Aegis ProtocolAegis Protocol
Governance layer for HTTP 402 payments

Governance for autonomous HTTP 402 payments.

Aegis Protocol enforces company policies before AI agents pay APIs, data providers, or machine-to-machine services using HTTP 402-based payment flows like x402, MPP, and compatible protocols.

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Give agents autonomy. Keep companies in control.

Aegis Protocol shield logo
Policy check
Approved
Budget
Within limit
API
Allowed
Audit
Verifiable
The problem

Autonomous payments are coming. Governance is missing.

AI agents are evolving from assistants into economic actors. They access APIs, consume paid data, trigger services, and increasingly initiate payments automatically. With HTTP 402-based protocols, an API can respond with "Payment Required", allowing an agent to pay programmatically before accessing a resource. But companies need more than payment execution. They need control.

Unpredictable spend

Agents can trigger repeated paid API calls without clear financial boundaries.

No per-agent governance

Most systems track vendors or accounts, not the financial behavior of each agent.

Weak approval flows

Sensitive payments often need human approval before execution, not after the invoice.

Limited auditability

Finance, security, and compliance teams need a clear record of why each payment was allowed or blocked.

The solution

Aegis is the policy layer before the payment.

When an API requests payment through an HTTP 402 flow, Aegis checks the company policy before the transaction happens. It answers the question: should this agent be allowed to pay this API, this amount, in this context, right now?

Per-agent budgets
Transaction limits
Allowed and blocked APIs
Human approval thresholds
Preventive blocking
Verifiable audit trail

Aegis does not give money to agents. Aegis gives rules to money.

How it works

How Aegis works

  1. 1
    Step 1

    Agent requests a paid API

    The agent tries to access an API, dataset, tool, or service.

  2. 2
    Step 2

    API returns Payment Required

    The API responds using an HTTP 402-based payment flow such as x402, MPP, or a compatible protocol.

  3. 3
    Step 3

    Aegis checks policy

    Aegis evaluates budget, API allowlist, transaction amount, approval rules, and risk signals.

  4. 4
    Step 4

    Decision is made

    Aegis approves, escalates to human approval, or blocks the payment.

  5. 5
    Step 5

    Audit is recorded

    Every decision can be logged for finance, security, and compliance review.

Market / Why now

Payment infrastructure is emerging. Governance is the missing layer.

Protocols such as x402 and MPP are making it possible for agents and services to coordinate payments programmatically. This creates a new layer of machine-to-machine commerce. But payment infrastructure alone does not answer the enterprise governance question: who decides whether an agent should be allowed to pay?

x402 / MPP / HTTP 402 payments

What it does

Enable APIs and agents to coordinate payments programmatically.

Gap

They enable payment, but do not define company-specific financial policy.

Aegis role

Governance before execution.

AP2

What it does

Standardizes authorization and consent for agent-led payments.

Gap

Does not replace internal policy enforcement per agent.

Aegis role

Applies enterprise policy above payment authorization.

AWS AgentCore Payments

What it does

Enables agents to pay within the AWS ecosystem.

Gap

Environment-specific payment enablement.

Aegis role

Neutral governance layer across environments.

Payment facilitators

What it does

Verify and settle payments.

Gap

Focus on execution, not corporate financial governance.

Aegis role

Policy gate before verify/settle.

Observability tools

What it does

Explain usage and cost after the fact.

Gap

Post-event visibility.

Aegis role

Preventive control before payment.

Product

Built for agentic payment governance

Policy Engine

Deterministic rules for budgets, limits, APIs, vendors, and action types.

Human Approval

Route sensitive payments to human review before execution.

API Allowlist

Control which APIs each agent is allowed to pay.

Budget Controls

Set monthly budgets and per-transaction limits per agent.

Audit Trail

Create a verifiable record of approvals, escalations, and blocked attempts.

Multi-protocol Ready

Designed for HTTP 402-based payment flows such as x402, MPP, and compatible standards.

Pricing

Start free. Scale with governance.

Free

For individual developers experimenting with agents.

  • 1 agent
  • Basic policies
  • Limited transactions
  • Limited audit
  • Non-custodial mode via multisig
  • No SLA
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Most popular

Pro

For engineering teams running agents in production.

  • Multiple agents
  • Advanced policies
  • Full audit
  • Human approval workflow
  • Non-custodial mode via multisig
  • Standard support
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Enterprise

For large or regulated organizations.

  • Dedicated KMS
  • SLA
  • Non-custodial mode via multisig
  • Compliance reports
  • Custom integrations
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Traction

From builders to enterprise governance

Aegis will launch a Free Tier in Q4 2026 to attract developers, collect feedback, validate real use cases, and identify design partners.

Q4 2026 Free Tier

Developer access for early experimentation.

Builder Community

GitHub, Discord, X, LinkedIn, Reddit, Hacker News, AI agents, MCP, x402 and MPP communities.

Design Partners

Startups and engineering teams using agents with paid APIs.

Pro and Enterprise Pilots

Convert real usage into paid plans and enterprise pilots.

Waitlist

Join the waitlist

Be among the first to test Aegis Protocol and help shape the governance layer for autonomous API payments.

Autonomous payments need autonomous governance.

AI agents will pay APIs, data providers, and services. Companies need rules before money moves.

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