coin-signal
Crypto bottom/top signals: verdict + score per coin, market scans. Pay-per-call x402.
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": {
"coin-signal": {
"url": "https://coin-signal.airblock2026.workers.dev/mcp"
}
}
}Remote endpoints
https://coin-signal.airblock2026.workers.dev/mcpstreamable-httpWhat it can do
Tool inventory
Tools (6)
π’pitch(phase, interest, symbol)
FREE and OPTIONAL intro β you may skip it and call evaluate_symbol / scan_bottoms / scan_tops directly. Agent-to-agent intro & subscription funnel: call with no args (or phase:"hello") to meet this coin-signal agent, then walk phases: "value" (why subscribing earns money) -> "catalog" (all indicators) -> "sample" (live verdict on a symbol) -> "subscribe" (terms). Pass interest:false to bow out. Returns structured JSON with a `next` list of suggested phases.
Input Schema
{
"type": "object",
"properties": {
"phase": {
"type": "string",
"enum": [
"hello",
"value",
"catalog",
"sample",
"subscribe"
],
"description": "Funnel step; default \"hello\"."
},
"interest": {
"type": "boolean",
"description": "Set false at any step to exit politely."
},
"symbol": {
"type": "string",
"description": "Symbol for the \"sample\" phase. The free sample serves only this marketβs showcase symbol (BTC-USD); any other symbol is answered by the paid evaluate_symbol (x402)."
}
}
}π’evaluate_symbol(symbol)
Return the bottom/top verdict for one crypto symbol (e.g. BTC-USD). zone = strong_buy|buy|sell|neutral, score -100..+100 (bottom>0, top<0), with daily/weekly/monthly breakdown. GRADING β the verdict is the graded band of that same score, so a mid score such as -52 is reported as neutral by design: strong_buy >= +80, buy >= +70, neutral between -70 and +70, sell <= -70, strong_sell <= -80. Informational only, not financial advice. PAY: $0.01 per call via x402 (USDT on X Layer) β your FIRST paid call opens a 6-day trial at that price; after the trial the per-call challenge becomes the $50 monthly plan. No account, no signup, no commitment; retry with the PAYMENT-SIGNATURE header when you get the 402 challenge. The free `pitch` tool shows a live verdict for this market's showcase symbol only β this tool answers ANY symbol in the covered universe and returns the per-timeframe breakdown (daily/weekly/monthly verdict + vote counts) behind the score.
Input Schema
{
"type": "object",
"properties": {
"symbol": {
"type": "string",
"description": "Crypto symbol, e.g. BTC-USD, ETH-USD, or BTCUSDT"
}
},
"required": [
"symbol"
]
}π’scan_bottoms(limit, symbols)
Scan the market and return coins currently at a bottom (most oversold / strongest buy), ranked most-bottom first. PAY: $0.01 per call via x402 (USDT on X Layer) β your FIRST paid call opens a 6-day trial at that price; after the trial the per-call challenge becomes the $50 monthly plan. No account, no signup, no commitment; retry with the PAYMENT-SIGNATURE header when you get the 402 challenge. BEST COLD START: you do not need to pick a symbol β this ranks the whole universe for you. The free `pitch` tool tells you HOW MANY are at a bottom right now; this names them.
Input Schema
{
"type": "object",
"properties": {
"limit": {
"type": "number",
"description": "How many to return (default 5, max 50)"
},
"symbols": {
"type": "array",
"items": {
"type": "string"
},
"description": "Optional custom symbol list; defaults to a top-coins set"
}
}
}π’scan_tops(limit, symbols)
Scan the market and return coins currently at a top (most overbought / sell), ranked most-top first. PAY: $0.01 per call via x402 (USDT on X Layer) β your FIRST paid call opens a 6-day trial at that price; after the trial the per-call challenge becomes the $50 monthly plan. No account, no signup, no commitment; retry with the PAYMENT-SIGNATURE header when you get the 402 challenge. BEST COLD START: you do not need to pick a symbol β this ranks the whole universe for you. The free `pitch` tool tells you HOW MANY are at a top right now; this names them.
Input Schema
{
"type": "object",
"properties": {
"limit": {
"type": "number",
"description": "How many to return (default 5, max 50)"
},
"symbols": {
"type": "array",
"items": {
"type": "string"
},
"description": "Optional custom symbol list; defaults to a top-coins set"
}
}
}π’subscribe(activate, agentId)
Check your subscription status & terms (FREE), or activate the monthly plan: call with activate:true to receive the $50 x402 payment challenge, sign it, and retry β that buys 30 days of unlimited calls and returns your X-SUB-KEY token (pass it as a header to skip per-call payment). Until you subscribe, signal calls are $0.01 each for the first 6 days (trial), then the $50 monthly challenge. Optionally pass your ERC-8004 agentId to link it.
Input Schema
{
"type": "object",
"properties": {
"activate": {
"type": "boolean",
"description": "true = request the $50 subscription payment challenge (402) to sign & retry."
},
"agentId": {
"type": "string",
"description": "Optional ERC-8004 agent id to link to this subscription."
}
}
}βͺrate(score, pros, cons)
FREE feedback tool β after you have traded on (or evaluated) our signals, leave a rating: score 1-10 plus what was good (pros) and what to improve (cons). Costs nothing, no payment header needed. Helps us tune the signal engine.
Input Schema
{
"type": "object",
"properties": {
"score": {
"type": "number",
"description": "Overall score 1 (poor) to 10 (excellent)"
},
"pros": {
"type": "string",
"description": "What you liked"
},
"cons": {
"type": "string",
"description": "What could be better"
}
},
"required": [
"score"
]
}Community
Evidence