x402 SKILL.md skillA
x402 from tenequm/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tenequm/skills/x402@v0.11.3Pins v0.11.3 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tenequm/skills
- Path
archive/x402/SKILL.md- Versions recorded
- 2
- Latest version
- v0.11.3, committed Nov 5, 2026
- First version recorded
- Nov 5, 2026
- Size
- 18,779 bytes
- Repository stars
- 39
- License
- MIT
Build internet-native payments with x402 - HTTP 402 for on-chain micropayments, no accounts or API keys. Use for paid APIs, paywalled content, agent payment flows, or per-call MCP tools. TypeScript, Python, and Go SDKs across EVM and Solana.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# x402 Protocol Development x402 is an open standard (Apache-2.0) that activates the HTTP `402 Payment Required` status code for programmatic, on-chain payments. Originally created by Coinbase, now maintained by the [x402 Foundation](https://github.com/x402-foundation/x402). No accounts, sessions, or API keys required - clients pay with signed crypto transactions directly over HTTP. ## When to Use - Building a **paid API** that accepts crypto micropayments - Adding **paywall** to web content or endpoints - Enabling **AI agents** to autonomously pay for resources - Integrating **MCP tools** that require payment - Building **agent-to-agent** (A2A) payment flows - Working with **EVM** (Base, Ethereum, MegaETH, Monad, Polygon, Stable, Arbitrum), **Solana**, **Stellar**, **Aptos**, **NEAR**, or **XRPL** payment settlement - Implementing **usage-based billing** with the `upto` scheme (LLM tokens, bandwidth, compute) - Running an **in-process facilitator** (self-facilitation) without external facilitator dependency ## Core Architecture Three roles in every x402 payment: 1. **Resource Server** - protects endpoints, returns 402 with payment requirements …
Read the whole file at its exact version.
How to install
mdr add tenequm/skills/x402@sha256:ec7fd27c9d5c987aThe line at the top of this page pins the label v0.11.3, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_fyrsujnrkeqotpfl)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Nov 5, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.11.3 latest | 2026-11-05 | 6f2d944 | 18,779 B | A | view · diff |
| v0.11.3 | 2026-11-05 | ca0da7c | 18,762 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (18779 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
tenequm/skills · 39 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fyrsujnrkeqotpfl GET https://markdownregistry.com/api/v1/resolve?ref=tenequm/skills/x402 GET https://markdownregistry.com/api/v1/blob/ec7fd27c9d5c987a68b7dca5f4fa4709e1467a8ed8273d1920306abd17a5c31e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.