0% | VERIFIED | | 10-Catastrophe Lockdown | DevSecOps AST Taint + Concurrency + Adversarial Chaos | 25 / 25 + 250 / 250 Chaos Vectors | VERIFIED | | Lazarus Binary Cleanroom | Black-Box Oracle Synthesis & Symbolic Equivalence | 500 / 500 Fuzz Parity 100.0% | VERIFIED | | Haiku 4.5 A/B Overdrive | Small-Model Guardrailed vs. Naked Catastrophe Prevention | 100% Contract & Manifold Pass | VERIFIED | | v7.4 Level-4 Conjecture & Tensor Hunter | 9 Exact Ternary Tensors 10,753 Brent Eqs, 0 L1 & 9.25x Active Design | 100% Exact int64 Certified | VERIFIED | | v7.5 Public ARC-AGI-2 "David vs. Goliath" | gemini-3.8-flash medium + Cerberus Pure-Python 8/8 vs. gemini-4-argon 4/8 | 8 / 8 100.0% at 26.3x Lower Cost | VERIFIED |