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Nobulex — Agent Receipt Layer

by arian-gogani · v0.0.1

Cryptographic receipts for every Dify agent tool call. Ed25519-signed, JCS-canonical, hash-chained audit trail ready for EU AI Act Article 12 compliance and independent verification.

14 installsUpdated Jul 14, 2026
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Capabilities

Tools

Available inside your emploidai workspace after installation.

Data sources

Available inside your emploidai workspace after installation.

Category

tool

Version

0.0.1arian-gogani

Requirements

Maximum memory 1MB

Pricing

Not disclosed by publisher

Security & access

Review before installing

CompatibleRequires emploidai 1.0.0+

Permissions

No permissions were declared by the publisher.

Dependencies

No additional dependencies

Resources

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Nobulex - Agent Receipt Layer for Dify

Cryptographic receipts for every Dify agent tool call.

What it does

Every time your Dify workflow node calls a tool, Nobulex generates an Ed25519-signed, JCS-canonical receipt that is hash-chained to the previous one. The chain is tamper-evident: change any byte and verification fails at exactly that point. An auditor can verify the complete history offline, with no dependency on your infrastructure, using only your agent's public key.

Tools

ToolWhat it does
sign_receiptSign a cryptographic receipt for one tool call
verify_receiptVerify a receipt's signature and chain integrity
export_article12Export a regulator-facing EU AI Act Article 12 evidence package
get_trust_scoreGet this agent's current Trust Capital score (0-100)

Quick start

  1. Install the plugin in your Dify workspace.
  2. Set the Agent ID credential (optional - defaults to dify-agent).
  3. Add sign_receipt as a node in your workflow after each tool call you want audited.
  4. Pass action_type (what the agent did) and scope (what it touched).
  5. At end of session, call export_article12 to get the full evidence package for compliance logging.

Example: EU AI Act Article 12 compliance workflow

Tool Call Node (search_web)
  → sign_receipt(action_type="search_web", scope=query)
  → [next step in workflow]

Tool Call Node (send_email)
  → sign_receipt(action_type="send_email", scope=recipient)

End of session:
  → export_article12()  → store to immutable storage

The exported package contains signed receipts, chain head hash, and an EU AI Act Article 12 obligation mapping. Any auditor can verify the complete chain independently.

Why this is different from standard audit logs

Standard logsNobulex
Tamper-evident❌ (mutable)✅ (signature fails)
Independent verification❌ (trust operator)✅ (public key only)
Chain integrity❌✅ (hash chain)
EU AI Act Article 12partial✅

Links

  • SDK: pip install nobulex
  • GitHub: github.com/arian-gogani/nobulex
  • OWASP reference: PR #2210 - AML and Sanctions Compliance for AI Agent Payments
  • Live demo: nobulex.com/arena

Trust Capital

get_trust_score returns a Trust Capital score (0-100) based on verified receipt history. This is the portable, accumulating agent reputation that works across platforms - the aspect Dify's team found most interesting and that doesn't overlap with existing Marketplace tools.

Higher scores unlock more agent autonomy in Trust Capital-aware workflows.