Operator by Planck ProofPlanck Proof
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About
Operator by Planck Proof is an agentic API penetration testing tool. Give it your OpenAPI spec and credentials for two or more roles; it tests every operation across roles and tenants for authorization flaws (BOLA, BFLA, BOPLA), broken authentication, injection, mass assignment and business-logic abuse, chaining findings into attack paths. Coverage maps to the OWASP API Security Top 10 and includes REST, GraphQL and gRPC APIs, plus the APIs behind AI agents, LLM apps and MCP servers.
Every finding ships with the exact request and response, a CVSS score and a runnable proof-of-concept your engineers can execute to confirm the issue and verify the fix. Scope, rate and data controls keep runs safe against real environments, and you can steer or pause the agent at any time. Run it on every deploy, retest fixes, and send findings to Jira. Reports are built for engineers and auditors (SOC 2, PCI DSS, HIPAA).
First scan is free; Pro and Enterprise are quoted per API by endpoint volume.
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About
Yaak is a fast, lightweight, and privacy-focused desktop API client designed for developers to test, debug, and interact with APIs in a clean and efficient environment without relying on cloud services. It works entirely offline, storing all data locally on the user’s machine with encrypted secrets and zero telemetry, ensuring full control over sensitive information and eliminating the need for accounts or external servers. It supports a wide range of protocols, including REST, GraphQL, gRPC, WebSockets, and Server-Sent Events, allowing developers to work with different types of APIs in a single interface. It includes features such as dynamic request templating with variables and functions, request chaining, and full debugging tools for inspecting headers, cookies, payloads, and responses. Yaak also integrates with Git by storing workspaces as plain files, enabling version control and collaboration while maintaining security through encrypted data handling.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Developers · IT/Security Professionals · Enterprise · Small Business / Startups · Information Technology
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Audience
Developers and engineering teams who need a fast, secure, and offline API client to test, debug, and manage APIs efficiently without cloud dependencies
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and VideosNo images available
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Pricing
$0
Free Version
Free Trial
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Pricing
$79 per year
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationPlanck Proof
Founded: 2026
United States
planckproof.ai
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Company InformationYaak
Founded: 2023
United States
yaak.app/
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Categories |
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Integrations
1Password
Amazon Web Services (AWS)
Bearer
Dropbox
Git
GraphQL
Insomnia
OAuth
Postman
Swagger
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Integrations
1Password
Amazon Web Services (AWS)
Bearer
Dropbox
Git
GraphQL
Insomnia
OAuth
Postman
Swagger
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