ProofFetch — Cited Web Evidence
Free URL preflight. Cited text via separate paid Stripe MPP API.
我该使用它吗
质量与安全性
B
发现（3）
- HIGHTool poisoning patterns detected
- MEDIUMTool description contains URL to non-standard domain在 proof_fetch_preflight 中
- LOWTool 'proof_fetch_offer' suggests web access but openWorldHint=false在 proof_fetch_offer 中
基于对工具定义和协议合规性的自动分析。
上下文开销
~322token 数（工具定义）
~860 B典型响应大小
对注意力的影响极小（占 128k 上下文窗口的 0.25%）
这是每次将服务器的工具加载到模型上下文窗口时所消耗的大致 token 数。数值越高，可用于其他任务的注意力就越少。
安装
一键安装
将以下内容添加到你的 `claude_desktop_config.json` 文件中：
{
"mcpServers": {
"proof-fetch": {
"url": "https://proof-fetch-agent-api.neoaethel.workers.dev/mcp"
}
}
}远程端点
https://proof-fetch-agent-api.neoaethel.workers.dev/mcpstreamable-http它能做什么
工具清单
工具（2）
🟢 只读🟡 写入🔴 删除⚪ 未知
🟢proof_fetch_preflight(url, maxChars)
Start here: check a public URL before buying cited extraction. Returns fetchability, provenance, hashes and deterministic injection indicators, not page text or a safety guarantee. No payment or purchase. Example: {"url":"https://example.com/","maxChars":30000}.
输入模式
{
"type": "object",
"properties": {
"url": {
"type": "string",
"format": "uri",
"maxLength": 2048,
"description": "Public HTTP(S) document URL. No credentials, private networks, authenticated pages or browser rendering.",
"examples": [
"https://example.com/"
]
},
"maxChars": {
"type": "integer",
"minimum": 1000,
"maximum": 50000,
"default": 30000,
"description": "Maximum normalized characters to extract. Free preflight returns metadata only, never the extracted text.",
"examples": [
30000
]
}
},
"required": [
"url"
],
"additionalProperties": false
}🟢proof_fetch_offer
Read the $0.50-per-successful-extraction offer and request schema without buying. Paid cited text uses POST /v1/evidence with Stripe MPP and a caller-generated idempotency key, only with buyer payment authority. Example arguments: {}.
输入模式
{
"type": "object",
"properties": {},
"additionalProperties": false
}社区
证据
最近观测
已验证未记录版本2 个工具
已验证未记录版本2 个工具
已验证未记录版本2 个工具