Xsignal

io.github.philpof102-svg由 GitHub 帳號 philpof102-svg 發布v0.2.1更新於 Nov 2, 2026

x402 pay-per-call data tools for Base agents. Flagship get_intent ABSTAINS instead of guessing.

已驗證Streamable HTTP可網頁執行網頁搜尋與抓取金融

概覽

AI 產生的概覽

針對 Base 代幣的 x402 按次付費資料工具：動能判斷、行情情報、附引用的社群訊號、安全預檢與批次篩選。

可以做什麼
  • 依自訂信心門檻取得 Base 代幣的動能判斷，不確定時回傳棄權
  • 讀取來自公開 DEX 池的 Base 代幣行情：流動性、成交量、價格、池齡、買賣流向
  • 取得依熱度與新鮮度評分並附來源連結的即時 X／社群訊號，可指定主題或自帶貼文
  • 把行情情報與社群訊號融合成一份代幣簡報
  • 對單一代幣做安全加動能的預檢，或一次呼叫篩選最多 10 個代幣的觀察清單
適用情境
適合需要隨選取得 Base 代幣行情、社群與安全判斷、又不想自建資料管線的代理，尤其是希望訊號在沒把握時能拒絕作答而非硬猜的情境。批次篩選適合觀察清單的初篩。
執行需求
可連線遠端 streamable-HTTP 端點，或以 npx 執行本機 npm 套件（需 Node 18 以上）。透過環境變數 XSIGNAL_WALLET 提供 Base 錢包位址以取得每個錢包的免費呼叫額度；超出後需用已儲值的 Base 錢包透過 x402 支付 USDC，並帶上 X-PAYMENT 標頭。可選 X_BEARER_TOKEN 或 XAI_API_KEY 以取得即時社群資料，未提供時使用標示的示範資料。
安裝前請注意
超出免費額度後每次呼叫以 USDC 計費（各工具價格不同），代理可能因此產生實際支出。服務方聲明從不簽章或轉移資金、付款僅為驗證，但仍涉及已儲值的錢包與付款用戶端。訊號來自公開 X 貼文與 DEX 資料，聲明不構成投資建議，信心值是機械式啟發值而非校準機率，行動前應自行查證。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 Xsignal，將其新增到工作區。
  2. 為需要使用其工具的對話啟用該服務。

Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。

交給代理程式安裝

把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式，或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南，先向你展示發布者、端點和登入方式，經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。

閱讀 https://sourceweft.com/mcp/io.github.philpof102-svg%2Fxsignal/install.md，並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前，先告訴我它的發布者、端點和登入方式，等我確認。不要把 API 金鑰寫進命令或我會提交的檔案；問我金鑰應從哪裡取得。

檢視代理程式所依據的安裝指南

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。

{
  "mcpServers": {
    "xsignal": {
      "type": "http",
      "url": "https://xsignal-production.up.railway.app/mcp"
    }
  }
}

README

⚡ xsignal

Pay-per-call data ingredients for AI agents on Base, via x402 (USDC). The flagship is the one thing no other x402 signal does: get_intent abstains — it returns "no verdict" (and says so) when it isn't confident enough, instead of always answering and always charging. 3 free calls per wallet to try, then from $0.01. Verify-only: never signs or moves funds.

The tools (flagship first)

Tool / routePriceWhat you get
get_preflight · GET /preflight?addr=0x…$0.05The composed Base preflight: fuses on-chain safety (SAFE/WATCH/AVOID + rug flags, via MainStreet) with momentum into one verdict — GO / CAUTION / AVOID. Safety gates momentum, so it never green-lights a token that can rug.
get_intent · GET /intent?addr=0x…&min_confidence=0.7$0.01An outcome-priced momentum verdict (gaining/fading) only if confidence clears your bar, else a calibrated abstain. Paid answers carry a keyless tamper-evidence receipt.
get_token_brief · GET /brief?addr=0x…$0.05A meal: fuses market intel + cited social signal into a "what is happening with $TOKEN now" brief.
get_signal · GET /signal?q=<topic>$0.01A scored (virality + freshness) and cited real-time X/social signal.
get_token_intel · GET /token?addr=0x…$0.01Base token market data (liquidity/volume/price/age/flow + flags). Best as an input to the brief.
POST /mcp—MCP (streamable-http): tools/list discovers the 5 tools; a tools/call returns an x402 payment pointer.
GET /health · /.well-known/mcp.json · /.well-known/agent-card.json · /skill.mdfreehealth + agent discovery + the installable skill (no data).

Try it free (3 calls per wallet)

Add ?wallet=0xYourAddress to any route for 3 free full results, so you can evaluate quality before paying. After 3, that wallet pays via x402.

bash
curl "https://xsignal-production.up.railway.app/intent?addr=0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed&min_confidence=0.5&wallet=0xYourAddr"

Then run the example — a watchlist alerter that surfaces only the tokens confidently moving (and stays quiet on the rest):

bash
WALLET=0xYourAddr node examples/watchlist-alerter.js

Pay with x402 (beyond the free probe)

The first post-probe request returns HTTP 402 with an accepts array (price in USDC, network base, payTo). Pay with x402-fetch/x402-axios and a funded Base wallet, resubmit with the X-PAYMENT header, get the result. /intent is pay-first: you pay, then get a verdict or an honest abstain.

Safety

We never sign or move funds. x402 means we receive USDC to payTo; payment is verify-only via a facilitator. Signals are scored from public X posts + public DEX data — verify before acting; not financial advice. Confidence is a mechanical heuristic, not a calibrated probability or a prediction.

Config (env)

VarPurpose
XSIGNAL_PAYTOaddress that receives USDC (public; no key). Default = the operator address.
XSIGNAL_PRICE_USD / XSIGNAL_BRIEF_PRICE_USD / XSIGNAL_INTENT_PRICE_USDper-call prices (default 0.01 / 0.05 / 0.01)
XSIGNAL_PROBE_FREEfree probe calls per wallet (default 3)
X402_NETWORK / FACILITATOR_URLbase (mainnet CDP, needs CDP_API_KEY_ID/CDP_API_KEY_SECRET) or base-sepolia (keyless x402.org)
X_BEARER_TOKEN or XAI_API_KEYlive X/Grok source for get_signal (token intel + intent are keyless via DexScreener). No key → a labelled DEMO seed.

Run

bash
npm start      # :4520npm test       # full self-test suite (signal · tokenintel · brief · intent · x402 · sources · server)

Zero runtime deps for the core (plain Node >=18); @coinbase/x402 is used only for CDP-facilitator auth on mainnet.

來源：README.md，提交 677cde9

工具

6

get_intent

FLAGSHIP. An outcome-priced momentum verdict that ABSTAINS below your confidence bar - the only x402 signal that refuses to answer (honestly) when it is not sure. Post {addr, min_confidence 0-1} then pay $0.01, and get a mechanical momentum verdict "gaining" or "fading" IF the signal agreement clears your bar, else a calibrated "abstain". Paid answers carry a keyless tamper-evidence receipt. confidence is a transparent heuristic, NOT a prediction; not financial advice. x402-paid at GET/POST /intent (3 free calls per wallet via ?wallet=0x…). Example: GET /intent?addr=0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed&min_confidence=0.7

輸入參數addr必填questionmin_confidence

get_token_brief

A fused MEAL: one call combines Base token market intel + real-time social signal into a single "what is happening with $TOKEN right now" brief - market flags + top CITED social posts + a plain-language, non-advisory summary. Saves an agent the fetch-and-fuse work. x402-paid at GET/POST /brief ($0.05; 3 free per wallet via ?wallet=0x…). Example: GET /brief?addr=0x4ed4…&q=degen

輸入參數addr必填query

get_signal

Real-time X/social signal for a topic: scored (virality + freshness) and CITED (source urls), deduped and ranked. Input: query (topic) OR candidates[] (bring your own posts to score). x402-paid at GET/POST /signal ($0.01; 3 free per wallet via ?wallet=0x…). Example: GET /signal?q=base+memecoin

輸入參數limitquerytermssourcecandidates

get_token_intel

Base token MARKET data (liquidity, 24h volume, price + change, pool age, buy/sell flow, mechanical flags) from public DEX pools. Market data, NOT a trust/safety rating. Best used as an input to get_token_brief. x402-paid at GET/POST /token ($0.01; 3 free per wallet via ?wallet=0x…).

輸入參數addr必填

get_preflight

The Base PREFLIGHT: one call fuses MainStreet on-chain SAFETY (SAFE/WATCH/AVOID + rug flags) with xsignal MOMENTUM (the abstaining read) into a single recommendation (GO / CAUTION / AVOID / AVOID_ENTRY / NEUTRAL / UNVERIFIED) answering "is this token safe to touch AND moving?". Safety GATES momentum - never green-lights a token that can rug. x402-paid at GET/POST /preflight ($0.05; 3 free per wallet via ?wallet=0x…). Input: addr (0x Base token). Not financial advice.

輸入參數addr必填

get_screen

BATCH watchlist screen: run the preflight (safety ⊕ momentum) over up to 10 Base tokens in one call → which are GO (safe + moving), plus a per-token verdict + a summary count. For an agent screening a watchlist. x402-paid at GET/POST /screen ($0.10; 3 free per wallet via ?wallet=0x…). Input: addrs (array or comma-separated 0x addresses). Not financial advice.

輸入參數addrs必填

版本歷史

1
  1. v0.2.1最新Sep 16, 2026

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