Webhooks - InstaView API

Overview

Webhooks enable your application to receive real-time notifications when events occur in InstaView. Instead of polling the API, webhooks push data to your endpoint immediately when interviews complete, analyses finish, or other events happen.

How Webhooks Work

Configure Endpoint

Event Occurs

An interview completes, analysis finishes, or other tracked event happens

Receive Notification

InstaView sends an HTTP POST request to your endpoint with event details

Process & Respond

Your server processes the event and returns a 2xx status code

Event Types

InstaView supports the following webhook event types:

Interview Events
Analysis Events
System Events

Event	Description
`interview.started`	Interview session began
`interview.completed`	Interview finished with analysis available
`interview.failed`	Technical failure occurred during interview

Event	Description
`analysis.completed`	Analysis completed for a call attempt
`analysis.failed`	Analysis failed for a call attempt

Event	Description
`ping`	Test event for verifying webhook connectivity

Event Type Strings

When configuring webhooks, use these event type strings:

"analysis.completed" - Analysis finished successfully
"analysis.failed" - Analysis processing failed
"ping" - Test event for connectivity
"interview.completed" - Interview finished with analysis
"interview.failed" - Technical failure during interview
"interview.started" - Interview session began

Payload Structure

All webhook payloads follow this structure:

{
  "event": "interview.completed",
  "timestamp": "2024-01-20T14:30:00.000Z",
  "deliveryId": "550e8400-e29b-41d4-a716-446655440000",
  "data": {
    // Event-specific data
  }
}

Interview Events Payload

{
  "event": "interview.completed",
  "timestamp": "2024-01-20T14:30:00.000Z",
  "deliveryId": "550e8400-e29b-41d4-a716-446655440000",
  "data": {
    "interviewId": "interview-uuid",
    "callAttemptId": "call-attempt-uuid",
    "candidateId": "candidate-uuid",
    "jobId": "job-uuid",
    "status": "COMPLETED"
  }
}

Analysis Events Payload

Screening
Language Test
Outreach

{
  "event": "analysis.completed",
  "timestamp": "2024-01-20T14:30:00.000Z",
  "deliveryId": "550e8400-e29b-41d4-a716-446655440000",
  "data": {
    "interviewId": "interview-uuid",
    "callAttemptId": "call-attempt-uuid",
    "candidateId": "candidate-uuid",
    "jobId": "job-uuid",
    "status": "COMPLETED",
    "analysis": {
      "id": "analysis-uuid",
      "general": {
        "overallRating": 85,
        "companyFitRating": "HIGH",
        "education": "Master's degree in Computer Science",
        "experience": "5 years of experience in software development",
        "strongPoints": [
            "Excellent communication skills",
            "Strong technical expertise in React and Node.js",
            "Proven track record of leading teams"
        ],
        "weakPoints": [
            "Limited experience with microservices",
            "Needs improvement in system design"
        ],
        "evaluation": [
            "Strong candidate with relevant experience",
            "Good cultural fit for the team",
            "Recommended for next round"
        ],
        "status": "COMPLETED",
        "createdAt": "2024-01-20T14:30:00.000Z",
        "updatedAt": "2024-01-20T14:30:00.000Z"
      },
      "specific": {}
    },
    "callAttempts": [
        {
            "id": "call-attempt-uuid",
            "direction": "OUTBOUND",
            "status": "COMPLETED",
            "recordingUrl": "https://api.instaview.sk/public/recordings/uuid.mp3",
            "duration": 120,
            "calledAt": "2024-01-20T14:30:00.000Z"
        }
    ]
  }
}

{
  "event": "analysis.completed",
  "timestamp": "2024-01-20T14:30:00.000Z",
  "deliveryId": "550e8400-e29b-41d4-a716-446655440000",
  "data": {
    "interviewId": "interview-uuid",
    "callAttemptId": "call-attempt-uuid",
    "candidateId": "candidate-uuid",
    "jobId": "job-uuid",
    "status": "COMPLETED",
    "analysis": {
      "id": "analysis-uuid",
      "general": {
        "overallRating": 95,
        "status": "COMPLETED",
        "createdAt": "2024-01-20T14:30:00.000Z",
        "updatedAt": "2024-01-20T14:30:00.000Z"
      },
      "specific": {
          "pronunciationScores": {
              "accuracy": 92,
              "fluency": 88,
              "prosody": 90
          },
          "pronunciationAssessment": {
              "estimated_pronunciation_level": "C1",
              "reasoning": "Clear pronunciation with minor accent."
          },
          "grammar": {
              "level": "C1",
              "meets_tested_level": true,
              "summary": "Strong command of grammar structures."
          },
          "vocabulary": {
              "level": "C1",
              "meets_tested_level": true,
              "summary": "Wide vocabulary range used appropriately."
          },
          "overallScore": {
              "level": "C1",
              "confidence": 0.95,
              "summary": "Excellent overall language proficiency."
          },
          "combinedCefrEvaluation": {
              "final_level": "C1",
              "confidence": 0.95,
              "summary": "Candidate demonstrates C1 level proficiency."
          }
      }
    },
    "callAttempts": [
        {
            "id": "call-attempt-uuid",
            "direction": "OUTBOUND",
            "status": "COMPLETED",
            "recordingUrl": "https://api.instaview.sk/public/recordings/uuid.mp3",
            "duration": 150,
            "calledAt": "2024-01-20T14:30:00.000Z"
        }
    ]
  }
}

{
  "event": "analysis.completed",
  "timestamp": "2024-01-20T14:30:00.000Z",
  "deliveryId": "550e8400-e29b-41d4-a716-446655440000",
  "data": {
    "interviewId": "interview-uuid",
    "callAttemptId": "call-attempt-uuid",
    "candidateId": "candidate-uuid",
    "jobId": "job-uuid",
    "status": "COMPLETED",
    "analysis": {
      "id": "analysis-uuid",
      "general": {
        "status": "COMPLETED",
        "createdAt": "2024-01-20T14:30:00.000Z",
        "updatedAt": "2024-01-20T14:30:00.000Z"
      },
      "specific": {
          "interestType": "interested_now",
          "specificFeedback": "Candidate is very interested in the position and available immediately.",
          "preferredNextStep": "technical_interview"
      }
    },
    "callAttempts": [
        {
            "id": "call-attempt-uuid",
            "direction": "OUTBOUND",
            "status": "COMPLETED",
            "recordingUrl": "https://api.instaview.sk/public/recordings/uuid.mp3",
            "duration": 45,
            "calledAt": "2024-01-20T14:30:00.000Z"
        }
    ]
  }
}

Failed Event Payloads

Failed events include an error message:

{
  "event": "interview.failed",
  "timestamp": "2024-01-20T14:30:00.000Z",
  "deliveryId": "550e8400-e29b-41d4-a716-446655440000",
  "data": {
    "interviewId": "interview-uuid",
    "callAttemptId": "call-attempt-uuid",
    "candidateId": "candidate-uuid",
    "jobId": "job-uuid",
    "status": "FAILED",
    "errorMessage": "Connection timeout during call"
  }
}

Ping Event Payload

{
  "event": "ping",
  "timestamp": "2024-01-20T14:30:00.000Z",
  "deliveryId": "550e8400-e29b-41d4-a716-446655440000",
  "data": {
    "message": "Test ping from InstaView webhook system"
  }
}

Most webhook payloads contain minimal data (IDs and status), but the analysis.completed event includes the full analysis results. For other details like transcripts, use the Interview API to fetch the complete resource.

Per-Company Webhooks

For ATS integrations managing multiple companies, you can register webhooks per company by specifying the companyId parameter when creating a webhook. This enables:

Company-specific endpoints: Each company can have its own webhook URL (e.g., different subdomains)
Selective event delivery: Webhooks with companyId only receive events for that specific company
Global webhooks: Webhooks without companyId receive events for all companies accessible by the API key

Example: Per-Company Setup

// Webhook for Company A
await createWebhook({
  url: 'https://company-a.yourats.com/webhooks/instaview',
  companyId: 'company-a-uuid',
  events: ['interview.completed', 'analysis.completed']
});

// Webhook for Company B
await createWebhook({
  url: 'https://company-b.yourats.com/webhooks/instaview',
  companyId: 'company-b-uuid',
  events: ['interview.completed', 'analysis.completed']
});

// Global webhook (receives all events)
await createWebhook({
  url: 'https://admin.yourats.com/webhooks/instaview',
  // No companyId - receives events for all companies
  events: ['interview.completed', 'analysis.completed']
});

Filtering by Company

When listing webhooks, you can filter by company:

// List all webhooks (includes both company-specific and global webhooks)
const allWebhooks = await fetch('/webhooks', { headers });

// List webhooks for a specific company (excludes global webhooks)
// Only returns webhooks that have the specified companyId
const companyWebhooks = await fetch('/webhooks?companyId=company-uuid', { headers });

Note: When filtering by companyId, only company-specific webhooks are returned. Global webhooks (those without a companyId) are excluded from filtered results. To see all webhooks including global ones, omit the companyId parameter.

Required Scopes

Operation	Required Scope
List webhooks	`read:webhooks`
Get webhook by ID	`read:webhooks`
Create webhook	`write:webhooks`
Update webhook	`write:webhooks`
Delete webhook	`write:webhooks`
Test webhook	`write:webhooks`
Reset circuit breaker	`write:webhooks`

Security

Signature Verification

Every webhook request includes an HMAC-SHA256 signature in the X-Webhook-Signature header. Always verify this signature to ensure requests are from InstaView. The signature format is: sha256=<hex-encoded-signature>

const crypto = require("crypto");

function verifyWebhookSignature(payload, signature, secret) {
  const expectedSignature =
    "sha256=" +
    crypto
      .createHmac("sha256", Buffer.from(secret, "hex"))
      .update(payload, "utf8")
      .digest("hex");

  return crypto.timingSafeEqual(
    Buffer.from(signature),
    Buffer.from(expectedSignature)
  );
}

// Express.js example
app.post(
  "/webhooks/instaview",
  express.raw({ type: "application/json" }),
  (req, res) => {
    const signature = req.headers["x-webhook-signature"];
    const payload = req.body.toString();

    if (
      !verifyWebhookSignature(payload, signature, process.env.WEBHOOK_SECRET)
    ) {
      return res.status(401).send("Invalid signature");
    }

    const event = JSON.parse(payload);
    // Process the event...

    res.status(200).send("OK");
  }
);

Request Headers

Every webhook request includes these headers:

Header	Description
`Content-Type`	Always `application/json`
`X-Webhook-Signature`	HMAC-SHA256 signature for payload verification
`X-Webhook-Delivery-Id`	Unique ID for this delivery (for idempotency)
`X-Webhook-Event`	Event type (e.g., `interview.completed`)
`User-Agent`	`InstaView-Webhook/1.0`

Plus any custom headers you configured when creating the webhook.

Secret Management

Store your signing secret securely! The signing secret is only returned once when you create a webhook configuration. If lost, you must delete and recreate the webhook to get a new secret.

Best practices for secret management:

Store secrets in environment variables or a secrets manager
Never commit secrets to version control
Rotate secrets periodically by creating new webhooks
Use different secrets for development and production

Retry Logic

If your endpoint fails to respond with a 2xx status code, InstaView automatically retries delivery with exponential backoff:

Immediate Attempt

First delivery attempt immediately when event occurs

Retry 1

After a short delay if first attempt fails

Retry 2

After a longer delay if second attempt fails

Retry 3

Final attempt with maximum delay

After all retries are exhausted, the delivery is marked as failed.

Circuit Breaker

To protect both your system and ours, InstaView implements a circuit breaker pattern:

If a webhook consistently fails, it will be automatically disabled
You can monitor the consecutiveFailures count in the webhook configuration
When disabled, the circuitOpenedAt timestamp indicates when the circuit opened
Use the Reset Circuit Breaker endpoint to re-enable the webhook after fixing issues

Endpoint Requirements

Your webhook endpoint must:

Respond Quickly

Return a 2xx response within 30 seconds. For long-running tasks, acknowledge receipt immediately and process asynchronously.

app.post('/webhooks/instaview', async (req, res) => {
  // Acknowledge immediately
  res.status(200).send('OK');
  
  // Process asynchronously
  processWebhookAsync(req.body).catch(console.error);
});

Be Idempotent

Handle duplicate deliveries gracefully using the deliveryId:

// Note: Use Redis or database storage in production for multi-instance deployments
const processedDeliveries = new Set();

app.post('/webhooks/instaview', (req, res) => {
  const { deliveryId } = req.body;
  
  if (processedDeliveries.has(deliveryId)) {
    return res.status(200).send('Already processed');
  }
  
  processedDeliveries.add(deliveryId);
  // Process the event...
  
  res.status(200).send('OK');
});

Use HTTPS

Production webhook URLs must use HTTPS. HTTP is only allowed for localhost during development.

Return 2xx for Success

Any 2xx status code indicates successful receipt. Retry behavior depends on the status code:

Status	Meaning
200, 201, 202	Success - no retry
429	Rate limit - will retry
4xx (except 429)	Client error - no retry (permanent errors like 401, 404)
5xx	Server error - will retry

Managing Webhooks

Create a Webhook

const response = await fetch("https://api.instaview.sk/webhooks", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    url: "https://api.yourcompany.com/webhooks/instaview",
    name: "Production Webhook",
    description: "Receives interview completion notifications",
    events: ["interview.completed", "analysis.completed"],
    companyId: "company-uuid", // Optional: Associate with specific company
    headers: [{ name: "Authorization", value: "Bearer your-internal-token" }],
  }),
});

const { data } = await response.json();

// IMPORTANT: Store this secret securely - it's only shown once!
console.log("Signing secret:", data.signingSecret);

Per-Company Webhooks: For ATS integrations managing multiple companies, you can specify companyId when creating a webhook. This allows you to register separate webhooks per company (e.g., different subdomains). If omitted, the webhook will receive events for all companies accessible by the API key (global webhook).

List Webhooks

// List all webhooks (includes both company-specific and global webhooks)
const response = await fetch("https://api.instaview.sk/webhooks", {
  headers: { Authorization: `Bearer ${apiKey}` },
});

// Filter by company ID (returns only company-specific webhooks, excludes global ones)
const responseFiltered = await fetch(
  "https://api.instaview.sk/webhooks?companyId=company-uuid",
  {
    headers: { Authorization: `Bearer ${apiKey}` },
  }
);

const { data } = await response.json();
console.log(`Found ${data.total} webhooks`);

for (const webhook of data.data) {
  console.log(`${webhook.name}: ${webhook.url}`);
  console.log(`  Company: ${webhook.companyId || "All companies"}`);
  console.log(`  Events: ${webhook.events.join(", ")}`);
  console.log(`  Active: ${webhook.isActive}`);
  console.log(`  Failures: ${webhook.consecutiveFailures}`);
}

Update a Webhook

await fetch(`https://api.instaview.sk/webhooks/${webhookId}`, {
  method: "PATCH",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    url: "https://api.yourcompany.com/webhooks/instaview-v2",
    events: ["interview.completed", "interview.failed", "analysis.completed", "analysis.failed"],
    isActive: true,
  }),
});

Delete a Webhook

await fetch(`https://api.instaview.sk/webhooks/${webhookId}`, {
  method: "DELETE",
  headers: { Authorization: `Bearer ${apiKey}` },
});

Test a Webhook

Send a test ping to verify connectivity:

const response = await fetch(
  `https://api.instaview.sk/webhooks/${webhookId}/test`,
  {
    method: "POST",
    headers: { Authorization: `Bearer ${apiKey}` },
  }
);

const { data } = await response.json();

if (data.success) {
  console.log("Webhook test successful!");
  console.log(`Response time: ${data.durationMs}ms`);
} else {
  console.error("Webhook test failed:", data.message);
}

To test a webhook using the test endpoint above, it must be subscribed to the ping event.

Test Interview Events with Test Interviews

For more comprehensive testing of interview-related webhook events (interview.completed, analysis.completed), you can create test interviews using the isTest flag:

// Create a test interview that immediately completes
const testInterview = await fetch("https://api.instaview.sk/v1/public/interviews", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    candidateId: "candidate-uuid",
    agentId: "agent-uuid",
    isTest: true, // Creates test interview
  }),
});

// This will trigger:
// 1. interview.completed webhook
// 2. analysis.completed webhook
// Both events will be sent to your webhook endpoint

Test interviews are useful for:

Testing your webhook handler’s processing logic for interview completion
Verifying that analysis data is correctly parsed and stored
End-to-end testing of your integration without waiting for real interviews
Development and debugging without consuming billing minutes

See the Create Interview documentation for more details on test mode.

Reset Circuit Breaker

If your webhook was disabled due to consecutive failures:

await fetch(
  `https://api.instaview.sk/webhooks/${webhookId}/reset-circuit`,
  {
    method: "POST",
    headers: { Authorization: `Bearer ${apiKey}` },
  }
);

Custom Headers

You can configure custom headers to authenticate with your endpoint:

{
  "url": "https://api.yourcompany.com/webhooks/instaview",
  "headers": [
    { "name": "Authorization", "value": "Bearer your-internal-token" },
    { "name": "X-Custom-Header", "value": "custom-value" }
  ],
  "events": ["interview.completed", "analysis.completed"]
}

Security: Sensitive headers (Authorization, X-API-Key, X-Secret, API-Key) are automatically encrypted at rest. When listing webhooks, these header values are masked for security.

Best Practices

Verify Signatures

Always verify the X-Webhook-Signature header to ensure requests are authentic

Respond Fast

Return 200 immediately and process asynchronously for long-running tasks

Handle Duplicates

Use deliveryId for idempotency - you may receive the same event multiple times

Monitor Health

Check consecutiveFailures and circuitOpenedAt to catch issues early

Troubleshooting

Webhook not receiving events

Possible causes: - Webhook is not subscribed to the event type - Webhook is disabled (isActive: false) - Circuit breaker is open (check circuitOpenedAt) Solutions: - Verify event subscriptions in webhook configuration - Check if webhook is active - Reset circuit breaker if needed

Signature verification failing

Possible causes: - Using wrong signing secret - Modifying payload before verification - Encoding issues Solutions: - Verify you’re using the original signing secret - Verify the raw request body, not parsed JSON - Ensure UTF-8 encoding

Webhook disabled automatically

Cause: Too many consecutive failures triggered the circuit breaker Solutions: 1. Fix the underlying issue (endpoint availability, authentication, etc.) 2. Use the test endpoint to verify connectivity 3. Reset the circuit breaker

Missing events

Possible causes: - Event occurred before webhook was configured - Event type not in subscription list Note: Webhooks only deliver events that occur after configuration. For historical data, use the API to poll for past events.

Next Steps

Webhook Resource

Detailed webhook configuration reference

API Reference

Complete webhook API documentation

Interviews

Learn about interview events and data

Error Handling

Handle webhook delivery errors

Getting Started

Core Concepts

Resources

Advanced

​Overview

​How Webhooks Work

​Event Types

​Event Type Strings

​Payload Structure

​Interview Events Payload

​Analysis Events Payload

​Failed Event Payloads

​Ping Event Payload

​Per-Company Webhooks

​Example: Per-Company Setup

​Filtering by Company

​Required Scopes

​Security

​Signature Verification

​Request Headers

​Secret Management

​Retry Logic

​Circuit Breaker

​Endpoint Requirements

​Managing Webhooks

​Create a Webhook

​List Webhooks

​Update a Webhook

​Delete a Webhook

​Test a Webhook

​Test Interview Events with Test Interviews

​Reset Circuit Breaker

​Custom Headers

​Best Practices

Verify Signatures

Respond Fast

Handle Duplicates

Monitor Health

​Troubleshooting

​Next Steps

Webhook Resource

API Reference

Interviews

Error Handling

Overview

How Webhooks Work

Event Types

Event Type Strings

Payload Structure

Interview Events Payload

Analysis Events Payload

Failed Event Payloads

Ping Event Payload

Per-Company Webhooks

Example: Per-Company Setup

Filtering by Company

Required Scopes

Security

Signature Verification

Request Headers

Secret Management

Retry Logic

Circuit Breaker

Endpoint Requirements

Managing Webhooks

Create a Webhook

List Webhooks

Update a Webhook

Delete a Webhook

Test a Webhook

Test Interview Events with Test Interviews

Reset Circuit Breaker

Custom Headers

Best Practices

Troubleshooting

Next Steps