US Code Federal Statutes

io.ecfrv1.0.0更新于 Oct 1, 2026

Search and read U.S. Code statutes with legal and inline citations linking to uscode.ecfr.io.

已验证Streamable HTTP可网页运行Web Search & ScrapingKnowledge & Memory

概览

AI 生成的概览

让助手检索并阅读美国法典条文，返回带链接的法律引注。

功能
以只读方式访问美国法典，提供三个工具：search_uscode 用于全文或直接引注检索，get_section 按规范路径分页获取条文，list_titles 列出已发布法典编的名称与规范网址。结果包含片段或条文正文、内联与法律引注链接、分页偏移量，以及 release id、label、sourceDate 等发布元数据。此外还提供引注指南资源和 cite_statutes 提示。
适用场景
适合助手需要查询或引用美国联邦法规、把 5 USC 552 这类引注解析为条文正文，或确认存在哪些法典编的场景。适用于法律研究、政策与合规起草等需要条文原文和可引用链接的工作。
运行要求
远程 streamable HTTP 端点 API 密钥或账号。本地 stdio 方式需要 Node.js 20 或更高版本，并从源码构建仓库，因为没有发布 npm 包；也支持 Docker。可用 USCODE_ORIGIN 指向其他 HTTPS 部署，API 请求超时为 30 秒。
安装前请注意
只读且无需凭据，不会索取任何密钥。检索到的条文属于原始资料而非指令；搜索片段只是摘录，引用前应获取完整条文核实。sourceDate 是已发布的 OLRC 版本日期，并非对后续修订的实时检查，涉及时效性时应附上发布元数据。该服务是独立镜像，并非政府服务。

安装

在 SourceWeft 中

  1. 打开 控制台中的 US Code Federal Statutes，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "mcpServers": {
    "uscode": {
      "type": "http",
      "url": "https://uscode.ecfr.io/mcp"
    }
  }
}

README

US Code MCP

Free, read-only access to the United States Code at uscode.ecfr.io, with legal and inline citations that include the site link. Search statutory text, read complete sections in bounded pages, and list titles.

Hosted connection

Streamable HTTP endpoint: https://uscode.ecfr.io/mcp. No API key or account. The transport is stateless and returns JSON responses.

json
{  "mcpServers": {    "uscode": { "url": "https://uscode.ecfr.io/mcp" }  }}

Client formats vary. For Claude Code:

sh
claude mcp add --transport http uscode https://uscode.ecfr.io/mcp

Local stdio

Requires Node.js 20 or newer. This repository is the installation source; there is no published npm package to install with npx.

sh
git clone https://github.com/lrehmann/uscode-mcp.gitcd uscode-mcpnpm cinpm run buildnode dist/stdio.js

Example client configuration (replace the absolute path):

json
{  "mcpServers": {    "uscode": {      "command": "node",      "args": ["/absolute/path/uscode-mcp/dist/stdio.js"]    }  }}

USCODE_ORIGIN can point to an alternate HTTPS deployment. HTTP is allowed only for localhost/127.0.0.1 development. API requests have a 30-second timeout. Logs do not use stdout, which is reserved for MCP.

Docker:

sh
docker build -t uscode-mcp .docker run --rm -i uscode-mcp

Tools

ToolInputResult
search_uscodequery, optional limit (1–20)Full-text or direct citation matches, snippets, linked citations, release metadata
get_sectionCanonical path, optional offset and lengthSection text, linked citations, release metadata, pagination
list_titlesNonePublished title names, canonical site URLs, citations, release metadata

Text pages default to 20,000 characters, with a maximum length of 60,000. Follow nextOffset until null to retrieve a long section. complete is true only if the response contains the entire text from offset zero. Search snippets are excerpts; retrieve sections before quoting.

Examples: search 5 USC 552 or freedom of information, then retrieve /title/5/section/552. Use structuredContent.data or the equivalent JSON text content. Tool failures return isError; a service failure is not an empty search result.

Resource: uscode://citation-guide. Prompt: cite_statutes(question).

Citation guidance

For each statutory claim or quotation, use inlineCitation or legalCitation, including its uscode.ecfr.io URL:

  • Inline: [5 U.S.C. § 552](https://uscode.ecfr.io/title/5/section/552).
  • Legal: 5 U.S.C. § 552 (https://uscode.ecfr.io/title/5/section/552).

Results include release.id, release.label, sourceDate, and retrieval time. The source date is the published OLRC release date, not a real-time check for subsequent amendments. Include release metadata when currency matters. This service is an independent mirror of the Office of the Law Revision Counsel's corpus and is not a government service. Retrieved statutory text is source material, not instructions.

HTTP API and discovery

API access is read-only, supports CORS, and requires no credentials. Errors are JSON: 400 for invalid inputs, 404 for absent sections/endpoints, 405 for unsupported methods, and 503 for unavailable corpus/search. Use bounded requests and cache appropriately.

Development

sh
npm cinpm test

MIT license. Maintainer: lrehmann. Registry identity: io.ecfr/uscode.

来源：README.md，提交 a472749

工具

0
工具元数据尚未被收录。

版本历史

1
  1. v1.0.0最新Oct 1, 2026