Permyx Developer Documentation

Execution Authorization and Governance for AI Commerce

Permyx is the execution authorization and governance control plane for AI-initiated commerce. We determine what AI agents are allowed to do before execution, and we prove what happened across channels when execution occurs.

Payment authorization != execution permission.

Enforcement is applied where interception exists; evidence is captured across all channel paths.

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Current Baseline

This repository is aligned to the April 2026 pivot baseline.

• Authorization remains the core product function
• Evidence is a first-class governance function
• Promise boundaries are explicit and enforceable
• Messaging avoids conversion optimization framing

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Quick Links

Document	Purpose
docs/platform-overview.md	Product and positioning baseline
docs/architecture.md	System architecture and control model
docs/execution-auth-api.md	Execution authorization endpoint reference
docs/data-contract.md	Data contract and protocol capabilities

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Product Model

Permyx operates as two coupled lanes:

1. Authorization lane

• Issue execution tokens
• Evaluate merchant policy
• Validate and burn tokens
• Reject replay and stale context where supported

2. Evidence lane

• Correlate authorization and validation events
• Ingest channel and referrer attribution
• Enrich order-source metadata
• Produce governance-grade audit timelines

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Authorization Flow

Step	What Happens
1. Agent requests authority	Agent calls POST /agents/v1/exec/authorize with store, item, quantity, price, and scope
2. Policy evaluation	Permyx evaluates merchant-defined limits and returns allowed or denied with reason code
3. Token issued	Short-lived signed JWT is bound to execution intent
4. Token carried	Agent carries token to checkout via supported integration path
5. Validate and consume	Checkout path calls POST /agents/v1/exec/validate; token is consumed (burn-on-use)
6. Evidence correlation	Events are linked with attribution and order metadata for auditability

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Quickstart

1) Authorize

curl -X POST https://api.sandbox.permyx.io/agents/v1/exec/authorize \
-H "Content-Type: application/json" \
-H "X-API-Key: permyx_agent_YOUR_KEY" \
-d '{ "storeId": "store-123", "permyxProductId": "PRODUCT_UUID", "sourceVariantId": "shopify:variant:123456", "quantity": 1, "price": { "amount": 29.99, "currency": "USD" }, "scope": "agent_exec" }'

2) Validate

curl -X POST https://api.sandbox.permyx.io/agents/v1/exec/validate \
-H "Content-Type: application/json" \
-H "X-API-Key: permyx_agent_YOUR_KEY" \
-d '{ "storeId": "store-123", "executionToken": "eyJhbGciOiJSUzI1NiIs..." }'

3) Observe (optional)

curl -X POST https://api.sandbox.permyx.io/agents/v1/exec/observe \
-H "Content-Type: application/json" \
-H "X-API-Key: permyx_agent_YOUR_KEY" \
-d '{ "storeId": "store-123", "sourceVariantId": "shopify:variant:123456", "quantity": 1, "hasToken": false }'

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Phase Framing

Phase 1: Log-Only Governance Visibility

• Authorization and validation outcomes are visible
• No universal checkout blocking claim
• Evidence correlation is active across mixed channels

Phase 2: Policy Enforcement

• Enforcement is applied on supported interception paths
• Replay and stale-context controls harden by integration type

Phase 3: Cross-Channel Governance

• Unified policy and timeline across direct, referrer, and built-in paths

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Environments

Environment	API Base URL	Portal
Sandbox	https://api.sandbox.permyx.io	https://portal.sandbox.permyx.io
Production	https://api.permyx.io	https://portal.permyx.io

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Support

• Email: developers@permyx.io

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Permyx - Execution Authorization and Governance for AI Commerce