In three days, API suppliers that validated their presence within the index grew by 26%.
The index reveals that three requirements are competing to dominate funds amongst AI applications.
Ryan GentryCEO of Bitcoin Infrastructure Acquisition Corp, introduced three key milestones following the launch of the Index 402. This listing works as a bridge: it permits synthetic intelligence (AI) agent builders to find operational fee APIs, whereas suppliers can record their endpoints to realize visibility.
As Gentry reported on March 22, the preliminary impression was instant. In simply 72 hours, suppliers that validated their presence within the index elevated by 26% and consultations to the listing multiplied 50 instances (though the bottom determine was not specified). As well as, greater than 100 new endpoints immediately.
Given these outcomes, Brian ArmstrongCEO of Coinbase, confirmed his assist with an enthusiastic: “Nice job!”
And endpoint is the precise deal with to which an information request is distributed. Till the arrival of this index, there was no centralized registry that reported in actual time which entry factors required fee or in the event that they had been energetic.
In step with this development, the Index 402 workforce applied a server replace that enables the AI brokers themselves to question the listing autonomously. This enchancment reduces the consumption of computational sources by 85%. Gentry additionally introduced that the approval course of for brand spanking new registrations will quickly be 100% automated.
Formally offered on March 19 as the primary device of its type, the 402 Index already It has greater than 15,000 energetic entry factorswhose availability is checked each hour.
A knowledge that emerges from Index 402
When surveying these 15,000 endpointsthe index revealed a further piece of knowledge. Right this moment three completely different requirements coexist for processing funds between AI brokers, and none dominates the market:
- L402developed by Lightning Labs in 2019 on the Bitcoin Lightning community, leads in high quality: 43% of its endpoints cross index well being checks.
- x402launched by Coinbase in 2025, concentrates the most important variety of energetic suppliers.
- MPPready by the businesses Stripe and Tempo.
All three share a typical root: HTTP code 402, a state reserved in web protocols for the reason that Nineties below the outline “fee required,” which was by no means formally applied as a result of there was no digital foreign money to assist it.
Every of the requirements listed above makes use of that 402 code as a technical foundation for demanding fee earlier than granting entry to a service.
The battle has concrete penalties: every customary implies a distinct fee infrastructure. L402 settles on the Lightning Community, whereas x402 and MPP function on different layers.
Thus, the usual that’s imposed might decide on which community computerized funds between AI brokers run, a market that doesn’t but have a dominant software however that corporations similar to Anthropic and Stripe are already positioning.
L402 and Lightning: the tasks that already function
Whereas the 402 Index maps the ecosystem, two initiatives reported by CriptoNoticias They already function on L402 with AI brokers and Lightning Community (LN) de Bitcoin.
On February 12, Lightning Labs launched an open supply toolset that permits AI brokers pay, acquire and authenticate utilizing bitcoin, with out financial institution accounts or conventional API keys.
The core is exactly L402. When an agent tries to entry an API protected by that customary, the service responds with a 402 code and a Lightning bill. The agent pays that bill and receives a cryptographic proof that works as an entry credential, with out prior registration or person.
To mitigate the danger of giving financial entry to an autonomous agent, Lightning Labs added distant signing (non-public keys are saved on a separate machine) and restricted credentials that restrict how a lot the agent can spend and what operations it may execute.
A earlier initiative, reported by CriptoNoticias on January 31, follows the same logic. The Lightning Allow workforce offered one other open supply device that connects AI brokers to Lightning wallets via the Nostr Pockets Join (NWC) protocol, a decentralized communication customary that establishes the hyperlink between the agent and the pockets with out intermediaries.
With this Lightning Labs device, builders can set most spending budgets– As soon as the assigned steadiness has been exhausted, the agent can not make any extra funds mechanically. Funds are restricted to Lightning BOLT11 addresses, an bill format that features the recipient’s signature and stuck quantity, stopping funds to unauthorized recipients or for quantities aside from established quantities. This device can be constructed on L402.
Each tasks intention on the similar mannequin: AI brokers that pay for digital companies autonomously, for pennies or fractions of a cent, with out human intervention in every transaction. The 402 Index, on this context, capabilities as the primary map of a territory that’s nonetheless taking form.
