Set up an MCP client

Set up an MCP client

Connect Claude Desktop, Cursor, Windsurf, or MCP Inspector to the hosted /mcp endpoint with OAuth or an API-key Authorization header.

Use this when

• An agent should create, read, list, amend, diff, or delete pastes on your behalf.
• You want scoped credentials instead of copying paste URLs by hand.

Do this

1. Add the endpoint Configure the client with https://pastebin.ca/mcp. Discovery metadata is available under the OAuth well-known URLs.
2. Authenticate Use the client OAuth flow when supported, or create an account API key and pass it as a Bearer header.
3. Verify tools Call whoami, then tools/list. Scope failures usually mean the token lacks paste:create, paste:read, paste:list, paste:edit, paste:revoke, or recipient:read.

Copyable commands

{
 "mcpServers": {
 "pastebin": {
 "url": "https://pastebin.ca/mcp",
 "headers": { "Authorization": "Bearer pbca_live_..." }
 }
 }
}

npx @modelcontextprotocol/inspector

Keep in mind

• create_paste is plaintext-only in MCP. Use create_encrypted_paste when the client has already encrypted ciphertext locally.
• OAuth access tokens for MCP are audience-bound to the resource endpoint.