pop-pay

pop-pay is a skill for Claude Code, Codex from 100xPercent/pop-pay. It costs 41 tokens per session (1,809 once invoked), scanned A, original, MIT.

A local payment system for an AI agent that stores card details in an encrypted vault and enters them into online checkout pages through a separate browser connection.

In plain words
What is it for?
Use it to pay at online stores with an existing card, while keeping payment handling on your own machine and applying spending controls.
Why use it?
The agent does not receive the card number in its working context, reducing the risk of exposing it through a compromised instruction or response.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Use it to pay at online stores with an existing card, while keeping payment handling on your own machine and applying spending controls.

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Install with agentmods
npx agentmods add skills/100xpercent/pop-pay/pop-pay-skill
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add 100xPercent/pop-pay --skill pop-pay-skill
Clone the repo
git clone --depth 1 https://github.com/100xPercent/pop-pay

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for pop-pay

README.md
[![agentmods](https://agentmods.dev/badge/skills/100xpercent/pop-pay/pop-pay-skill/github.svg)](https://agentmods.dev/skills/100xpercent/pop-pay/pop-pay-skill)
Your own site
<a href="https://agentmods.dev/skills/100xpercent/pop-pay/pop-pay-skill"><img src="https://agentmods.dev/badge/skills/100xpercent/pop-pay/pop-pay-skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for pop-pay

Your own site · 80×15
<a href="https://agentmods.dev/skills/100xpercent/pop-pay/pop-pay-skill"><img src="https://agentmods.dev/badge/skills/100xpercent/pop-pay/pop-pay-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,809 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.01809
Opus 5 $0.00020 $0.00905
Sonnet 5 $0.00008 $0.00362
Haiku 4.5 $0.00004 $0.00181

Measured 11d ago against content hash 2f0aeaeb59ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

pop-pay scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

pop-pay-skill/SKILL.md · 230 lines

How it starts

The opening of the file, as written. The whole thing — 230 lines — stays where its author put it; the contents beside it link to each section on GitHub.

What This Skill Does

Gives your OpenClaw agent the ability to pay at any online store using your own existing credit card. The card number is stored in a local encrypted vault (AES-256-GCM) and is never placed in the agent's context window. When a payment is approved, credentials are injected directly into the checkout form via Chrome DevTools Protocol (CDP) in a separate local process — if the agent is compromised by prompt injection, the attacker cannot steal the card it never saw.

Tagline: it only takes 0.1% of hallucination to drain 100% of your wallet.


Privacy & Data Flow

All payment logic runs on your machine. There are no Point One Percent / A Hundred Percent Inc. servers in the payment path.

Component Default Data stays
Card credentials Local encrypted vault (~/.config/pop-pay/vault.enc) Your machine only
Spend policy ~/.config/pop-pay/.env Your machine only
Guardrail engine keyword mode (zero API calls) Your machine only
Guardrail engine (optional) llm mode — uses your own API key Your chosen provider

Setup (One Time)

Install from npm (https://www.npmjs.com/package/pop-pay):

# No install needed — run on demand via npx
npx -y pop-pay pop-init-vault

Or install globally:

npm install -g pop-pay
pop-init-vault

For stronger protection (recommended — blocks any agent with shell access):

npx -y pop-pay pop-init-vault --passphrase   # one-time setup
npx -y pop-pay pop-unlock                     # run once before each session

Add to your OpenClaw MCP config (or ~/.openclaw/mcp_servers.json):

{
  "mcpServers": {
    "pop-pay": {
      "command": "npx",
      "args": ["-y", "pop-pay", "launch-mcp"],
      "env": {
        "POP_CDP_URL": "http://localhost:9222"
      }
    }
  }
}

Or via the OpenClaw CLI:

openclaw mcp add pop-pay -- npx -y pop-pay launch-mcp

Then launch Chrome with CDP:

Read the full file on GitHub · 230 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 230 lines · 41 tokens per session scan A 2f0aeaeb59ee

Subscribe to this mod's changes

pop-pay is a skill published in the GitHub repository 100xPercent/pop-pay (1 stars, last pushed 2mo ago), licensed MIT. It adds 41 tokens to every session and 1,809 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

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