x-mcp skillA
x-mcp is agent-read markdown (skill) from starchild-ai-agent/official-skills: Connect a user's own X (Twitter) dev app (BYOK) for the official X API MCP (reads) plus X v2 REST writes — post, reply, like, retweet, DM. Use when the user wants to act on X with their OWN X account or app — search, read timeline/users/news/trends/bookmarks via MCP, and post/reply/like/retweet/DM via REST. Walks through OAuth 2.0 setup in the X portal, xurl CLI registration, headless OAuth (user pastes the redirect URL back), the client-not-enrolled / Pay-per-use trap, the token-expiry auto-ref.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# X API — MCP (reads) + REST (writes), BYOK Connects the user's **own** X developer app so this agent can: - **Read** via the official hosted **X MCP** (`https://api.x.com/mcp`) — 24 tools - **Write** via the **X v2 REST API** (`https://api.x.com/2/...`) — post / delete / like / retweet / reply / DM **Why BYOK (not a shared Starchild app):** X write access is per-app rate-limited (~app-wide caps), pay-per-use billed to the app owner, and TOS liability sits with the app owner. A shared app = single point of failure + neighbors starving each other + concentrated billing + content-moderation liability. So every user brings their own app + OAuth token. The token lives only on this machine (`~/.xurl`, symlinked to the persistent workspace — see STEP 3), never proxied. ## When to use this skill Use when the user wants to act on X with their OWN account/app: - "Connect my X / Twitter account so you can post for me" - "Set up the X API with my dev app", "use my X developer keys" - "Search recent tweets / read my timeline / read mentions" (with their own app) - "Post / reply / like / retweet / DM on X as me" - "Bookmark this tweet" Do NOT use — pick the right alternative instead: …
Read the whole file at its exact version.
How to install
mdr add starchild-ai-agent/official-skills/x-mcp@v1.5.2mdr add starchild-ai-agent/official-skills/x-mcp@sha256:af8626cf9dfff44dPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_s7qafmwz2utkis4y)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.5.2 latest | 2026-06-30 | 43e44b7 | 25,844 B | A | view · diff |
| v1.5.2 | 2026-06-30 | ff1227c | 25,256 B | A | view · diff |
| v1.5.2 | 2026-06-30 | c46e062 | 24,040 B | A | view · diff |
| v1.5.1 | 2026-06-30 | 5da730b | 22,088 B | A | view · diff |
| v1.5.0 | 2026-06-30 | 172e5ea | 21,143 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 (25844 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
starchild-ai-agent/official-skills · 28 stars · license none · pushed 2026-09-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_s7qafmwz2utkis4y GET https://markdownregistry.com/api/v1/resolve?ref=starchild-ai-agent/official-skills/x-mcp GET https://markdownregistry.com/api/v1/blob/af8626cf9dfff44d3a24246831f099aaef57c863a68b5b9840b710add4502396
Your agent 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.