google-agentic-commerce/a2a-x402
The A2A x402 Extension brings cryptocurrency payments to the Agent-to-Agent (A2A) protocol, enabling agents to monetize their services through on-chain payments. This extension revives the spirit of HTTP 402 "Payment Required" for the decentralized agent ecosystem.
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Where it stands
Rank, growth pace and release cadence relative to everything GStars tracks.
No releases in the last 90 days; the most recent was 409 days ago, with 7 contributors on GitHub.
Peaked at #73 in the weekly ranking the week of Sep 21, its best in the past year.
Use Cases & Benefits
- Enables cryptocurrency payments within the Agent-to-Agent protocol to monetize agent services via on-chain transactions.
- Provides a standardized, language-agnostic payment flow reviving HTTP 402 semantics for decentralized agent commerce.
- Use for integrating pay-per-use API call monetization in decentralized multi-agent systems.
- Use for implementing automated on-chain payment verification and settlement in AI inference services.
- Use for developing cross-language agent applications that require seamless cryptocurrency payment handling.
Should you depend on it?
License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.
License
Apache 2.0
Permissive: commercial use, modification and redistribution are allowed with attribution; includes an explicit patent grant from contributors.
Community files
- README: present
- Contributing guide: present
- Code of conduct: present
Watch-outs
No watch-outs from GStars' checks.
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From the README
The A2A x402 Extension brings cryptocurrency payments to the Agent-to-Agent (A2A) protocol, enabling agents to monetize their services through on-chain payments. This extension revives the spirit of HTTP 402 "Payment Required" for the decentralized agent ecosystem.
Enable agent commerce by providing a standardized way for agents to charge for their services and receive payments on-chain. This transforms any A2A agent into a commercial service that can charge for API calls, data processing, AI inference, or any other valuable capability.
This repository contains the specification, core libraries, and example implementations for the A2A x402 extension, supporting multiple languages.
Daily snapshots
Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots
Forks
159+16
Open issues
76+18
Compared with peers in Backend
Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth
| Repository | Stars | +7d | Health | Last release |
|---|---|---|---|---|
| anthropics/skills | 187.8K | +2.9K | 15 | — |
| DuarteSantos8/openGym | 19.7K | +2.4K | 60 | 2 days ago |
| shiyu-coder/Kronos | 47.0K | +2.3K | 16 | — |
| NationalSecurityAgency/ghidra | 98.2K | +2.3K | 64 | 14 days ago |
| microsoft/VibeVoice | 56.0K | +1.1K | 29 | — |
| google-agentic-commerce/a2a-x402 | 569 | — | 19 | 409 days ago |
| Category median | 56.0K | +2.3K | 29 | — |
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