Oh Fax
Outbound US/CA fax for agents: quote PDF, pay via MPP, get delivery receipt.
我该使用它吗
质量与安全性
发现（1）
- LOWTool 'get_fax_receipt' description lacks action verb在 get_fax_receipt 中
基于对工具定义和协议合规性的自动分析。
上下文开销
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": {
"ohfax": {
"url": "https://app.ohfax.com/mcp"
}
}
}远程端点
https://app.ohfax.com/mcpstreamable-http它能做什么
工具清单
工具（4）
🟢quote_fax(to, document_url, document_base64)
Price a fax before committing to anything. Validates the destination and the document, counts pages, and returns an exact total plus a payment link. Free, and sends nothing. Always call this before send_fax.
输入模式
{
"type": "object",
"properties": {
"to": {
"type": "string",
"description": "Destination fax number. US and Canada only."
},
"document_url": {
"description": "Publicly reachable URL of a PDF.",
"type": "string"
},
"document_base64": {
"description": "Base64-encoded PDF, as an alternative to document_url.",
"type": "string"
}
},
"required": [
"to"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🔴send_fax(quote_id)
Returns the authorization instructions for sending a previously quoted fax. THIS ACTION COSTS MONEY AND CANNOT BE UNDONE: paying the returned link transmits a real document to a real fax machine. This tool itself does not charge you — it returns the exact price and a payment link, and the fax is only sent once you deliberately pay that link. Confirm the cost is acceptable before paying.
输入模式
{
"type": "object",
"properties": {
"quote_id": {
"type": "string",
"description": "A quote_id from quote_fax."
}
},
"required": [
"quote_id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_fax_status(fax_id)
Current delivery state of a fax: awaiting_payment, paid, submitted, sending, delivered, or failed. Failed faxes include a reason you can act on.
输入模式
{
"type": "object",
"properties": {
"fax_id": {
"type": "string"
}
},
"required": [
"fax_id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢get_fax_receipt(fax_id)
Verifiable delivery receipt for a completed fax. Available once the fax has reached a final state. Use this to prove the workflow finished.
输入模式
{
"type": "object",
"properties": {
"fax_id": {
"type": "string"
}
},
"required": [
"fax_id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}推荐提示词
get_fax_statusget_fax_status社区
证据