Agent Output Guard MCP server

Read from the package source without running it. The installed server may list more.

• cross_reference_check

  Compare data from multiple agents for consistency and detect discrepancies. Essential for multi-agent coordination. Returns consistency score and detailed comparison.

• detect_hallucination_markers

  Scan agent output for common hallucination patterns, uncertainty markers, and fabrication indicators. Critical for multi-agent reliability. Returns detailed analysis and confidence score.

• output_consistency_score

  Calculate overall consistency score for agent output including internal logic, format consistency, and reliability indicators. Returns comprehensive reliability assessment.

• validate_data_freshness

  Check if data from another agent is recent and valid based on timestamps, staleness indicators, and expected update frequencies. Prevents acting on outdated information.

• verify_json_schema

  Validate JSON data from another agent against expected schema. Essential for preventing malformed data propagation in multi-agent workflows. Returns validation status, errors, and confidence score.

• Code scan3 source files scanned25/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitylocal package, no credentials required12/15
• Maintenancelast push 176 days ago8/15
• Maintainer identitynamespace and repository owner differ4/10

Safety score

75/100

higher than 45% of 4,460 AI and agents servers

Tools

5

the typical AI and agents server has 6

Tools that change things

0%

typical: 0%. Fewer write tools means less an agent can break

Agent Output Guard: common questions

Is Agent Output Guard MCP server safe?

Mostly: it is graded B (75/100). Read the Agent Output Guard safety report

How do I install Agent Output Guard?

It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.

Does Agent Output Guard need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is Agent Output Guard maintained?

The last commit was 213 days ago (2026-04-05). The latest release is v1.0.8.

What can I use instead of Agent Output Guard?

Servers from other publishers that do the same job: llmtrim MCP server, HOL Guard MCP server and Decionis MCP server.

How does Agent Output Guard compare with other AI and agents MCP servers?

safety score 75/100 (higher than 45% of 4,460 AI and agents servers); tools 5 (the typical AI and agents server has 6); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.