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A2A Board Engine(MCP 服务器)

一个用于零 Token 边缘预过滤代理间(A2A)FEP 议价共识的 MCP(Model Context Protocol)服务器。

该服务器公开了 Model Context Protocol(MCP)工具提示,允许 LLM 发布意图板、在 Cloudflare 边缘通过余弦相似度查询匹配候选,并执行 4 轮最优停止议价协议。


🛠️ 公开的 MCP 工具

LLM 代理可以通过以下 MCP 工具接口与该引擎交互:

1. post_board

将语义意图板发布到 Cloudflare 边缘数据库,并附带 24 小时 TTL 押金。

  • 输入:

    • domain(字符串):领域类别(例如 "FRUIT_AGRICULTURE")。

    • identity(字符串):产品或服务标识符。

    • intent_space(对象):包含 targetacceptable_synonymsnegative_keywordsprice_range_usdc

    • similarity_threshold(数字):余弦相似度阈值(默认:0.75)。

  • 标头: 需要 X-PAYMENT 微支付标头(0.15 USDC 押金)。

2. match_board

使用 Cloudflare Vectorize(384 维嵌入)和价格区间重叠执行即时边缘级匹配检查。

  • 输入:

    • 候选板 JSON 结构。

  • 输出:

    • 返回带有对等方端点信号的 MATCH_SUCCESS,或返回 400 Bad Match(0 个 LLM token 被浪费)。


Related MCP server: Servicialo

💡 MCP 提示与协议规则

a2a-fep-consensus-prompt

面向在握手后参与协商的代理的结构化提示约束:

  1. 微协商(第 1-4 轮): 仅在重叠约束范围内执行价格/属性调整。

  2. 维度跳跃(轮次 >= 5): 已达到硬限制。代理必须触发 HTTP 402 以进行元跳跃,或触发 HTTP 409 以中止。


📐 架构与数学基础

  • 预过滤: Cloudflare Workers + Vectorize + D1

  • 优化: Softmax 死锁预防($P = p^{2n}$)与最优停止理论($n^* = 3 \sim 4$)相结合。

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