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io.github.EverMint-app/evermint-mcp

Mint tamper-evident receipts for AI agent actions. The notary layer for agent-to-agent transactions.

Developer ToolsJavaScriptv1.1.4

evermint-mcp

Tamper-evident receipts for AI agent actions. The notary layer for agent-to-agent transactions.

Install

npm install -g evermint-mcp

Claude Desktop config

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "evermint": {
      "command": "evermint-mcp",
      "env": {
        "EVERMINT_API_KEY": "EVR-sk_your_key_here"
      }
    }
  }
}

Get an API key at https://evermint.app/api-keys

  1. Add to your Claude desktop config (~/.claude/claude_desktop_config.json):
{
  "mcpServers": {
    "evermint": {
      "command": "npx",
      "args": ["-y", "evermint-mcp"],
      "env": {
        "EVERMINT_API_KEY": "EVR-sk_your_key_here"
      }
    }
  }
}
  1. Restart Claude. The tools appear automatically.

Tools

evermint_mint (API key required)

Mint a tamper-evident, cryptographically timestamped record of an action.

evermint_mint({
  agent_id: "billing-agent-1",
  action_type: "decision_made",
  payload: { decision: "approved", confidence: 0.97 }
})

evermint_verify (public)

Verify a single record by Record ID.

evermint_verify({ record_id: "EVR-12C5N1A2" })

evermint_list_records (API key required)

List records for the authenticated org with optional filters. Returns metadata only (no payloads).

evermint_list_records({
  agent_id: "billing-agent-1",
  action_type: "decision_made",
  since: "2026-01-01T00:00:00Z",
  until: "2026-05-01T00:00:00Z",
  limit: 50
})

All filters are optional. limit defaults to 50 (max 200).

evermint_get_record (API key required)

Fetch the full contents of a single record, including its original payload. Returns 403 if the record exists but belongs to a different organization.

evermint_get_record({ record_id: "EVR-12C5N1A2" })

evermint_verify_chain (public)

Verify a sequence of hash-chained records. Confirms each hash matches its content, and each chain_link correctly references the prior record.

// Explicit list, oldest first
evermint_verify_chain({
  record_ids: ["EVR-AAAAAAAA", "EVR-BBBBBBBB", "EVR-CCCCCCCC"]
})

// Or walk forward from a starting point
evermint_verify_chain({
  start_record_id: "EVR-AAAAAAAA",
  length: 10
})

Returns per-record hash_valid, chain_link_valid, plus an overall chain_intact: true|false.

Verify any record

evermint.app/verify?id=EVR-XXXXXXXX

Publishing

To publish to npm as evermint-mcp:

  • package.json name: "evermint-mcp"
  • bin entry: { "evermint-mcp": "./dist/server.js" }
  • Add to Anthropic MCP registry at modelcontextprotocol.io/registry

Contact

info@evermint.app

Installation

Source-derived launch command. Check the maintainer’s required arguments and credentials before running:

bash
npx -y evermint-mcp

Set up in your AI client

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json
{
  "mcpServers": {
    "io-github-evermint-app-evermint-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "evermint-mcp"
      ]
    }
  }
}

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Package

evermint-mcpnpm

Compatible MCP Clients

io.github.EverMint-app/evermint-mcp works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

  • Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.
  • Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.
  • VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.
  • Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.
  • Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

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