Koskamo

MCP Surface Lint MCP

A static analysis tool that audits MCP tool surfaces for token cost, schema quality, and design issues. It accepts a public HTTPS endpoint or a tools/list snapshot and returns structured scores and findings without invoking target tools or making LLM calls.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

MCP Surface Lint MCP logo, by DLeibnerCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by DLeibner
MCP endpoint (Streamable HTTP)
https://mcplint-web.vercel.app/api/mcp
Vendor documentation

What its tools do

1 tool, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (1)

1 of 1 have a description · 1 of 1 declare behavior hints · 1 of 1 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Check an installed Grafana MCP server using the check_mcp_server tool.
  • Review a remote server by providing its public HTTPS endpoint.
  • Check a tools/list JSON snapshot to explain low design scores.
  • Audit a revised tool surface to compare category scores and flag overlapping tools.

Source and maintenance

Community listingRegistry 0.4.0
mcp-registry: io.github.DLeibner/mcp-surface-lint@0.4.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
mcp-surface-lint 0.4.0
MCP protocol negotiated in check
2025-11-25
Tools
1 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Tools

1 advertised

check_mcp_server — Check MCP server
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Statically audit an MCP tool surface from a public HTTPS URL or tools/list snapshot. Returns deterministic scores and findings without invoking any target tool or making LLM calls. When the user asks to check another installed MCP server, read that server's complete tool definitions from client context and pass them as snapshot (MCP `name` or Cursor-style `tool` both work; do not use file paths or $ref). If those definitions are unavailable, ask the user for its public endpoint or tools/list JSON instead of inventing an audit.

check_mcp_server input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "Public HTTPS Streamable HTTP MCP endpoint to inspect."
    },
    "headers": {
      "type": "object",
      "description": "Optional HTTP headers sent only while reading the remote tools/list response.",
      "additionalProperties": {
        "type": "string"
      }
    },
    "snapshot": {
      "description": "A tools/list JSON response, MCP Surface Lint snapshot, or client tool dump containing a tools array. Each tool needs `name`, or the Cursor-style `tool` alias. Forward another installed server's complete tool definitions here — do not invent schemas."
    }
  },
  "additionalProperties": false
}
check_mcp_server output schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "staticAnalysis",
    "targetToolsInvoked",
    "grade",
    "server",
    "source",
    "stats",
    "scores",
    "findingCounts",
    "findings"
  ],
  "properties": {
    "grade": {
      "enum": [
        "A",
        "B",
        "C",
        "D",
        "F"
      ],
      "type": "string"
    },
    "stats": {
      "type": "object",
      "required": [
        "toolCount",
        "approxTokens",
        "encoding"
      ],
      "properties": {
        "encoding": {
          "type": "string"
        },
        "toolCount": {
          "type": "integer",
          "minimum": 0
        },
        "approxTokens": {
          "type": "integer",
          "minimum": 0
        }
      },
      "additionalProperties": false
    },
    "scores": {
      "type": "object",
      "required": [
        "composite",
        "categories"
      ],
      "properties": {
        "composite": {
          "type": "integer",
          "maximum": 100,
          "minimum": 0
        },
        "categories": {
          "type": "object",
          "required": [
            "surface",
            "naming",
            "descriptions",
            "schemas",
            "annotations",
            "design"
          ],
          "properties": {
            "design": {
              "type": "integer",
              "maximum": 100,
              "minimum": 0
            },
            "naming": {
              "type": "integer",
              "maximum": 100,
              "minimum": 0
            },
            "schemas": {
              "type": "integer",
              "maximum": 100,
              "minimum": 0
            },
            "surface": {
              "type": "integer",
              "maximum": 100,
              "minimum": 0
            },
            "annotations": {
              "type": "integer",
              "maximum": 100,
              "minimum": 0
            },
            "descriptions": {
              "type": "integer",
              "maximum": 100,
              "minimum": 0
            }
          },
          "additionalProperties": false
        }
      },
      "additionalProperties": false
    },
    "server": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "version": {
          "type": "string"
        }
      },
      "additionalProperties": false
    },
    "source": {
      "type": "string"
    },
    "findings": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "ruleId",
          "message",
          "severity",
          "category",
          "docsUrl"
        ],
        "properties": {
          "path": {
            "type": "string"
          },
          "ruleId": {
            "type": "string"
          },
          "docsUrl": {
            "type": "string"
          },
          "message": {
            "type": "string"
          },
          "category": {
            "enum": [
              "surface",
              "naming",
              "descriptions",
              "schemas",
              "annotations",
              "design"
            ],
            "type": "string"
          },
          "evidence": {
            "type": "string"
          },
          "severity": {
            "enum": [
              "error",
              "warn",
              "info"
            ],
            "type": "string"
          },
          "toolName": {
            "type": "string"
          }
        },
        "additionalProperties": false
      }
    },
    "findingCounts": {
      "type": "object",
      "required": [
        "bySeverity",
        "byCategory"
      ],
      "properties": {
        "byCategory": {
          "type": "object",
          "required": [
            "surface",
            "naming",
            "descriptions",
            "schemas",
            "annotations",
            "design"
          ],
          "properties": {
            "design": {
              "type": "integer",
              "minimum": 0
            },
            "naming": {
              "type": "integer",
              "minimum": 0
            },
            "schemas": {
              "type": "integer",
              "minimum": 0
            },
            "surface": {
              "type": "integer",
              "minimum": 0
            },
            "annotations": {
              "type": "integer",
              "minimum": 0
            },
            "descriptions": {
              "type": "integer",
              "minimum": 0
            }
          },
          "additionalProperties": false
        },
        "bySeverity": {
          "type": "object",
          "required": [
            "error",
            "warn",
            "info"
          ],
          "properties": {
            "info": {
              "type": "integer",
              "minimum": 0
            },
            "warn": {
              "type": "integer",
              "minimum": 0
            },
            "error": {
              "type": "integer",
              "minimum": 0
            }
          },
          "additionalProperties": false
        }
      },
      "additionalProperties": false
    },
    "staticAnalysis": {
      "type": "boolean",
      "const": true
    },
    "targetToolsInvoked": {
      "type": "boolean",
      "const": false
    }
  },
  "additionalProperties": false
}
check_mcp_server annotations
{
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
424 ms
95th percentile latency
424 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 424 ms · metadata changed · 1 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http mcp-surface-lint-mcp https://mcplint-web.vercel.app/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add mcp-surface-lint-mcp --url https://mcplint-web.vercel.app/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable mcp-surface-lint-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "mcp-surface-lint-mcp": {
      "url": "https://mcplint-web.vercel.app/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "mcp-surface-lint-mcp": {
      "type": "streamableHttp",
      "url": "https://mcplint-web.vercel.app/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start mcp-surface-lint-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "mcp-surface-lint-mcp": {
      "type": "http",
      "url": "https://mcplint-web.vercel.app/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http mcp-surface-lint-mcp https://mcplint-web.vercel.app/api/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://mcplint-web.vercel.app/api/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "mcp-surface-lint-mcp": {
      "serverUrl": "https://mcplint-web.vercel.app/api/mcp"
    }
  }
}

Let your agent find its tools

Find servers like MCP Surface Lint MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

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