What is the key difference between Honesty MCP and Mastercard Developers MCP?

Honesty MCP belongs to the Developer Tools category with local stdio execution, while Mastercard Developers MCP belongs to the Developer Tools category with local stdio execution.

How do I install Honesty MCP or Mastercard Developers MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Honesty MCP and Mastercard Developers MCP free or paid?

Honesty MCP operates under a Free / Open Source model (No auth required). Mastercard Developers MCP operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Honesty MCP lists 14 tools with 0 views and 0 GitHub stars. Mastercard Developers MCP lists 9 tools with 2 views and 56 GitHub stars.

Can I use both Honesty MCP and Mastercard Developers MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Honesty MCP vs Mastercard Developers MCP

In-depth architectural comparison of the Honesty MCP and Mastercard Developers MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Honesty MCP

Developer Tools · Local stdio

Quality: 57/100 (Good) | Auth: No auth required

Mastercard Developers MCP

Developer Tools · Local stdio

Quality: 67/100 (Great) | Auth: No auth required

Verdict Summary: Choose Honesty MCP if you need specialized Developer Tools tools running via a local process. Choose Mastercard Developers MCP if your workspace requires Developer Tools integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Honesty MCP when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: check_grounding, corroborate_evidence, check_payout_invariance.

Explore Honesty MCP Details

Choose Mastercard Developers MCP when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: get-services-list, get-documentation, get-documentation-section-content.

Explore Mastercard Developers MCP Details

Feature & Specification Comparison

Specification	H Honesty MCP Developer Tools	Mastercard Developers MCP Developer Tools
Summary	MCP server exposing 11 honesty-SDK kits (grounding, trust, audit, corroboration) as agent tools.	Access Mastercard Developers APIs, documentation, and API specifications through MCP.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Honesty MCP Tools (14)

check_grounding

Checks citation structure in AI-generated text, sentence by sentence: uncited claims, honest placeholders, and citations whose marker is missing or whose evidence doesn't match lexically. Structural only; it does not verify that the evidence is true. The word-overlap matcher rejects some faithful p…

corroborate_evidence

Reports the evidence direction (supports / contradicts / mixed / none) and a graded verdict from distinct sources, not a vote count. With corroboration-kit 0.3 and later, sources count by independent origin (pages of one site count once unless you declare an `origin`). Independence is not verified,…

check_payout_invariance

Checks, for the scenarios you supply, whether a ranking engine's output changes with who pays more (`runtime` mode, off unless `HONESTY_MCP_ENABLE_CODE_EXEC=1`) or whether payout identifiers appear in source text you send (`static-imports` mode, always available; it never reads files from disk). St…

check_mutation_invariance

Off unless `HONESTY_MCP_ENABLE_CODE_EXEC=1` (it is not listed otherwise). Checks, for the scenarios you supply, whether a decision/score/ranking function's output depends on a variable it claims not to (protected attribute, geography, price, or anything you name). Not a formal proof for every possi…

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Honesty MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "honesty-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "honesty-mcp"
      ]
    }
  }
}

Mastercard Developers MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "mastercard-developers-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mastercard/developers-mcp"
      ]
    }
  }
}

Frequently Asked Questions

Honesty MCP is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Mastercard Developers MCP belongs to Developer Tools using local stdio subprocess. Select Honesty MCP when you need capabilities focused on developer tools and Mastercard Developers MCP when you require tools for developer tools.

More alternatives to Honesty MCP More alternatives to Mastercard Developers MCP Developer Tools category hub