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useSignal

QR codes, JSON diff/format, hashes, JWT, cron, timestamps, placeholders, flowcharts, forms, regex.

Connector by sanket-naik · GitHub account verified by the MCP Registry

IndexedMITRemote (HTTP)
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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/sanket-naik-usesignal

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://www.usesignal.dev/mcp Remote (HTTP)

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About

QR codes, JSON diff/format, hashes, JWT, cron, timestamps, placeholders, flowcharts, forms, regex.

Reviews

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No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
12 read · 0 write · 0 deleteRead-only
Secrets
None asked for
Install scripts
Nothing to install (hosted)
Runs as
Hosted (remote endpoint)

Tools by what they do 12

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 12 · Look things up without changing anything.

  • usesignal_convert_timestamp
  • usesignal_diff_json
  • usesignal_encode_decode
  • usesignal_explain_cron
  • usesignal_flowchart
  • usesignal_format_json
  • usesignal_generate_colors
  • usesignal_generate_form
  • usesignal_generate_qr
  • usesignal_open_workbench
  • usesignal_placeholder_image
  • usesignal_test_regex

Network hosts it talks to 1

  • usesignal.dev · found in remote endpoint, install command

Tools (12)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • usesignal_convert_timestampread-only

    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_diff_jsonread-only

    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_encode_decoderead-only

    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_explain_cronread-only

    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_flowchartread-only

    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_format_jsonread-only

    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.

  • usesignal_generate_colorsread-only

    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_formread-only

    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_qrread-only

    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_workbenchOpen useSignal workbenchread-only

    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_imageread-only

    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_regexread-only

    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.

Signals

Stars
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Forks
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Open issues
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Last commit
Oct 3, 2026 (26 days ago)
Last release
Oct 3, 2026 (26 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name
io.github.sanket-naik/usesignal
Version
0.2.0
Auth
Auth not stated
License
MIT
Repository
github.com/sanket-naik/usesignal-claude-plugin
Website
www.usesignal.dev/
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registrygithub-graphql
Cite this page

useSignal MCP server. Agent Mart. https://agentmart.dev/connectors/sanket-naik-usesignal (last updated 2026-10-24)