Alternatives
Stabletrust API alternatives: 9 documented options compared (November 2026)
The main documented alternatives to Stabletrust API are AP2, Coinbase Agentic Wallet, Fireblocks Agentic Payments Suite, Kite Agent Passport, Machine Payments Protocol, PayAI x402 facilitator, px402, Sui Agentic Payments, and x402.
Last verified 2026-11-03
Earlier records in this comparison were checked from 2026-10-19 through 2026-11-03.
Comparison
A cell reads not documented when the directory has no sourced value. The first row is this listing. The other rows are alphabetical by name.
| Listing | Status | Open source | Tags | Custody model | Rail or protocol | Per-payment cap | Period budget | Payee or protocol allowlist | Revoke | Who can raise the cap | License |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stabletrust APIThis listing | Live | Yes | stablecoins | The API page says requests send privateKey, and it says to use a dedicated agent wallet funded with only what the agent needs because that private key travels with every request. | not documented | not documented | not documented | not documented | not documented | not documented | The agentic API page says the code is open source at github.com/Fairblock/stabletrust-api. |
| AP2 | Beta | Yes | mandates, cards, stablecoins | User signed mandate | cards, x402 | Yes | Partial | Yes | not documented | not documented | Apache-2.0. |
| Coinbase Agentic Wallet | Live | No | wallets, stablecoins, http-402, spend-limits | Keys in Coinbase infrastructure | x402, onchain transfer | Yes | Yes | not documented | not documented | Not changeable by agent per docs | The MCP FAQ says Agentic Wallet MCP is free, wallet creation is free, and gas fees are free because they are sponsored. x402 service calls vary by service, and Coinbase Onramp uses standard fees. That page does not name a software license. |
| Fireblocks Agentic Payments Suite | Live | Yes | http-402, stablecoins, spend-limits, wallets | The 20 May 2026 blog says users keep custody of their funds through embedded wallets and MPC key management. | not documented | not documented | not documented | not documented | not documented | not documented | Apache License 2.0. The README says this repository is the open source facilitator you run yourself, and that a hosted facilitator is a separate offer. |
| Kite Agent Passport | Live | No | wallets, stablecoins, http-402, spend-limits | not documented | not documented | not documented | not documented | not documented | not documented | not documented | not documented |
| Machine Payments Protocol | Live | Yes | http-402, cards, stablecoins | Delegated access key or server key | cards, onchain transfer, Lightning | not documented | Yes | Yes | Yes | Wallet or owner signature | Apache-2.0. |
| PayAI x402 facilitator | Beta | No | http-402, stablecoins, pay-per-call | not documented | not documented | not documented | not documented | not documented | not documented | not documented | not documented |
| px402 | Live | No | http-402, stablecoins, pay-per-call | not documented | not documented | not documented | not documented | not documented | not documented | not documented | MIT. The npm page for px402 version 2.0.2 says the license is MIT. |
| Sui Agentic Payments | Beta | No | http-402, spend-limits, stablecoins | Owner pool, delegated key | x402, MPP, onchain transfer | Yes | Partial | Yes | Yes | not documented | not documented |
| x402 | Live | Yes | http-402, stablecoins, pay-per-call | not documented | not documented | not documented | not documented | not documented | not documented | not documented | Apache-2.0. |
How to choose
Stabletrust API is compared with the other Payment rails listings tagged stablecoins.
Tags on Stabletrust API are stablecoins.
Every listing in this comparison shares the tag stablecoins.
Other tags differ across the table.
Status is Live for Coinbase Agentic Wallet, Fireblocks Agentic Payments Suite, Kite Agent Passport, Machine Payments Protocol, px402, Stabletrust API, and x402. Status is Beta for AP2, PayAI x402 facilitator, and Sui Agentic Payments.
Open source is yes for AP2, Fireblocks Agentic Payments Suite, Machine Payments Protocol, Stabletrust API, and x402. Open source is no for Coinbase Agentic Wallet, Kite Agent Passport, PayAI x402 facilitator, px402, and Sui Agentic Payments.
Rail or protocol for Stabletrust API is not documented. Other values are cards, x402 for AP2, x402, onchain transfer for Coinbase Agentic Wallet, cards, onchain transfer, Lightning for Machine Payments Protocol, and x402, MPP, onchain transfer for Sui Agentic Payments.
The table has 10 rows. The first row is Stabletrust API. The other 9 rows are alphabetical by name. This page does not score listings.
Listings
- Stabletrust APIThis listing
- AP2Alternative
- Coinbase Agentic WalletAlternative
- Fireblocks Agentic Payments SuiteAlternative
- Kite Agent PassportAlternative
- Machine Payments ProtocolAlternative
- PayAI x402 facilitatorAlternative
- px402Alternative
- Sui Agentic PaymentsAlternative
- x402Alternative
Comparisons
No comparison page pairs Stabletrust API with one of these alternatives. Comparisons
Questions
- What are the documented alternatives to Stabletrust API?
- The main documented alternatives to Stabletrust API are AP2, Coinbase Agentic Wallet, Fireblocks Agentic Payments Suite, Kite Agent Passport, Machine Payments Protocol, PayAI x402 facilitator, px402, Sui Agentic Payments, and x402.
- How were these alternatives chosen?
- They are the other Payment rails listings tagged stablecoins. A page is built only when that set has at least 3 other listings. Peers are alphabetical by name. The page does not score listings and does not read sponsor records.
- What does the phrase not documented mean?
- The phrase not documented means the directory has no sourced value for that field on that listing. The page does not fill a blank with a guess.
- Which fields are compared?
- The table columns are Status, Open source, Tags, Custody model, Rail or protocol, Per-payment cap, Period budget, Payee or protocol allowlist, Revoke, Who can raise the cap, and License.
- Is there a comparison page or a gap note?
- No comparison page pairs Stabletrust API with one of these alternatives. A gap note for Stabletrust API is linked on this page.
- When was this page updated?
- The newest date among the records used here is 2026-11-03.