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Welder: Social Autoposting

by Endless-River-Labsversion 1.3.0i★ –iRuns in the cloud
Registry namecom.weldergtm/welder

Install

Overview

Description from the maker (original English)

Validate, schedule and publish posts to TikTok, Instagram, Facebook, YouTube, Threads, Bluesky, X.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Marketing & social media

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 2 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • The registry lists no key to fill in.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://weldergtm.com/mcp

Run this in your terminal

claude mcp add --transport http welder https://weldergtm.com/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "welder": {
      "url": "https://weldergtm.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "welder": {
      "type": "http",
      "url": "https://weldergtm.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://weldergtm.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

The server asks you to sign in before it lists its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ! Caution

    Maker matches the repo

    The publisher (weldergtm.com) is not the repo owner (Endless-River-Labs); someone else may have listed it

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 685 ms (HTTP 401)

  • ✓ Pass

    Sign-in with OAuth

    Declares OAuth sign-in, so your AI app can take you to log in

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Marketing & social mediai

  • More stars than 0% of the other 2974 servers in this category
  • Published to the registry more recently than 94% of the other 2974 servers in this category
  • Basic checks equal to or better than 48% of the other 2974 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Welder: Social Autoposting safe?

It passed 2 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.3.0) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: MCP YouTube Transcript, Google Analytics MCP, BibiGPT YouTube Video Summarizer

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

An MCP server retrieving transcripts of YouTube videos

Runs on your computer★ 495MITUpdated 10 days ago
Install

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

Runs on your computer★ 244MITUpdated 9 days ago
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Welder: TikTok, Instagram & YouTube Autoposting

Make it here. Post it everywhere.

Make a post in your AI chat and Welder puts it on TikTok, Instagram, YouTube, Facebook Pages, Threads, Bluesky and X — now or at a time you choose.

Turn a photo or video into a post, write a text post, or plan your week in one conversation. You see every post before it goes live. Review available performance and prepare replies without leaving the conversation.

One message. Your accounts.

Ask your assistant to post a Reel, upload a Short or share your photos. Welder connects it to your TikTok, Instagram, Facebook Page, YouTube, Threads, Bluesky and X accounts. Review the content and let your assistant handle the steps.

Get ahead of your next post

Build a content plan with your assistant, then schedule the posts you approve up to 30 days ahead. Keep creating while Welder gets each post out at its scheduled time. Stop a pending post when plans change.

Make more of what works

Ask which posts people responded to and what to try next. Your assistant can read available post metrics, compare measured results and turn them into your next creative brief. Read comments and prepare thoughtful replies on supported networks.

Keep your content moving

Creators can share a finished video without switching between upload screens. Small businesses can plan a week of posts from one conversation. Social media managers can publish to the right profiles and check each result. Builders can connect an existing content workflow to their audience.

Welder provides the connection, posting, scheduling and account data. Your assistant helps prepare the content. Recurring agent tasks use your host's scheduling feature when supported and requested; Welder schedules individual posts rather than agent runs.

Start with a goal

  • “Write a post about my business and share it on Facebook and Threads.”
  • “Post my photo to Instagram with a caption you write.”
  • “Plan 3 posts for this week and show me each one before it goes out.”
  • “Post this video to my TikTok and Instagram with the caption we just approved.”
  • “Which of my posts got the best response this month? Give me three ideas to test.”
  • “Show the comments on my latest video and draft replies in my voice.”
  • “Cancel tomorrow's scheduled post; the offer has changed.”

Connect Welder

Install the plugin in your supported assistant, sign in to Welder or create an account when you connect, and connect your social accounts when a post needs them. Provider sign-in happens on the network's own website. You do not share social passwords with your assistant.

Attach a file in the chat where your assistant supports it; coding apps upload files directly; an upload link remains as a fallback. One post can carry per-network captions through options. .caption. YouTube visibility defaults to public when the account allows it; for TikTok, your assistant asks who can see each video. Your assistant can use the options you approve.

Read access supports context, account lists and stored performance reports. Uploading, connecting accounts, posting, canceling and deleting require publishing access. Waiting for upload links, refreshing post metrics and reading comments also require publishing access because they may update state or consume account usage. X posting and comment reads require the appropriate X entitlement. Account and format support depend on each network's permissions. Some analytics and comment permissions remain unavailable; Welder identifies missing data rather than reporting it as zero. Live-post deletion is supported on X and Bluesky, and on YouTube and Facebook where the connection allows it.

What Welder adds

Welder is a publishing service for AI assistants, not a thin proxy to network APIs.

Publishing on TikTok, Instagram, Facebook Pages, Threads and YouTube is open only to developer apps that pass each network's own review, and X needs paid API access. A person cannot simply plug these APIs into an assistant. Welder has been through those reviews, so people only sign in on each network's own site.

On top of that access, Welder provides:

  • Checks before posting: validate_post tests media, duration, caption length and account access against each network's rules, without publishing anything.
  • One request, many networks: a single post can go to several networks and accounts, with a different caption per network.
  • One scheduler: approved posts can be scheduled up to 30 days ahead across all networks, and pending ones can be canceled.
  • Publishing that survives failures: every network gets its own queue entry with saved progress and resumable uploads. Retrying with the same idempotency_key never creates a duplicate. If a network loses a response, Welder checks whether the post went out instead of posting again.
  • Media handling for chat: assistants that cannot send files get a short-lived upload link, and images are prepared for each network's format.
  • Results across networks: post metrics and supported comments in one place. Data a network does not share is reported as missing, never as zero.
  • Account safety: network tokens are encrypted on Welder's servers and never reach the assistant. Access is scoped, a person can grant read-only access, and tools that publish are marked so the host asks first.

Claude Code

/plugin marketplace add Endless-River-Labs/welder-plugins

/plugin install welder-social-manager@welder-plugins

The Claude Directory listing is available after Anthropic review. Direct installation from this repository is a separate distribution path.

ChatGPT and Codex

The root portable manifest and remote connection configuration package the same five workflows for supported hosts. OpenAI Directory availability follows OpenAI review. The package also includes Claude-compatible manifests.

For direct Git marketplace installation in Codex CLI:

codex plugin marketplace add Endless-River-Labs/welder-plugins

codex plugin add welder-social-manager@welder-plugins

Sign in to Welder through the host's OAuth connection flow. Direct Git installation is available separately from the reviewed OpenAI Directory listing.

For a direct remote connection, use Welder's MCP endpoint and the assistant's sign-in flow. Per-assistant setup guides are in the Welder help center.

Cursor

Add https://weldergtm.com/mcp in Cursor's MCP settings and sign in to Welder. To install the plugin, unpack the Welder package for Cursor into ~/.cursor/plugins/local/welder-social-manager and reload Cursor.

Gemini CLI

Add https://weldergtm.com/mcp as an HTTP server in Gemini CLI's MCP settings and sign in to Welder when prompted. To install the extension, run:

gemini extensions install https://github.com/Endless-River-Labs/welder-plugins

Antigravity

Add https://weldergtm.com/mcp in Antigravity's MCP settings and sign in to Welder. To install the plugin, unpack the Welder package for Antigravity, then run:

agy plugin install /path/to/welder-social-manager

Kimi

Add https://weldergtm.com/mcp in Kimi Code's MCP settings and sign in to Welder with /mcp-config login welder. To install the plugin, unpack the Welder package for Kimi and run /plugins install /path/to/welder-social-manager in Kimi Code. Complete the Welder sign-in when prompted.

Kiro

Add https://weldergtm.com/mcp in Kiro's MCP settings and sign in to Welder. To install the power, unpack the Welder package for Kiro, then choose Add Custom Power → Import power from a folder and select welder-social-manager. In CLI v3, run /powers install /path/to/welder-social-manager.

Grok Build

Run grok mcp add --transport http welder https://weldergtm.com/mcp and sign in to Welder when prompted. To use the plugin, unpack the Welder package for Grok Build and start Grok with grok --plugin-dir /path/to/welder-social-manager.

After connecting, ask your assistant to show your accounts or prepare your first post.

What the plugin sends and runs

This package contains readable instructions, connection metadata and brand images. It installs no executable server, lifecycle hooks or background process. On a tool call, your host sends the requested content, media references, account selection and options to Welder at weldergtm.com. Welder stores and processes them through its service, then sends an approved post to the selected connected social platforms through their APIs. Direct uploads go to Welder's Supabase storage through a short-lived destination returned by Welder. Welder may fetch a public HTTPS media URL when you request an import. Credentials and media upload destinations are never bundled in this repository. OAuth discovery uses https://weldergtm.com/.well-known/*; registration, consent and tokens use https://weldergtm.com/oauth/*, with read and publish scopes.

Original media is normally kept for seven days; a scheduled post keeps it until seven days after its scheduled time. Post history retains the caption, metadata and one small cover image while the workspace exists. Available metrics and comments come from connected networks; their privacy policies also apply. Your assistant can use them to prepare recommendations, without guaranteed reach or growth.

Support · Help · Privacy · Terms · Data deletion

The package instructions and configuration are MIT licensed. Welder's name and visual identity remain the property of their owner. The hosted service and private server implementation are not distributed by this package.

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