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GateKeep402

github.comInfrastructure

PulseGate's liveness check found it on 6 Oct 2026; it has been in the index since 5 Sep 2026. How this is checked

GateKeep402 is an open-source socket-layer proxy that audits x402 payment requests before an autonomous AI agent authorizes them. It provides deterministic guardrails against wallet-draining prompt injections and deceptive payment flows for developers operating AI agents.

Inferred · not functionally tested

Open SourceWebSelf-hostedCLIAPI
GateKeep402 preview
Visit github.com

Overview

6 features

Purpose: Preventing autonomous AI agents from making unsafe or unintended payments triggered by prompt injections and deceptive paywalls.

Inferred · not functionally tested

Audience: AI agent developers and operators

Inferred · not functionally tested

Functions: payments, agents, monitoring

Inferred · not functionally tested

Interfaces: API: indicated (inferred, not tested) · MCP: unknown · CLI: indicated (inferred, not tested) · Self-hosting: indicated (inferred, not tested)

Recorded constraints: pricing: open_source · license: Open Source · platforms: WEB · deployment: browser, self_hosted, cli, api_only

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: github.com. These links do not verify the individual claims.

GateKeep402 is an AI security & guardrails project. Inferred · not functionally tested: It focuses on preventing autonomous AI agents from making unsafe or unintended payments triggered by prompt injections and deceptive paywalls. Inferred · not functionally tested: GateKeep402 is an open-source project aimed at AI agent developers and operators. Basis unknown · not verified: The project is open source (Open Source). Basis unknown · not verified: It ships for the web, the command line, and API, and it can be self-hosted.

al1-nasir builds and maintains GateKeep402. Inferred · not functionally tested: Among its 6 catalogued features are payment request auditing, socket-layer proxy, and prompt injection defense. Inferred · not functionally tested: Catalogued interfaces include a public API.

Summary written by a language model from the project’s public pages.

Tasks: Inferred · not functionally tested

  • Payment request auditing
  • Socket-layer proxy
  • Prompt injection defense
  • x402 support
  • Deterministic guardrails
  • Pre-payment checks

Topics: Inferred · not functionally tested

Tags
x402-paymentsagent-securitypre-payment-auditingprompt-injection-defense
AI capabilities
TextStructured
Inference: Local

JSON profile · Text profile · Access guide

Built with & integrations

AI providers
multiple
Connectors
API
Runs on
BrowserSelf-hostedCLIAPI-only
Detected from
multiple
bLangChain in the HTML

Trust & compliance

License
Open Source
Public signals
HTTPSOpen Source

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed5 Sep · 19:50 UTC
    GateKeep402, Deterministic pre-payment guardrails for AI agents seen via Hacker News firehose (Algolia)
    Source: Hacker News firehose (Algolia) · Open

Frequently asked questions about GateKeep402

What does GateKeep402 do?
Inferred · not functionally tested: GateKeep402 focuses on preventing autonomous AI agents from making unsafe or unintended payments triggered by prompt injections and deceptive paywalls. It is catalogued under AI security & guardrails on PulseGate.
Who is GateKeep402 for?
Inferred · not functionally tested: GateKeep402 is an open-source project built for AI agent developers and operators.
Does GateKeep402 have a free plan?
Basis unknown · not verified: Yes — GateKeep402 is open source under the Open Source license and free to use.
What platforms does GateKeep402 run on?
Basis unknown · not verified: GateKeep402 runs on the web, the command line, and API. It can also be self-hosted.
Is GateKeep402 still active?
PulseGate's liveness check found it on 6 Oct 2026.
Who makes GateKeep402?
GateKeep402 is developed by al1-nasir.
Is GateKeep402 open source?
Basis unknown · not verified: Yes — GateKeep402 is open source under the Open Source license.
Does GateKeep402 have an API or integrations?
Inferred · not functionally tested: Yes — GateKeep402 exposes a public API.

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