io.github.CHANGCHINFU由 GitHub 帳號 CHANGCHINFU 發布v1.0.5更新於 Oct 24, 2026
Verify official facts with Bitcoin-anchored proof. 180+ signals, x402 pay-per-call.
遠端 MCP 伺服器，讓助理查詢官方公共資料訊號、驗證比特幣錨定的紀錄雜湊，並透過 x402 以 USDC 按次付費。
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。
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.CHANGCHINFU%2Fmcp-gauge/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。把它新增到你客戶端的 mcpServers 設定中。
{
"mcpServers": {
"gauge": {
"type": "http",
"url": "https://api.truthbear.co/mcp"
}
}
}[MCP server score] [License: MIT] [Model Context Protocol]
Check official facts before your AI agent acts. 180+ signals from USGS, NOAA, SEC EDGAR, EPA, and more — each response includes multi-source cross-validation and a tamper-proof receipt anchored to Bitcoin via OpenTimestamps (proving the record set existed no later than the stamp time, not that it was collected on the data day). No API key, no signup. Pay per call in USDC on Base via x402.
Add to your config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS, %APPDATA%\Claude\claude_desktop_config.json on Windows):
Add to .cursor/mcp.json in your project root (or global config):
Any MCP client that supports stdio transport works. Command: npx -y mcp-gauge-x402, set EVM_PRIVATE_KEY in env for paid tools.
Alternative: install from GitHub (no npm account needed):
How it works: When your agent calls a paid tool, the GAUGE server returns an x402 payment challenge. The MCP client automatically pays in USDC on Base (EIP-3009 gasless — no ETH needed) and retries the request. The receipt is included in every response.
Wallet safety:
x402-fetch)Prices are set by the live x402 challenge (use gauge_preview to check current pricing). If you drive the API with your own x402 client, set maxValue to at least $0.25 — the default $0.10 makes your client reject bundle tools locally.
Every paid record carries a record_hash (canonical SHA-256). Daily Merkle roots are stamped to Bitcoin via OpenTimestamps. The stamp proves the record set existed no later than stamped_at. Re-check anytime:
gauge_anchor tool (free)POST /verify or /proof/:record_hash at the GAUGE APIots CLIDo I need ETH for gas? No. x402 uses EIP-3009 (gasless USDC transfer). You only need USDC on Base.
What if I don't set a private key? You can still use all 5 free tools. Paid tools will be listed but return an error when called.
Is my private key sent to the server?
No. The key stays on your machine. x402-fetch signs the payment locally and sends only the signed authorization to the GAUGE server.
What happens if the data isn't available? The tool honest-fails with no charge. You only pay when you get a result.
Can I verify the receipt without your server?
Yes. Download the OpenTimestamps attestation via gauge_anchor and verify with the standard ots CLI tool against any Bitcoin node — it proves the record set existed no later than the stamp time, not that it was collected on the data day.
https://api.truthbear.co/.well-known/x402, /llms.txtMIT · AEML-DS Vanished-Data Exchange
來源：README.md，提交 b0b840f
Verify a Truth Bear record (free)
FREE. Given a record_hash from any Truth Bear record, look it up and recompute the canonical hash server-side, returning whether it is a genuine Truth Bear official record plus a plain-language reverse lookup of what exactly that hash attests. Use this to check a citation you were handed by another agent or document BEFORE relying on it. No payment, no API key.
record_hash必填Find which signals/entities are covered (free)
FREE coverage + freshness manifest: which signal_id lines exist, how many entities each covers, and fresh/recent/stale counts - so you can check "is my entity covered and how fresh" BEFORE paying. Optional filters: industry, signal_id, entity.
fullentityindustrysignal_idGet the x402 payment challenge for a paid record
Returns the REAL x402 payment challenge (accepts[]: network / asset / payTo / amount) for the paid endpoint that serves a given signal_id+entity, or any listed endpoint addressed directly by `path`. This tool does NOT deliver paid data and does NOT take payment - MCP has no payment layer. Pay at the returned url with your own x402 client (USDC on Base or Solana, gasless EIP-3009; pay from a plain EOA) and you receive the record directly, with record_hash you can verify offline. This tool only fetches the 402 challenge; it delivers no paid data and collects no payment.
dimpathentitysignal_idHow can I actually buy this? (free)
FREE. Ask how to pay for a listed endpoint and get every channel with its REAL status - including the ones that are wired but not open yet. Three channels exist: x402 micropayment (for an agent with a funded USDC wallet on Base), a stateless subscription Bearer token (for a person or team - no wallet, no private key, no account), and a card rail. This tool takes no payment and holds no key; it only tells you which doors exist and which are open today.
pathCross-check a line of official series & recompute the verdict (free)
FREE. Cross-verify one GAUGE interweave line: it returns each official series ("leg") in the line with its own record_hash, current/previous values, expected direction and per-leg minMove deadband, plus a count-style state (directions_matched / direction_mismatch / inverse_consistent / not_comparable / insufficient) and N-of-M. Everything needed to recompute the verdict OFFLINE is in the response - verify each leg hash with verify_citation, then recompute dir=sign(current-previous) with the minMove deadband. Descriptive only: no forecast, no causation, no advice. No payment, no API key.
line必填entity必填已滿足適用檢查項的 100%
該評分衡量此收錄條目的完整程度，依據註冊中心條目、端點與公開來源計算得出。它不是對伺服器本身的評價，也不表示伺服器安全或目前可用：可連通性是帶日期的檢查結果，評分也不包含安裝量或使用者評價。
{ "mcpServers": { "gauge": { "command": "npx", "args": ["-y", "mcp-gauge-x402"], "env": { "EVM_PRIVATE_KEY": "0x..." // optional — omit for free tools only } } }}{ "mcpServers": { "gauge": { "command": "npx", "args": ["-y", "mcp-gauge-x402"], "env": { "EVM_PRIVATE_KEY": "0x..." // optional — omit for free tools only } } }}claude mcp add gauge -- npx -y mcp-gauge-x402# For paid tools, add the env:claude mcp add gauge --env EVM_PRIVATE_KEY=0x... -- npx -y mcp-gauge-x402npx -y github:CHANGCHINFU/mcp-gaugegit clone https://github.com/CHANGCHINFU/mcp-gauge && cd mcp-gaugenpm install && npm run buildnode dist/index.js