SSTV Decoder
Decode an SSTV audio recording and anchor its fingerprint and image hash to the Knox event chain.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"sstv-decoder": {
"url": "https://bonissystems.com/api/knox/agents/sstv-decoder/mcp"
}
}
}Remote endpoints
https://bonissystems.com/api/knox/agents/sstv-decoder/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
⚪decode_sstv(name, audioBase64, audioFormat, sampleRate, capture)
Demodulate a presented slow-scan-television (SSTV) audio recording, anchor the audio fingerprint and the decoded image hash to the Knox event chain, and return a receipt bundle (Knox anchor + C2PA-aligned envelope + FRE 902(13)/(14)-shape affidavit). Audio bytes are NOT retained — only the SHA-256 fingerprint and the decoded image are anchored. Bonis Systems does not capture audio on its own; the audio must be presented by the caller (a public WebSDR recording, a customer-controlled SDR capture they consent to submit, or audio they own). Phase 1 supports Martin M1 (VIS code 0x2C, 320×256 RGB). Other VIS codes return mode = 'unsupported' with detected hex. Requires a Knox Bearer API key on the Authorization header — unauthenticated calls are rejected.
Input Schema
{
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Display name for the recording (max 256 chars)."
},
"audioBase64": {
"type": "string",
"description": "Base64-encoded audio. Either a complete WAV file (RIFF/WAVE, 8/16/24-bit PCM or 32-bit IEEE float, mono or stereo, 4-192 kHz) or raw 16-bit signed little-endian mono PCM samples."
},
"audioFormat": {
"type": "string",
"enum": [
"wav",
"pcm16-mono"
],
"description": "Audio container ('wav' default, or 'pcm16-mono')."
},
"sampleRate": {
"type": "integer",
"minimum": 4000,
"maximum": 192000,
"description": "Required when audioFormat = 'pcm16-mono'."
},
"capture": {
"type": "object",
"description": "Optional capture-context metadata.",
"properties": {
"sourceUrl": {
"type": "string",
"description": "Audio source URL. Hashed before anchoring; the raw URL is not committed."
},
"capturedAt": {
"type": "string",
"description": "ISO timestamp when the audio was captured."
},
"operatorClaim": {
"type": "string",
"description": "Claim about who operated the receiver."
},
"callsignClaim": {
"type": "string",
"description": "Transmitting callsign claim. Recorded as a claim only — the agent does not verify callsign-to-operator binding."
}
}
}
},
"required": [
"name",
"audioBase64"
],
"additionalProperties": false
}🟢verify_sstv_decode(hash)
Verify a previously anchored SSTV-decode record. Given a SHA-256 anchor hash (the payload_hash from a prior decode_sstv call), return the anchor record, predecessor hash, sequence number, and timestamp. Public — no authentication required. The verification path itself is also accessible at GET /api/knox/verify?hash=<hash>.
Input Schema
{
"type": "object",
"properties": {
"hash": {
"type": "string",
"description": "SHA-256 anchor hash (64 lowercase hex chars).",
"pattern": "^[a-fA-F0-9]{64}$"
}
},
"required": [
"hash"
],
"additionalProperties": false
}Community
Evidence