JavaScript SDK - API Reference - Corti API Documentation

The @corti/sdk package exports four main APIs:

Export	Import	Purpose
`CortiClient`	`import { CortiClient } from "@corti/sdk"`	Full API client with all resource groups, authentication, and WebSockets
`CortiAuth`	`import { CortiAuth } from "@corti/sdk"`	Standalone authentication client for token management and OAuth flows
`CortiWebSocketProxyClient`	`import { CortiWebSocketProxyClient } from "@corti/sdk"`	WebSocket-only proxy client for stream and transcribe
Utilities	`import { ... } from "@corti/sdk/utils"`	Token decoding, environment resolution, and PKCE helpers

CortiClient

The main client for all Corti API operations.

Constructor options

JavaScript

import { CortiClient } from "@corti/sdk";

const client = new CortiClient({
    environment: "<eu-or-us>",
    tenantName: "<your-tenant-name>",
    auth: { ... },                     // see Authentication Guide

    // Optional
    headers: { "X-Custom": "value" },  // headers sent with every request
    timeoutInSeconds: 60,              // default request timeout
    maxRetries: 2,                     // default retry count
    fetcher: customFetchFn,            // custom fetch implementation
    logging: { ... },                  // logging configuration
    withCredentials: false,            // include cookies in CORS requests
    encodeHeadersAsWsProtocols: false, // encode auth headers as WS subprotocols
});

Option	Type	Default	Description
`environment`	`CortiEnvironment \| CortiEnvironmentUrls \| string`	Required	API region or custom URLs
`tenantName`	`string`	Required	Your Corti tenant name
`auth`	`CortiClient.Auth`	Required	Authentication configuration (all flows)
`headers`	`Record<string, string>`	`undefined`	Headers sent with every request
`timeoutInSeconds`	`number`	`60`	Default request timeout
`maxRetries`	`number`	`2`	Default retry count
`fetcher`	`(url, init) => Promise<Response>`	`undefined`	Custom fetch implementation
`logging`	`{ level, logger, silent }`	`{ silent: true }`	Logging config
`withCredentials`	`boolean`	`false`	Include cookies in CORS requests
`encodeHeadersAsWsProtocols`	`boolean`	`false`	Encode auth as WS subprotocols (for restrictive gateways)
`baseUrl`	`string`	`undefined`	Route all traffic through a proxy

Request options

Every HTTP method accepts an optional request options object as the last argument:

JavaScript

const response = await client.interactions.create(
    { encounter: { identifier: "id", status: "planned", type: "first_consultation" } },
    {
        timeoutInSeconds: 30,
        maxRetries: 3,
        abortSignal: controller.signal,
        headers: { "X-Custom-Header": "value" },
        queryParams: { customKey: "customValue" },
    },
);

Option	Type	Description
`timeoutInSeconds`	`number`	Override the default 60s timeout
`maxRetries`	`number`	Override the default 2 retries
`abortSignal`	`AbortSignal`	Cancel the request
`headers`	`Record<string, string>`	Additional HTTP headers
`queryParams`	`Record<string, string>`	Additional query string parameters

Resource groups

The client exposes the following resource groups as properties:

Group	Description	API endpoints
`client.interactions`	Manage patient encounters and interaction sessions	Interactions API
`client.recordings`	Upload and retrieve audio recordings for interactions	Recordings API
`client.transcripts`	Create and retrieve transcriptions of recordings	Transcripts API
`client.documents`	Generate and manage AI-produced clinical documents	Documents API
`client.facts`	Extract and manage structured clinical facts	Facts API
`client.templates`	List and retrieve document generation templates	Templates API
`client.codes`	Predict medical codes from clinical data	Codes API
`client.agents`	Create and interact with AI agents	Agents API
`client.stream`	Real-time WebSocket streaming (transcription + facts)	Stream API
`client.transcribe`	Real-time WebSocket speech-to-text (standalone)	Transcribe API
`client.auth`	OAuth token management and authorization URLs	Auth API

Interactions

Manage interaction sessions that group recordings, transcripts, documents, and facts together.

// List interactions (paginated)
const page = await client.interactions.list({ limit: 10 });
for await (const interaction of page) {
    console.log(interaction.interactionId);
}

// Create a new interaction
const { interactionId } = await client.interactions.create({
    encounter: {
        identifier: "my-encounter-id",
        status: "planned",
        type: "first_consultation",
    },
});

// Get a specific interaction
const interaction = await client.interactions.get(interactionId);

// Update an interaction
await client.interactions.update(interactionId, {
    encounter: { status: "in-progress" },
});

// Delete an interaction
await client.interactions.delete(interactionId);

Method	Parameters	Returns
`list(request?)`	Filter and pagination options	Paginated list of interactions
`create(request)`	Interaction definition	Created interaction
`get(id)`	Interaction UUID	Single interaction
`update(id, request?)`	Interaction UUID + update fields	Updated interaction
`delete(id)`	Interaction UUID	`void`

Recordings

Upload and manage audio recordings within an interaction.

JavaScript

import { createReadStream } from "fs";

// Upload a recording
const { recordingId } = await client.recordings.upload(
    createReadStream("audio.mp3"),
    interactionId,
);

// List recordings for an interaction
const recordings = await client.recordings.list(interactionId);

// Download a recording (returns binary)
const binary = await client.recordings.get(interactionId, recordingId);
const stream = binary.stream();

// Delete a recording
await client.recordings.delete(interactionId, recordingId);

Method	Parameters	Returns
`upload(file, interactionId)`	Uploadable file + interaction UUID	Created recording
`list(interactionId)`	Interaction UUID	List of recordings
`get(interactionId, recordingId)`	Interaction UUID + recording UUID	Binary audio data
`delete(interactionId, recordingId)`	Interaction UUID + recording UUID	`void`

See File uploads for all supported file input types.

Transcripts

Create transcriptions from uploaded recordings and retrieve results.

JavaScript

// Create a transcript from a recording
const { id: transcriptId } = await client.transcripts.create(interactionId, {
    recordingId,
    primaryLanguage: "en",
});

// Check transcription status
const status = await client.transcripts.getStatus(interactionId, transcriptId);

// List transcripts for an interaction
const transcripts = await client.transcripts.list(interactionId);

// Get a specific transcript
const result = await client.transcripts.get(interactionId, transcriptId);

// Delete a transcript
await client.transcripts.delete(interactionId, transcriptId);

Method	Parameters	Returns
`create(interactionId, request)`	Interaction UUID + transcript definition	Created transcript
`getStatus(interactionId, transcriptId)`	Interaction UUID + transcript UUID	Transcription status
`list(interactionId, request?)`	Interaction UUID + optional filters	List of transcripts
`get(interactionId, transcriptId)`	Interaction UUID + transcript UUID	Single transcript
`delete(interactionId, transcriptId)`	Interaction UUID + transcript UUID	`void`

Documents

Generate AI-produced clinical documents (e.g. SOAP notes) from interaction data.

// Generate a document
const { id: documentId } = await client.documents.create(interactionId, {
    context: [{
        type: "string",
        data: "Patient presents with chest pain...",
    }],
    templateKey: "corti-soap",
    outputLanguage: "en",
});

// List documents for an interaction
const documents = await client.documents.list(interactionId);

// Get a specific document
const doc = await client.documents.get(interactionId, documentId);

// Update a document
await client.documents.update(interactionId, documentId, {
    name: "Updated note",
});

// Delete a document
await client.documents.delete(interactionId, documentId);

Method	Parameters	Returns
`create(interactionId, request)`	Interaction UUID + document generation options	Generated document
`list(interactionId)`	Interaction UUID	List of documents
`get(interactionId, documentId)`	Interaction UUID + document UUID	Single document
`update(interactionId, documentId, request?)`	Interaction UUID + document UUID + update fields	Updated document
`delete(interactionId, documentId)`	Interaction UUID + document UUID	`void`

Facts

Extract structured clinical facts from text or manage facts on an interaction.

// Extract facts from text (standalone, no interaction needed)
const extracted = await client.facts.extract({
    context: [{ type: "text", text: "Patient has a temperature of 38.5°C and reports headache." }],
    outputLanguage: "en",
});

// List facts for an interaction
const facts = await client.facts.list(interactionId);

// Create facts on an interaction
const { id: factId } = await client.facts.create(interactionId, {
    facts: [{ text: "Temperature 38.5°C", group: "vitals" }],
});

// Batch update facts
await client.facts.batchUpdate(interactionId, {
    facts: [{ factId, text: "Temperature 39.0°C" }],
});

// Update a single fact
await client.facts.update(interactionId, factId, { text: "Temperature 39.0°C" });
// List available fact groups
const groups = await client.facts.factGroupsList();

Method	Parameters	Returns
`extract(request)`	Extraction options (context, output language)	Extracted facts
`list(interactionId)`	Interaction UUID	List of facts
`create(interactionId, request)`	Interaction UUID + fact definitions	Created facts
`batchUpdate(interactionId, request)`	Interaction UUID + fact updates	Updated facts
`update(interactionId, factId, request?)`	Interaction UUID + fact ID + update fields	Updated fact
`factGroupsList()`	None	Available fact group definitions

Templates

List and inspect document generation templates available to your tenant.

JavaScript

// List all templates
const templates = await client.templates.list();

// Get a specific template by key
const template = await client.templates.get("corti-soap");

// List template sections
const sections = await client.templates.sectionList();

Method	Parameters	Returns
`list(request?)`	Optional filters	List of templates
`get(key)`	Template key string	Single template
`sectionList(request?)`	Optional filters	List of template sections

Codes

Predict medical codes from clinical data.

JavaScript

const response = await client.codes.predict({
  system: ["icd10cm-inpatient"],
  context: [
    {
      type: "text",
      text: "Progress Note — Day 3: Patient continues on IV vancomycin for MRSA bacteremia. Blood cultures from yesterday still pending. Acute kidney injury improving — creatinine down to 1.8 from 2.4. Patient also has history of CHF, currently euvolemic on home dose of furosemide. Diabetes managed with insulin sliding scale, glucose well controlled.",
    },
  ],
});

Method	Parameters	Returns
`predict(request)`	Prediction options (text, code system)	Code predictions

Agents

Create and interact with AI agents (Agentic Framework).

JavaScript

// Replace these with your values
const TASK_ID = "<your-task-id>";
const CONTEXT_ID = "<your-context-id>";

// List agents
const agents = await client.agents.list();

// Create an agent
const agent = await client.agents.create({
    name: "My Agent",
    description: "A helpful assistant",
});

// Get agent details
const details = await client.agents.get(agent.id);

// Get agent card (A2A)
const card = await client.agents.getCard(agent.id);

// Send a message to an agent
const response = await client.agents.messageSend(agent.id, {
    message: {
        role: "user",
        parts: [{ kind: "text", text: "Hello" }],
        messageId: crypto.randomUUID(),
        kind: "message",
    },
});

// Get a task
const task = await client.agents.getTask(agent.id, TASK_ID);

// Get context
const context = await client.agents.getContext(agent.id, CONTEXT_ID);

// List registry experts
const experts = await client.agents.getRegistryExperts();

// Update an agent
await client.agents.update(agent.id, { description: "Updated" });

// Delete an agent
await client.agents.delete(agent.id);

Method	Parameters	Returns
`list(request?)`	Optional filters	List of agents
`create(request)`	Agent definition	Created agent
`get(id)`	Agent ID	Agent details
`getCard(id)`	Agent ID	Agent card (A2A format)
`messageSend(id, request)`	Agent ID + message payload	Agent response
`getTask(id, taskId, request?)`	Agent ID + task ID	Task details
`getContext(id, contextId, request?)`	Agent ID + context ID	Context details
`getRegistryExperts(request?)`	Optional filters	Registry experts
`update(id, request?)`	Agent ID + update fields	Updated agent
`delete(id)`	Agent ID	`void`

Stream

Real-time WebSocket connection for combined transcription, fact extraction, and more — tied to an interaction.

const socket = await client.stream.connect({
    id: interactionId,
    configuration: {
        transcription: {
            primaryLanguage: "en",
            participants: [{ channel: 0, role: "doctor" }],
        },
        mode: { type: "facts", outputLocale: "en" },
    },
});

socket.on("message", (msg) => {
    console.log(msg.type, msg.data);
});

socket.sendAudio(audioBuffer);

`connect` parameters

Parameter	Type	Required	Description
`id`	`string`	Yes	Interaction UUID to attach the stream to
`configuration`	`Corti.StreamConfig`	No	Stream configuration (transcription language, participants, mode). When provided, the SDK automatically sends the config message once the socket opens. If omitted, you must call `sendConfiguration()` yourself
`awaitConfiguration`	`boolean`	No	When `true` (default), `connect()` waits for `CONFIG_ACCEPTED` before resolving. When `false`, returns the socket immediately and dispatches config errors as events
`proxy`	`ProxyOptions`	No	Route through a proxy instead of connecting directly. Connects to the provided URL exactly as-is (no endpoint path is appended)
`debug`	`boolean`	No	Enable debug logging
`reconnectAttempts`	`number`	No	Number of reconnection attempts on disconnect

The SDK injects tenantName and token automatically. If configuration is provided and awaitConfiguration is true, the promise rejects when the stream configuration is denied (CONFIG_DENIED, CONFIG_MISSING, CONFIG_NOT_PROVIDED).

Socket methods

Method	Description
`on(event, handler)`	Subscribe to events: `"open"`, `"message"`, `"close"`, `"error"`
`off(event, handler?)`	Remove an event handler
`sendAudio(data)`	Send binary audio data (`ArrayBuffer`, `Blob`, or `ArrayBufferView`)
`sendFlush(message)`	Request the server to flush buffered audio and return results
`sendEnd(message)`	Signal end of audio stream
`sendConfiguration(message)`	Send a configuration message (used internally by `connect`)
`send(data)`	Send raw data directly on the underlying WebSocket
`close()`	Close the connection and unregister event handlers. You should call `sendEnd()` first and wait for the `ended` message before closing — see Flush the Audio Buffer
`waitForOpen()`	Returns a promise that resolves when the socket is open
`readyState`	Current connection state (property, not method)

Transcribe

Real-time WebSocket speech-to-text without an interaction context.

JavaScript

const socket = await client.transcribe.connect({
  configuration: {
    primaryLanguage: "en",
    automaticPunctuation: true,
  },
});

socket.on("message", (message) => {
  if (message.type === "transcript") {
    console.log("Transcript:", message.data.text);
  }
});

// Send audio data (e.g. from a microphone stream)
socket.sendAudio(audioBuffer);

`connect` parameters

Parameter	Type	Required	Description
`configuration`	`Corti.TranscribeConfig`	No	Transcribe configuration (language, punctuation, commands). When provided, the SDK automatically sends the config message once the socket opens. If omitted, you must call `sendConfiguration()` yourself
`awaitConfiguration`	`boolean`	No	When `true` (default), `connect()` waits for `CONFIG_ACCEPTED` before resolving. When `false`, returns the socket immediately and dispatches config errors as events
`proxy`	`ProxyOptions`	No	Route through a proxy instead of connecting directly. Connects to the provided URL exactly as-is (no endpoint path is appended)
`debug`	`boolean`	No	Enable debug logging
`reconnectAttempts`	`number`	No	Number of reconnection attempts on disconnect

The socket methods are the same as Stream (sendAudio, sendFlush, sendEnd, close, etc.). The key differences are:

No interaction ID — Transcribe operates standalone
Different message types — Transcribe delivers transcript, command, flushed, ended, usage, delta_usage, and error messages, while Stream delivers transcript, facts, flushed, ended, usage, delta_usage, and error

Auth

OAuth token management. In most cases you won’t call these directly — the SDK handles tokens automatically based on the auth option you pass to the constructor. These methods are useful for advanced scenarios like generating authorization URLs for browser-based flows.

Method	Description
`getToken(request)`	Get a token via client credentials
`getRopcFlowToken(request)`	Get a token via ROPC flow
`getCodeFlowToken(request)`	Exchange an authorization code for a token
`getPkceFlowToken(request)`	Exchange a PKCE authorization code for a token
`refreshToken(request)`	Refresh an expired token
`authorizeURL(options)`	Generate an authorization code flow URL and redirect to it
`authorizePkceUrl(options)`	Generate a PKCE flow redirect URL

For detailed usage and end-to-end examples, see the Authentication Guide. For standalone use without CortiClient, see CortiAuth below.

CortiAuth

A standalone authentication client for when you need OAuth token management without the full CortiClient. Useful for proxy servers, custom backends, or applications that handle tokens separately from API calls.

JavaScript

import { CortiAuth } from "@corti/sdk";

const auth = new CortiAuth({
    environment: "<eu-or-us>",
    tenantName: "<your-tenant-name>",
});

Constructor options

Option	Type	Required	Description
`environment`	`CortiEnvironment \| CortiEnvironmentUrls \| string`	Yes	API region or custom URLs
`tenantName`	`string`	Yes	Your Corti tenant name
`headers`	`Record<string, string>`	No	Additional headers
`timeoutInSeconds`	`number`	No	Request timeout
`maxRetries`	`number`	No	Retry count

Methods

All token methods accept an optional scopes array. openid and profile are added automatically — pass additional scopes like "streams" or "transcribe" to get a scoped token.

Method	Description	Returns
`getToken(request)`	Get a token via client credentials	`AuthTokenResponse`
`getRopcFlowToken(request)`	Get a token via ROPC flow	`AuthTokenResponse`
`getCodeFlowToken(request)`	Exchange an authorization code for a token	`AuthTokenResponse`
`getPkceFlowToken(request)`	Exchange a PKCE authorization code for a token	`AuthTokenResponse`
`refreshToken(request)`	Refresh an expired token	`AuthTokenResponse`
`authorizeURL(options)`	Generate an authorization code flow URL and redirect to it	`string`
`authorizePkceUrl(options)`	Generate a PKCE flow redirect URL	`string`
`CortiAuth.getCodeVerifier()`	Get the PKCE code verifier from the last `authorizePkceUrl` call (static)	`string \| null`

For end-to-end examples and detailed usage of each method, see the Authentication Guide.

CortiWebSocketProxyClient

A lightweight client for WebSocket-only proxy scenarios. Unlike CortiClient, it requires no environment, tenant, or authentication configuration — all routing is handled by the proxy option you pass at connect time.

JavaScript

import { CortiWebSocketProxyClient } from "@corti/sdk";

Static properties

Property	Type	Description
`stream`	`CustomProxyStream`	Stream proxy client (transcription + facts, tied to an interaction)
`transcribe`	`CustomProxyTranscribe`	Transcribe proxy client (standalone speech-to-text)

`stream.connect`

const socket = await CortiWebSocketProxyClient.stream.connect({
    proxy: {
        url: "wss://your-proxy.com/corti/stream",
        protocols: ["custom-protocol"],
        queryParameters: { interactionId: "id" },
    },
    configuration: {
        transcription: {
            primaryLanguage: "en",
            participants: [{ channel: 0, role: "doctor" }],
        },
        mode: { type: "facts", outputLocale: "en" },
    },
    awaitConfiguration: true, // default: true
    debug: false,
    reconnectAttempts: 3,
});

socket.on("message", (msg) => console.log(msg.type, msg.data));
socket.sendAudio(audioBuffer);

Parameter	Type	Required	Description
`proxy`	`ProxyOptions`	Yes	Proxy URL, subprotocols, and query parameters. Connects to the provided URL exactly as-is (no endpoint path is appended)
`configuration`	`Corti.StreamConfig`	No	Stream configuration (language, punctuation, etc.)
`awaitConfiguration`	`boolean`	No	Wait for `CONFIG_ACCEPTED` before resolving (default `true`)
`debug`	`boolean`	No	Enable debug logging
`reconnectAttempts`	`number`	No	Number of reconnection attempts

Returns Promise<CustomStreamSocket> — same socket API as client.stream.connect.

`transcribe.connect`

const socket = await CortiWebSocketProxyClient.transcribe.connect({
    proxy: {
        url: "wss://your-proxy.com/corti/transcribe",
    },
    configuration: {
        primaryLanguage: "en",
        automaticPunctuation: true,
    },
});

socket.on("message", (msg) => {
    if (msg.type === "transcript") {
        console.log(msg.data.text);
    }
});
socket.sendAudio(audioBuffer);

Parameter	Type	Required	Description
`proxy`	`ProxyOptions`	Yes	Proxy URL, subprotocols, and query parameters. Connects to the provided URL exactly as-is (no endpoint path is appended)
`configuration`	`Corti.TranscribeConfig`	No	Transcribe configuration (language, punctuation, etc.)
`awaitConfiguration`	`boolean`	No	Wait for `CONFIG_ACCEPTED` before resolving (default `true`)
`debug`	`boolean`	No	Enable debug logging
`reconnectAttempts`	`number`	No	Number of reconnection attempts

Returns Promise<CustomTranscribeSocket> — same socket API as client.transcribe.connect.

`ProxyOptions`

The ProxyOptions type is also exported from @corti/sdk for use when typing proxy arguments in your own code.

JavaScript

import type { ProxyOptions } from "@corti/sdk";

Property	Type	Required	Description
`url`	`string`	Yes	WebSocket URL of your proxy server
`protocols`	`string[] \| Record<string, string>`	No	WebSocket subprotocols. Arrays are passed as-is; objects are encoded as `[name, encodeURIComponent(value), ...]` pairs
`queryParameters`	`Record<string, string>`	No	Query parameters appended to the WebSocket URL

For a full walkthrough of proxy patterns (including baseUrl, custom environments, encodeHeadersAsWsProtocols, and scoped tokens), see the Proxy Guide.

Utilities

The @corti/sdk/utils sub-package exports helper functions for token inspection, environment resolution, and PKCE. These are useful in proxy servers, middleware, and custom authentication flows.

JavaScript

import {
    decodeToken,
    getEnvironment,
    generateCodeVerifier,
    generateCodeChallenge
} from "@corti/sdk/utils";

Export	Description
`decodeToken(token)`	Decode a Corti JWT to extract `environment`, `tenantName`, `accessToken`, and `expiresAt`. Returns `null` if the token is invalid or the issuer doesn’t match
`getEnvironment(env)`	Normalize an environment string (e.g. `"eu"`) or `CortiEnvironment` object into the internal URL format the SDK uses
`generateCodeVerifier()`	Generate a PKCE code verifier (32 random bytes, base64url-encoded)
`generateCodeChallenge(verifier)`	Compute the PKCE code challenge from a verifier (SHA-256, base64url-encoded). Returns a `Promise`
`DecodedToken`	TypeScript type for the return value of `decodeToken`

Guides

SDKs

Start Building

Release Notes

Resources

JavaScript SDK - API Reference

CortiClient

Constructor options

Request options

Resource groups

Interactions

Recordings

Transcripts

Documents

Facts

Templates

Codes

Agents

Stream

`connect` parameters

Socket methods

Transcribe

`connect` parameters

Auth

CortiAuth

Constructor options

Methods

CortiWebSocketProxyClient

Static properties

`stream.connect`

`transcribe.connect`

`ProxyOptions`

Utilities

Guides

SDKs

Start Building

Release Notes

Resources

Documentation Index

​CortiClient

​Constructor options

​Request options

​Resource groups

​Interactions

​Recordings

​Transcripts

​Documents

​Facts

​Templates

​Codes

​Agents

​Stream

​connect parameters

​Socket methods

​Transcribe

​connect parameters

​Auth

​CortiAuth

​Constructor options

​Methods

​CortiWebSocketProxyClient

​Static properties

​stream.connect

​transcribe.connect

​ProxyOptions

​Utilities

CortiClient

Constructor options

Request options

Resource groups

Interactions

Recordings

Transcripts

Documents

Facts

Templates

Codes

Agents

Stream

`connect` parameters

Socket methods

Transcribe

`connect` parameters

Auth

CortiAuth

Constructor options

Methods

CortiWebSocketProxyClient

Static properties

`stream.connect`

`transcribe.connect`

`ProxyOptions`

Utilities