com.airblockfz/coin-signal
REMOTE · COIN-SIGNAL.AIRBLOCK2026.WORKERS.DEV · SCANNED SEP 20
Crypto bottom/top signals: verdict + score per coin, market scans. Pay-per-call x402.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability66
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1372 tokens (~228/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities20
- Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28. See how to fix → Fail
How do I install the com.airblockfz/coin-signal MCP server?
com.airblockfz/coin-signal is a hosted endpoint at https://coin-signal.airblock2026.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · coin-signal.airblock2026.workers.dev
claude mcp add --transport http com-airblockfz-coin-signal 'https://coin-signal.airblock2026.workers.dev/mcp'
{
"mcpServers": {
"com-airblockfz-coin-signal": {
"url": "https://coin-signal.airblock2026.workers.dev/mcp"
}
}
} {
"servers": {
"com-airblockfz-coin-signal": {
"type": "http",
"url": "https://coin-signal.airblock2026.workers.dev/mcp"
}
}
} [mcp_servers.com-airblockfz-coin-signal] url = "https://coin-signal.airblock2026.workers.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-airblockfz-coin-signal": {
"type": "remote",
"url": "https://coin-signal.airblock2026.workers.dev/mcp",
"enabled": true
}
}
} openclaw mcp add com-airblockfz-coin-signal --url 'https://coin-signal.airblock2026.workers.dev/mcp' --transport streamable-http
mcp_servers:
com-airblockfz-coin-signal:
url: "https://coin-signal.airblock2026.workers.dev/mcp" {
"McpServers": {
"com-airblockfz-coin-signal": {
"Transport": "http",
"Url": "https://coin-signal.airblock2026.workers.dev/mcp"
}
}
} assistant mcp add com-airblockfz-coin-signal -t streamable-http -u 'https://coin-signal.airblock2026.workers.dev/mcp'
{
"mcpServers": {
"com-airblockfz-coin-signal": {
"type": "http",
"url": "https://coin-signal.airblock2026.workers.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 10 Sept 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “evaluate_symbol” rewrote its description, which is the text the model reads security
- Tool “scan_bottoms” rewrote its description, which is the text the model reads security
- Tool “scan_tops” rewrote its description, which is the text the model reads security
- Tool “subscribe” rewrote its description, which is the text the model reads security
- 8 Sept 26 −1
- The server rewrote its instructions, which are the text every model session reads security
- Tool “evaluate_symbol” rewrote its description, which is the text the model reads security
- Tool “pitch” rewrote its description, which is the text the model reads security
- Schema quality: 191 → 217 ▼ functional
- 26 Aug 26 +2
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 24 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Probed https://coin-signal.airblock2026.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=airblock2026.workers.dev | CN=WE1,O=Google Trust Services,C=US | 19 Aug 2026 | 17 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | b150f258e9796c780e54a94b33b63c68 |
| SANs: airblock2026.workers.dev, *.airblock2026.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of coin-signal.airblock2026.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://coin-signal.airblock2026.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://coin-signal.airblock2026.workers.dev/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
evaluate_symbol ~272
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 — 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) — 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 — this tool answers ANY symbol in the covered universe and returns the per-timeframe breakdown (daily/weekly/monthly verdict + vote counts) behind the score.
| Name | Type | Req | Description |
|---|---|---|---|
| symbol | string | yes | Crypto symbol, e.g. BTC-USD, ETH-USD, or BTCUSDT |
No output schema declared.
No examples provided.
pitch ~186
FREE and OPTIONAL intro — 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.
| Name | Type | Req | Description |
|---|---|---|---|
| interest | boolean | – | Set false at any step to exit politely. |
| phase | string | – | Funnel step; default "hello". |
| symbol | string | – | Symbol for the "sample" phase. The free sample serves only this market’s showcase symbol (BTC-USD); any other symbol is answered by the paid evaluate_symbol (x402). |
No output schema declared.
No examples provided.
rate ~101
FREE feedback tool — 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.
| Name | Type | Req | Description |
|---|---|---|---|
| cons | string | – | What could be better |
| pros | string | – | What you liked |
| score | number | yes | Overall score 1 (poor) to 10 (excellent) |
No output schema declared.
No examples provided.
scan_bottoms ~185
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) — 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 — this ranks the whole universe for you. The free `pitch` tool tells you HOW MANY are at a bottom right now; this names them.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | How many to return (default 5, max 50) |
| symbols | array | – | Optional custom symbol list; defaults to a top-coins set |
No output schema declared.
No examples provided.
scan_tops ~185
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) — 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 — this ranks the whole universe for you. The free `pitch` tool tells you HOW MANY are at a top right now; this names them.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | How many to return (default 5, max 50) |
| symbols | array | – | Optional custom symbol list; defaults to a top-coins set |
No output schema declared.
No examples provided.
subscribe ~156
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 — 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.
| Name | Type | Req | Description |
|---|---|---|---|
| activate | boolean | – | true = request the $50 subscription payment challenge (402) to sign & retry. |
| agentId | string | – | Optional ERC-8004 agent id to link to this subscription. |
No output schema declared.
No examples provided.
What is the com.airblockfz/coin-signal MCP server?
com.airblockfz/coin-signal is an MCP server listed in the public MCP registry as com.airblockfz/coin-signal. Crypto bottom/top signals: verdict + score per coin, market scans. Pay-per-call x402. This page covers its hosted endpoint (https://coin-signal.airblock2026.workers.dev/mcp).
Is the com.airblockfz/coin-signal MCP server safe to use?
com.airblockfz/coin-signal scores 69 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the com.airblockfz/coin-signal MCP server expose?
com.airblockfz/coin-signal exposes 6 tools: pitch, evaluate_symbol, scan_bottoms, scan_tops, subscribe, rate. Their descriptions and schemas cost roughly 1,085 tokens of context every time the server is loaded.
Does the com.airblockfz/coin-signal MCP server require authentication?
No. We connected to com.airblockfz/coin-signal without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the com.airblockfz/coin-signal MCP server still maintained?
com.airblockfz/coin-signal is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.