Delta Signal

Reliability

Latest check failed 7 h ago: initialize returned HTTP 503

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How to connect

Add it to any MCP client that supports remote servers.

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

5 tools

• 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 optionally as an SSTV picture, a ggwave data chirp or modem tones. Returns a download link (kept 7 days) and a…

• 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 to render), ggwave, modem text and SSTV pictures (returned as PNG).

• 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 message (matches: true/false, or null if no expected_message given). Cheaper than full decode — use it when you only need…

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