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langchain - 💡(How to fix) Fix Integration: AgentFolio trust scores as a tool for LangChain agents [3 comments, 3 participants]

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langchain-ai/langchain#36141•Fetched 2026-04-08 01:07:57
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Proposal to add an AgentFolio trust score tool that lets LangChain agents verify the identity and reputation of other agents/services before interacting with them.

Root Cause

Proposal to add an AgentFolio trust score tool that lets LangChain agents verify the identity and reputation of other agents/services before interacting with them.

Code Example

from langchain_community.tools import AgentFolioTrustTool

trust_tool = AgentFolioTrustTool()

# Agent can now check trust scores in its reasoning chain
agent = create_react_agent(llm, [trust_tool, ...])
# "Before delegating this task to agent_xyz, let me check their trust score..."
RAW_BUFFERClick to expand / collapse

Summary

Proposal to add an AgentFolio trust score tool that lets LangChain agents verify the identity and reputation of other agents/services before interacting with them.

Motivation

As LangChain agents increasingly operate in multi-agent systems and interact with external services, there's a need for verifiable identity. An agent scheduling a task to another agent should be able to check: "Is this agent trustworthy? What's their track record?"

AgentFolio provides this via on-chain verified identity (Solana SATP protocol) and computed trust scores.

Proposed tool

from langchain_community.tools import AgentFolioTrustTool

trust_tool = AgentFolioTrustTool()

# Agent can now check trust scores in its reasoning chain
agent = create_react_agent(llm, [trust_tool, ...])
# "Before delegating this task to agent_xyz, let me check their trust score..."

What the tool provides

  • check_trust(agent_id) — returns trust score, verification level, verified credentials
  • search_agents(skills) — find verified agents with specific capabilities
  • verify_identity(agent_id) — confirm an agent's on-chain identity

API details

  • Endpoint: GET https://agentfolio.bot/api/profile/:id/trust-score
  • Payment: x402 protocol ($0.01 USDC per query, Solana)
  • 156 agents currently profiled with trust scores

Links

  • AgentFolio: https://agentfolio.bot
  • API docs: REST endpoints for profiles, search, trust scores
  • SATP: Solana Agent Trust Protocol for on-chain identity

Happy to contribute a PR for the community tools package.

extent analysis

Fix and Implementation

To integrate the AgentFolio trust score tool into LangChain, we need to create a new tool class that interacts with the AgentFolio API.

Fix Plan

  • Create a new Python class AgentFolioTrustTool that encapsulates the API interactions.
  • Implement the check_trust, search_agents, and verify_identity methods.
  • Add the new tool to the LangChain community tools package.

Example Code

import requests

class AgentFolioTrustTool:
    def __init__(self, api_endpoint="https://agentfolio.bot/api"):
        self.api_endpoint = api_endpoint

    def check_trust(self, agent_id):
        response = requests.get(f"{self.api_endpoint}/profile/{agent_id}/trust-score")
        return response.json()

    def search_agents(self, skills):
        response = requests.get(f"{self.api_endpoint}/search", params={"skills": skills})
        return response.json()

    def verify_identity(self, agent_id):
        response = requests.get(f"{self.api_endpoint}/profile/{agent_id}/verify")
        return response.json()

Verification

To verify that the fix worked, you can create an instance of the AgentFolioTrustTool class and call its methods with test data. For example:

trust_tool = AgentFolioTrustTool()
print(trust_tool.check_trust("agent_xyz"))
print(trust_tool.search_agents(["skill1", "skill2"]))
print(trust_tool.verify_identity("agent_xyz"))

Make sure to replace "agent_xyz" with a real agent ID and ["skill1", "skill2"] with actual skills.

Extra Tips

  • Make sure to handle API errors and exceptions properly.
  • Consider adding caching or rate limiting to avoid excessive API requests.
  • Review the AgentFolio API documentation for any specific requirements or guidelines.

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