Jake Reinhold’s claudecookie.com turns three browser-oriented Claude cookie utilities—conversion, session checking, and Claude Code credential-file generation—into callable JSON endpoints that do not require an API key. That makes scripting possible, but it does not make every operation local: the project README says conversion stays in the browser, while checking and credential generation send the cookie to the service and Anthropic.
What problem does the API address?
Reinhold describes a format mismatch: “the browser stores your login as a sessionKey cookie, but Claude Code wants ~/.claude/.credentials.json.” The utility bridges those formats and provides related session tools. Its documentation also refers to sessionKeyV3.
The project offers the same three functions through an interactive website and through HTTPS JSON routes. The API is described by the developer as requiring no API key and allowing wildcard CORS, so a script can call it from a range of origins without first managing a separate API credential. This convenience does not remove the need to protect the live Claude session cookie itself.
What the three endpoints do
| Endpoint | Purpose | Documented constraints | Cookie data flow |
|---|---|---|---|
/api/v1/convert |
Convert among Netscape cookies.txt, Cookie-Editor JSON, Puppeteer format, key-value pairs, and a raw Cookie header. |
The README documents conversion of up to 40 cookie sets in one paste. The author publishes a limit of 60 requests per minute per IP, alongside the shared API limit. | The README describes conversion as staying in the browser; it is not sent to the service for conversion. |
/api/v1/check |
Check whether a session is active and show account plan and usage windows. | Up to 10 cookies in one request. The author publishes a limit of 20 requests per minute per IP, alongside the shared API limit. | The README says the pasted cookie is encrypted in the browser and then sent to the service and Anthropic. |
/api/v1/credential |
Generate the ~/.claude/.credentials.json file Claude Code reads. |
One cookie set per request. The README says Free accounts cannot mint credentials. The author publishes limits of 5 requests per minute and 20 per hour per IP, plus 3 per hour per sessionKey, alongside the shared API limit. |
The README says the cookie is encrypted in the browser and then sent to the service and Anthropic. It says the response is returned to the user and tokens are not stored on the server. |
These data-flow statements are the project’s own documentation, not an independent security audit. The source materials do not establish the implementation through independent verification.
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- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
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- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Published API limits
Jake Reinhold’s 2026 documentation publishes these limits. They are project-stated thresholds, not independently load-tested performance results.
| Scope | Published limit |
|---|---|
All /api/v1/* routes |
10 requests per second per IP, with a burst allowance of 20. |
POST /convert |
60 requests per minute per IP. |
POST /check |
20 requests per minute per IP. |
POST /credential |
5 requests per minute and 20 per hour per IP; 3 per hour per sessionKey. |
A rate-limited response carries a Retry-After header with the wait time in seconds. Limits and batch sizes can change; check the project’s current documentation before building a workflow that depends on them.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Browser interface or JSON API?
These are two ways to use the same utilities, not competing products. The browser interface suits a one-off paste-and-download task. The API is for calling the operations from scripts or other software. Choose based on automation needs and, especially for check and credential requests, whether the documented data flow is acceptable for the cookie involved.
- Use the browser interface when you want an interactive workflow and need to convert formats without sending the cookie to the service for conversion.
- Use the API when you need to integrate the documented operations into a script and can work within the published rate and batch limits.
- Do not treat the API as a local-only route for session checks or credential generation: the README says those operations transmit the cookie to the service and Anthropic.
Security and affiliation
A live session cookie can grant access to an account, so handle it as a credential. Reinhold’s warning is direct: “Treat a live session cookie like a password: only paste a session you control.” Avoid sharing it, logging it, or placing it in a script or repository where others can read it.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Reinhold says the project is not made by or endorsed by Anthropic; the repository likewise describes it as independent and not connected to Anthropic. The README says tokens are not stored on the server, but that is a project claim rather than an independently verified security finding. The available materials do not establish a broader security audit or independently confirm the live service’s current handling.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What is and is not established
The primary sources are Reinhold’s article and the project README. They document the tool’s functions, routes, limits, and stated data flow. The live site and linked OpenAPI document were not independently fetched for this coverage, so present availability and endpoint behavior are not independently confirmed. No comparative testing against other tools or performance testing is established by those sources.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
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- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
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