gdex-authentication SKILL.md skillA
gdex-authentication from gemachdao/gdex-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add gemachdao/gdex-skill/gdex-authentication@git:20261019.d793ca7Pins git:20261019.d793ca7 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- gemachdao/gdex-skill
- Path
skills/gdex-authentication/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261019.d793ca7, committed Oct 19, 2026
- First version recorded
- Mar 8, 2026
- Size
- 14,404 bytes
- Repository stars
- 4
- License
- MIT
Managed-custody authentication — shared API key login, session keypair generation, encrypted computedData payloads, AES-256-CBC encryption, and secp256k1 trade signing.
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
# GDEX: Authentication
All GDEX trading uses **managed-custody wallets** with encrypted `computedData` payloads. This skill covers both the simple shared-API-key auth and the full managed-custody flow.
## When to Use
- Setting up authentication for any trading operation
- Implementing managed-custody sign-in for a control wallet
- Understanding the encryption and signing pipeline
- Troubleshooting auth errors (401, 403, code 103)
## Prerequisites
```bash
npm install @gemachdao/gdex-skill
```
## 0. MCP Server: `gdex_connect` (no secrets in chat)
MCP clients do not run this flow by hand. Call `gdex_connect` with a local key file
(`{ keyFile: "~/wallet.json" }`) or `{ create: true }` for a new wallet; the server signs in,
stores the keys under `~/.gdex/accounts` (0600) and returns an `accountRef`. Pass `accountRef`
to every trading tool instead of `apiKey` / `walletAddress` / `sessionPrivateKey` / `data`.
`gdex_accounts` lists connected accounts and `gdex_disconnect` forgets one.
SDK users run the managed-custody sign-in below and pass `apiKey`, `walletAddress`
(the control wallet) and `sessionPrivateKey` to each write call.
## 1. Shared API Key Login (Simple)
…Read the whole file at its exact version.
How to install
mdr add gemachdao/gdex-skill/gdex-authentication@sha256:ccf2ae0e03a2cf94The line at the top of this page pins the label git:20261019.d793ca7, 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_3eio6qyq6jcs7fpq)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Mar 8, 2026 and Oct 19, 2026, about one every 45 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261019.d793ca7 latest | 2026-10-19 | d793ca7 | 14,404 B | A | view · diff |
| git:20261002.e5a5a95 | 2026-10-02 | e5a5a95 | 13,623 B | A | view · diff |
| git:20260521.5068b0e | 2026-05-21 | 5068b0e | 13,609 B | A | view · diff |
| git:20260308.d62249f | 2026-03-08 | d62249f | 12,639 B | A | view · diff |
| git:20260308.5155f6a | 2026-03-08 | 5155f6a | 10,446 B | A | view · diff |
| git:20260308.ce54846 | 2026-03-08 | ce54846 | 9,928 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 (14404 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
gemachdao/gdex-skill · 4 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3eio6qyq6jcs7fpq GET https://markdownregistry.com/api/v1/resolve?ref=gemachdao/gdex-skill/gdex-authentication GET https://markdownregistry.com/api/v1/blob/ccf2ae0e03a2cf94533988307f03f641c5f60626798019c657601051c3ca56cb
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.
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