Spritesheet Forge
REMOTE · MCP.CLAWSTUDIOUO.COM · SCANNED SEP 20
Game-dev sprite tools: PNG/GIF to spritesheet, split, trim, animate. OAuth-authenticated MCP server.
Available components
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 Security86
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, but the challenge carries no valid RFC 9728 metadata, so a client cannot discover where to get a token. See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
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 2833 tokens (~354/item across 8 items; 8 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 Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage94
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 79% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities20
- Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28. See how to fix → Fail
How do I install the Spritesheet Forge MCP server?
Spritesheet Forge is a hosted endpoint at https://mcp.clawstudiouo.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.
remote · mcp.clawstudiouo.com
claude mcp add --transport http laxy9887-spritesheet-forge 'https://mcp.clawstudiouo.com/mcp'
{
"mcpServers": {
"laxy9887-spritesheet-forge": {
"url": "https://mcp.clawstudiouo.com/mcp"
}
}
} {
"servers": {
"laxy9887-spritesheet-forge": {
"type": "http",
"url": "https://mcp.clawstudiouo.com/mcp"
}
}
} [mcp_servers.laxy9887-spritesheet-forge] url = "https://mcp.clawstudiouo.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"laxy9887-spritesheet-forge": {
"type": "remote",
"url": "https://mcp.clawstudiouo.com/mcp",
"enabled": true
}
}
} openclaw mcp add laxy9887-spritesheet-forge --url 'https://mcp.clawstudiouo.com/mcp' --transport streamable-http
mcp_servers:
laxy9887-spritesheet-forge:
url: "https://mcp.clawstudiouo.com/mcp" {
"McpServers": {
"laxy9887-spritesheet-forge": {
"Transport": "http",
"Url": "https://mcp.clawstudiouo.com/mcp"
}
}
} assistant mcp add laxy9887-spritesheet-forge -t streamable-http -u 'https://mcp.clawstudiouo.com/mcp'
{
"mcpServers": {
"laxy9887-spritesheet-forge": {
"type": "http",
"url": "https://mcp.clawstudiouo.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 26 Aug 26 +2
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 24 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 26 Jul 26 0
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 20 Sept 2026 · Probed https://mcp.clawstudiouo.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=clawstudiouo.com | CN=WE1,O=Google Trust Services,C=US | 30 Aug 2026 | 28 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | d708dac8c6b8a1d31396d46fe9324d99 |
| SANs: clawstudiouo.com, mcp.clawstudiouo.com, *.mcp.clawstudiouo.com | ||||||
| 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 secure
Validation of mcp.clawstudiouo.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| clawstudiouo.com. | present | 2371 | 13 | Verified |
| mcp.clawstudiouo.com. | Verified address RRset verified with the apex keys |
Authentication Challenged, unverified
The endpoint asked for a token, but we could not retrieve and validate the RFC 9728 metadata that tells a client how to obtain one.
| Result | Challenged, unverified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer realm="https://mcp.clawstudiouo.com"
Bearer realm="https://mcp.clawstudiouo.com"Protected resource metadata
| Retrieved | No |
|---|---|
| Problem | no_resource_metadata |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.clawstudiouo.com/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.clawstudiouo.com/mcp | HTTPS enforced | 301 | https://mcp.clawstudiouo.com/mcp |
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 →
frames_to_animation ~480
Assemble multiple PNG files into an animated GIF or animated WebP.
| Name | Type | Req | Description |
|---|---|---|---|
| bg_fill_color | string | – | Fill color for resize=fill. Hex #RRGGBB. Default: #000000 |
| duration | integer | – | Frame duration in ms (10-10000). Default: 100 |
| file_name_order | boolean | – | Order frames by the numeric _N suffix in each filename (e.g. frame_00.png, frame_01.png) instead of by array order. REQUIRES every input filename to end with _N.<ext> — the name is taken from the URL… |
| files | array | yes | PNG frames — HTTPS URLs, data URIs, or output URLs from previous tool calls (pass directly, no re-encoding needed). For local files < 4 MB each: base64-encode the bytes and prepend "data:image/png;ba… |
| loop | integer | – | Loop count. 0 = infinite. Default: 0 |
| lossless | boolean | – | WebP lossless mode. Default: false |
| output_format | string | – | Output format. Default: gif |
| quality | integer | – | WebP lossy quality 0-100. Default: 80 |
| resize | string | – | Dimension mismatch handling. Default: transparent |
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | yes | MIME type of the output file (image/png, image/gif, application/zip, etc.) |
| expires_at | string | yes | ISO 8601 expiry timestamp |
| quota | object | yes | – |
| size_bytes | number | yes | Output file size in bytes |
| url | string | yes | Download URL for the output file (expires in 1 hour) |
No examples provided.
gif_to_frames ~219
Extract all frames from a GIF and return them as individual PNGs in a ZIP archive.
| Name | Type | Req | Description |
|---|---|---|---|
| bg_color | string | – | "auto" or hex "#RRGGBB" |
| file | string | yes | GIF file — HTTPS URL, data URI, or output URL from a previous tool call (pass directly, no re-encoding needed). For local files < ~185 KB: base64-encode the bytes and prepend "data:image/gif;base64,"… |
| remove_bg | boolean | – | Remove background from each frame. Default: false |
| tolerance | integer | – | Background removal threshold 0-255. Default: 30 |
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | yes | MIME type of the output file (image/png, image/gif, application/zip, etc.) |
| expires_at | string | yes | ISO 8601 expiry timestamp |
| quota | object | yes | – |
| size_bytes | number | yes | Output file size in bytes |
| url | string | yes | Download URL for the output file (expires in 1 hour) |
No examples provided.
gif_to_spritesheet ~262
Convert a GIF animation into a spritesheet PNG with all frames arranged in a grid. Optionally remove the background.
| Name | Type | Req | Description |
|---|---|---|---|
| bg_color | string | – | "auto" or hex "#RRGGBB". Default: "auto" |
| columns | integer | – | Grid columns. Auto-calculated if omitted. |
| file | string | yes | GIF file — HTTPS URL, data URI, or output URL from a previous tool call (pass directly, no re-encoding needed). For local files < ~185 KB: base64-encode the bytes and prepend "data:image/gif;base64,"… |
| padding | integer | – | Pixel gap between frames. Default: 0 |
| remove_bg | boolean | – | Remove background from each frame. Default: false |
| tolerance | integer | – | Background removal threshold 0-255. Default: 30 |
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | yes | MIME type of the output file (image/png, image/gif, application/zip, etc.) |
| expires_at | string | yes | ISO 8601 expiry timestamp |
| quota | object | yes | – |
| size_bytes | number | yes | Output file size in bytes |
| url | string | yes | Download URL for the output file (expires in 1 hour) |
No examples provided.
png_to_spritesheet ~585
Merge multiple PNG files into a single spritesheet. Supports grid, horizontal, vertical, and packed (bin-packed) layouts with optional TexturePacker-compatible JSON metadata. Returns a download URL.
| Name | Type | Req | Description |
|---|---|---|---|
| align | string | – | – |
| bg_color | string | – | "transparent" or hex "#RRGGBB" |
| cell_height | integer | – | Required when cell_mode=fixed |
| cell_mode | string | – | Cell sizing mode. Default: auto_max |
| cell_width | integer | – | Required when cell_mode=fixed |
| columns | integer | – | Grid columns. Auto-calculated if omitted. |
| extrude | integer | – | Extrude outermost pixels by N px per frame |
| file_name_order | boolean | – | Order frames by the numeric _N suffix in each filename (e.g. frame_00.png, frame_01.png) instead of by array order. REQUIRES every input filename to end with _N.<ext> — the name is taken from the URL… |
| files | array | yes | PNG files — HTTPS URLs, data URIs, or output URLs from previous tool calls (pass directly, no re-encoding needed). For local files < ~185 KB each: base64-encode the bytes and prepend "data:image/png;… |
| fit_mode | string | – | – |
| layout | string | – | Frame arrangement. Default: grid |
| metadata_format | string | – | Atlas metadata format. Required (non-none) when layout=packed |
| padding | integer | – | Pixel gap between frames |
| power_of_2 | boolean | – | Pad output to next power of 2 |
| trim_input | boolean | – | Auto-trim transparent edges before compositing |
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | yes | MIME type of the output file (image/png, image/gif, application/zip, etc.) |
| expires_at | string | yes | ISO 8601 expiry timestamp |
| quota | object | yes | – |
| size_bytes | number | yes | Output file size in bytes |
| url | string | yes | Download URL for the output file (expires in 1 hour) |
No examples provided.
server_info ~57
Returns this server's runtime configuration: upload endpoint URL, output file TTL, file size limits, and base64 encoding rules. Call this before working with large files (≥ 4 MB) or when building multi-step workflows that chain tool outputs.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| base64_threshold_bytes | number | yes | Files smaller than this can be sent as base64 data URIs |
| file_input_rules | object | yes | Guidance for agents on how to pass file inputs |
| max_file_bytes | number | yes | Maximum accepted file size in bytes |
| output_ttl_seconds | number | yes | Seconds until output files expire |
| upload_url | string | yes | URL for uploading files via multipart/form-data (Bearer token required) |
No examples provided.
split_spritesheet ~325
Slice a spritesheet PNG into individual frames, generate TexturePacker-compatible atlas JSON, or both. Provide columns+rows (grid mode) or cell_width+cell_height (cell mode).
| Name | Type | Req | Description |
|---|---|---|---|
| cell_height | integer | – | Cell height in px (cell mode) |
| cell_width | integer | – | Cell width in px (cell mode) |
| column_range | string | – | e.g. "0-5" or "2" |
| columns | integer | – | Grid columns (grid mode) |
| file | string | yes | Spritesheet PNG — HTTPS URL, data URI, or output URL from a previous tool call (pass directly, no re-encoding needed). For local files < 4 MB: base64-encode the bytes and prepend "data:image/png;base… |
| frame_count | integer | – | – |
| metadata_format | string | – | – |
| output | string | – | Default: frames |
| padding | integer | – | – |
| row_range | string | – | – |
| rows | integer | – | Grid rows (grid mode) |
| skip_empty | boolean | – | Remove fully transparent frames. Default: true |
| trim_bottom | integer | – | – |
| trim_left | integer | – | – |
| trim_right | integer | – | – |
| trim_top | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | yes | MIME type of the output file (image/png, image/gif, application/zip, etc.) |
| expires_at | string | yes | ISO 8601 expiry timestamp |
| quota | object | yes | – |
| size_bytes | number | yes | Output file size in bytes |
| url | string | yes | Download URL for the output file (expires in 1 hour) |
No examples provided.
spritesheet_to_animation ~425
Slice a spritesheet PNG into frames and produce an animated GIF or WebP. Provide columns+rows (grid mode) or cell_width+cell_height (cell mode).
| Name | Type | Req | Description |
|---|---|---|---|
| cell_height | integer | – | Cell height in px (cell mode) |
| cell_width | integer | – | Cell width in px (cell mode) |
| column_range | string | – | e.g. "0-5" or "2" |
| columns | integer | – | Grid columns (grid mode) |
| duration | integer | – | Frame duration in ms. Default: 100 |
| file | string | yes | Spritesheet PNG — HTTPS URL, data URI, or output URL from a previous tool call (pass directly, no re-encoding needed). For local files < ~185 KB: base64-encode the bytes and prepend "data:image/png;b… |
| frame_count | integer | – | Actual frame count for incomplete last row |
| loop | integer | – | Loop count. 0 = infinite. Default: 0 |
| lossless | boolean | – | WebP lossless. Default: false |
| output_format | string | – | Default: gif |
| padding | integer | – | Pixel gap between cells. Default: 0 |
| quality | integer | – | WebP quality 0-100. Default: 80 |
| row_range | string | – | – |
| rows | integer | – | Grid rows (grid mode) |
| skip_empty | boolean | – | Auto-remove fully transparent frames. Default: true |
| trim_bottom | integer | – | – |
| trim_left | integer | – | – |
| trim_right | integer | – | – |
| trim_top | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | yes | MIME type of the output file (image/png, image/gif, application/zip, etc.) |
| expires_at | string | yes | ISO 8601 expiry timestamp |
| quota | object | yes | – |
| size_bytes | number | yes | Output file size in bytes |
| url | string | yes | Download URL for the output file (expires in 1 hour) |
No examples provided.
trim_png ~212
Crop transparent edges from one or more PNG files. Single file returns PNG; multiple files return a ZIP.
| Name | Type | Req | Description |
|---|---|---|---|
| files | array | yes | PNG files — HTTPS URLs, data URIs, or output URLs from previous tool calls (pass directly, no re-encoding needed). For local files < ~185 KB each: base64-encode the bytes and prepend "data:image/png;… |
| padding | integer | – | Transparent margin to preserve around trimmed content. Default: 0 |
| threshold | integer | – | Alpha threshold 0-255. Pixels with alpha ≤ threshold are trimmed. Default: 0 |
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | yes | MIME type of the output file (image/png, image/gif, application/zip, etc.) |
| expires_at | string | yes | ISO 8601 expiry timestamp |
| quota | object | yes | – |
| size_bytes | number | yes | Output file size in bytes |
| url | string | yes | Download URL for the output file (expires in 1 hour) |
No examples provided.
What is the Spritesheet Forge MCP server?
Spritesheet Forge is an MCP server listed in the public MCP registry as io.github.LAXY9887/spritesheet-forge. Game-dev sprite tools: PNG/GIF to spritesheet, split, trim, animate. OAuth-authenticated MCP server. This page covers its hosted endpoint (https://mcp.clawstudiouo.com/mcp).
Is the Spritesheet Forge MCP server safe to use?
Spritesheet Forge scores 84 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 Spritesheet Forge MCP server expose?
Spritesheet Forge exposes 8 tools: server_info, png_to_spritesheet, split_spritesheet, trim_png, gif_to_spritesheet, and 3 more. Their descriptions and schemas cost roughly 2,565 tokens of context every time the server is loaded.
Does the Spritesheet Forge MCP server require authentication?
Yes. Spritesheet Forge asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the Spritesheet Forge MCP server still maintained?
Spritesheet Forge is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.