2021年1月法人成りして6期目 Web&ソフトウェア開発(#go #ruby 等)、#AWS の設計・構築、Tech PdM、EM支援、等々案件のご相談お待ちしております。 代表坂本について: https://xitter.cf/t.co/ohTAowHcsT

東京都中央区
Joined January 2021
Fuminori Sakamoto / 合同会社Practa retweeted
PHPの脆弱性情報公開からメンテナンスを明けるまでの約30分間どのように対応したのか記事にまとめてもらいました。是非ご覧いただけるとうれしいです!! PHP 8.5.12の緊急リリースに pixivはどう対応したか inside.pixiv.blog/2026/10/22… #pixiv_inside
2
226
15
621
75,946
Fuminori Sakamoto / 合同会社Practa retweeted
Now you can co-create Slide Decks & Video Overviews to make sure you're getting *exactly* what you want. Here's how it works: —Select a suggested focus topic from your sources (or type your own) —Select the format, length, language, and visual style —Review and edit the slide outline or video producer notes —Generate, voila! Available to all Pro and Ultra subscribers, try it out and let us know what you think!
51
152
57
1,245
107,975
Fuminori Sakamoto / 合同会社Practa retweeted
OpenAI Newsroom
@OpenAINewsroomOct 13
We discovered a sophisticated recording device that was hidden inside one of our offices. We used our models to understand the device and where it had come from, identifying that a specific employee had planted it a few days earlier. We referred the matter to the FBI, and we’re grateful to the agents and prosecutors who moved quickly to make an arrest. The FBI’s investigation is ongoing and we will continue to support their work. At this time, we have no indications of this individual inappropriately accessing or exfiltrating model weights, source code, or customer data. The employee was terminated. We take protecting our technology, data, and people seriously, and as a matter of national importance. Our security program is designed to protect against a wide range of threat actors, from insider risks to cybercriminals to nation states, and this case is an example of how AI can help address these sophisticated security threats.
4,161
6,087
5,729
77,591
26,082,749
Fuminori Sakamoto / 合同会社Practa retweeted
Today we're launching the Agents API, a brand new way to build Agents in the cloud, backed by the Codex harness. Bring along all your favorite tools and connectors, connect it to any sandbox, and let Astra cook. Can't wait to see what you whip up 👨‍🍳 openai.com/index/introducing…
154
279
100
2,834
2,015,274
Fuminori Sakamoto / 合同会社Practa retweeted
I resigned from Anthropic today. I spent the last three years doing pretraining research at both OpenAI and Anthropic. Neither company is acting responsibly. They are racing straight to self-improving superintelligence and gambling with our lives. More thoughts below.
20,513
167,153
39,440
801,162
175,339,487
Fuminori Sakamoto / 合同会社Practa retweeted
Tailscale without Tailscale, by Tailscale. Meet tailcat. tailcat is an open-source Go package and CLI that lets you use Tailscale’s data plane without the control plane. No accounts, logins, admins, or IPs to manage. Learn more → buff.ly/MBqj8sF
102
526
116
6,116
734,623
Fuminori Sakamoto / 合同会社Practa retweeted
Michael Truell
@mntruellAug 29
We’re sorry to see that OpenAI put out a note saying they plan to block Cursor users from accessing OpenAI models in three months. OpenAI models serve about 5% of Cursor user traffic, and we’re speaking with the OpenAI team to resolve this. Cursor was one of the very first users of OpenAI, we’ve worked closely with their team for years, and we’ve trusted their platform to be neutral infrastructure for our business.
1,431
994
1,015
23,994
6,136,992
Fuminori Sakamoto / 合同会社Practa retweeted
OpenAI
@OpenAIAug 29
We’re ending our partnership with Cursor following its acquisition by SpaceX. Under our proposal, Cursor’s direct access to our models would end on November 12. We know that the people most affected by this decision are the developers who rely on OpenAI models in Cursor. We care about their experience in this transition and we’re ready to go above and beyond to support them. openai.com/index/our-decisio…
3,204
2,313
3,584
22,273
16,000,887
Fuminori Sakamoto / 合同会社Practa retweeted
Cursor
@cursor_aiAug 17
Origin, our code hosting platform, is now live. It's fast, easy to use, and deeply integrated with Cursor. Get started by syncing your repos from GitHub.
1,508
2,364
2,814
25,335
26,323,189
Fuminori Sakamoto / 合同会社Practa retweeted
When an agent exceeds its intended scope, who is accountable? How do you audit a chain of sub-agents? Docker, @snyksec, and @KeycardAI built Agent Baseline to answer those questions. Open source, vendor agnostic. Read more: bit.ly/4i6WLFE
6
16
1
89
16,087
Fuminori Sakamoto / 合同会社Practa retweeted
ClaudeDevs
@ClaudeDevsAug 7
Starting August 14, auto mode will be the default permission mode in Claude Code for Pro, Max, and Team users. Auto mode reviews shell commands and actions with a separate classifier. In testing, it caught 89% of dangerous commands. Manual approval caught 14%.
543
744
399
15,185
4,124,924
Fuminori Sakamoto / 合同会社Practa retweeted
Replying to @ori_pomerantz
I’m significantly older than you. I started coding in the late 60s. My current strategy is to not read any of the code written by my agents. That’s the only way I can take advantage of their productivity. What I do instead is to surround the agents with extreme constraints. Unit tests, gherkin tests, QA procedures, quality metrics, mutation testing, test coverage, and a plethora of others. In the end, I have very high confidence in the code they produce because they’ve had to run the gauntlet of all of my constraints and tests.
570
1,969
896
18,869
5,133,457
Fuminori Sakamoto / 合同会社Practa retweeted
OpenAI Developers
@OpenAIDevsJul 9
We’re bringing Codex and ChatGPT together in one desktop app. The same powerful coding agent, now alongside ChatGPT Work, with new coding workflows, a new Chrome extension, revamped in-app browser, and faster Computer Use powered by GPT-5.6. xitter.cf/OpenAI/status/20752742…
OpenAI
@OpenAIJul 9
Introducing ChatGPT Work, a new agent in ChatGPT powered by Codex and GPT-5.6. It can take action across your apps and files, stay with a project for hours if needed, and turn a goal into finished work. It’s a whole new way to get work done.
274
328
135
3,520
727,880
Fuminori Sakamoto / 合同会社Practa retweeted
We’ve received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5. We'll begin restoring access tomorrow, and will share an update soon. We’re grateful to our users for their patience, and to everyone who worked with us on redeploying the models.
3,999
12,631
7,034
83,701
15,183,731
Fuminori Sakamoto / 合同会社Practa retweeted
Introducing Claude Sonnet 5, our most agentic Sonnet yet. It makes plans, uses tools like browsers and terminals, and runs autonomously at a level that just a few months ago required larger and more expensive models.
1,989
4,339
2,415
41,494
11,909,832
Fuminori Sakamoto / 合同会社Practa retweeted
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
12,180
25,083
28,881
86,784
93,493,101
Fuminori Sakamoto / 合同会社Practa retweeted
Introducing a more powerful NotebookLM 🚀 Massive upgrades deliver agentic capabilities in chat, more advanced reasoning, and a suite of new output formats. Tackling complex, multi-step research problems has never been easier. Rolling out now to Google AI Ultra subscribers.
217
525
160
4,329
902,956
Fuminori Sakamoto / 合同会社Practa retweeted
Thariq
@trq212Jun 1
been asking others at Anthropic how they stay in the loop with Claude and fully understand the work being done this is one of my favorites from Suzanne:
210
673
114
10,420
1,399,793