# Caption-Pack (remote · caption-pack-mcp.onrender.com)

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

- Trust score: 23/100 (low)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `caption-pack-mcp.onrender.com`: 23/100 (this document), [markdown](https://verifymcp.io/servers/jeshuadomingo-byte-caption-pack/caption-pack-mcp.md), [page](https://verifymcp.io/servers/jeshuadomingo-byte-caption-pack/caption-pack-mcp)

## Channel facts

- Endpoint: `https://caption-pack-mcp.onrender.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 0/100
  - Transport check failed: declared streamable-http, but the endpoint returned HTTP 503.
- **Schema Quality & AI Usability**: 0/100
  - Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- **Capabilities**: 0/100
  - Capabilities not yet verified: we couldn't read the endpoint's capabilities.

**Unverified: 5 categories.** Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the Caption-Pack MCP server?

Caption-Pack is a hosted endpoint at https://caption-pack-mcp.onrender.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http jeshuadomingo-byte-caption-pack 'https://caption-pack-mcp.onrender.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "jeshuadomingo-byte-caption-pack": {
      "url": "https://caption-pack-mcp.onrender.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "jeshuadomingo-byte-caption-pack": {
      "type": "http",
      "url": "https://caption-pack-mcp.onrender.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.jeshuadomingo-byte-caption-pack]
url = "https://caption-pack-mcp.onrender.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "jeshuadomingo-byte-caption-pack": {
      "type": "remote",
      "url": "https://caption-pack-mcp.onrender.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add jeshuadomingo-byte-caption-pack --url 'https://caption-pack-mcp.onrender.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  jeshuadomingo-byte-caption-pack:
    url: "https://caption-pack-mcp.onrender.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "jeshuadomingo-byte-caption-pack": {
      "Transport": "http",
      "Url": "https://caption-pack-mcp.onrender.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add jeshuadomingo-byte-caption-pack -t streamable-http -u 'https://caption-pack-mcp.onrender.com/mcp'
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-01 (score 23, +5)

- [security improvement] HTTPS: unverified → pass

### 2026-10-26 (score 18, −5)

- [security regression] HTTPS: pass → unverified

### 2026-10-25 (score 23, −42)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Tool safety: pass → unverified
- [security regression] Stability: 0.20 → unverified
- [security regression] Transport: pass → fail
- [security] Authorization: Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified

### 2026-10-24 (score 65, +42)

- [security improvement] Injection markers: unverified → pass
- [security improvement] Transport: fail → pass
- [security] Authorization: Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
- [functional improvement] Endpoint reachability: not serving MCP → reachable
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Stability: unverified → 0.20
- [functional improvement] MCP protocol: unverified → pass

### 2026-10-20 (score 23, −40)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Tool safety: pass → unverified
- [security regression] Stability: 0.03 → unverified
- [security regression] Transport: pass → fail
- [security] Authorization: Authorisation not yet verified: we couldn't confirm whether this endpoint requires it.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-10-19 (score 63, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-18 (score 63)

First indexed and scored.

## MCP tools (3)

### `generate_captions` (~160 tokens)

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.

Input parameters:

- `audience` (string, required)
- `count` (integer)
- `include_hashtags` (boolean)
- `platform` (string)
- `tone` (string)
- `topic` (string, required)

Output parameters:

- `result` (string)

### `check_balance` (~47 tokens)

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.

Output parameters:

- `result` (string)

### `mint_free_trial` (~107 tokens)

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.

Output parameters:

- `result` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/jeshuadomingo-byte-caption-pack/caption-pack-mcp#diagnostics

## Score history

- 2026-11-05: 23
- 2026-11-04: 23
- 2026-11-03: 23
- 2026-11-02: 23
- 2026-11-01: 23
- 2026-10-31: 18
- 2026-10-30: 18
- 2026-10-29: 18
- 2026-10-28: 18
- 2026-10-27: 18
- 2026-10-26: 18
- 2026-10-25: 23
- 2026-10-24: 65
- 2026-10-23: 23
- 2026-10-22: 23
- 2026-10-21: 23
- 2026-10-20: 23
- 2026-10-19: 63
- 2026-10-18: 63

## Common questions

### What is the Caption-Pack MCP server?

Caption-Pack is an MCP server listed in the public MCP registry as io.github.jeshuadomingo-byte/caption-pack. Deterministic social-caption API: hooks, bodies, CTAs + hashtags as JSON. No LLM in the loop. This page covers its hosted endpoint (https://caption-pack-mcp.onrender.com/mcp).

### Is the Caption-Pack MCP server safe to use?

Caption-Pack scores 23 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Caption-Pack MCP server expose?

Caption-Pack exposes 3 tools: generate_captions, check_balance, mint_free_trial. Their descriptions and schemas cost roughly 314 tokens of context every time the server is loaded.

### Does the Caption-Pack MCP server require authentication?

Its publisher declares no required credentials for Caption-Pack. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.

### Is the Caption-Pack MCP server still maintained?

Caption-Pack is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://caption-pack-mcp.onrender.com/mcp
- Website: https://muse.ai/s/caption-pack-api-xfxt62ya0xcxlxhh
- Changelog RSS feed: https://verifymcp.io/servers/jeshuadomingo-byte-caption-pack/caption-pack-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/jeshuadomingo-byte-caption-pack/caption-pack-mcp.json
- HTML version of this page: https://verifymcp.io/servers/jeshuadomingo-byte-caption-pack/caption-pack-mcp