Fact Check Agent

Name: Fact Check Agent
Author: AgentNode

★Trusted◇Sandbox optional

MIT★Gold Verified100Agent

by AgentNode · published 2 months ago · agent

Verify claims against multiple web sources and produce a fact-check verdict with supporting evidence.

Verify a given claim by searching multiple sources, extracting relevant evidence, cross-referencing facts, and producing a verdict with confidence level. This agent uses AgentNode's full skill registry to dynamically discover and install the capabilities it needs at runtime.

agent fact-check verification research

generic

Quick Start

bash

agentnode install fact-check-agent

Runs in a subprocess with filtered environment by default. Declared permissions are policy-checked, not sandboxed.

Usage

Generated template

python

from fact_check_agent.agent import run

result = run()
print(result)

Runs locally on your machine. No execution data is sent to AgentNode. Permissions are checked before execution. Learn how this works

AAgent Configuration

Tier

LLM + Tools

Goal

Verify a claim by searching for supporting and contradicting evidence, then producing a verdict.

Agent Behavior

description only

You are a fact-checking analyst.
Verify claims by searching multiple web sources, cross-referencing
evidence, assessing source credibility, and producing a verdict
(confirmed/unconfirmed/false) with supporting evidence.

Tool Access

web-search-packwebpage-extractor-pack

Limits

Max Iterations

Max Tool Calls

Max Runtime

300s

Isolation

thread

Verification

high confidence100/100★ Gold Verified

smokeAgent executed successfully

+20/20

importAgent entrypoint imported successfully

+15/15

installInstalled in 1.8s

+15/15

contractAll contract checks passed

+15/15

manifestAgent manifest completeness

+10/10

determinismConsistent output across runs (normalized)

+10/10

reliability3/3 runs passed

+15/15

Agent installs and imports correctly. runtime checks passed. 2/2 verification cases passed. manifest completeness 10/10.

✔install1.8s

✔import116ms

✔smoke154ms

This package was executed and validated by AgentNode before listing. Install, import, and runtime checks passed.

Verified in real_auto mode

Python 3.12.3ffmpegpopplertesseractuv

Last verified 5d ago· Runner v2.0.0

Version History

Capabilities

fact_checkfact_checktool

Verify claims against multiple web sources and produce a fact-check verdict with evidence.

Input Schema

{
  "type": "object",
  "required": [
    "goal"
  ],
  "properties": {
    "goal": {
      "type": "string",
      "description": "The objective for the agent"
    }
  }
}

Output Schema

{
  "type": "object",
  "properties": {
    "done": {
      "type": "boolean"
    },
    "result": {
      "type": "object"
    }
  }
}

Permissions

◇Sandbox optionalFrom a trusted publisher — runs on the host by default. You can require isolation with sandbox.host_trust_policy.

Declared by the publisher. Checked before execution by the policy gate.

Networkunrestricted

Filesystemnone

Code Executionnone

Data Accessinput_only

User Approvalnever

Permissions are policy-checked before execution. For trusted and curated packages that run on the host, network and filesystem access are policy-checked but not OS-sandboxed. When runtime isolation is required for untrusted/community code, AgentNode uses sandbox-or-fail-closed if the required container runtime and pinned image are available. Learn more

Privacy

All tool execution happens locally on your machine. AgentNode never receives:

• Tool inputs or outputs
• Execution logs
• Data your agent processes

Only install events and search queries are sent to the registry.

bash

agentnode install fact-check-agent

Files (4)

License

MIT

Stats

Downloads0

Installs0

Versionv2.1.2

Published4/28/2026

Channelstable

Typeagent

Entrypointfact_check_agent.agent

Compatibility

Frameworks

generic

Runtime

python

Python Version

>=3.10

Trust & Security

Publisher★Trusted

SignatureNone

ProvenanceNone

Security Issues0

Publisher

AgentNode

@agentnode

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