Developer utilities over MCP: Base64 encode and decode, decode JWTs, format JSON, do percentages.
Connect Remote server
claude mcp add --transport http razi-dev https://www.razi.pro/api/mcp/dev --header "Authorization: Bearer <YOUR_API_KEY>"
{
"mcpServers": {
"razi-dev": {
"url": "https://www.razi.pro/api/mcp/dev",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
{
"servers": {
"razi-dev": {
"type": "http",
"url": "https://www.razi.pro/api/mcp/dev",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
Settings > Connectors > Add custom connector
URL: https://www.razi.pro/api/mcp/dev
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools 5 found in our last check
encode_base64Encode UTF-8 text as standard Base64 (padded, A-Z a-z 0-9 + /), for embedding binary-unsafe content in JSON, data URIs, HTTP headers or Basic auth. Returns JSON { encoded }. The output uses the standard alphabet, so it is NOT URL-safe: '+' and '/' must still be percent-escaped b…
decode_base64Decode a Base64 string back to UTF-8 text. Returns JSON { decoded }. Input is verified by re-encoding, so anything that is not genuine Base64 is rejected with an error instead of returning plausible garbage; binary payloads that are not valid UTF-8 will also fail. It handles Bas…
decode_jwtDecode a JWT's header and payload for inspection. Returns JSON { header, payload, signatureVerified, note, expiresAt, isExpired } — structured objects, not a rendered table. The signature is NEVER verified: that needs the issuer's key, which this service does not have, so signat…
format_jsonValidate and re-print a JSON string. Returns JSON { valid, formatted, minified } — the indented form and the whitespace-free form as plain strings, with no syntax highlighting or colour. Invalid JSON is rejected with the parser's own error message rather than returned as valid:f…
calculate_percentageRun one of four percentage calculations on two numbers. Returns JSON { operation, result } (plus unit: 'percent' for the 'change' operation). The meaning of value1 and value2 depends on the operation, so read their descriptions before calling. Exact arithmetic, no model involved…
Headers
| Name | Description |
|---|---|
AuthorizationOptional, secret | Optional. 'Bearer rz_...' raises rate limits and attributes usage. |
Details
| Endpoint | https://www.razi.pro/api/mcp/dev (Streamable HTTP) |
| First published | 8 Sep 2026 |
| Last updated | 8 Sep 2026 |
| Registry name | io.github.razikallayi/razi-dev |
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