Vapi

artificial intelligence 38 tools available

Vapi is a voice AI platform that enables developers to build, test, and deploy voice agents with natural conversations, real-time responses, and seamless integration capabilities.

Connect Vapi Visit Vapi

About this integration

Connect Vapi to Definable to route to the best model per task, mix providers in one workflow, fall back on rate-limits. Personas call Vapi's 38 tools directly from chat or scheduled flows. Add it to your persona's available models and route requests to it where it fits best.

Connect Vapi to Definable and it becomes a set of typed tools your agents plan with — triggered by events, run on schedules, or invoked mid-conversation. Every write is checked by the verifier before it lands.

Auth OAuth2 · 2 clicks

Tools 38 exposed

Plans All, incl. Free

Data Never trained on

Vapi · in workflows

What teams actually run.

Three patterns teams run with Vapi on day one. Each one is a plain-English prompt — no canvas, no glue code — and you can remix them into anything.

Multi-provider routing

│ Persona decides which model fits

│ Calls this provider when its strengths apply

└ Falls back to alternatives on rate-limits

Specialised pipeline

│ Use this provider for one stage

│ Pipe to a different model for the next

└ Combine outputs in the response

38 tools available

The Vapi toolbox.

Every Vapi capability your agents can call, each with a typed schema the planner reads. The router picks the right tool per step; the verifier checks the result.

Update Assistant

Tool to update an existing Vapi assistant configuration. Use when you need to modify assistant properties such as name, voice settings, transcriber configuration, model settings, messages, or other behavior parameters. Only include fields you want to update.

List Calls

Tool to list calls from Vapi. Use when you need to retrieve multiple calls with optional filtering by id, assistantId, phoneNumberId, or date ranges. Returns an array of call objects with details including status, costs, messages, and artifacts.

Delete Chat

Tool to delete a chat by its ID from Vapi. Use when you need to permanently remove a chat conversation.

Get Chat

Tool to fetch chat details by ID. Use when you have a chat ID and need full chat information including messages, costs, and configuration.

Create Analytics Queries

Tool to create and execute analytics queries on VAPI data. Use when you need to analyze call or subscription metrics with aggregations like count, sum, average, min, or max. Supports grouping by various dimensions and time-based analysis with custom time ranges.

Create Assistant

Tool to create a new Vapi assistant with specified transcriber, voice, and AI model configurations. Use when setting up a conversational AI assistant for voice interactions. The assistant requires transcription (speech-to-text), voice (text-to-speech), and AI model (conversation logic) configurations at minimum.

Create Eval

Tool to create an eval for testing conversation flows. Use when you need to validate that an AI assistant responds correctly to specific conversation scenarios.

Create OpenAI Chat

Tool to create an OpenAI-compatible chat using the Vapi API. Use when you need to send a chat message to an assistant or squad and receive a response. Supports both streaming and non-streaming modes.

Create Monitoring Policy

Tool to create a monitoring policy in VAPI. Use when you need to set up automated monitoring rules based on thresholds and time windows. Policies can trigger alerts based on event counts or percentages over a specified lookback window.

Create Provider Resource

Tool to create an 11Labs pronunciation dictionary resource. Use when you need to define custom pronunciations for specific terms or acronyms in voice synthesis.

Create Scorecard

Tool to create a scorecard for observability and evaluation. Use when setting up metrics to evaluate assistant performance based on structured outputs. Scorecards contain metrics with conditions that calculate normalized scores on a 100-point scale.

Delete Call

Tool to delete a call by its unique identifier. Use when you need to remove call data from the system. Returns the deleted call object with all its associated data.

Delete Eval

Tool to delete an eval by ID. Use when you need to permanently remove an eval from the system.

Delete Phone Number

Tool to delete a phone number from Vapi. Use when you need to remove a phone number from your Vapi organization. Returns the deleted phone number object.

Get Eval

Tool to retrieve an eval by its ID. Use when you need to fetch details about a specific eval including its mock conversation messages and metadata.

Delete Eval Run

Tool to delete an eval run by its ID from Vapi. Use when you need to permanently remove an evaluation run.

Update Eval

Tool to update an existing eval in Vapi. Use when you need to modify eval properties like name, description, type, or mock conversation messages.

Get Assistant

Tool to retrieve a specific assistant by ID from Vapi. Use when you need to fetch details about an existing assistant.

Get Call

Tool to fetch call details by ID. Use when you have a call ID and need full call information including status, duration, costs, messages, and recordings.

Get File

Tool to retrieve a file by its ID from Vapi. Use when you need to get details about a specific file including its status, metadata, storage location, and timestamps.

List Monitoring Policies

Tool to retrieve monitoring policies from Vapi. Use when you need to list, filter, or search for monitoring policies configured in the organization. Supports filtering by policy ID, severity level, monitor ID, and date ranges for creation/update timestamps.

List Structured Outputs

Tool to list structured outputs with optional filtering. Use when you need to retrieve structured output configurations with pagination support. Supports filtering by ID, name, timestamps, and includes pagination controls.

Get Insights

Tool to retrieve insights from VAPI. Use when you need to list insights with optional filtering by ID, creation date, or update date. Supports pagination and sorting.

List Assistants

Tool to list all assistants in your VAPI organization. Use when you need to retrieve information about configured assistants. Supports filtering by creation and update timestamps.

List Chats

Tool to retrieve a list of chat conversations from VAPI. Use when you need to view existing chats, optionally filtered by assistant, squad, session, or time range. Supports pagination and sorting for efficient retrieval of large chat histories.

List Evals

Tool to retrieve a paginated list of evals from Vapi. Use when you need to list or search evals with optional filtering by creation/update timestamps.

List Phone Numbers

Tool to list phone numbers in the Vapi organization. Use when you need to enumerate available phone numbers for routing or selection workflows. Supports filtering by creation and update timestamps.

List Provider Resources

Tool to retrieve provider resources from Vapi (e.g., 11labs pronunciation dictionaries). Use when you need to list or search provider-specific resources with optional filtering by timestamps.

Update Insight

Tool to update an existing insight configuration in VAPI. Use when you need to modify insight properties like name, queries, time range, or visualization settings. Supports all four insight types (bar, pie, line, text) with type-specific configurations.

Create Phone Number

Tool to create a phone number with VAPI. Use when you need to provision a new phone number for voice AI applications. Supports multiple providers (VAPI, Twilio, Vonage, Telnyx, BYO). Required parameters vary by provider.

List Scorecards

Tool to retrieve a paginated list of scorecards from Vapi. Use when you need to list or search scorecards with optional filtering by creation/update timestamps.

Create Session

Tool to create a new session in Vapi. Use when you need to establish a persistent conversation context that can span multiple chats. Sessions automatically expire after 24 hours.

List Sessions

Tool to retrieve a paginated list of sessions from VAPI. Use when you need to list sessions with optional filtering by session ID, name, assistant, squad, or workflow. Supports pagination, sorting, and timestamp-based filtering.

Get Tool

Tool to fetch tool details by ID. Use when you have a tool ID and need full tool configuration including type, messages, function definitions, and server settings.

Test Code Tool Execution

Tool to test TypeScript code execution in Vapi's code tool environment. Use when validating code before deploying it as a tool.

Update Tool

Tool to update an existing Vapi tool configuration. Use when you need to modify tool properties such as function definitions, server settings, messages, or other tool-specific parameters.

Update Phone Number

Tool to update an existing phone number configuration in VAPI. Use when you need to modify phone number settings such as name, associated assistant/workflow, or provider-specific configurations.

Upload File

Tool to upload a file to Vapi Knowledge Base. Use when you need to add files for AI assistants to reference. Returns file metadata including ID, storage URLs, and processing status.

See it run

One prompt, start to finish.

A real prompt, the Vapi tools it calls, and what comes back. This is the whole interface — describe the outcome, agents handle the rest.

❯

Run a real Vapi task end-to-end — plan it, execute across the API, and hand back a verified result.

vapi.update_assistant Tool to update an existing Vapi assistant configuration. Use when you need to modify assis

vapi.list_calls Tool to list calls from Vapi. Use when you need to retrieve multiple calls with optional f

vapi.delete_chat Tool to delete a chat by its ID from Vapi. Use when you need to permanently remove a chat · verified

done

Done. Vapi responded across 3 calls, the verifier signed off, and the result is logged with every payload.

FAQ · Vapi

Questions, answered.

What teams ask before connecting Vapi.

01 What can I automate with Vapi on Definable?

Anything Vapi exposes through its API. Common artificial intelligence workflows on Definable include route to the best model per task, mix providers in one workflow, fall back on rate-limits. Personas can call any of the 38 Vapi tools directly, then chain the result into another integration without you writing code.

02 How does Vapi authentication work?

Vapi uses API_KEY on Definable. You connect once from the integrations page, scoped to the permissions you choose, and from then on any persona that has the integration enabled can act on your behalf. Tokens are encrypted at rest and rotated automatically.

03 Is the Vapi integration included in my Definable plan?

Yes — every Definable plan, including Starter, includes access to all 38 Vapi tools. You only need a separate Vapi subscription if Vapi itself charges per seat or per API call.

04 Is using Vapi through Definable secure?

Every call from a persona to Vapi is logged with the user, persona, prompt, and response. Tokens never leave Definable's secrets vault, scopes are configurable per persona, and you can revoke access at any time from the integration page.

05 How do I get started with Vapi on Definable?

Sign up for Definable, open the integrations page, find Vapi, and connect via OAuth or API key. You can immediately attach Vapi to any persona and start running workflows. The free Starter plan includes 5,000 credits/month.

06 What Vapi actions does Definable expose?

Definable exposes all 38 Vapi actions as callable tools — including `Update Assistant`, `List Calls`, `Delete Chat`, plus 35 more. Each tool gets a typed parameter schema so personas know exactly how to call it.