• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
NewslettersTerm Sheet

Stripe crypto alum raise $19.2 million to power agentic payments through ATXP protocol

Leo Schwartz
By
Leo Schwartz
Leo Schwartz
Senior Writer
Down Arrow Button Icon
September 22, 2025, 7:13 AM ET
Circuit & Chisel founders Louis Amira and David Noël-Romas.
Circuit & Chisel founders Louis Amira and David Noël-Romas.Courtesy of Circuit & Chisel

In the beginning, there was the internet. But it wasn’t very good at the features that we know and love today, like being able to visit different webpages with ease, which in turn can pull real-time information from servers. Instead, tech whizzes such as the legendary Tim Berners-Lee developed a series of protocols like HTTP that would undergird the World Wide Web, creating the simple browsing experience that we take for granted today. 

Recommended Video

Proponents of AI would argue we’re in a similar place when it comes to agents. Everyone understands the appeal—imagine if you could have AI bots scurrying around to do your bidding, from booking flights to deploying a memecoin investing strategy based on Elon Musk’s tweets. Louis Amira, the former head of crypto & AI partnerships at the fintech giant Stripe, argues that the main reason that’s not possible yet is the lack of protocols allowing agents to speak with each other, as well as the myriad sources they need to access. 

Amira and his cofounder, Stripe’s former head of crypto engineering David Noël-Romas, have raised $19.2 million for their new startup, Circuit & Chisel. Its first product is ATXP, a protocol that Amira described as the HTTP for agentic payments—and one that he hopes will maintain a more neutral stance than similar products already on the market, like Coinbase’s x402. 

AI is still firmly in its picks and shovels era, and Circuit & Chisel’s ATXP will be entering an increasingly crowded space, including Google releasing its own open-source protocol last week, in partnership with Coinbase, that will help AI applications send and receive money, including stablecoins. But aside from its Stripe pedigree (and financial backing), Circuit & Chisel also received funding from Primary Venture Partners and ParaFi, along with Coinbase Ventures, illustrating how firms that would usually be competing to create the best solution are working, at least to some degree, in tandem. (Stripe is leading its own crypto-powered payments revolution with its stablecoin blockchain Tempo, which ATXP will support.)

The technical details of exactly what ATXP will allow are too convoluted to fit in the confines of this newsletter, nor could I do them justice. But what Amira emphasized is that, if ATXP is successful, it would enable the long-awaited promised land of microtransactions. Under this scheme, agents can go out and fetch information autonomously, empowered to pay tiny amounts of money for, say, scraping information from a private LinkedIn profile or accessing a paywalled Fortune article, and those platforms in turn would be empowered to charge tiny amounts of money. This would fundamentally change how the web functions, but as Amira acknowledges, it’s a “chicken and egg” problem of both needing technology like ATXP, and convincing the web to start embracing microtransactions. 

If Circuit & Chisel pulls it off, Amira believes we’ll start to see a plethora of new AI agents, similar to the rise of iOS apps after the launch of the iPhone. He also acknowledges that, like HTTP, his own protocol won’t exactly be a moneymaker, but that his company plans to develop its own agents. It just needed the foundation first. “The models are getting better, their brains are getting smarter, but they don’t have the right tools,” Amira told me. 

ICYMI…Jessica Mathews interviewed Scott Kupor, the former managing partner at Andreessen Horowitz, who is now leading the Trump administration’s “workplace efficiency” initiative as the director of the Office of Personnel Management (or put less euphemistically, keeping the government running with 300,000 fewer employees). 

Leo Schwartz
X:
@leomschwartz
Email: leo.schwartz@fortune.com

Submit a deal for the Term Sheet newsletter here.

Joey Abrams curated the deals section of today’s newsletter. Subscribe here.

VENTURE DEALS

- Irregular, a San Francisco-based AI security lab, raised $80 million in funding. Sequoia Capital and Redpoint Ventures led the round and was joined by Swish Ventures and angel investors.

- Aleph, a New York City-based AI-powered financial planning and analysis platform, raised $29 million in Series B funding. Khosla Ventures led the round and was joined by Picus Capital, Bain Capital Ventures, and Y Combinator.

- Grvt, a Singapore-based decentralized exchange, raised $19 million in Series A funding from ZKsync, Further Ventures, EigenCloud, and 500 Global.

- Le Walk, a New York City-based AI-powered tour guide and travel partner, raised $4.1 million in seed funding. Adverb Ventures and Lerer Hippeau led the round and were joined by Origins Fund and Point72 Ventures.

PRIVATE EQUITY

- Specialty Building Products, backed by The Jordan Company, acquired OrePac Building Products, a Wilsonville, Ore.-based distributor of specialty building materials. Financial terms were not disclosed.

- Stone Point Capital and CPP Investments acquired a majority stake in OneDigital, an Atlanta, Ga.-based insurance brokerage, financial services and workforce consulting firm. Financial terms were not disclosed.

EXITS

PEOPLE

- Inspired Capital, a New York City-based venture capital firm, promoted Kamran Ali and Chris Brown to partner.

This is the web version of Term Sheet, a daily newsletter on the biggest deals and dealmakers in venture capital and private equity. Sign up for free.
About the Author
Leo Schwartz
By Leo SchwartzSenior Writer
LinkedIn iconTwitter icon

Leo Schwartz is a senior writer at Fortune covering fintech, crypto, venture capital, and financial regulation.

See full bioRight Arrow Button Icon

Latest in Newsletters

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

Latest in Newsletters

NewslettersMPW Daily
Your predictions for women, AI, and the workplace in 2026
By Emma HinchliffeDecember 24, 2025
9 days ago
Vanguard CIO Nitin Tandon.
NewslettersCIO Intelligence
How investment giant Vanguard’s CIO is placing big tech bets today to create the AI digital advisor of tomorrow
By John KellDecember 24, 2025
9 days ago
NewslettersCFO Daily
How AI is redefining finance leadership: ‘There has never been a more exciting time to be a CFO’
By Sheryl EstradaDecember 24, 2025
9 days ago
NewslettersCEO Daily
Expedia CEO Ariane Gorin on the fight to ensure AI doesn’t turn her brands into invisible pipes consumers never see
By Diane BradyDecember 24, 2025
9 days ago
NewslettersTerm Sheet
The AI startups founders and VCs say could be acquisition targets in 2026
By Allie GarfinkleDecember 24, 2025
9 days ago
Thierry Breton, former European Commissioner for the Internal Market, in Paris on June 13, 2025. (Photo: Thomas Samson/AFP/Getty Images)
NewslettersFortune Tech
U.S. denies visas for five Europeans, alleging American censorship
By Andrew NuscaDecember 24, 2025
9 days ago

Most Popular

placeholder alt text
Politics
Buddhist monks peace-walking from Texas to DC persist even after being run over on highway outside Houston
By The Associated PressDecember 30, 2025
3 days ago
placeholder alt text
Success
Melinda French Gates got her start at Microsoft because an IBM hiring manager told her to turn down its job offer—'It dumbfounded me'
By Emma BurleighDecember 31, 2025
2 days ago
placeholder alt text
Startups & Venture
Trump Mobile says its first-ever smartphone is delayed, and the government shutdown is to blame
By Dave SmithDecember 31, 2025
2 days ago
placeholder alt text
Success
Marriott’s CEO spoke out about DEI. The next day, he had 40,000 emails from his associates
By Ashley LutzJanuary 1, 2026
16 hours ago
placeholder alt text
Health
Lay's drastically rebrands after disturbing finding: 42% of consumers didn't know their chips were made out of potatoes
By Matty Merritt and Morning BrewDecember 31, 2025
2 days ago
placeholder alt text
C-Suite
Exiting CEO left each employee at his family-owned company a $443,000 gift—but they have to stay 5 more years to get all of it
By Nick LichtenbergDecember 30, 2025
3 days ago

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.