Rast Creator Tools
REMOTE · RAST-CREATOR-TOOLS-MCP.STUDIO-C25.WORKERS.DEV
Short-form video tools: Reels/TikTok/Shorts safe zones, bitrate math, SRT checks, export settings.
Available components
Last scanned (1 hour ago)
Scores higher than 52% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Design and Media
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. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability61
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1573 tokens (~314/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
- Stability: unverified → 0.03 ▲ functional
- 1 Nov 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://rast-creator-tools-mcp.studio-c25.workers.dev/v1/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=studio-c25.workers.dev | CN=WE1,O=Google Trust Services,C=US | 3 Nov 2026 | 1 Feb 2027 | ECDSA 256 | ECDSA-SHA256 | d8f8d34f144d97f3138c808385f74e5c |
| SANs: studio-c25.workers.dev, *.studio-c25.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of rast-creator-tools-mcp.studio-c25.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://rast-creator-tools-mcp.studio-c25.workers.dev/v1/mcp | Verified | 200 | |
| http (plaintext) | http://rast-creator-tools-mcp.studio-c25.workers.dev/v1/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
calculate_bitrate Calculate video bitrate and file size ~428
Calculates the file size of a video export from its duration and bitrate, or (when target_size_mb is given) the highest video bitrate that fits that size with a 2% safety margin. Without an explicit bitrate it uses the reference value for the platform, resolution and frame rate (YouTube and Vimeo recommendations, Apple ProRes target data rates, or Rast's delivery target for Instagram and TikTok, which publish none). Also returns size-limit warnings (Meta 4 GB, TikTok ads 500 MB / 516 kbps) and a two-pass ffmpeg command.
| Name | Type | Req | Description |
|---|---|---|---|
| audio_kbps | number | – | Audio bitrate in kbps; 0 = no audio. Default 320. |
| duration_seconds | number | yes | Video length in seconds (e.g. 90 for 1:30). |
| fps | number | – | Frame rate, e.g. 24, 25, 29.97, 30, 50, 60. Default 30. 48 fps and above use the high-frame-rate tables. |
| platform | string | – | Delivery target used for the reference bitrate: 'youtube', 'youtube_hdr', 'vimeo', 'instagram', 'tiktok', or a ProRes flavour ('prores_proxy', 'prores_lt', 'prores_422', 'prores_hq', 'prores_4444', '… |
| resolution | string | – | '720p', '1080p' (also 1080x1920 vertical), '1440p', '2160p' (4K UHD) or 'dci4k' (4096x2160). Default '1080p'. |
| target_size_mb | number | – | If set, calculate the maximum video bitrate that fits this file size in megabytes (1 MB = 1,000,000 bytes) instead of the file size. |
| video_bitrate_mbps | number | – | Video bitrate in Mbps to calculate the file size with. Omit to use the platform reference value. |
No output schema declared.
No examples provided.
check_text_position Check text position against platform UI ~296
Checks whether a rectangular text box (caption, title or logo) on a vertical video frame stays inside the safe zone of Instagram Reels, TikTok, YouTube Shorts or Instagram Stories. Reports which interface element it overlaps (top bar, bottom caption area, right button column, edge margins, optionally the Reels comment-reply sticker) and suggests the nearest position that clears them. Coordinates are pixels from the top-left corner of the frame.
| Name | Type | Req | Description |
|---|---|---|---|
| canvas_height | integer | – | Frame height in pixels. Default 1920. |
| canvas_width | integer | – | Frame width in pixels. Default 1080. |
| height | number | yes | Text box height in pixels. |
| include_comment_sticker | boolean | – | Reels only: also test against the comment-reply sticker band (approximately y 300-560 px on 1080x1920). Default false. |
| platform | string | yes | Vertical video platform: 'reels' (Instagram Reels), 'tiktok', 'shorts' (YouTube Shorts), 'story' (Instagram Stories) or 'all' (the strictest margins of all four combined). |
| width | number | yes | Text box width in pixels. |
| x | number | yes | Left edge of the text box in pixels, measured from the left of the frame. |
| y | number | yes | Top edge of the text box in pixels, measured from the top of the frame. |
No output schema declared.
No examples provided.
export_settings Recommended video export settings ~160
Returns recommended export settings for uploading a finished video to YouTube (SDR or HDR), Vimeo, Instagram Reels or TikTok, or for a ProRes archive master: container, codec, resolution, frame rate, bitrate, colour and audio, plus links to each platform's official spec page and a short step list that works in any editor.
| Name | Type | Req | Description |
|---|---|---|---|
| orientation | string | – | 'vertical' 9:16 (default) or 'horizontal' 16:9; changes the frame size given. |
| platform | string | yes | 'youtube', 'youtube_hdr', 'vimeo', 'instagram_reels', 'tiktok' or 'prores_master'. |
| resolution | string | – | '1080p' (default) or '4k'. |
No output schema declared.
No examples provided.
get_safe_zone Get vertical video safe zone ~172
Returns the approximate areas of a vertical (9:16) video frame that the app interface covers on Instagram Reels, TikTok, YouTube Shorts or Instagram Stories: unsafe margins in pixels and percent, the safe rectangle for text, the position of the right-hand button column and short placement guidance. Values are measured on 1080x1920 and scaled to the given frame size.
| Name | Type | Req | Description |
|---|---|---|---|
| height | integer | – | Frame height in pixels. Default 1920. |
| platform | string | yes | Vertical video platform: 'reels' (Instagram Reels), 'tiktok', 'shorts' (YouTube Shorts), 'story' (Instagram Stories) or 'all' (the strictest margins of all four combined). |
| width | integer | – | Frame width in pixels. Default 1080. |
No output schema declared.
No examples provided.
validate_srt Validate SRT or WebVTT subtitles ~285
Checks pasted SRT or WebVTT subtitle text and lists problems per subtitle: overlapping or out-of-order timings, gaps shorter than the minimum frame gap, reading speed (characters per second), line length, line count, too short or too long durations, and broken characters from a wrong encoding (mojibake such as 'é' or '’', with the probable correct text). Optionally returns a corrected SRT. The text is only processed for this response.
| Name | Type | Req | Description |
|---|---|---|---|
| fps | number | – | Video frame rate used for the minimum gap. Default 25. |
| include_fixed_srt | boolean | – | Also return a corrected SRT (encoding fixed, overlaps trimmed, long single lines split, short subtitles extended). Default false. |
| min_gap_frames | integer | – | Minimum gap between subtitles in frames. Default 2. |
| preset | string | – | Rule set: 'netflix' (42 chars/line, 2 lines, 17-20 CPS, 0.83-7 s; default), 'vertical' (short-form vertical video: 32 chars/line, 2 lines, 17-20 CPS, 1-5 s) or 'children' (42 chars/line, 13-17 CPS). |
| srt_text | string | yes | Full text of the .srt or .vtt file. |
No output schema declared.
No examples provided.
How do I install the Rast Creator Tools MCP server?
Rast Creator Tools is a hosted endpoint at https://rast-creator-tools-mcp.studio-c25.workers.dev/v1/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.
remote · rast-creator-tools-mcp.studio-c25.workers.dev
claude mcp add --transport http bewoai-rast-creator-tools 'https://rast-creator-tools-mcp.studio-c25.workers.dev/v1/mcp'
What is the Rast Creator Tools MCP server?
Rast Creator Tools is an MCP server listed in the public MCP registry as io.github.bewoai/rast-creator-tools. Short-form video tools: Reels/TikTok/Shorts safe zones, bitrate math, SRT checks, export settings. This page covers its hosted endpoint (https://rast-creator-tools-mcp.studio-c25.workers.dev/v1/mcp).
Is the Rast Creator Tools MCP server safe to use?
Rast Creator Tools scores 66 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 Rast Creator Tools MCP server expose?
Rast Creator Tools exposes 5 tools: get_safe_zone, check_text_position, calculate_bitrate, validate_srt, export_settings. Their descriptions and schemas cost roughly 1,341 tokens of context every time the server is loaded.
Does the Rast Creator Tools MCP server require authentication?
No. We connected to Rast Creator Tools without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Rast Creator Tools MCP server still maintained?
Rast Creator Tools 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.