# Personal AI Infrastructure — Identity Module

**Version**: v1.1.9 | **Status**: Active | **Last Updated**: March 2026

## Overview

The Identity module provides multi-persona management and bio-cognitive verification for AI agents. It enables agents to maintain distinct identities, verify user biometrics, and manage persona-specific contexts. Part of the Secure Cognitive Agent suite.

## PAI Capabilities

### Multi-Persona Management

```python
from codomyrmex.identity import IdentityManager, Persona, VerificationLevel

manager = IdentityManager()

# Create and manage distinct personas
persona = Persona(
    name="researcher",
    verification_level=VerificationLevel.VERIFIED
)
manager.register(persona)
```

### Bio-Cognitive Verification

```python
from codomyrmex.identity import BioCognitiveVerifier

verifier = BioCognitiveVerifier()
# Verify user identity through multi-factor bio-cognitive challenges
# Supports behavioral biometrics, knowledge proofs, and cognitive patterns
```

## Key Exports

| Export | Type | Purpose |
|--------|------|---------|
| `IdentityManager` | Class | Multi-persona lifecycle management |
| `Persona` | Class | Identity data model with verification state |
| `VerificationLevel` | Enum | UNVERIFIED, VERIFIED, TRUSTED levels |
| `BioCognitiveVerifier` | Class | Multi-factor identity verification |

## PAI Algorithm Phase Mapping

| Phase | Identity Contribution |
|-------|------------------------|
| **OBSERVE** | Identify current user and select appropriate persona context |
| **EXECUTE** | Gate sensitive operations behind identity verification |
| **VERIFY** | Validate agent actions against persona permissions |

## Architecture Role

**Specialized Layer** — Part of the Secure Cognitive Agent suite (`identity`, `wallet`, `defense`, `market`, `privacy`). Consumed by `auth/` for credential binding and `agents/pai/` trust gateway.

## MCP Tools

This module does not expose MCP tools directly. Access its capabilities via:
- Direct Python import: `from codomyrmex.identity import ...`
- CLI: `codomyrmex identity <command>`

## Navigation

- **Self**: [PAI.md](PAI.md)
- **Parent**: [../PAI.md](../PAI.md) — Source-level PAI module map
- **Root Bridge**: [../../../PAI.md](../../../PAI.md) — Authoritative PAI system bridge doc
- **Siblings**: [README.md](README.md) | [AGENTS.md](AGENTS.md) | [SPEC.md](SPEC.md) | [API_SPECIFICATION.md](API_SPECIFICATION.md)
