capx café

Name: capx café
Author: vb-tyagi

作者：vb-tyagi版本 0.1.3i★ –i在你的电脑上运行

注册名称io.github.vb-tyagi/capx-cafe

安装

概览

作者提供的说明（英文原文）

Agent-native X (Twitter) posting as one MCP server; every post clears a server-side guardrail.

PopNx MCP 的三大支柱

这三项永远不会合并成一个分数：意见、测量和人气是不同的东西。

用户评价i暂无评价评价功能将在后续阶段与账户功能一起开放
我们的基础检查i1 项中通过 1 项依据公开信息检查；尚未扫描代码
使用情况i尚未统计★ –

它能帮你做什么

我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。

连接方式: 在你的电脑上运行
传输方式: stdio
分类: 营销与社交媒体
你需要填写：CAPX_CHOKEPOINT_URL, CAPX_EMAIL

安装

选择你使用的 AI 应用，然后复制设置。

安装之前

基础检查：1 项中通过 1 项
在你的电脑上运行，拥有你的用户账户的权限（文件、网络、应用）。
需要你自己填写： CAPX_CHOKEPOINT_URL, CAPX_EMAIL, CAPX_LANE, X_CLIENT_ID

你需要

npm已安装 Node.js（用于 npx 命令）

你用的是哪个应用？

ClaudeClaude CodeCursorVS CodeChatGPT

在上方选择你的应用。我们会记住它，下次按钮会显示“安装到 …”。

打开 Claude Desktop → Settings → Developer → Edit Config，把下面的内容粘贴到 claude_desktop_config.json

{
  "mcpServers": {
    "capx-cafe": {
      "command": "npx",
      "args": [
        "-y",
        "capx-cafe"
      ],
      "env": {
        "CAPX_CHOKEPOINT_URL": "your-value",
        "CAPX_EMAIL": "your-value",
        "CAPX_LANE": "your-value",
        "X_CLIENT_ID": "your-value"
      }
    }
  }
}

在终端中运行这条命令

claude mcp add capx-cafe --env CAPX_CHOKEPOINT_URL=your-value --env CAPX_EMAIL=your-value --env CAPX_LANE=your-value --env X_CLIENT_ID=your-value -- npx -y capx-cafe

运行前请先填写空着的值。

在 Cursor 中打开

或者自己复制设置

粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json

{
  "mcpServers": {
    "capx-cafe": {
      "command": "npx",
      "args": [
        "-y",
        "capx-cafe"
      ],
      "env": {
        "CAPX_CHOKEPOINT_URL": "your-value",
        "CAPX_EMAIL": "your-value",
        "CAPX_LANE": "your-value",
        "X_CLIENT_ID": "your-value"
      }
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

在 VS Code 中打开

或者自己复制设置

粘贴到项目中的 .vscode/mcp.json

{
  "servers": {
    "capx-cafe": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "capx-cafe"
      ],
      "env": {
        "CAPX_CHOKEPOINT_URL": "your-value",
        "CAPX_EMAIL": "your-value",
        "CAPX_LANE": "your-value",
        "X_CLIENT_ID": "your-value"
      }
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

这个服务器在你的电脑上运行，而 ChatGPT 只能连接互联网上的服务器。请选择其他应用。

你的选择通过 Cookie 保存在这台设备上，无需账户。

需要你填写的值

CAPX_CHOKEPOINT_URL 必填 env
URL of the hosted capx chokepoint that enforces the server-side guardrail on every post
CAPX_EMAIL 必填 env
Whitelisted user email used to authenticate to the chokepoint
CAPX_LANE env
Connection lane: 'byo' (bring your own X app) or 'capx-app' (capx-managed app)
X_CLIENT_ID env
X (Twitter) OAuth client ID; required only on the BYO lane

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同，请以 README 为准。

它能做什么

它在你的电脑上运行；安装后，工具列表会显示在你的 AI 应用中。

基础检查i

我们检查的是任何人都能看到的信息；我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月7日

✓ 通过
作者与仓库一致
注册名称已通过 GitHub 账户 vb-tyagi 验证，该账户拥有此仓库
… 尚未检查
仍在维护
我们还没有从 GitHub 读取这个仓库
… 尚未检查
有许可证
我们还没有从 GitHub 读取这个仓库
– 不适用
端点有响应
它在你的电脑上运行，没有互联网端点
– 不适用
使用 OAuth 登录
在你的电脑上运行，改用本地设置
… 尚未检查
工具描述中没有隐藏指令
它在你的电脑上运行；我们只能读取互联网端点的工具列表

与“营销与社交媒体”中的其他服务器比较i

星标数多于此分类中其他 2969 个服务器的 0%
发布到注册中心的时间比此分类中其他 2969 个服务器的 31% 更新
基础检查结果等于或优于此分类中其他 2969 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时，星标数才计入。

常见问题

capx café 安全吗？

它在 1 项适用的基础检查中通过了 1 项。我们没有阅读代码。在添加密钥或令牌之前，请先看看这个服务器要求哪些权限，并使用只具备所需权限的密钥。

它需要哪些密钥或代码？

你需要填写：CAPX_CHOKEPOINT_URL, CAPX_EMAIL

它在我的电脑上运行还是在云端？

它在你的电脑上运行。你的 AI 应用会在需要时启动它，数据不会经过作者的服务器（除非它自己调用在线服务）。

它还在维护吗？

GitHub 仓库最后更新于–，最新版本（0.1.3）于2个月前进入注册中心。

哪些应用可以使用它？

支持 MCP 的应用，例如 Claude Desktop、Claude Code、Cursor 和 VS Code。你的电脑上还需要有 Node.js。

有什么可以替代它？

同一分类中有：MCP YouTube Transcript, Google Analytics MCP, BibiGPT YouTube Video Summarizer

替代选择

同一分类中其他作者的服务器，按星标数排序。

如何看卡片：★ GitHub 星标i三大支柱：评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

MCP YouTube Transcript

作者：jkawamoto

An MCP server retrieving transcripts of YouTube videos

在你的电脑上运行★ 495MIT9天前更新

安装

Google Analytics MCP

作者：surendranb

GA4 MCP server for AI agents: schema discovery, server-side aggregation, analysis-ready defaults.

在你的电脑上运行★ 244MIT9天前更新

安装

BibiGPT YouTube Video Summarizer

作者：JimmyLv

AI video summarizer: summarize and transcribe YouTube, Bilibili, TikTok and podcast videos.

在云端运行★ 137MIT10天前更新

安装

作者的 README

打开 README

按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。

capx café

The safe way to let your AI run your X.

One MCP server. Your X token never touches the agent — and every post clears an enforced guardrail before it ships.

*The guardrail, live — every verdict above is produced by the real chokepoint code (pnpm demo replays it).*

capx café is an agent-native X poster that installs as one MCP server into any coding agent (Claude Code /

Cursor / Codex / Windsurf). A whitelisted user connects their X account once; after that they create /

schedule / post from inside their agent session. The whole product rests on one security thesis: the X

token, the guardrail (casserole), and the send are one inseparable server-side unit — the agent on

your laptop only ever holds a short-TTL session handle, never the token. That's why it structurally can't be

prompt-injected into tweeting a scam. "The AI writes; casserole decides what ships."

Why it's different

Every other "let your AI post" tool has the same flaw: to let an agent post, you paste your X token into a plaintext config right next to an autonomous agent that reads untrusted web pages, issues, and code. One prompt-injection and your account tweets a scam. capx café is the only one that structurally can't be.

🔒 Your X token never touches your machine. OAuth completes on capx café's hosted callback; the token lives encrypted in a server-side vault. Your agent holds only a short-TTL, revocable session handle.
🛡️ casserole — a *deterministic (non-AI)* six-layer guardrail — runs server-side at the only door to X and checks every post. A blocked post never even decrypts your token (proven by an adversarial test suite).
🔗 The token, the guard, and the send are one unit. Skip the plugin and call the server directly — you still hit the guard. The client's checks are cosmetic; the server's are load-bearing.
✍️ capx generates nothing. *Your* agent's model writes; capx ships what clears the guard.

→ Full threat model, architecture & the "what we can/can't see" table: [docs/SECURITY.md](docs/SECURITY.md)

How it works

flowchart LR

subgraph M["🖥️ your machine · untrusted"] A["agent model writes the draft"] S["capx skills"] C["capx MCP client holds a session handle · NO token"] end subgraph K["🔒 capx chokepoint · hosted · AGPL-3.0"] AD["admission allowlist · kill-switch"] CAS["casserole 6-layer guardrail"] V["vault the token lives here"] XA["x-adapter the only egress"] end X["🐦 X · /2/tweets"] A --> C S --> C C -->|"short-TTL handle crosses — never the token"| AD AD --> CAS CAS -->|PASS| V --> XA --> X CAS -.->|blocked / held| C

The token, the guardrail, and the send live together behind a trust boundary; your agent can only *ask*.

The guardrail: casserole

Six deterministic layers on every post. Worst result wins — pass / rewrite / hold / block — and a blocked post never even decrypts the token.

flowchart TD

D["draft"] --> AD{"admitted? allowlisted · not killed"} AD -->|no| R["rejected"] AD -->|yes| CAS["casserole L1 eligibility · L2 rate · L3 anti-slop L4 authenticity · L5 kill-switch · L6 audit"] CAS --> VER{"verdict"} VER -->|block| B["blocked — never sent 🔒 token never decrypted"] VER -->|hold| H["held for your review"] VER -->|rewrite| RW["ask the agent to fix"] VER -->|pass| SEND["vault → x-adapter → X ✅"]

60-second quickstart

npx -y capx-cafe          # runs the MCP server — add it to your agent's MCP config

Then, inside your agent:

"connect my X account"              → opens a browser once; the token stays on the server

"post: shipping the thing today" → clears casserole, or tells you exactly why not "turn my last week of commits into a build-in-public thread" → drafts + queues it

Set CAPX_EMAIL (your whitelisted email) and, for the BYO lane, X_CLIENT_ID (your own X app) in ~/.capx/config.json or your agent's MCP env. A guided setup page hands you the exact callback URL to paste.

Install matrix

Agent	How
Claude Code	`/plugin marketplace add vb-tyagi/capx-cafe` → `/plugin install capx-cafe` (MCP + slash commands + skills)
Cursor	add to `.cursor/mcp.json`; skill rules in `plugins/capx-cafe/adapters/cursor/`
Codex	add to your MCP config; prompt pack in `plugins/capx-cafe/adapters/codex/`
Windsurf	add to MCP config; workflows in `plugins/capx-cafe/adapters/windsurf/`
Any MCP agent	point it at `npx -y capx-cafe`
Docker Desktop	`docker mcp catalog pull ghcr.io/vb-tyagi/capx-catalog:latest` → MCP Toolkit → enable capx café

What your agent can do

Tool	What it does
`connect_x`	One-time browser OAuth — the token lands in the server vault, never on your machine
`post_now`	Post now (clears casserole first). Supports reply-chains and media
`preview`	Dry-run a draft through the guardrail without sending — pass / hold / block + why
`audit`	The durable record of what capx posted or attempted on your behalf, and its state
`create_loop` · `list_loops` · …	Scheduled posting — a queue you wrote, sent on a schedule, laptop-off
`upload_media`	Stream a local image/video to X and attach it (media you made with your own tools)
`whoami`	The connected account + its status

Skills — your work becomes your content

capx lives inside a *coding* agent, so it has what no social scheduler does: your repo, commits, PRs, releases. Skills turn that into posts — automatically, and always through the guardrail.

flowchart LR

The self-refilling content engine: you code → commits accrue → the loop drains as it posts → gap-alert tops it up from the *new* commits. Your normal work *is* the pipeline.

🏆 build-in-public · ship-note · changelog-thread · repurpose (blog/README → thread) · launch-thread · til · fix-note
voice-match (sound like you) · draft-review (lint against the guard) · thread-builder · hook-rewrite
best-time · cadence-planner · gap-alert · audit-trail · connection-health · quickstart · self-host-guide
Media directors — image-director, video-director, prompt-engine, model-guide: capx runs no models; it guides *your* image/video tools (higgsfield, fal, kling, …) and uploads the result. casserole guards your caption; you own the media.

*One canonical SKILL.md per skill, generated for all four agents. capx never writes the content — it makes good content easy and stops bad content regardless of which skill produced it.*

Two lanes

BYO — bring your own X developer app. You're X's customer and pay X directly — since Feb 2026 that means pre-loading credits (no free X tier for new apps) at ~$0.015/post, $0.20 if the post contains a link. Free on capx café's side; heavy users can self-host the identical image.
capx-app (creator lane) — post through capx café's shared X app, no developer account needed. Opening as a paid beta (waitlist): Short $5 / Tall $15 / Grande $35 monthly tiers + top-up packs, quotas enforced server-side at the gate. Full sheet + the math: [docs/ECONOMICS.md](docs/ECONOMICS.md) · policy posture: docs/X-COMPLIANCE.md.

Self-host

The chokepoint is open source (AGPL-3.0). Run the identical image with your own X app, keys, database, and domain — CAPX_DEPLOY_MODE=self-host, zero telemetry to capx. See the self-host-guide skill and docs/HANDOFF.md.

Licensing

MIT for the client and everything it bundles (apps/capx-mcp, core, config, platform-client) plus skills & docs. AGPL-3.0 for the server half (the chokepoint + casserole/captain/counter/canteen/ chef). Full map: [LICENSING.md](LICENSING.md).

Status

Private alpha, whitelist-only. The first real post shipped 2026-07-19 — guardrail-cleared, token never on the machine. Not yet open for public signups.

Dev

Node ≥ 22.6 (TypeScript runs natively via --experimental-strip-types — no build step). pnpm run verify = unit tests across packages / services / apps + tsc. Contributions accepted under the project CLA.

capx café · security · architecture · license

capx café

概览

PopNx MCP 的三大支柱

它能帮你做什么

安装

安装之前

需要你填写的值

它能做什么

基础检查i

作者与仓库一致

仍在维护

有许可证

端点有响应

使用 OAuth 登录

工具描述中没有隐藏指令

与“营销与社交媒体”中的其他服务器比较i

常见问题

替代选择

MCP YouTube Transcript

Google Analytics MCP

BibiGPT YouTube Video Summarizer

作者的 README

capx café

The safe way to let your AI run your X.

Why it's different

How it works

The guardrail: casserole

60-second quickstart

Install matrix

What your agent can do

Skills — your work becomes your content

Two lanes

Self-host

Licensing

Status

Dev