# `io.github.sanket-naik/usesignal` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/io.github.sanket-naik/usesignal
- JSON: https://anlyon.dev/api/v1/servers/io.github.sanket-naik/usesignal
- Version: 0.2.0 (active)
- Publisher: io.github.sanket-naik (GitHub account)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/sanket-naik/usesignal-claude-plugin
- Metadata from the official MCP Registry, synced 2026-10-21T18:48:56.810Z

Title and description, as the publisher wrote them:

```untrusted-server-text
useSignal
QR codes, JSON diff/format, hashes, JWT, cron, timestamps, placeholders, flowcharts, forms, regex.
```

Scanned 2026-10-21T19:27:01.468Z over streamable-http.

**12 tools: 9 change things and 3 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 9 | ask |
| Only reads | read | 3 | allow |

## Findings

- **warn** Annotations that disagree with the tool in `usesignal_generate_form` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "usesignal_generate_form" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "usesignal_generate_form" says "generate": a word for a change.
```

- **warn** Annotations that disagree with the tool in `usesignal_generate_colors` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "usesignal_generate_colors" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "usesignal_generate_colors" says "generate": a word for a change.
```

- **warn** Annotations that disagree with the tool in `usesignal_test_regex` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "usesignal_test_regex" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "execute": a word for a change.
```

- **warn** Annotations that disagree with the tool in `usesignal_generate_qr` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "usesignal_generate_qr" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "usesignal_generate_qr" says "generate": a word for a change.
```

- **warn** Annotations that disagree with the tool in `usesignal_convert_timestamp` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "usesignal_convert_timestamp" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "usesignal_convert_timestamp" says "convert": a word for a change.
```

- **warn** Annotations that disagree with the tool in `usesignal_placeholder_image` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "usesignal_placeholder_image" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "create": a word for a change.
```

- **warn** Annotations that disagree with the tool in `usesignal_open_workbench` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "usesignal_open_workbench" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "usesignal_open_workbench" says "open": a word for a change.
```


## Changes things (9)

Creates or changes something that can be changed back. Claude Code: ask.

### `usesignal_convert_timestamp`

- The name "usesignal_convert_timestamp" says "convert": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Convert a Unix timestamp (seconds or milliseconds) or an ISO 8601 date into ISO, UTC, epoch seconds/milliseconds, a relative time and the local time in a given time zone.
```

### `usesignal_encode_decode`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

Description, as the server wrote it:

```untrusted-server-text
Exact text transforms: Base64 encode/decode (UTF-8), URL encode/decode, decode a JWT header and payload with readable exp/iat/nbf dates (the signature is not verified), or hash text with MD5, SHA-1, SHA-256 and SHA-512. Use this instead of computing hashes or Base64 by hand.
```

### `usesignal_flowchart`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

Description, as the server wrote it:

```untrusted-server-text
Turn JavaScript/TypeScript code, arrow steps or Mermaid-style arrows into a flowchart, returned as Mermaid source and an SVG diagram. Steps mode uses one flow per line: "Start -> Validate -> Save" and branches like "Validate -- No --> Show error".
```

### `usesignal_generate_colors`

- The name "usesignal_generate_colors" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Generate light and dark semantic color tokens from a six-digit hex brand color. Returns a shade scale, measured text contrast checks and CSS, JSON and Tailwind exports. This measures listed color pairs only, not whole-page accessibility. Call usesignal_open_workbench with the result input to preview.
```

### `usesignal_generate_form`

- The name "usesignal_generate_form" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Generate an editable form from a JSON object. Returns nested field paths, JSON Schema, HTML, React JSX and config exports. Arrays and nulls use JSON textareas. Values are processed in memory; avoid secrets. To show an interactive preview, call usesignal_open_workbench with this result input.
```

### `usesignal_generate_qr`

- The name "usesignal_generate_qr" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Generate a scannable QR code for a link, text, Wi-Fi network, contact card (vCard), email, SMS, phone number, WhatsApp chat or UPI payment. Returns the encoded payload, an SVG file and a PNG preview image. values by type: url{url}; text{text}; wifi{ssid,password,security:WPA|WEP|nopass,hidden}; vcard{firstName,lastName,phone,email,org,title,website,address}; email{to,subject,body}; sms{phone,message}; phone{phone}; whatsapp{phone,message}; upi{vpa,name,amount,note}.
```

### `usesignal_open_workbench`

- The name "usesignal_open_workbench" says "open": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Show the editable useSignal UI. First call a useSignal data tool, then pass its returned input and matching tool name. Recomputes from validated inputs; no shared state.
```

### `usesignal_placeholder_image`

- The description's first verb is "create": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Create a placeholder image URL (served by usesignal.dev) plus HTML, Markdown and CSS snippets, for mockups, prototypes, seed data and layouts. Width and height up to 4000 px.
```

### `usesignal_test_regex`

- The description's first verb is "execute": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Execute a JavaScript regular expression against text and expected match/non-match test cases. Returns indexed matches and capture groups. Flags use JavaScript semantics. Execution times out after 500ms. Call usesignal_open_workbench with result input to highlight matches.
```

## Only reads (3)

Looks things up and changes nothing. Claude Code: allow.

### `usesignal_diff_json`

- The name "usesignal_diff_json" says "diff": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Compare two JSON documents structurally and list every added, removed and changed value with its JSONPath. Numbers compare exactly. Arrays match by content by default, so an inserted item shows as one addition; use arrays:"position" to compare index by index.
```

### `usesignal_explain_cron`

- The name "usesignal_explain_cron" says "explain": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Explain a standard 5-field cron expression (minute hour day-of-month month day-of-week) in plain English and list its next run times in a given time zone, handling daylight saving time.
```

### `usesignal_format_json`

- The description's first verb is "validate": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Validate, pretty-print or minify JSON, optionally sorting keys. Invalid JSON reports the exact line and column; with repair (default on) it fixes common problems such as trailing commas, single quotes, comments and unquoted keys, and lists each fix.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `usesignal`:

```json
{
  "permissions": {
    "allow": [
      "mcp__usesignal__usesignal_explain_cron",
      "mcp__usesignal__usesignal_diff_json",
      "mcp__usesignal__usesignal_format_json"
    ],
    "ask": [
      "mcp__usesignal__usesignal_generate_form",
      "mcp__usesignal__usesignal_generate_colors",
      "mcp__usesignal__usesignal_test_regex",
      "mcp__usesignal__usesignal_generate_qr",
      "mcp__usesignal__usesignal_encode_decode",
      "mcp__usesignal__usesignal_convert_timestamp",
      "mcp__usesignal__usesignal_placeholder_image",
      "mcp__usesignal__usesignal_flowchart",
      "mcp__usesignal__usesignal_open_workbench"
    ],
    "deny": []
  }
}
```