Truth Bear for Dify

Truth Bear returns official-source records for AI agents: every record carries the official source URL, a record_hash you can recompute offline, a freshness stamp, and a did:key signature.

Tools

• verify_citation — 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 offi
• find_signal — 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 c
• get_official_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
• purchase_options — 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

Setup

1. In Dify, go to Plugins → Explore Marketplace, search for Truth Bear, and install it.
   (Or install the directly via Plugins → Install plugin → Local Package File.)
2. No credential setup is required. There is no API key, no account, and no wallet to connect —
   see Credentials below.
3. Add the plugin's tools to an Agent or a Workflow node and call them.

Usage

• Check coverage first. Call — no arguments needed — to see which
  lines exist, how many entities each covers, and how fresh they are. This is free.
• Verify a citation someone handed you. Pass a to .
  It returns whether that hash is a genuine Truth Bear record and, in plain language,
  exactly what the hash attests. This is free and needs nothing but the hash.
• Get the price and payment details for a paid record. Pass a and an
  to . It returns the live x402 payment challenge — the network, asset,
  destination address, amount, and the URL to pay at.
  ⚠️ This tool does not deliver paid data and does not take payment. It hands the challenge
  back to you as data; paying is done by your own x402 client, outside Dify.

Connection requirements

Outbound HTTPS to only. The base URL is compiled into the plugin and is
not user-configurable, so the plugin cannot be pointed at an arbitrary host.

Credentials

None. The free tools work with no API key and no wallet.

External paid service

Truth Bear is an external paid service. The free tools (verify_citation, find_signal) need no wallet and no API key. The paid tool returns an x402 payment challenge; this artifact surfaces that challenge as data and never holds, requests, or transacts a private key.

Current prices are always read live from the service — this plugin never stores a price.
See https://api.truthbear.co/manifest.

Source

https://github.com/CHANGCHINFU/mcp-gauge