MCP Fast Server
MCP server that enables web search via DuckDuckGo and readable content extraction from HTML pages using FastMCP.
README
EN
MCP Fast Server
An MCP (Model Context Protocol) server built with FastMCP that exposes two useful tools for agents/IDEs: web search via DuckDuckGo and readable content extraction from HTML pages.
Overview
- search(query, max_results=5): searches the web and returns titles, links, and snippets.
- fetch_content(url, timeout_seconds=15.0): fetches a URL and returns the main readable text (uses trafilatura; falls back to raw HTML if extraction fails).
Main implementation is in src/mcp_fast_server/server.py and the CLI is registered as mcp-fast-server via pyproject.toml.
Requirements
- Python >= 3.10
- uv installed (recommended for dependency management and execution)
Installation (with uv)
uv sync
This will install the dependencies defined in pyproject.toml (fastmcp, httpx, duckduckgo-search, trafilatura) into an isolated environment.
How to run
Direct (CLI)
uv run mcp-fast-server
This starts the MCP server over stdio and waits for a client to connect.
HTTP/Streamable HTTP and SSE
The server also supports modern HTTP transport (streamable-http) and legacy SSE.
- Streamable HTTP (recommended):
uv run mcp-fast-server --transport streamable-http --host 127.0.0.1 --port 8000 --path /mcp
- HTTP (alias compatible with streamable-http on recent versions):
uv run mcp-fast-server --transport http --host 127.0.0.1 --port 8000 --path /mcp
- SSE (legacy):
uv run mcp-fast-server --transport sse --host 127.0.0.1 --port 8000 --path /mcp/sse
You can also set options via environment variables: MCP_TRANSPORT, MCP_HOST, MCP_PORT, MCP_PATH.
Integrating with an MCP client
Configure your MCP client to launch the command above via stdio. Example for the MCP Inspector:
{
"mcpServers": {
"mcp-fast-server": {
"command": "uv",
"args": ["run", "mcp-fast-server"]
}
}
}
In the Inspector, select the "mcp-fast-server", connect, and try the tools.
Client over HTTP/Streamable HTTP
Example configuration for clients that support HTTP/Streamable HTTP:
{
"mcpServers": {
"mcp-fast-server-http": {
"url": "http://127.0.0.1:8000/mcp",
"transport": "http"
}
}
}
Or using the explicit alias "streamable-http":
{
"mcpServers": {
"mcp-fast-server-stream": {
"url": "http://127.0.0.1:8000/mcp",
"transport": "streamable-http"
}
}
}
Client over SSE (legacy)
{
"mcpServers": {
"mcp-fast-server-sse": {
"url": "http://127.0.0.1:8000/mcp/sse",
"transport": "sse"
}
}
}
Tools (API)
-
search
- Parameters:
query(str): search termmax_results(int, default 5): maximum number of results
- Returns:
List[Dict]with keystitle,href,body,source
- Parameters:
-
fetch_content
- Parameters:
url(str): URL to fetchtimeout_seconds(float, default 15.0): HTTP timeout
- Returns:
strwith the extracted main text; raw HTML if extraction fails.
- Parameters:
Quick examples
- Calling
searchwithquery="Model Context Protocol"returns up to 5 DuckDuckGo results with title/link/snippet. - Calling
fetch_contentwithurl="https://example.com"returns the main textual content of the page.
Project structure
src/
mcp_fast_server/
__init__.py
server.py # defines the tools and the entrypoint
pyproject.toml # project metadata and mcp-fast-server script
README.md
README.en.md
Development
Open src/mcp_fast_server/server.py and edit/add tools decorated with @mcp.tool().
To run during development:
uv run mcp-fast-server
Add new dependencies in pyproject.toml and sync with:
uv sync
Build & distribution (optional)
You can build artifacts (wheel/sdist) with:
uv build
Artifacts will be placed in dist/.
Notes & limitations
- Search uses DuckDuckGo via
duckduckgo-search; follow ToS and access policies. - Content extraction uses
trafilaturaand may not work perfectly on all pages. fetch_contentfollows redirects and raises for non‑successful HTTP responses.
License
Set the project license here (e.g., MIT, Apache-2.0). Update pyproject.toml accordingly if needed.
PT BR
MCP Fast Server · English README
Servidor MCP (Model Context Protocol) construído com FastMCP que expõe duas ferramentas úteis para agentes/IDE: pesquisa na web via DuckDuckGo e extração de conteúdo limpo de páginas HTML.
Visão geral
- search(query, max_results=5): busca na web e retorna títulos, links e trechos.
- fetch_content(url, timeout_seconds=15.0): baixa uma URL e retorna o texto principal legível (usa trafilatura; caso falhe, retorna o HTML bruto).
Implementação principal em src/mcp_fast_server/server.py e CLI registrada como mcp-fast-server via pyproject.toml.
Requisitos
- Python >= 3.10
- uv instalado (recomendado para gerenciar dependências e execução)
Instalação e setup (com uv)
# Dentro do diretório do projeto
uv sync
Isso instalará as dependências definidas em pyproject.toml (fastmcp, httpx, duckduckgo-search, trafilatura) em um ambiente isolado.
Como executar
Execução direta (CLI)
uv run mcp-fast-server
Isso inicia o servidor MCP via stdio, aguardando um cliente conectar.
HTTP/Streamable HTTP e SSE
O servidor também suporta transporte HTTP moderno (streamable-http) e SSE.
- Streamable HTTP (recomendado):
uv run mcp-fast-server --transport streamable-http --host 127.0.0.1 --port 8000 --path /mcp
- HTTP (alias compatível com streamable-http nas versões recentes):
uv run mcp-fast-server --transport http --host 127.0.0.1 --port 8000 --path /mcp
- SSE (legado):
uv run mcp-fast-server --transport sse --host 127.0.0.1 --port 8000 --path /mcp/sse
As opções também podem ser passadas por variáveis de ambiente: MCP_TRANSPORT, MCP_HOST, MCP_PORT, MCP_PATH.
Integração com um cliente MCP
Configure seu cliente MCP para iniciar o comando acima via stdio. Exemplo com o MCP Inspector:
{
"mcpServers": {
"mcp-fast-server": {
"command": "uv",
"args": ["run", "mcp-fast-server"]
}
}
}
No Inspector, selecione o servidor "mcp-fast-server", conecte e teste as ferramentas.
Cliente via HTTP/Streamable HTTP
Exemplo de configuração para clientes que suportam HTTP/Streamable HTTP:
{
"mcpServers": {
"mcp-fast-server-http": {
"url": "http://127.0.0.1:8000/mcp",
"transport": "http"
}
}
}
Ou usando o alias explícito "streamable-http":
{
"mcpServers": {
"mcp-fast-server-stream": {
"url": "http://127.0.0.1:8000/mcp",
"transport": "streamable-http"
}
}
}
Cliente via SSE (legado)
{
"mcpServers": {
"mcp-fast-server-sse": {
"url": "http://127.0.0.1:8000/mcp/sse",
"transport": "sse"
}
}
}
Ferramentas (API)
-
search
- Parâmetros:
query(str): termo de buscamax_results(int, padrão 5): máximo de resultados
- Retorno:
List[Dict]com chavestitle,href,body,source
- Parâmetros:
-
fetch_content
- Parâmetros:
url(str): URL a ser baixadatimeout_seconds(float, padrão 15.0): timeout HTTP
- Retorno:
strcom o texto principal extraído. Se a extração falhar, retorna o HTML.
- Parâmetros:
Exemplos rápidos
- Chamar
searchcomquery="Model Context Protocol"retorna até 5 resultados do DuckDuckGo com título/link/trecho. - Chamar
fetch_contentcomurl="https://example.com"retorna o corpo textual principal da página.
Estrutura do projeto
src/
mcp_fast_server/
__init__.py
server.py # define as ferramentas e o entrypoint
pyproject.toml # metadata do projeto e script mcp-fast-server
README.md
Desenvolvimento
Abra src/mcp_fast_server/server.py e edite/adicione ferramentas decoradas com @mcp.tool().
Para executar durante o desenvolvimento:
uv run mcp-fast-server
Dependências novas podem ser adicionadas ao pyproject.toml e sincronizadas com:
uv sync
Build e distribuição (opcional)
Você pode gerar artefatos (wheel/sdist) do projeto com:
uv build
Os artefatos serão colocados em dist/.
Notas e limitações
- A busca usa DuckDuckGo via
duckduckgo-search; respeite termos de uso e políticas de acesso. - A extração de conteúdo usa
trafilaturae pode não funcionar perfeitamente para todas as páginas. fetch_contentsegue redirecionamentos e lança erro para respostas HTTP não bem-sucedidas.
Licença
Defina a licença do projeto e adicione aqui (ex.: MIT, Apache-2.0). Atualize também o pyproject.toml se necessário.
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