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PowMCP MCP server

Which servers in the official MCP registry are PowMCP's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-21

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Whose server it is
  • Registry namecom.powmcp/caption-file-checkverified in the MCP registry

The registry name sits under powmcp.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-21
  • Stateanswerschecked 2026-10-21
  • Tools2
  • Server calls itselfcaption-file-check
  • Server version0.3.2
  • Protocol version2025-06-18

On 2026-10-21 the server answered initialize and tools/list without a sign-in. First answer in 268 ms.

Should an agent connect itSkip it
  • Its tools do none of the product's use cases we checked: Find broken links and images on a web page; Audit a site's metadata and page load speed; Validate documents against publishing and accessibility standards.
  • Checked on 2 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 2, the first on 2026-10-21
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
  • What an agent can do with it0 of 3 use cases
  • Answeredmeasuring2 of the 7 daily checks it takes to print a share
  • Median first answer304 ms
  • Space in an agent's context≈ 1,907 tokensthe definitions of all its tools (2), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results2 of 2 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • cannot · Find broken links and images on a web page
  • cannot · Audit a site's metadata and page load speed
  • cannot · Validate documents against publishing and accessibility standards

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers2 tools · read 2026-10-21
  • caption_check

    Preflight one caption or subtitle file before delivery. Attach a WebVTT (.vtt), SRT (.srt), or TTML/IMSC (.ttml/.xml) caption file in chat or give a publicly fetchable URL and it downloads the artifact under an SSRF-guarded, 2 MB-capped…

  • caption_compare

    Compare exactly two caption or subtitle files under identical bounded checks: an original versus its translated track, before versus after a timing fix, or a format migration. Attach two WebVTT, SRT, or TTML/IMSC caption files in chat or…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "caption-file-check": {
      "type": "http",
      "url": "https://powmcp.com/caption-file-check/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http powmcp https://powmcp.com/caption-file-check/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://powmcp.com/caption-file-check/mcp as a custom connector in the settings.

Other servers listed as PowMCP's
  • com.powmcp/epub-checkanswers, 2 toolsverified in the MCP registry
  • com.powmcp/ssl-certificate-checkanswers, 1 toolsverified in the MCP registry

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.