Caption-Pack

io.github.jeshuadomingo-bytePublished by GitHub account jeshuadomingo-bytev1.0.0Updated Oct 25, 2026

Deterministic social-caption API: hooks, bodies, CTAs + hashtags as JSON. No LLM in the loop.

The publisher's own server: caption.sh

VerifiedStreamable HTTPWeb executable

Overview

Caption-Pack's hosted MCP server (caption-pack-mcp.onrender.com); no sign-in required; Streamable HTTP; 3 tools.

No AI overview yet: these facts come from the registry entry and the server itself.

Endpoint
caption-pack-mcp.onrender.com
Last checked

Installation

In SourceWeft

  1. Open Caption-Pack in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.jeshuadomingo-byte%2Fcaption-pack/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "caption-pack": {
      "type": "http",
      "url": "https://caption-pack-mcp.onrender.com/mcp"
    }
  }
}

Tools

3

generate_captions

Use when the user wants ready-to-post social captions — hooks, post bodies, CTAs, and hashtags as JSON for LinkedIn, Instagram, TikTok, or X. Deterministic template engine (no LLM): best for on-brand, repeatable captions, not open-ended creative writing. tone: warm | bold | professional | playful platform: linkedin | instagram | tiktok | x count: 1-10 captions. Costs 1 API credit per call.

Parameterstonecounttopicrequiredaudiencerequiredplatforminclude_hashtags

check_balance

Use before generating when you're unsure the key still has credits, or when the user asks about their plan, tier, or expiry. Shows remaining API credits, key tier, and expiry.

Takes no parameters.

mint_free_trial

Use when no API key is configured and the user wants to try Caption-Pack free. Only call after the user agrees to the free tier — never mint silently. Mints a 25-call trial API key (no card, no account). Abuse guards: one key per IP per day, 7-day expiry, free keys can never convert to paid. The key is shown ONCE — save it as CAPTIONPACK_API_KEY immediately.

Takes no parameters.

Version history

1
  1. v1.0.0LatestOct 18, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.

Other Caption integrations

caption.sh

sh.captionOfficial publisher

A remote MCP server that lets an assistant burn styled, word-timed karaoke captions into videos through the caption.sh captions API.

Streamable HTTPWeb executableAuth
Media & DesignCredential requiredOct 24, 2026

Caption Checker

Published by GitHub account markksantos

Checks, fixes, converts and retimes SRT and WebVTT caption files against Netflix, BBC and DCMP caption standards, running locally over stdio.

STDIODesktop only
Developer ToolsNot validated · the package type cannot run in the sandboxNov 1, 2026