ActionGate

Computes numerical risk scores for transactions, decisions, or business events by applying configurable scoring models through MCP tool endpoints. The system accepts transaction context (amount, user profile, historical patterns, geographic data) and returns normalized risk scores (typically 0-100 or 0-1 scale) that indicate likelihood of fraud, default, or policy violation. Scoring logic is abstracted behind MCP tool interfaces, allowing pluggable risk models (rule-based, ML-based, or hybrid) without client-side implementation.

Simulates the predicted consequences of approving, rejecting, or conditionally gating a transaction or decision by running forward-looking models that estimate downstream effects (revenue impact, fraud loss, customer churn, compliance risk). The simulation engine accepts a proposed action and current context, then returns projected outcomes across multiple dimensions (financial, operational, regulatory). This enables decision-makers to evaluate trade-offs before committing to a policy.

Enforces business policies by evaluating transactions against configurable rule sets and decision trees, then returning a gate decision (approve, reject, challenge, escalate) with optional conditions (e.g., 'approve if amount < $5000 and risk_score < 40'). The gating engine applies policies in sequence, short-circuiting on hard blocks and accumulating soft constraints. Policies are defined declaratively (not in code) and can reference risk scores, user attributes, historical patterns, and external signals. Decisions include metadata (policy rule matched, confidence, remediation steps) for audit and debugging.

Embeds ActionGate decision endpoints directly into MCP-based automation workflows, allowing orchestration systems (agents, workflow engines, CI/CD pipelines) to call risk evaluation, simulation, and gating tools as native steps. Decisions are returned synchronously with full context, enabling downstream workflow steps to branch based on gate outcomes (e.g., approve → process payment; reject → send decline notice; challenge → trigger 2FA). The integration is protocol-native (MCP tools), eliminating the need for custom API wrappers or polling loops.

Evaluates risk across multiple independent dimensions (fraud risk, compliance risk, operational risk, customer lifetime value risk) by running parallel or sequential scoring models and aggregating results into a composite risk profile. Each dimension uses a specialized model (e.g., fraud detection uses gradient boosting; compliance uses rule-based scoring) and returns both a score and contributing factors. The system supports weighted aggregation, allowing different dimensions to contribute differently to the final decision. Scoring models are pluggable and can be swapped without changing client code.

Automatically logs all gating decisions (approve/reject/challenge) with full context (transaction details, risk scores, policy rules matched, timestamp, user ID) to an audit trail. Logs include decision metadata (confidence, contributing factors, alternative outcomes) enabling post-hoc analysis and compliance reporting. The audit trail is queryable and exportable, supporting regulatory requirements (PCI-DSS, GDPR, SOX) that mandate decision documentation. Logs are immutable (append-only) and include cryptographic signatures for tamper-evidence.

Applies different policies and risk thresholds to different user segments (new vs returning customers, high-value vs low-value, geographic regions, risk tiers) by evaluating user attributes and historical behavior to determine segment membership, then routing to segment-specific policies. Segmentation logic is declarative and can reference user profile, transaction history, and external signals. Each segment has independent risk thresholds, approval rates, and challenge strategies, enabling tailored decision-making without duplicating core logic.

Routes transactions flagged as medium-risk to challenge workflows (additional verification steps like 2FA, identity verification, or manual review) instead of outright rejection. Challenge strategies are configurable per policy and can adapt based on risk score, user segment, and transaction context (e.g., high-value transactions require manual review; low-value require 2FA). The system tracks challenge outcomes (user completed verification, failed, abandoned) and feeds results back into risk models to improve future scoring. Challenge workflows are defined declaratively and can integrate with external verification providers (SMS, email, biometric).

Allows policy rules and risk thresholds to be updated in real-time through MCP tool endpoints without restarting the ActionGate server or redeploying client applications. Policy changes are versioned and timestamped, enabling rollback if needed. The system supports gradual rollout (canary deployment) of new policies by applying them to a percentage of transactions and comparing outcomes. Policy changes are immediately effective for new transactions while maintaining consistency for in-flight decisions.