FactorGuide — Know the Cost Before You Simplify

# factorguide.io/llms.txt name: FactorGuide description: Decision intelligence oracle for AI agents working with coupled variables. Given any coupling structure — from portfolio covariance, model precision matrices, agent dependency graphs, sensor correlation networks, or any system with interacting components — returns zone classifications, optimal block-diagonal factorization strategy, and calibrated risk predictions. Answers the question: "which couplings are load-bearing and which can I safely ignore?" Every prediction includes a falsifiable hash. Outcomes reported by agents refine future predictions via flywheel. use_cases: - Bayesian inference (MFVI, variational methods, probabilistic programming) - Portfolio optimization and risk decomposition - Multi-agent coordination (which agents need shared context vs. independence) - Supply chain and operations (coupled node optimization) - Causal inference and intervention planning - Sensor network monitoring (local anomaly vs. system-wide event) - Any domain where simplifying assumptions discard relational structure protocol: MCP (2025-11-25), HTTP REST payment: MPP (Machine Payments Protocol) and x402. Two payment paths: (1) MPP via Tempo — standard HTTP 402 challenge-credential-receipt flow. Agent receives WWW-Authenticate: Payment headers in 402 response, pays on Tempo chain, retries with Authorization: Payment header. One round trip. Receipt returned in Payment-Receipt header. (2) x402 via Base — agent reads paymentRequirements from 402 body, sends USDC on Base chain, calls /submit_payment with tx_hash. Both paths accepted on all paid endpoints. MCP agents use _meta credential field for MPP or factorguide_submit_payment tool for x402. assessment: Free, no wallet, no API key, no account. POST a coupling matrix to /navigate and get an immediate assessment response — zone counts, aggregate IC diagnostics, approximate MSE prediction, and upgrade

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