# base64_encode

encode text to base64

Agent View of the PolicyLayer registry record for `base64_encode`. HTML page: https://policylayer.com/tools/1595901624-crypto-mcp/base64-encode

## Facts

- Tool: `base64_encode`
- Server: Crypto_MCP (`1595901624/crypto-mcp`) — https://policylayer.com/tools/1595901624-crypto-mcp.md
- Homepage: https://github.com/1595901624/crypto-mcp
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "base64_encode",
    "arguments": {}
  }
}
```

## Why base64_encode is rated Low

Base64 encoding is a pure data transformation operation. It reads input text and returns an encoded string. There are no side effects, no data persistence, no external operations, and it is fully reversible. This qualifies as a Read/transform operation with minimal risk.

From the tool's own definition: "'encode text to base64' — transforms input text into base64 representation with no side effects, no storage, no external calls"

## Use case

AI agents call base64_encode to retrieve information from Crypto_MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Crypto_MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "base64_encode": {}
  }
}
```

## Other tools on Crypto_MCP (13)

- `des_encrypt` — Execute — https://policylayer.com/tools/1595901624-crypto-mcp/des-encrypt.md
- `aes_encrypt` — Other — https://policylayer.com/tools/1595901624-crypto-mcp/aes-encrypt.md
- `aes_decrypt` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/aes-decrypt.md
- `base64_decode` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/base64-decode.md
- `des_decrypt` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/des-decrypt.md
- `hex_decode` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/hex-decode.md
- `hex_encode` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/hex-encode.md
- `md5` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/md5.md
- `sha1` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/sha1.md
- `sha224` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/sha224.md
- `sha256` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/sha256.md
- `sha384` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/sha384.md
- `sha512` — Read — https://policylayer.com/tools/1595901624-crypto-mcp/sha512.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=1595901624-crypto-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/1595901624-crypto-mcp