Struct DcrClient 

pub struct DcrClient { /* private fields */ }

Dynamic Client Registration client

Example

use turbomcp_auth::oauth2::dcr::{DcrClient, DcrBuilder};

let client = DcrClient::new(
    "https://auth.example.com/register".to_string(),
    None,
);

let request = DcrBuilder::mcp_client("My App", "http://localhost:3000/callback")
    .with_scopes(vec!["mcp:tools".to_string()])
    .build();

let response = client.register(request).await?;
println!("Registered! Client ID: {}", response.client_id);

Implementations

impl DcrClient

pub fn new(endpoint: String, initial_access_token: Option<String>) -> Self

Create a new DCR client

Arguments

• endpoint - Registration endpoint URL (from AS metadata registration_endpoint)
• initial_access_token - Optional token for authenticated registration

Example

use turbomcp_auth::oauth2::dcr::DcrClient;

// Open registration (no token required)
let client = DcrClient::new(
    "https://auth.example.com/register".to_string(),
    None,
);

// Authenticated registration
let auth_client = DcrClient::new(
    "https://auth.example.com/register".to_string(),
    Some("initial_access_token_here".to_string()),
);

pub async fn register( &self, request: RegistrationRequest, ) -> McpResult<RegistrationResponse>

Register a new OAuth client

Arguments

• request - Client registration metadata

Returns

Registration response with client_id, client_secret, and metadata

Errors

Returns error if:

• HTTP request fails
• Server rejects registration
• Response is malformed

Example

let request = DcrBuilder::mcp_client("My App", "http://localhost:3000/callback")
    .build();

let response = client.register(request).await?;

pub async fn update( &self, registration_uri: &str, access_token: &str, request: RegistrationRequest, ) -> McpResult<RegistrationResponse>

Update an existing client registration (RFC 7592)

Requires the registration_access_token from the original registration.

Example

// Update the registration
let updated = DcrBuilder::mcp_client("Updated App Name", "http://localhost:3000/callback")
    .with_scopes(vec!["mcp:tools".to_string(), "mcp:resources".to_string()])
    .build();

let response = client.update(
    &original_response.registration_client_uri.unwrap(),
    &original_response.registration_access_token.unwrap(),
    updated,
).await?;

pub async fn delete( &self, registration_uri: &str, access_token: &str, ) -> McpResult<()>

Delete a client registration (RFC 7592)

Requires the registration_access_token from the original registration.

Trait Implementations

impl Clone for DcrClient

fn clone(&self) -> DcrClient

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DcrClient

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.