Swatch
REMOTE · SWATCH.CLAWHARD.COM
Check WCAG color contrast, fix failing colors, build 50-950 palettes. No account.
Available components
Last scanned (20 hours ago)
Scores higher than 56% of remote servers
Reachable. Last reached 4 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 check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- 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 Usability87
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 1088 tokens (~90/item across 12 items; 6 tools + 6 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 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
- Supports UI / widget rendering.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
- The server rewrote its instructions, which are the text every model session reads security
- Server version: 1.0.0 → 1.0.1 functional
- 3 Nov 26 0
- Stability: unverified → 0.03 ▲ functional
- 2 Nov 26 69
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 4 Nov 2026 · Probed https://swatch.clawhard.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=clawhard.com | CN=WE1,O=Google Trust Services,C=US | 2 Nov 2026 | 31 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 1c23e342fc92d9dc0e8df74645bb97cb |
| SANs: clawhard.com, swatch.clawhard.com, *.swatch.clawhard.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 insecure
Validation of swatch.clawhard.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| clawhard.com. | 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 |
| Header | Value |
|---|---|
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://swatch.clawhard.com/mcp | Verified | 200 | |
| http (plaintext) | http://swatch.clawhard.com/mcp | Served over HTTP | 200 |
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 →
swatch_check_contrast Check the WCAG contrast of a text and background color ~177
Use when the user asks whether a color combination is readable or accessible, passes WCAG AA or AAA, or has enough contrast (text on a background, button, badge, link color). Returns the exact contrast ratio, pass or fail for normal text, large text and UI components at AA and AAA, the APCA lightness contrast and a plain note. Colors can be hex, rgb(), hsl() or CSS names. Example: {"foreground": "#777777", "background": "#ffffff"}. Language models cannot compute this reliably, so call it instead of guessing.
| Name | Type | Req | Description |
|---|---|---|---|
| background | string | yes | Background color, e.g. "#ffffff". |
| foreground | string | yes | Text (or icon) color, e.g. "#767676" or "rgb(20 20 20)" or "tomato". |
No output schema declared.
No examples provided.
swatch_check_pairs Check contrast for many color pairs at once ~121
Use when the user has a whole design system, theme or stylesheet and wants every text and background pair checked for accessibility in one go. Takes up to 50 pairs and returns the ratio and AA and AAA results for each, with a count of failures. Example: {"pairs": [{"foreground": "#777", "background": "#fff", "label": "muted text"}, {"foreground": "#fff", "background": "#ff5a1f", "label": "button"}]}.
| Name | Type | Req | Description |
|---|---|---|---|
| pairs | array | yes | Pairs to check. |
No output schema declared.
No examples provided.
swatch_convert_color Convert a color between hex, rgb, hsl and oklch ~93
Use when the user asks to convert a color between hex, RGB, HSL and OKLCH, or asks what a color is called or how light it is. Returns all formats, the relative luminance and the nearest CSS color name. Example: {"color": "#ff5a1f"}. Exact math, so prefer it to converting by hand.
| Name | Type | Req | Description |
|---|---|---|---|
| color | string | yes | Any CSS color. |
No output schema declared.
No examples provided.
swatch_fix_contrast Find the nearest accessible color that passes contrast ~139
Use when a color pair fails contrast and the user wants the smallest change that makes it pass, such as "make this gray text accessible without changing the look". Returns the closest text color on that background that reaches the target (AA, AAA, AA-large or ui), and separately the closest background, keeping the hue. Example: {"foreground": "#777777", "background": "#ffffff", "target": "AA"}. Returns already_passes if nothing needs to change.
| Name | Type | Req | Description |
|---|---|---|---|
| background | string | yes | Current background color. |
| foreground | string | yes | Current text color. |
| target | string | – | Contrast target. Default AA. |
No output schema declared.
No examples provided.
swatch_make_scale Build a 50-950 color palette from one color ~132
Use when the user asks for a palette, shades, tints, a design-token scale or a Tailwind-style 50 to 950 ramp from a brand color. Returns 11 steps that keep the hue, with the hex, contrast on white and on black, and the best text color for each step. Example: {"color": "#ff5a1f", "name": "brand"}.
| Name | Type | Req | Description |
|---|---|---|---|
| color | string | yes | Base color, e.g. "#ff5a1f". |
| name | string | – | Token name used in the CSS and Tailwind output. Default "brand". |
No output schema declared.
No examples provided.
swatch_pick_text_color Pick black or white text for a background ~90
Use when the user asks what text color (black or white) to put on a given background, button or brand color so it is readable. Returns the better of black or white with both contrast ratios, the WCAG grade and a softer near-black option. Example: {"background": "#ff5a1f"}.
| Name | Type | Req | Description |
|---|---|---|---|
| background | string | yes | The surface color the text sits on. |
No output schema declared.
No examples provided.
How do I install the Swatch MCP server?
Swatch is a hosted endpoint at https://swatch.clawhard.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 · swatch.clawhard.com
claude mcp add --transport http com-clawhard-swatch 'https://swatch.clawhard.com/mcp'
What is the Swatch MCP server?
Swatch is an MCP server listed in the public MCP registry as com.clawhard/swatch. Check WCAG color contrast, fix failing colors, build 50-950 palettes. No account. This page covers its hosted endpoint (https://swatch.clawhard.com/mcp).
Is the Swatch MCP server safe to use?
Swatch scores 70 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 Swatch MCP server expose?
Swatch exposes 6 tools: swatch_check_contrast, swatch_fix_contrast, swatch_pick_text_color, swatch_make_scale, swatch_convert_color, swatch_check_pairs. Their descriptions and schemas cost roughly 752 tokens of context every time the server is loaded.
Does the Swatch MCP server require authentication?
No. We connected to Swatch without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Swatch MCP server still maintained?
Swatch is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.