aid: synthflow
name: Synthflow
description: >-
  Synthflow is an enterprise-ready no-code Voice AI platform for automating
  phone conversations at scale. The product combines a visual agent designer
  with in-house telephony, sub-100ms latency, and a 99.99% uptime guarantee,
  so businesses can build, deploy, and operate voice agents without
  third-party carriers. Synthflow exposes a REST Platform API for assistants,
  calls, phone numbers, knowledge bases, and custom actions, with bearer
  token authentication. The platform claims more than 200 integrations
  including HubSpot, Salesforce, Cal.com, Zapier, and CCaaS systems, plus
  custom webhook actions. Compliance covers SOC 2, HIPAA, PCI DSS, and GDPR
  with end-to-end encryption and audit logging.
type: Index
position: Provider
access: 3rd-Party
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - Voice
  - Voice Agents
  - No-Code
  - Telephony
  - Phone
  - Outbound
  - Inbound
  - CRM
  - Webhooks
  - Custom Actions
  - HIPAA
  - SOC 2
url: https://raw.githubusercontent.com/api-evangelist/synthflow/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.20'
apis:
  - aid: synthflow:platform-api
    name: Synthflow Platform API
    description: >-
      The Synthflow Platform API provides REST endpoints to manage assistants,
      phone numbers, calls, knowledge bases, and custom actions for no-code
      voice AI agents. Authentication is via bearer tokens and the API is
      available in multiple regions.
    humanURL: https://docs.synthflow.ai
    baseURL: https://api.synthflow.ai
    tags:
      - Assistants
      - Calls
      - Phone Numbers
      - Knowledge Bases
      - Actions
      - REST
    properties:
      - type: Documentation
        url: https://docs.synthflow.ai
      - type: GettingStarted
        url: https://docs.synthflow.ai/getting-started-with-your-api
      - type: SignUp
        url: https://app.synthflow.ai
      - type: APIReference
        url: https://synthflow.readme.io/reference/getting-started-with-your-api
      - type: Pricing
        url: https://synthflow.ai/pricing
      - type: Authentication
        url: https://docs.synthflow.ai/getting-started-with-your-api
    features:
      - name: Assistants Management
        description: Create, configure, and manage AI voice assistants via API.
      - name: Inbound and Outbound Calls
        description: Manage inbound call routing and trigger outbound calls programmatically.
      - name: Phone Number Provisioning
        description: Provision and manage phone numbers across regions.
      - name: Knowledge Bases
        description: Create knowledge bases that ground agent responses in your content.
      - name: Custom Actions
        description: Define webhook-based custom actions that agents can call during conversations.
      - name: In-House Telephony
        description: Native telephony stack with sub-100ms latency and 99.99% uptime.
      - name: Multi-Region Deployment
        description: Deploy assistants in the region that fits your workload and compliance needs.
      - name: Compliance
        description: SOC 2, HIPAA, PCI DSS, and GDPR with end-to-end encryption and audit logs.
    useCases:
      - name: Inbound Call Automation
        description: Automate inbound support, reception, and qualification calls.
      - name: Outbound Campaigns
        description: Run outbound calling campaigns for sales, surveys, and reminders.
      - name: Appointment Setting
        description: Book and confirm appointments with calendar integrations.
      - name: Lead Qualification
        description: Qualify and route leads to sales reps with CRM updates.
      - name: Healthcare Workflows
        description: Run HIPAA-aligned voice workflows for patient outreach and intake.
    integrations:
      - name: HubSpot
      - name: Salesforce
      - name: Cal.com
      - name: Calendly
      - name: Zapier
      - name: Make
      - name: Twilio
      - name: Google Sheets
      - name: Slack
      - name: Webhooks
      - name: OpenAI
      - name: Anthropic
      - name: ElevenLabs
      - name: Cartesia
      - name: Deepgram
    authentication:
      - type: API Key
        description: HTTP Bearer authentication using an API key generated in the Synthflow dashboard.
common:
  - type: Website
    url: https://synthflow.ai
  - type: Documentation
    url: https://docs.synthflow.ai
  - type: Blog
    url: https://synthflow.ai/blog
  - type: Pricing
    url: https://synthflow.ai/pricing
  - type: TermsOfService
    url: https://synthflow.ai/terms-of-service
  - type: PrivacyPolicy
    url: https://synthflow.ai/privacy-policy
  - type: X
    url: https://x.com/synthflowai
  - type: LinkedIn
    url: https://www.linkedin.com/company/synthflowai
  - type: LLMsTxt
    url: https://docs.synthflow.ai/llms.txt
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com