Error handling

@securelend/sdk@0.1.0-beta.5 exports these classes:

SecureLendError, with type and optional details
AuthenticationError (type authentication_error)
RateLimitError (type rate_limit_error, optional retryAfter)
ValidationError (type validation_error)
NotFoundError (type not_found)
NetworkError (type network_error)
ServerError (type server_error)

In the published dist/index.js, the client throws AuthenticationError when a connection error message contains 401, and NetworkError for other connection failures. ValidationError is thrown only in two cases. schema.parse throwing a ZodError becomes ValidationError (Invalid response from MCP server: failed to validate JSON content). The inner callTool throws ValidationError (Invalid tool arguments) when a caught error message contains 400. A response with no structuredContent and no text or application/json content item, a JSON.parse throw, or an invalid content structure becomes SecureLendError with type mcp_error (Invalid response from MCP server: failed to parse JSON content). Other tool failures become SecureLendError with type mcp_tool_error. RateLimitError, NotFoundError, and ServerError are exported. That file does not construct them. The client does not retry. No requests-per-minute figure is published in the package.

import {
  AuthenticationError,
  SecureLendError,
  ValidationError,
} from "@securelend/sdk";

try {
  // call a method from the JavaScript reference
} catch (error) {
  if (error instanceof AuthenticationError) {
    console.error(error.message);
  } else if (error instanceof ValidationError) {
    console.error(error.message);
  } else if (error instanceof SecureLendError) {
    console.error(error.type, error.message);
  } else {
    throw error;
  }
}

Codes INVALID_INPUT, NO_OFFERS, and UNAUTHORIZED are not defined in the published SDK. A loans HTTP API that returns those codes was not found in the public SecureLend/securelend repository. The platform repository could not be read, so this page does not describe HTTP status codes for that API.

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