Guillaume
@255kb.1kb.software
Lawyer turned web developer.
APIs, front-end, automation enthusiast.
Bootstrapping @mockoon.com, the ultimate API mocking SaaS.
APIs, front-end, automation enthusiast.
Bootstrapping @mockoon.com, the ultimate API mocking SaaS.
Reposted by Guillaume
We'll be participating in a session dedicated to funding and sustaining open-source projects at FOSDEM, alongside DuckDB and WeasyPrint.
Proud to represent Mockoon and contribute to the conversation around building sustainable, independent open-source software.
➡️ www.linkedin.com/events/74149...
Proud to represent Mockoon and contribute to the conversation around building sustainable, independent open-source software.
➡️ www.linkedin.com/events/74149...
January 9, 2026 at 2:28 PM
We'll be participating in a session dedicated to funding and sustaining open-source projects at FOSDEM, alongside DuckDB and WeasyPrint.
Proud to represent Mockoon and contribute to the conversation around building sustainable, independent open-source software.
➡️ www.linkedin.com/events/74149...
Proud to represent Mockoon and contribute to the conversation around building sustainable, independent open-source software.
➡️ www.linkedin.com/events/74149...
Reposted by Guillaume
🎉 Happy new year!
As we wrap up 2025 and head into Mockoon's ninth year, we wanted to pause and say thank you to everyone who uses Mockoon, gives feedback, reports issues, contributes, or supports the project. That's what makes it sustainable.
Looking forward to what we'll build together in 2026 🚀
As we wrap up 2025 and head into Mockoon's ninth year, we wanted to pause and say thank you to everyone who uses Mockoon, gives feedback, reports issues, contributes, or supports the project. That's what makes it sustainable.
Looking forward to what we'll build together in 2026 🚀
Mockoon - 2025 retrospective and Mockoon 8th birthday
Let's take a look back at 2025 and celebrate 8 years of Mockoon!
mockoon.com
January 9, 2026 at 2:34 PM
🎉 Happy new year!
As we wrap up 2025 and head into Mockoon's ninth year, we wanted to pause and say thank you to everyone who uses Mockoon, gives feedback, reports issues, contributes, or supports the project. That's what makes it sustainable.
Looking forward to what we'll build together in 2026 🚀
As we wrap up 2025 and head into Mockoon's ninth year, we wanted to pause and say thank you to everyone who uses Mockoon, gives feedback, reports issues, contributes, or supports the project. That's what makes it sustainable.
Looking forward to what we'll build together in 2026 🚀
Just pushed a nicer OpenAPI workflow in Mockoon's web app. Import from URL/file/clipboard with a preview, export in JSON/YAML… feels much smoother now.
OpenAPI in Mockoon just got a proper upgrade.
The web app now supports import from file/URL/clipboard with a preview, plus export to JSON or YAML.
Desktop and web now share the same engine too.
The web app now supports import from file/URL/clipboard with a preview, plus export to JSON or YAML.
Desktop and web now share the same engine too.
November 21, 2025 at 2:05 PM
Just pushed a nicer OpenAPI workflow in Mockoon's web app. Import from URL/file/clipboard with a preview, export in JSON/YAML… feels much smoother now.
Reposted by Guillaume
Simulate real-world rate limits in your mock APIs 🛡️
Learn how to use Mockoon's custom templates & rules to enforce quotas and limits:
👉 mockoon.com/tutorials/im...
Learn how to use Mockoon's custom templates & rules to enforce quotas and limits:
👉 mockoon.com/tutorials/im...
Mockoon - Implement rate limiting with custom templates and rules
Learn how to implement rate limiting in your Mockoon APIs using custom templates and rules to control request frequency and protect your endpoints
mockoon.com
October 10, 2025 at 9:05 AM
Simulate real-world rate limits in your mock APIs 🛡️
Learn how to use Mockoon's custom templates & rules to enforce quotas and limits:
👉 mockoon.com/tutorials/im...
Learn how to use Mockoon's custom templates & rules to enforce quotas and limits:
👉 mockoon.com/tutorials/im...
Reposted by Guillaume
Small but useful improvement in Mockoon v9.3.0, you can now switch the request logs to show full timestamps instead of relative times (“2 minutes ago”).
Perfect for debugging or when you need precise request tracking
Check out all the improvements in the release notes: mockoon.com/releases/9.3...
Perfect for debugging or when you need precise request tracking
Check out all the improvements in the release notes: mockoon.com/releases/9.3...
October 7, 2025 at 8:05 AM
Small but useful improvement in Mockoon v9.3.0, you can now switch the request logs to show full timestamps instead of relative times (“2 minutes ago”).
Perfect for debugging or when you need precise request tracking
Check out all the improvements in the release notes: mockoon.com/releases/9.3...
Perfect for debugging or when you need precise request tracking
Check out all the improvements in the release notes: mockoon.com/releases/9.3...
Going live today on @github.com's Open Source Friday to talk about Mockoon! 🎉
Learn how @mockoon.com makes API mocking fast, easy, and local, and hear about the journey of building an open-source project.
🎥 www.youtube.com/watch?v=H_bF...
📢 www.linkedin.com/events/73759...
Learn how @mockoon.com makes API mocking fast, easy, and local, and hear about the journey of building an open-source project.
🎥 www.youtube.com/watch?v=H_bF...
📢 www.linkedin.com/events/73759...
September 26, 2025 at 1:36 PM
Going live today on @github.com's Open Source Friday to talk about Mockoon! 🎉
Learn how @mockoon.com makes API mocking fast, easy, and local, and hear about the journey of building an open-source project.
🎥 www.youtube.com/watch?v=H_bF...
📢 www.linkedin.com/events/73759...
Learn how @mockoon.com makes API mocking fast, easy, and local, and hear about the journey of building an open-source project.
🎥 www.youtube.com/watch?v=H_bF...
📢 www.linkedin.com/events/73759...
We just added JMESPath support with an online playground, making complex JSON transformations in your mocks much easier.
Thrilled to see how the community will use it!
Thrilled to see how the community will use it!
Mockoon 9.3.0 adds JMESPath support!
Use the new {{jmesPath}} helper to transform & query JSON in your mock responses.
Now with an online playground to test your syntax.
📝 Release notes: mockoon.com/releases/9.3...
🛝 Online playground: mockoon.com/tools/jmes-p...
Use the new {{jmesPath}} helper to transform & query JSON in your mock responses.
Now with an online playground to test your syntax.
📝 Release notes: mockoon.com/releases/9.3...
🛝 Online playground: mockoon.com/tools/jmes-p...
September 24, 2025 at 1:28 PM
We just added JMESPath support with an online playground, making complex JSON transformations in your mocks much easier.
Thrilled to see how the community will use it!
Thrilled to see how the community will use it!
Thrilled to join @github.com on Open Source Friday to talk about Mockoon’s story and open-source sustainability.
Come hang out 👇
Come hang out 👇
🚀 Exciting news! Mockoon will be featured on @github.com’s Open Source Friday stream.
We’ll chat about API mocking, sustainability, and the journey of building Mockoon from scratch.
🔗 Join us on LinkedIn: www.linkedin.com/events/73759...
We’ll chat about API mocking, sustainability, and the journey of building Mockoon from scratch.
🔗 Join us on LinkedIn: www.linkedin.com/events/73759...
September 23, 2025 at 6:47 AM
Thrilled to join @github.com on Open Source Friday to talk about Mockoon’s story and open-source sustainability.
Come hang out 👇
Come hang out 👇
Reposted by Guillaume
🚀 New in Mockoon v9.3.0: 3 powerful templating helpers for object manipulation — objectPath, jsonPath, and jmesPath. Perfect for simulating complex APIs.
More info 👉 mockoon.com/releases/9.3...
More info 👉 mockoon.com/releases/9.3...
September 12, 2025 at 12:49 PM
🚀 New in Mockoon v9.3.0: 3 powerful templating helpers for object manipulation — objectPath, jsonPath, and jmesPath. Perfect for simulating complex APIs.
More info 👉 mockoon.com/releases/9.3...
More info 👉 mockoon.com/releases/9.3...
Reposted by Guillaume
Mockoon is now on OpenPledge! 🎉
Support the project by pledging to the issues & features you care about most. A new step toward sustainable open source 💙
More on our blog: mockoon.com/blog/support...
Check out OpenPledge: openpledge.io
Support the project by pledging to the issues & features you care about most. A new step toward sustainable open source 💙
More on our blog: mockoon.com/blog/support...
Check out OpenPledge: openpledge.io
Mockoon - Support Mockoon development with OpenPledge
Mockoon partners with OpenPledge to create sustainable funding opportunities and support the long-term development of our open-source API mocking tool.
mockoon.com
September 10, 2025 at 11:23 AM
Mockoon is now on OpenPledge! 🎉
Support the project by pledging to the issues & features you care about most. A new step toward sustainable open source 💙
More on our blog: mockoon.com/blog/support...
Check out OpenPledge: openpledge.io
Support the project by pledging to the issues & features you care about most. A new step toward sustainable open source 💙
More on our blog: mockoon.com/blog/support...
Check out OpenPledge: openpledge.io
Reposted by Guillaume
🚀 New in Mockoon v9.3.0:
✅ validate command to check mock files
🔄 --watch flag to auto-restart servers
Perfect for faster dev loops + CI/CD!
Release notes 👉 mockoon.com/releases/9.3...
✅ validate command to check mock files
🔄 --watch flag to auto-restart servers
Perfect for faster dev loops + CI/CD!
Release notes 👉 mockoon.com/releases/9.3...
Mockoon - Mockoon release v9.3.0
Discover Mockoon applications new v9.3.0 release with a new web application, CLI files watching, new templating helpers, and more.
mockoon.com
August 26, 2025 at 8:50 AM
🚀 New in Mockoon v9.3.0:
✅ validate command to check mock files
🔄 --watch flag to auto-restart servers
Perfect for faster dev loops + CI/CD!
Release notes 👉 mockoon.com/releases/9.3...
✅ validate command to check mock files
🔄 --watch flag to auto-restart servers
Perfect for faster dev loops + CI/CD!
Release notes 👉 mockoon.com/releases/9.3...
New round of updates just dropped for @mockoon.com Cloud: support roles, in-app help, and soon, EU deployment!
We’ve been shipping improvements to Mockoon Cloud:
✔️ New Billing and Admin roles (no seat cost)
✔️ In-app feedback + support
🕓 EU region coming soon for low-latency deployments
Always getting better!
✔️ New Billing and Admin roles (no seat cost)
✔️ In-app feedback + support
🕓 EU region coming soon for low-latency deployments
Always getting better!
July 30, 2025 at 2:24 PM
New round of updates just dropped for @mockoon.com Cloud: support roles, in-app help, and soon, EU deployment!
Really happy with the improvements we introduced in v9.3.0.
A great step toward making the Mockoon Cloud and desktop experience more seamless!
A great step toward making the Mockoon Cloud and desktop experience more seamless!
Mockoon v9.3.0 is out!
We improved how local and remote mock server statuses are displayed.
A small step in making our transition from desktop to cloud smoother ⚙️🌥️
Try it: mockoon.com/releases/9.3...
#opensource #api #devtools
We improved how local and remote mock server statuses are displayed.
A small step in making our transition from desktop to cloud smoother ⚙️🌥️
Try it: mockoon.com/releases/9.3...
#opensource #api #devtools
July 25, 2025 at 1:28 PM
Really happy with the improvements we introduced in v9.3.0.
A great step toward making the Mockoon Cloud and desktop experience more seamless!
A great step toward making the Mockoon Cloud and desktop experience more seamless!
Still riding the high from @wearedevelopers.bsky.social 2025!
Huge thanks to @github.com and the team @alacolombiadev.bsky.social @leereilly.bsky.social @lws.io for the invite to the Open Source Spotlight 🙌
It was a blast demoing @mockoon.com and sharing the booth with these awesome projects:
Huge thanks to @github.com and the team @alacolombiadev.bsky.social @leereilly.bsky.social @lws.io for the invite to the Open Source Spotlight 🙌
It was a blast demoing @mockoon.com and sharing the booth with these awesome projects:
July 16, 2025 at 8:36 AM
Still riding the high from @wearedevelopers.bsky.social 2025!
Huge thanks to @github.com and the team @alacolombiadev.bsky.social @leereilly.bsky.social @lws.io for the invite to the Open Source Spotlight 🙌
It was a blast demoing @mockoon.com and sharing the booth with these awesome projects:
Huge thanks to @github.com and the team @alacolombiadev.bsky.social @leereilly.bsky.social @lws.io for the invite to the Open Source Spotlight 🙌
It was a blast demoing @mockoon.com and sharing the booth with these awesome projects:
@wearedevelopers.bsky.social 2025 was wild!
💬 Great chats
🤯 Met @johnromero.bsky.social
🎮 Giant stylus
🗣️ Lost my voice doing demos
Wrapped up with a GitHub OSS Friday session!
📖 Recap: mockoon.com/blog/mockoon...
#Mockoon #WeAreDevelopers #DevTools
💬 Great chats
🤯 Met @johnromero.bsky.social
🎮 Giant stylus
🗣️ Lost my voice doing demos
Wrapped up with a GitHub OSS Friday session!
📖 Recap: mockoon.com/blog/mockoon...
#Mockoon #WeAreDevelopers #DevTools
July 14, 2025 at 1:57 PM
@wearedevelopers.bsky.social 2025 was wild!
💬 Great chats
🤯 Met @johnromero.bsky.social
🎮 Giant stylus
🗣️ Lost my voice doing demos
Wrapped up with a GitHub OSS Friday session!
📖 Recap: mockoon.com/blog/mockoon...
#Mockoon #WeAreDevelopers #DevTools
💬 Great chats
🤯 Met @johnromero.bsky.social
🎮 Giant stylus
🗣️ Lost my voice doing demos
Wrapped up with a GitHub OSS Friday session!
📖 Recap: mockoon.com/blog/mockoon...
#Mockoon #WeAreDevelopers #DevTools
Wrapping up two amazing days at @wearedevelopers.bsky.social!
Tons of demos, great dev chats, and yes, I lost my voice 😅
We closed it out with an Open Source Friday session with @alacolombiadev.bsky.social
Check it out:
🔗 www.youtube.com/live/J2FQVBm...
#Mockoon #WeAreDevelopers #OSSFriday
Tons of demos, great dev chats, and yes, I lost my voice 😅
We closed it out with an Open Source Friday session with @alacolombiadev.bsky.social
Check it out:
🔗 www.youtube.com/live/J2FQVBm...
#Mockoon #WeAreDevelopers #OSSFriday
July 11, 2025 at 3:53 PM
Wrapping up two amazing days at @wearedevelopers.bsky.social!
Tons of demos, great dev chats, and yes, I lost my voice 😅
We closed it out with an Open Source Friday session with @alacolombiadev.bsky.social
Check it out:
🔗 www.youtube.com/live/J2FQVBm...
#Mockoon #WeAreDevelopers #OSSFriday
Tons of demos, great dev chats, and yes, I lost my voice 😅
We closed it out with an Open Source Friday session with @alacolombiadev.bsky.social
Check it out:
🔗 www.youtube.com/live/J2FQVBm...
#Mockoon #WeAreDevelopers #OSSFriday
Last day at @wearedevelopers.bsky.social — and the @mockoon.com booth is still buzzing! 🚀
If you haven’t stopped by yet, there’s still time to chat, grab some stickers, and see Mockoon in action.
📍 @github.com booth (2_59)
Let’s wrap this up strong!
#Mockoon #WeAreDevelopers #DevTools #API
If you haven’t stopped by yet, there’s still time to chat, grab some stickers, and see Mockoon in action.
📍 @github.com booth (2_59)
Let’s wrap this up strong!
#Mockoon #WeAreDevelopers #DevTools #API
July 11, 2025 at 11:32 AM
Last day at @wearedevelopers.bsky.social — and the @mockoon.com booth is still buzzing! 🚀
If you haven’t stopped by yet, there’s still time to chat, grab some stickers, and see Mockoon in action.
📍 @github.com booth (2_59)
Let’s wrap this up strong!
#Mockoon #WeAreDevelopers #DevTools #API
If you haven’t stopped by yet, there’s still time to chat, grab some stickers, and see Mockoon in action.
📍 @github.com booth (2_59)
Let’s wrap this up strong!
#Mockoon #WeAreDevelopers #DevTools #API
Day 2 at @WeAreDevelopers! Booth is ready!
Yesterday was packed with amazing conversations, demos, and sweet API chats.
If you haven’t stopped by yet, come find me at the GitHub booth (2_59)
Let’s talk mocking, testing, or just trade stickers and pins!
#Mockoon #WeAreDevelopers #DevTools #APIMocking
Yesterday was packed with amazing conversations, demos, and sweet API chats.
If you haven’t stopped by yet, come find me at the GitHub booth (2_59)
Let’s talk mocking, testing, or just trade stickers and pins!
#Mockoon #WeAreDevelopers #DevTools #APIMocking
July 11, 2025 at 6:50 AM
Day 2 at @WeAreDevelopers! Booth is ready!
Yesterday was packed with amazing conversations, demos, and sweet API chats.
If you haven’t stopped by yet, come find me at the GitHub booth (2_59)
Let’s talk mocking, testing, or just trade stickers and pins!
#Mockoon #WeAreDevelopers #DevTools #APIMocking
Yesterday was packed with amazing conversations, demos, and sweet API chats.
If you haven’t stopped by yet, come find me at the GitHub booth (2_59)
Let’s talk mocking, testing, or just trade stickers and pins!
#Mockoon #WeAreDevelopers #DevTools #APIMocking
Day 1 wrapped!
56 demos, 89 stickers, 37 pins, 23 sweets 🍬
Thanks to everyone who came by the @mockoon.com booth.
We'll be back at it tomorrow at the @github.com booth (2_59). Come say hi if you haven’t yet! 🚀
#Mockoon #WeAreDevelopers #DevTools
56 demos, 89 stickers, 37 pins, 23 sweets 🍬
Thanks to everyone who came by the @mockoon.com booth.
We'll be back at it tomorrow at the @github.com booth (2_59). Come say hi if you haven’t yet! 🚀
#Mockoon #WeAreDevelopers #DevTools
July 10, 2025 at 5:15 PM
Day 1 wrapped!
56 demos, 89 stickers, 37 pins, 23 sweets 🍬
Thanks to everyone who came by the @mockoon.com booth.
We'll be back at it tomorrow at the @github.com booth (2_59). Come say hi if you haven’t yet! 🚀
#Mockoon #WeAreDevelopers #DevTools
56 demos, 89 stickers, 37 pins, 23 sweets 🍬
Thanks to everyone who came by the @mockoon.com booth.
We'll be back at it tomorrow at the @github.com booth (2_59). Come say hi if you haven’t yet! 🚀
#Mockoon #WeAreDevelopers #DevTools
Lunch rush is on at @wearedevelopers.bsky.social — and so is the @mockoon.com booth! 🍽️💻
Lots of great chats about mocking APIs, testing setups, and speeding up dev workflows.
Come say hi at the @github.com booth (2_59) and enter our Cloud raffle! 🚀
#Mockoon #WeAreDevelopers #DevTools #API
Lots of great chats about mocking APIs, testing setups, and speeding up dev workflows.
Come say hi at the @github.com booth (2_59) and enter our Cloud raffle! 🚀
#Mockoon #WeAreDevelopers #DevTools #API
July 10, 2025 at 11:44 AM
Lunch rush is on at @wearedevelopers.bsky.social — and so is the @mockoon.com booth! 🍽️💻
Lots of great chats about mocking APIs, testing setups, and speeding up dev workflows.
Come say hi at the @github.com booth (2_59) and enter our Cloud raffle! 🚀
#Mockoon #WeAreDevelopers #DevTools #API
Lots of great chats about mocking APIs, testing setups, and speeding up dev workflows.
Come say hi at the @github.com booth (2_59) and enter our Cloud raffle! 🚀
#Mockoon #WeAreDevelopers #DevTools #API
Booth’s ready! 🎉
Come see @mockoon.com in action at @wearedevelopers.bsky.social — we’re at the @github.com booth (2_59, Level 2).
Live demos, stickers, and a chance to win free Cloud accounts!
Let’s chat about API mocking and QA 🚀
Come see @mockoon.com in action at @wearedevelopers.bsky.social — we’re at the @github.com booth (2_59, Level 2).
Live demos, stickers, and a chance to win free Cloud accounts!
Let’s chat about API mocking and QA 🚀
July 10, 2025 at 8:08 AM
Booth’s ready! 🎉
Come see @mockoon.com in action at @wearedevelopers.bsky.social — we’re at the @github.com booth (2_59, Level 2).
Live demos, stickers, and a chance to win free Cloud accounts!
Let’s chat about API mocking and QA 🚀
Come see @mockoon.com in action at @wearedevelopers.bsky.social — we’re at the @github.com booth (2_59, Level 2).
Live demos, stickers, and a chance to win free Cloud accounts!
Let’s chat about API mocking and QA 🚀
Day 2 - Calm before the storm 😌
The booths are quiet, coffee's brewing, and we're getting ready for another round of great dev chats at @wearedevelopers.bsky.social
See you soon at the @github.com booth (2_59)!
#WeAreDevelopers #DevTools #API #QA
The booths are quiet, coffee's brewing, and we're getting ready for another round of great dev chats at @wearedevelopers.bsky.social
See you soon at the @github.com booth (2_59)!
#WeAreDevelopers #DevTools #API #QA
July 10, 2025 at 6:04 AM
Day 2 - Calm before the storm 😌
The booths are quiet, coffee's brewing, and we're getting ready for another round of great dev chats at @wearedevelopers.bsky.social
See you soon at the @github.com booth (2_59)!
#WeAreDevelopers #DevTools #API #QA
The booths are quiet, coffee's brewing, and we're getting ready for another round of great dev chats at @wearedevelopers.bsky.social
See you soon at the @github.com booth (2_59)!
#WeAreDevelopers #DevTools #API #QA
Made it to @wearedevelopers.bsky.social ! 🎉
I’m at the venue, all set up and ready to talk API mocking, testing, and whatever else you want to throw my way.
Come find me at the @github.com booth (2_59), grab some stickers, and let’s chat!
#WeAreDevelopers #DevTools
I’m at the venue, all set up and ready to talk API mocking, testing, and whatever else you want to throw my way.
Come find me at the @github.com booth (2_59), grab some stickers, and let’s chat!
#WeAreDevelopers #DevTools
July 9, 2025 at 11:13 AM
Made it to @wearedevelopers.bsky.social ! 🎉
I’m at the venue, all set up and ready to talk API mocking, testing, and whatever else you want to throw my way.
Come find me at the @github.com booth (2_59), grab some stickers, and let’s chat!
#WeAreDevelopers #DevTools
I’m at the venue, all set up and ready to talk API mocking, testing, and whatever else you want to throw my way.
Come find me at the @github.com booth (2_59), grab some stickers, and let’s chat!
#WeAreDevelopers #DevTools
Off to @wearedevelopers.bsky.social !
Looking forward to two days of demos, dev chats, and all things @mockoon.com at the @github.com booth.
See you there!
#DevTools #WeAreDeveloperd
Looking forward to two days of demos, dev chats, and all things @mockoon.com at the @github.com booth.
See you there!
#DevTools #WeAreDeveloperd
July 8, 2025 at 4:27 PM
Off to @wearedevelopers.bsky.social !
Looking forward to two days of demos, dev chats, and all things @mockoon.com at the @github.com booth.
See you there!
#DevTools #WeAreDeveloperd
Looking forward to two days of demos, dev chats, and all things @mockoon.com at the @github.com booth.
See you there!
#DevTools #WeAreDeveloperd