# Evermint Mcp

> MCP server for EverMint — Tamper-evident receipts for AI agent actions. The notary layer for agent-to-agent transactions.

- **Type:** MCP server
- **Install:** `agentstack add mcp-evermint-app-evermint-mcp`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [EverMint-app](https://agentstack.voostack.com/s/evermint-app)
- **Installs:** 0
- **Category:** [Integrations](https://agentstack.voostack.com/c/integrations)
- **Latest version:** 1.1.4
- **License:** MIT
- **Upstream author:** [EverMint-app](https://github.com/EverMint-app)
- **Source:** https://github.com/EverMint-app/evermint-mcp
- **Website:** https://evermint.app

## Install

```sh
agentstack add mcp-evermint-app-evermint-mcp
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# evermint-mcp

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

## Install

```bash
npm install -g evermint-mcp
```

## Claude Desktop config

Add to your `claude_desktop_config.json`:

```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

2. Add to your Claude desktop config (`~/.claude/claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "evermint": {
      "command": "npx",
      "args": ["-y", "evermint-mcp"],
      "env": {
        "EVERMINT_API_KEY": "EVR-sk_your_key_here"
      }
    }
  }
}
```

3. Restart Claude. The tools appear automatically.

## Tools

### `evermint_mint` (API key required)

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

```js
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.

```js
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).

```js
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.

```js
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.

```js
// 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

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [EverMint-app](https://github.com/EverMint-app)
- **Source:** [EverMint-app/evermint-mcp](https://github.com/EverMint-app/evermint-mcp)
- **License:** MIT
- **Homepage:** https://evermint.app

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v1.1.4 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **1.1.4** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-evermint-app-evermint-mcp
- Seller: https://agentstack.voostack.com/s/evermint-app
- Browse the marketplace: https://agentstack.voostack.com/browse

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