Security & Compliance
How MCP-I supports security best practices, privacy alignment, and regulatory readiness
Security & Compliance
Key Takeaways
- Enforces secure delegation, identity, and verification flows - Maps security enforcement to architectural layers (Edge, Credential Service, Core) - Aligns with GDPR, EU AI Act, and NIST 800-63 - Promotes best practices for credential lifecycle management and audit
Why This Matters
MCP-I systems must balance agent autonomy with strict enforcement of delegation, identity, and audit. This page outlines how MCP-I enables secure, privacy-preserving, and compliant architectures.
Threat Models Addressed
MCP-I is designed to mitigate the following threats:
- Impersonation — Ensures agents present signed delegation from a real user
- Scope Escalation — Prevents overbroad credential use
- Replay Attacks — Enforces revocation and expiration
- Agent Abuse — Logs all behavior for reputation and denial
Enforcement Points
Enforcement Points Diagram
This diagram shows how identity, credential, and delegation requests pass through the enforcement stack. Audit logs are generated at each step.
Security controls are enforced at several key layers:
Component | What It Enforces |
---|---|
Edge Verifier | Signature, revocation, delegation chain, policy |
Credential Service | Schema, issuer, subject validation |
Audit Layer | Tamper-evident logs, alerting, audit control |
Core Service | Configuration, registry, event coordination |
Data Minimization
MCP-I uses scoped Verifiable Credentials to:
- Reduce exposure of PII or credentials
- Grant task-specific access (e.g.,
scope: ["read:email"]
) - Enable selective disclosure (Level 3)
This helps meet GDPR principles of data proportionality.
Privacy Considerations
Principle | How MCP-I Helps |
---|---|
Purpose Limitation | Scope-bound credentials prevent overuse |
Data Minimization | Only necessary identity data issued and verified |
Access Logs | Audit trails document access history |
Right to Revoke | User can invalidate credentials at any time |
Anonymity at Edge | Edge proxies can verify delegation without disclosing identity downstream |
Tamper-Evidence
All credentials are:
- Digitally signed (e.g., Ed25519)
- Audit-logged (optionally hash-linked)
- Anchored (via Bitstring Status List or distributed ledger)
This makes unauthorized activity detectable and provable.
Regulatory Compliance
MCP-I is designed to align with key regulatory frameworks:
EU AI Act
MCP-I supports EU AI Act compliance through:
- Transparency: Clear identity and delegation chains
- Auditability: Comprehensive logging of agent actions
- Human Oversight: Principal-controlled delegation
- Risk Management: Conformance levels matching risk profiles
GDPR Considerations
MCP-I addresses GDPR requirements through:
- Data Minimization: Using only necessary identity attributes
- Purpose Limitation: Explicit scope specification
- Storage Limitation: Credential expiration and revocation
- Integrity and Confidentiality: Cryptographic protections
Privacy by Design
MCP-I follows Privacy by Design principles, embedding privacy considerations into the core architecture rather than adding them as an afterthought.
Financial Regulations
For implementations in financial contexts:
- Know Your Customer (KYC): Agent identity verification
- Anti-Money Laundering (AML): Delegation tracking and audit
- SOX Compliance: Audit trail and delegation controls
Security Best Practices
Implementation Security
When implementing MCP-I:
- Secure Development: Follow secure coding practices
- Dependency Management: Regularly update dependencies
- Security Testing: Conduct penetration testing and code reviews
- Configuration Management: Securely manage and store configurations
Operational Security
For ongoing operations:
- Monitoring: Implement comprehensive security monitoring
- Incident Response: Develop and test incident response procedures
- Patch Management: Promptly apply security updates
- Secure Deployment: Use secure deployment practices
Transport Security
For network communications:
- TLS: Use TLS 1.3 for all communications
- Certificate Validation: Properly validate certificates
- Strong Ciphers: Use strong cryptographic algorithms
- Transport Credentials: Protect transport-level credentials
Authentication and Authorization
Principal Authentication
When a principal authenticates to issue delegations:
- Strong Authentication: Use multi-factor authentication
- Context-Aware Access: Consider location, device, and behavior
- Session Management: Secure session handling and expiration
- Consent Capture: Record explicit consent for delegations
Agent Authentication
When an agent presents credentials:
- Cryptographic Challenge: Use challenge-response protocols
- Credential Validation: Thoroughly verify all credentials
- Context Validation: Check request context against constraints
- Scope Enforcement: Strictly enforce delegated scopes
Implementation Example: Security Configuration
// Example security configuration for MCP-I implementation
const securityConfig = {
keys: {
storage: {
type: "hsm", // Options: "software", "hardware-backed", "hsm", "tee"
provider: "aws-kms", // Specific provider implementation
protection: "aes-256-gcm", // Encryption for software storage
},
rotation: {
schedule: "90d", // Rotate every 90 days
emergency: true, // Support emergency rotation
},
},
transport: {
minTlsVersion: "TLS1.3",
cipherSuites: ["TLS_AES_256_GCM_SHA384", "TLS_CHACHA20_POLY1305_SHA256"],
certificateValidation: "strict",
},
verification: {
nonceLength: 32, // bytes
timestampTolerance: 60, // seconds
cacheExpiry: {
didDocuments: "1h",
revocationStatus: "5m",
},
},
audit: {
integrity: "signed", // Options: "basic", "signed", "merkle"
storage: "immutable-db", // Storage mechanism
retention: "1y", // Retention period
},
};
Security Assessment Framework
MCP-I provides a security assessment framework to evaluate implementations:
Security Assessment Criteria
- Cryptographic Robustness: Strength of cryptographic algorithms and implementation
- Key Management: Security of key storage, usage, and rotation
- Authentication Mechanisms: Strength of identity verification
- Authorization Controls: Effectiveness of delegation enforcement
- Audit Coverage: Completeness and integrity of audit trails
- Privacy Protection: Handling of personal and sensitive data
- Integration Security: Security of interfaces with other systems
- Operational Security: Security of day-to-day operations
Security Scoring
// Example security assessment scoring
function assessSecurityScore(implementation) {
let score = 0;
const maxScore = 100;
// Cryptographic assessment
score += assessCryptographicSecurity(implementation) * 0.2;
// Key management assessment
score += assessKeyManagement(implementation) * 0.25;
// Authentication assessment
score += assessAuthentication(implementation) * 0.15;
// Authorization assessment
score += assessAuthorization(implementation) * 0.15;
// Audit assessment
score += assessAudit(implementation) * 0.15;
// Privacy assessment
score += assessPrivacy(implementation) * 0.1;
return {
score: Math.round(score),
maxScore: maxScore,
rating: getSecurityRating(score),
recommendations: generateRecommendations(implementation),
};
}
Best Practices
- Rotate keys on compromise or scope change
- Use expiration windows under 30 days
- Cache status lists locally but refresh on retry
- Log all failed verification attempts
- Fail securely (deny access if VC can’t be validated)
Regulatory Alignment
MCP-I is built with compliance in mind:
Framework | MCP-I Alignment |
---|---|
GDPR | Data minimization, revocation, purpose-bound access |
EU AI Act | Agent traceability, transparency, audit |
NIST 800-63 | Strong auth, delegation proof |
W3C VCDM | Credential formats, revocation models |
MCP-I is designed to evolve with regulations, not against them.