{"title":"实用工具（时间、计算、随机）","slug":"tools","category":"api","summary":"公共实用端点 — 服务器时间、安全计算器、随机值生成器。无需认证。","audience":["human","llm"],"tags":["api","tools","utility","public"],"difficulty":"beginner","updated":"2026-06-27","word_count":129,"read_minutes":1,"llm_context":"No auth required for any /tools/* endpoint.\nGET /tools/time → { time, timezone, offset }\nGET /tools/calc?expr=(10+5)*3 → { result, expr } (safe, no eval, arithmetic only)\nGET /tools/random?type=uuid → { value, type } (types: uuid, int, float, hex, alpha)\nUse case: LLM agents that need current time, safe math, or random values.\n","lang":"zh","translated":true,"requested_lang":"zh","content_markdown":"\n# 实用工具\n\n`/tools` 端点是公共工具 — 无需认证。对于需要服务器时间、安全数学计算或随机值的 LLM Agent 很有用。\n\n## GET /tools/time\n\n获取当前服务器时间、时区与 UTC 偏移。\n\n```bash\ncurl https://synapse.schaefer.zone/tools/time\n```\n\n响应：\n\n```json\n{\n \"time\": \"2026-06-27T14:30:00.000Z\",\n \"timezone\": \"Europe/Berlin\",\n \"offset\": 120\n}\n```\n\n用例：LLM Agent 需要知道“现在是几点”，用于调度、时间戳或相对日期计算。\n\n## GET /tools/calc\n\n安全计算器 — 仅支持算术运算，不使用 `eval()`。支持 `+`、`-`、`*`、`/`、`%`、`(`、`)` 和数字。\n\n```bash\ncurl \"https://synapse.schaefer.zone/tools/calc?expr=(10+5)*3\"\n```\n\n响应：\n\n```json\n{\n \"result\": 45,\n \"expr\": \"(10+5)*3\"\n}\n```\n\n> [!TIP]\n> 用它代替在脑中计算或字符串解析。它既安全（无法注入代码）又准确。\n\n### 支持的运算符\n\n- `+` 加法\n- `-` 减法\n- `*` 乘法\n- `/` 除法\n- `%` 取模\n- `(` `)` 括号\n- 数字（整数与小数）\n\n### 示例\n\n```bash\ncurl \".../tools/calc?expr=2+2\" # → 4\ncurl \".../tools/calc?expr=3.14*100\" # → 314\ncurl \".../tools/calc?expr=100%7\" # → 2\ncurl \".../tools/calc?expr=(2+3)*4-1\" # → 19\n```\n\n## GET /tools/random\n\n生成随机值。\n\n```bash\n# UUID v4\ncurl \"https://synapse.schaefer.zone/tools/random?type=uuid\"\n# → { \"value\": \"a1b2c3d4-...\", \"type\": \"uuid\" }\n\n# 整数（默认范围 0-100）\ncurl \"https://synapse.schaefer.zone/tools/random?type=int&min=1&max=10\"\n# → { \"value\": 7, \"type\": \"int\" }\n\n# 浮点数\ncurl \"https://synapse.schaefer.zone/tools/random?type=float&min=0&max=1\"\n# → { \"value\": 0.7234, \"type\": \"float\" }\n\n# 十六进制字符串\ncurl \"https://synapse.schaefer.zone/tools/random?type=hex&min=8&max=16\"\n# → { \"value\": \"a3f7b2c1\", \"type\": \"hex\" }\n\n# 字母字符串\ncurl \"https://synapse.schaefer.zone/tools/random?type=alpha&min=8&max=12\"\n# → { \"value\": \"kQmzPwXn\", \"type\": \"alpha\" }\n```\n\n### 类型参数\n\n| 类型 | 参数 | 输出 |\n|------|-----------|--------|\n| `uuid` | 无 | UUID v4 字符串 |\n| `int` | `min`、`max`（默认 0-100） | 整数 |\n| `float` | `min`、`max`（默认 0-100） | 浮点数 |\n| `hex` | `min`、`max`（长度范围，默认 8-16） | 十六进制字符串 |\n| `alpha` | `min`、`max`（长度范围，默认 8-16） | 字母字符串 |\n\n## LLM Agent 的用例\n\n### 生成唯一 ID\n\n```bash\nID=$(curl -s .../tools/random?type=uuid | jq -r .value)\ncurl -X POST .../memory -d \"{\\\"key\\\": \\\"task_$ID\\\", ...}\"\n```\n\n### 计算百分比\n\n```bash\nTOTAL=142\nDONE=87\nPERCENT=$(curl -s \".../tools/calc?expr=($DONE*100)/$TOTAL\" | jq -r .result)\necho \"Progress: $PERCENT%\"\n```\n\n### 获取当前时间戳\n\n```bash\nNOW=$(curl -s .../tools/time | jq -r .time)\ncurl -X POST .../var -d \"{\\\"key\\\": \\\"last_run\\\", \\\"value\\\": \\\"$NOW\\\"}\"\n```\n\n### 生成测试数据\n\n```bash\nfor i in {1..10}; do\n NAME=$(curl -s \".../tools/random?type=alpha&min=5&max=10\" | jq -r .value)\n curl -X POST .../memory -d \"{\\\"key\\\": \\\"test_$i\\\", \\\"content\\\": \\\"$NAME\\\"}\"\ndone\n```\n\n## 下一步\n\n- [API 概览](/docs/api/overview) — 所有端点分组\n- [错误与错误处理](/docs/api/errors)\n","content_html":"

实用工具

\n

/tools 端点是公共工具 — 无需认证。对于需要服务器时间、安全数学计算或随机值的 LLM Agent 很有用。

\n

GET /tools/time

\n

获取当前服务器时间、时区与 UTC 偏移。

\n
curl https://synapse.schaefer.zone/tools/time

响应：

\n
{\n  "time": "2026-06-27T14:30:00.000Z",\n  "timezone": "Europe/Berlin",\n  "offset": 120\n}

用例：LLM Agent 需要知道“现在是几点”，用于调度、时间戳或相对日期计算。

\n

GET /tools/calc

\n

安全计算器 — 仅支持算术运算，不使用 eval()。支持 +、-、*、/、%、(、) 和数字。

\n
curl "https://synapse.schaefer.zone/tools/calc?expr=(10+5)*3"

响应：

\n
{\n  "result": 45,\n  "expr": "(10+5)*3"\n}
用它代替在脑中计算或字符串解析。它既安全（无法注入代码）又准确。

支持的运算符

\n\n

示例

\n
curl ".../tools/calc?expr=2+2"          # → 4\ncurl ".../tools/calc?expr=3.14*100"     # → 314\ncurl ".../tools/calc?expr=100%7"        # → 2\ncurl ".../tools/calc?expr=(2+3)*4-1"    # → 19

GET /tools/random

\n

生成随机值。

\n
# UUID v4\ncurl "https://synapse.schaefer.zone/tools/random?type=uuid"\n# → { "value": "a1b2c3d4-...", "type": "uuid" }\n\n# 整数（默认范围 0-100）\ncurl "https://synapse.schaefer.zone/tools/random?type=int&min=1&max=10"\n# → { "value": 7, "type": "int" }\n\n# 浮点数\ncurl "https://synapse.schaefer.zone/tools/random?type=float&min=0&max=1"\n# → { "value": 0.7234, "type": "float" }\n\n# 十六进制字符串\ncurl "https://synapse.schaefer.zone/tools/random?type=hex&min=8&max=16"\n# → { "value": "a3f7b2c1", "type": "hex" }\n\n# 字母字符串\ncurl "https://synapse.schaefer.zone/tools/random?type=alpha&min=8&max=12"\n# → { "value": "kQmzPwXn", "type": "alpha" }

类型参数

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
类型参数输出
uuid无UUID v4 字符串
intmin、max（默认 0-100）整数
floatmin、max（默认 0-100）浮点数
hexmin、max（长度范围，默认 8-16）十六进制字符串
alphamin、max（长度范围，默认 8-16）字母字符串
\n

LLM Agent 的用例

\n

生成唯一 ID

\n
ID=$(curl -s .../tools/random?type=uuid | jq -r .value)\ncurl -X POST .../memory -d "{\\"key\\": \\"task_$ID\\", ...}"

计算百分比

\n
TOTAL=142\nDONE=87\nPERCENT=$(curl -s ".../tools/calc?expr=($DONE*100)/$TOTAL" | jq -r .result)\necho "Progress: $PERCENT%"

获取当前时间戳

\n
NOW=$(curl -s .../tools/time | jq -r .time)\ncurl -X POST .../var -d "{\\"key\\": \\"last_run\\", \\"value\\": \\"$NOW\\"}"

生成测试数据

\n
for i in {1..10}; do\n  NAME=$(curl -s ".../tools/random?type=alpha&min=5&max=10" | jq -r .value)\n  curl -X POST .../memory -d "{\\"key\\": \\"test_$i\\", \\"content\\": \\"$NAME\\"}"\ndone

下一步

\n\n","urls":{"html":"/docs/api/tools","text":"/docs/api/tools?format=text","json":"/docs/api/tools?format=json","llm":"/docs/api/tools?format=llm"},"translations_available":["en","zh","hi","es","fr","ar","pt","ru","ja","de","it","ko","nl","pl","tr","sv","vi","th","id","uk"]}