Free Webhook Platform with HMAC Signatures and EU Hosting
Stage
Established
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Founded
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Based in
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Pricing model
freemium
freemium
Pricing
Free Essentials plan for teams up to 3 users with unlimited Git Sync, cloud/local projects, and 1,000 mock server requests per month. Pro plan at $12 per user per month with unlimited users and 10,000 mock requests. Enterprise plan at $45 per user per month for full Kong Konnect integration, SSO, SC
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Key features
REST, GraphQL, gRPC, SOAP, and WebSocket API clients
Native API mocking with dynamic responses
Automated API testing at scale with pre and post-request scripting
AI-powered testing workflows and MCP server testing
Kong Konnect integration for API governance
Local, Git, and cloud storage with end-to-end encryption
Role-based access controls and enterprise SSO
Inso CLI for CI/CD automation
OpenAPI spec editor and live preview
Real-time collaboration with 3-way merge
Webhook delivery and retries
HMAC signatures and encryption
Configurable retry schedules
Delivery monitoring and logging
Subscriber portal
Embeddable branded portal
REST API and SDKs
Event filtering and scoping
What makes it different
Only API client with native Kong Konnect integration as single source of truth
AI-native platform with MCP server testing support
Flexible data storage: enforce local-only, git, cloud, or hybrid compliance
Fully open-source under SSPL-1.0 with no vendor lock-in
EU-hosted with data sovereignty and GDPR compliance