org.daxfoundation.signal/delta-signal

down checked 2026-11-09T02:37:36.727Z

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Publisher-provided title

Delta Signal

Publisher-provided description

Audio steganography & watermarking. Encode/decode hidden messages that survive YouTube re-encoding.

Summary by lookupd

Encodes, decodes and verifies hidden messages in audio files, with some tools free and rendering or decoding priced.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http delta-signal https://signal.daxfoundation.org/mcp

Codex, remote (streamable-http)

codex mcp add delta-signal --url https://signal.daxfoundation.org/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "delta-signal": {
      "url": "https://signal.daxfoundation.org/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (5 tools)

Publisher-provided text

• describe_engine Free. Describe Delta Signal: layers, stings, defaults, limits, presets and prices.
• preview_card Free. Render the SSTV signature card image for a message (PNG) so you can see what the picture sting will carry.
• render_signature Render a Delta Signal audio signature (WAV, 48 kHz) that hides your message: in the heartbeat rhythm, as text in the spectrogram, as an inaudible watermark, and
• decode_audio Decode every Delta Signal layer from a WAV, MP3 or M4A (AAC) file at an https URL: heartbeat cipher, spectral glyph, prime count, watermark (needs the seed used
• verify_signature Verify a Delta Signal audio signature at an https WAV URL: returns which hidden layers are present (found_layers) and whether the audio matches an expected mess

Details

• Version: 0.1.0
• Transports: streamable-http
• Uptime (7 days): 17%
• Median latency: 825 ms
• First indexed: 2026-11-01T10:08:02.950Z
• Last seen in registry: 2026-11-01T10:08:02.950Z
• Website: https://signal.daxfoundation.org

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