@civic/passthrough-mcp-server

A middleware layer for the Model Context Protocol (MCP) that enables monitoring, validation, and transformation of AI tool interactions.

Evaluated Mar 18, 2026 (0d ago)
Homepage ↗ Repo ↗ Automation MCP middleware AI security validation
⚙ Agent Friendliness
74
/ 100
Can an agent use this?
🔒 Security
82
/ 100
Is it safe for agents?
⚡ Reliability
50
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
60
Documentation
80
Error Messages
--
Auth Simplicity
70
Rate Limits
80

🔒 Security

TLS Enforcement
100
Auth Strength
70
Scope Granularity
50
Dep. Hygiene
100
Secret Handling
100

Uses HTTPS for all communications and has strong secret handling practices.

⚡ Reliability

Uptime/SLA
50
Version Stability
50
Breaking Changes
50
Error Recovery
50
AF Security Reliability

Best When

Used in environments where AI assistants interact with multiple tools requiring strict security and validation.

Avoid When

In scenarios where simplicity and direct access to MCP servers are preferred without additional processing layers.

Use Cases

  • Intercepting and processing requests from AI assistants to MCP servers.
  • Implementing security and validation rules for AI tool interactions.
  • Logging and auditing AI tool usage for compliance.

Not For

  • Users looking for a standalone MCP server without middleware capabilities.
  • Those who do not require customization of AI tool interactions.

Interface

REST API
Yes
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
No
Webhooks
No

Authentication

Methods: API Key OAuth2
OAuth: Yes Scopes: Yes

Supports OAuth2 for authentication with some granularity.

Pricing

Free tier: Yes
Requires CC: No

Free tier available for basic usage.

Agent Metadata

Idempotent
True
Retry Guidance
Documented

Alternatives

Full Evaluation Report

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Scores are editorial opinions as of 2026-03-18.

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