Synthflow

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
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/synthflow.png
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.
- aid: synthflow:synthflow-default-api
  name: Synthflow Default API
  description: The Default API from Synthflow — 49 operation(s) for default.
  humanURL: https://docs.synthflow.ai
  baseURL: https://api.synthflow.ai
  tags:
  - Default
  properties:
  - type: OpenAPI
    url: openapi/synthflow-default-api-openapi.yml
- aid: synthflow:synthflow-subpackage-chat-api
  name: Synthflow subpackage_chat API
  description: The subpackage_chat API from Synthflow — 4 operation(s) for subpackage_chat.
  humanURL: https://docs.synthflow.ai
  baseURL: https://api.synthflow.ai
  tags:
  - subpackage_chat
  properties:
  - type: OpenAPI
    url: openapi/synthflow-subpackage-chat-api-openapi.yml
- aid: synthflow:synthflow-subpackage-contacts-api
  name: Synthflow subpackage_contacts API
  description: The subpackage_contacts API from Synthflow — 2 operation(s) for subpackage_contacts.
  humanURL: https://docs.synthflow.ai
  baseURL: https://api.synthflow.ai
  tags:
  - subpackage_contacts
  properties:
  - type: OpenAPI
    url: openapi/synthflow-subpackage-contacts-api-openapi.yml
- aid: synthflow:synthflow-subpackage-mcp-api
  name: Synthflow subpackage_mcp API
  description: The subpackage_mcp API from Synthflow — 3 operation(s) for subpackage_mcp.
  humanURL: https://docs.synthflow.ai
  baseURL: https://api.synthflow.ai
  tags:
  - subpackage_mcp
  properties:
  - type: OpenAPI
    url: openapi/synthflow-subpackage-mcp-api-openapi.yml
- aid: synthflow:synthflow-subpackage-memorystores-api
  name: Synthflow subpackage_memoryStores API
  description: The subpackage_memoryStores API from Synthflow — 1 operation(s) for subpackage_memorystores.
  humanURL: https://docs.synthflow.ai
  baseURL: https://api.synthflow.ai
  tags:
  - subpackage_memoryStores
  properties:
  - type: OpenAPI
    url: openapi/synthflow-subpackage-memorystores-api-openapi.yml
- aid: synthflow:synthflow-subpackage-phonenumbers-api
  name: Synthflow subpackage_phoneNumbers API
  description: The subpackage_phoneNumbers API from Synthflow — 3 operation(s) for subpackage_phonenumbers.
  humanURL: https://docs.synthflow.ai
  baseURL: https://api.synthflow.ai
  tags:
  - subpackage_phoneNumbers
  properties:
  - type: OpenAPI
    url: openapi/synthflow-subpackage-phonenumbers-api-openapi.yml
- aid: synthflow:synthflow-subpackage-webhooklogs-api
  name: Synthflow subpackage_webhookLogs API
  description: The subpackage_webhookLogs API from Synthflow — 2 operation(s) for subpackage_webhooklogs.
  humanURL: https://docs.synthflow.ai
  baseURL: https://api.synthflow.ai
  tags:
  - subpackage_webhookLogs
  properties:
  - type: OpenAPI
    url: openapi/synthflow-subpackage-webhooklogs-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/synthflow-agentic-access.yml
- type: DomainSecurity
  url: security/synthflow-domain-security.yml
- type: Authentication
  url: authentication/synthflow-authentication.yml
- 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: LlmsText
  url: https://docs.synthflow.ai/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com