MERCATOR Verify MCP

MERCATOR Verify provides evidence-backed verification and decision support for autonomous agents. It offers specialized tools for entity evidence, including company enrichment and verification from a domain or name, returning current company information with field-level sources, freshness, and explicit conflicts. It also provides address evidence to confirm contract addresses before agents approve or send transactions.

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.

Community listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by Arzuo

You need:x402 v2 on Base mainnet (eip155:8453), native USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, paid to 0xEFc22716066C1092b12d12ca9377f00bA2ffA7A8.

MCP endpoint (Streamable HTTP)

https://mercator-entity-evidence.fly.dev/mcp

Vendor documentation

What its tools do

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

2 of 2 have a description · 0 of 2 declare behavior hints · 0 of 2 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 6, 2026, 11:53 PM UTC
Availability 1 of 1 checks passed in 30 days

What you can do with it

Verify company facts and enrichment from a domain or name with source URLs.
Confirm contract addresses before agents approve or send transactions.
Check for explicit conflicts in company data fields.
Validate entity evidence requests via a free preflight endpoint.

Source and maintenance

Community listingRegistry 1.0.0

mcp-registry: io.github.Arzuo/mercator-company-verification@1.0.0 Source repository Project website

Maintenance checked: Nov 6, 2026, 11:48 PM UTC

Protocol and capabilities

Server: mercator-entity-evidence 1.29.1
MCP protocol negotiated in check: 2025-11-25
Tools: 2 advertised
Resources: 0 advertised
Resource templates: 0 advertised
Prompts: 0 advertised

Server-advertised capabilities

{
  "tools": {
    "listChanged": false
  },
  "prompts": {
    "listChanged": false
  },
  "resources": {
    "subscribe": false,
    "listChanged": false
  },
  "experimental": {}
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

MERCATOR Verify provides evidence-backed verification and decision support for autonomous agents. Use its specialized tools when an agent needs trustworthy evidence before taking a downstream action.

Tools

2 advertised

entity_evidence

Advertised by the server during the last successful anonymous check.

Evidence-backed company facts and current company information for company enrichment and company verification, with field-level sources, freshness and explicit conflicts. Unevidenced fields return UNKNOWN rather than a guess. $0.10 per billable call via x402; a response adding nothing beyond the identifier you supplied is free.

entity_evidence input schema

{
  "type": "object",
  "title": "entity_evidenceArguments",
  "required": [
    "fields"
  ],
  "properties": {
    "name": {
      "type": "string",
      "title": "Name",
      "default": ""
    },
    "domain": {
      "type": "string",
      "title": "Domain",
      "default": ""
    },
    "fields": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "title": "Fields"
    },
    "max_age_days": {
      "type": "integer",
      "title": "Max Age Days",
      "default": 30
    }
  }
}

entity_evidence_validate

Advertised by the server during the last successful anonymous check.

FREE preflight for entity_evidence: check a request and see the price and guarantees before paying. Retrieves nothing and costs nothing.

entity_evidence_validate input schema

{
  "type": "object",
  "title": "entity_evidence_validateArguments",
  "required": [
    "fields"
  ],
  "properties": {
    "name": {
      "type": "string",
      "title": "Name",
      "default": ""
    },
    "domain": {
      "type": "string",
      "title": "Domain",
      "default": ""
    },
    "fields": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "title": "Fields"
    },
    "max_age_days": {
      "type": "integer",
      "title": "Max Age Days",
      "default": 30
    }
  }
}

entity_evidence_validate output schema

{
  "type": "object",
  "title": "entity_evidence_validateOutput",
  "required": [
    "result"
  ],
  "properties": {
    "result": {
      "type": "string",
      "title": "Result"
    }
  }
}

Prompts

0 advertised

No prompt definitions available.

Resources

0 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).

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: 1215 ms
95th percentile latency: 1215 ms

Maintenance history

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

Nov 6, 2026, 11:53 PM UTC · probe · passed · 1215 ms · metadata changed · 2 tool(s), 0 resource(s), 0 resource template(s), 0 prompt(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 mercator-verify-mcp https://mercator-entity-evidence.fly.dev/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 mercator-verify-mcp --url https://mercator-entity-evidence.fly.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable mercator-verify-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "mercator-verify-mcp": {
      "url": "https://mercator-entity-evidence.fly.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "mercator-verify-mcp": {
      "type": "streamableHttp",
      "url": "https://mercator-entity-evidence.fly.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start mercator-verify-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "mercator-verify-mcp": {
      "type": "http",
      "url": "https://mercator-entity-evidence.fly.dev/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 mercator-verify-mcp https://mercator-entity-evidence.fly.dev/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://mercator-entity-evidence.fly.dev/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": {
    "mercator-verify-mcp": {
      "serverUrl": "https://mercator-entity-evidence.fly.dev/mcp"
    }
  }
}

Let your agent find its tools

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