Truth Bear

io.github.CHANGCHINFU由 GitHub 帳號 CHANGCHINFU 發布v1.0.0更新於 Nov 8, 2026

Verifiable official-source records for AI agents: record_hash + Ed25519 citation, x402 per-call

已驗證Streamable HTTP可網頁執行金融安全與監控資料與分析

概覽

AI 產生的概覽

遠端 MCP 伺服器,讓助理取得可驗證的官方來源紀錄(含雜湊與簽章引用),並提供免費的涵蓋範圍與引用查核。

可以做什麼
  • 在付費前查詢各訊號線的涵蓋範圍與資料新鮮度
  • 查核紀錄雜湊,並反向說明該雜湊所證明的內容
  • 對一條交織的官方指標線做跨序列交叉驗證
  • 取得付費紀錄端點的真實 x402 付款挑戰
  • 列出可用付款管道及其目前狀態
適用情境
當助理需要帶可核驗來源的官方公開紀錄(總體經濟、能源、天氣、健康、制裁、貿易、SEC 申報)時,或在採信其他代理轉交的引用雜湊之前需要先確認時使用。
執行需求
遠端 streamable HTTP 端點,不需帳號或 API 金鑰。免費工具無須付費即可使用。付費紀錄由呼叫方透過 x402 以 Base 上的 USDC 從自有錢包結算,或使用訂閱 Bearer 權杖。
安裝前請注意
付費紀錄按次從自有錢包以 USDC 扣款;伺服器本身不收款,結算在其之外完成。紀錄僅是對官方來源的忠實轉述,不構成建議或裁決,也不對來源本身的正確性作擔保。免費工具為唯讀查詢。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 Truth Bear,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.CHANGCHINFU%2Ftruthbear-mcp/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": {
    "truth-bear": {
      "type": "http",
      "url": "https://api.truthbear.co/mcp"
    }
  }
}

README

Truth Bear — verifiable official-source data for AI agents (MCP)

Neutral, third-party access to official public records — US federal agencies, named registries and standards bodies — where every paid record ships an offline-recomputable record_hash and an Ed25519-signed citation. Pay per call in USDC via x402. No account, no API key.

Truth Bear restates official records faithfully; it does not adjudicate, advise, or endorse. The authoritative source is the official publisher named in every citation — verify and dispute there.


Add it (remote MCP server)

json
{  "mcpServers": {    "truthbear": { "url": "https://api.truthbear.co/mcp" }  }}

JSON-RPC 2.0 over HTTP POST (initialize / tools/list / tools/call). No key needed to list or verify; paid tools return a real x402 payment challenge you settle from your own wallet.

Tools

ToolCostWhat it does
find_signalFREECoverage + freshness: which signals exist, queryable before you pay
verify_citationFREECheck a record_hash, get the official reverse-lookup
purchase_optionsFREEHow to pay for a listed endpoint
verify_triangularFREECross-verify one interwoven official line
get_official_recordx402Returns a real payment challenge; pay, then receive the signed official record

What you pay for

Not the raw public number (free at its source) — the aggregation + official-source provenance + offline cryptographic verifiability, pre-joined into one schema.

Verify offline, against the primary source

Every paid record carries a record_hash (canonical sha256, independently recomputable) and an Ed25519 citation. SEC-filing settlement evidence also ships a durable_anchor (an immutable SEC accession + permanent document URL) that re-verifies at any time, not only at read time.

Coverage (90 industries)

Macro (FRED / US Treasury / BLS), energy (EIA), weather & disaster (NOAA / USGS / NWS / SPC / FEMA), health (openFDA / CDC), sanctions (OFAC / EU), trade (USITC), SEC EDGAR filings, and more.

Try it

bash
# free: what existscurl https://api.truthbear.co/manifest
# free: MCP tool listcurl "https://api.truthbear.co/manifest?platform=mcp"
# settlement evidence feed (x402, $0.01): did an issuer file a form before a cutoff?curl "https://api.truthbear.co/resolve/proposer?entity=AAPL&form=10-K&cutoff=2025-11-15"

Terms

Third-party relay of official records plus cross-source analysis. We warrant faithful relay (the hash recomputes against the cited official source), not the correctness of the source itself. Reference only — not advice, not adjudication, not a market resolution; the independent judgement and decision are the user's own. Full provider notice: https://api.truthbear.co/terms

Links

License

MIT (this listing/readme). The API itself is a hosted service governed by the Terms above.

來源:README.md,提交 31337e9

工具

5

verify_citation

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.

輸入參數record_hash必填

find_signal

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.

輸入參數fullentityindustrysignal_id

get_official_record

Get 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.

輸入參數dimpathentitysignal_id

purchase_options

How 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.

輸入參數path

verify_triangular

Cross-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.

輸入參數line必填entity必填

版本歷史

1
  1. v1.0.0最新Nov 8, 2026

評分

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