Pink data: x402 vs AP2 vs ACP in numbers, 495K weekly npm downloads vs zero official packages

说明与用途

x402 在所有使用指标上占据主导地位，而 AP2 和 ACP 缺乏官方 SDK 并显示出低开发活跃度，揭示了预算和审批管理方面的缺口。

问题

Developers lack side‑by‑side public metrics to evaluate AI‑agent payment plumbing protocols, making it hard to choose a mature, well‑used option.

结果

x402 leads by an order of magnitude on all usage metrics; AP2 and ACP lack official packages and have minimal development activity, exposing a gap in budget and approval features across all protocols.

工作流

• 1. Clone the Pink-Agentic-Payments/agent-payment-protocols-tracker repo. 2. Run python3 collect.py with a GitHub token to gather metrics. 3. Inspect tracker.csv for per‑protocol GitHub stars, contributors, commits, npm/PyPI downloads, MCP servers, and listed partners. 4. Review the WHAT_NONE_DECIDE.md file to understand budget/approval gaps. 5. Compare results to decide which protocol best meets project needs.

证据

x402's official npm packages get 494,987 downloads a week combined (the sum of its five official packages)

来源

AP2 and ACP have no official package we could confirm

来源

AP2's spec repo last pushed 2026-06-17. That doesn't necessarily mean the protocol is dead

来源

x402's own spec answers this directly, in its scope section: "Out of Scope: This specification does not include: ... Client-side budget management"

来源