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What is chapterpass?

Audible's ACX has established eight technical standards that must be met, with any file that does not satisfy even one of these standards being rejected without exception. Chapterpass takes great care in preparing each chapter file to meet these requirements, ensuring that the RMS loudness falls between -23 and -18 dBFS, peak levels remain below -3 dBFS, the noise floor is kept under -60 dBFS RMS, and room tone is included at both the start and finish, all while producing a 192 kbps CBR MP3 file. Every audio file undergoes a thorough review to verify compliance with all specifications before it becomes available for download, allowing users to view precise measurements for each requirement at all checkpoints. The entire processing occurs in the user's browser through the use of WebAssembly technology, which ensures that audio files are kept on the user's device throughout the operation. Users can utilize the service without the need for an account; the first file is offered free of charge, while subsequent files incur fees of $36 per finished hour, $27 for five hours or more, and $18 for ten hours or more, all billed by the second. Furthermore, a complimentary measurement tool is available at /free-acx-check, enabling users to assess loudness, peak levels, noise floor, and silence padding in relation to the specifications without performing any mastering. Although Chapterpass specializes in mastering the essential technical standards, it does not engage in editing, noise removal, or any corrections to narration, thereby ensuring a smooth and efficient process for creators seeking to meet ACX requirements. This commitment to quality and compliance allows creators to focus on their content while trusting that their audio will meet industry standards.

What is Routebase?

Routebase acts as the ultimate guide for your APIs, enabling you to craft your OpenAPI specification through a visual interface, thus eliminating the hassle of manual YAML coding. This singular specification not only fuels your documentation portal but also supports mock servers, simplifies contract testing, and allows for monitoring systems, all derived from the initial design. Whenever you alter the contract and publish updates, Routebase actively checks for any inconsistencies before they reach your users by comparing live responses against the specification, pinpointing every difference with precise details that include missing fields, type mismatches, or unforeseen additions. You can handle specifications similarly to how you would manage code: with the ability to branch, review, and merge, while also identifying any potential breaking changes before they are deployed. The platform provides the flexibility to publish a documentation portal on a custom domain, create realistic mock environments that facilitate simultaneous frontend and backend development, and conduct contract and security tests in various settings. Moreover, each workspace is equipped with a built-in MCP server, which allows your AI agents to utilize and interact with a consistent source of truth, all while respecting your team's permission protocols—thus eliminating the necessity for intermediary code. This capability not only enhances team collaboration but also ensures that everyone remains aligned throughout the development lifecycle, thereby fostering an environment of efficiency and accuracy. Additionally, this streamlined approach allows for quicker iterations and improved responsiveness to changes in project requirements.

Media

No images available

Media

Integrations Supported

Model Context Protocol (MCP)

Integrations Supported

Model Context Protocol (MCP)

API Availability

Has API

API Availability

Has API

Pricing Information

$36 per finished hour
Free Version
Free Trial Offered?

Pricing Information

$9/month/user
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

chapterpass

Date Founded

2026

Company Location

Italy

Company Website

chapterpass.com

Company Facts

Organization Name

Routebase GmbH

Date Founded

2026

Company Location

Germany

Company Website

routebase.dev

Categories and Features

Categories and Features

API Management

API Design
API Lifecycle Management
Access Control
Analytics
Dashboard
Developer Portal
Testing Management
Threat Protection
Traffic Control
Version Control

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