mcpField
E
evermint-mcp

evermint-mcp

Local
github.com/EverMint-appSecurity1Updated 25w ago
Repository

About evermint-mcp

evermint-mcp records AI agent actions in tamper-evident, cryptographically timestamped receipts. It is for teams needing to inspect or verify individual records and hash-chained action histories.

Key features

  1. 01Mint timestamped action records
  2. 02Verify individual records
  3. 03List records with filters
  4. 04Retrieve full record payloads
  5. 05Verify hash-chained record sequences

Use cases

  1. 01Create an audit record for an agent decision
  2. 02Check the integrity of a record by ID
  3. 03Review an organization's action records
  4. 04Validate links across a sequence of records

MCP support

Exposes tools for creating, retrieving, listing, and verifying action records to MCP clients. Minting and organization record access require an API key; individual and chain verification are public.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "evermint-app-evermint": {
      "command": "npx",
      "args": [
        "-y",
        "evermint-mcp"
      ],
      "env": {
        "EVERMINT_API_KEY": "<EVERMINT_API_KEY>"
      }
    }
  }
}
Run commandnpx -y evermint-mcp
Environment variables to set
EVERMINT_API_KEYSecretYour EverMint API key (starts with EVR-sk_). Get one at https://evermint.app/api-keys

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npmevermint-mcp1.1.4

Tools

5

Saved tool list · updated 2w ago

ParameterTypeRequiredDescription
payloadobjectNoThe state, decision, or context to preserve. Any JSON object.
agent_idstringNoIdentifier for this agent or system
timestampstringNoISO 8601 datetime or 'auto'. Defaults to auto.
action_typestringYesShort label for the action being recorded (e.g. transaction_approved, decision_made, data_accessed)

Details

From the project README

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

[email protected]

Comments

Markdown supported

New to MCP?

From what the protocol is to installing your first server, these answers cover most first questions.

An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.