generated: '2026-10-07'
method: probed
status: published
source: https://s1.dev/docs/integrations/mcp; https://s1.dev/.well-known/s1-dev-mcp-server-card.json; anonymous POST tools/list
  to https://mcp.search1api.com/mcp (401, OAuth challenge) on 2026-10-07
description: Search1API operates an official hosted MCP server (Streamable HTTP) at https://mcp.search1api.com/mcp
  exposing five tools (search, news, crawl, sitemap, trending) over OAuth 2.1 (PKCE + dynamic client registration
  via clerk.s1.dev) or a Search1API API key. The same server ships as the npm package search1api-mcp for local stdio
  use. Tool names and input schemas below are the ones the provider PUBLISHES in its MCP server card and docs table;
  an anonymous tools/list was refused with 401 (0.6.1 restored authentication on every /mcp request), so no live
  tool listing was observed.
server:
  name: search1api
  transport: streamable-http
  url: https://mcp.search1api.com/mcp
  auth: 'oauth2 or api-key (Authorization: Bearer)'
  protocol_revision_claimed: 2026-07-28 (docs); server card protocolVersion 2025-06-18
  protected_resource: https://mcp.search1api.com/.well-known/oauth-protected-resource
  authorization_server: https://clerk.s1.dev
  server_card: well-known/s1-dev-mcp-server-card.json
  version: 0.6.1
local:
  name: search1api-mcp
  transport: stdio
  install: npx -y search1api-mcp
  env:
  - SEARCH1API_KEY
  source: https://github.com/superagents-lab/search1api-mcp
  registry: https://www.npmjs.com/package/search1api-mcp
  version: 0.6.1
  published: '2026-09-03'
deployment:
  mode: both
  endpoint: https://mcp.search1api.com/mcp
  install: npx -y search1api-mcp
  package: https://www.npmjs.com/package/search1api-mcp
  auth: oauth
  verified: probed
  probe: gated
  probe_detail: POST tools/list without credentials -> HTTP 401 {"jsonrpc":"2.0","error":{"code":-32001,"message":"Authentication
    is required. Use OAuth 2.1 discovery or provide a Search1API API key as a Bearer token."}}
  checked: '2026-10-07'
tools:
- name: search
  description: Search the live public web when the user needs current information, sources, or research. Returns
    citable results with id, title, URL, and text. Each result includes a URL that can be read in full.
  inputs:
  - query
  - max_results
  - search_service
  - crawl_results
  - include_sites
  - exclude_sites
  - time_range
  required:
  - query
  source: https://s1.dev/.well-known/s1-dev-mcp-server-card.json
- name: news
  description: Search current news when the user asks about recent events, announcements, or coverage. Returns citable
    article results with title, URL, snippet, and optional extracted text.
  inputs:
  - query
  - max_results
  - search_service
  - crawl_results
  - include_sites
  - exclude_sites
  - time_range
  required:
  - query
  source: https://s1.dev/.well-known/s1-dev-mcp-server-card.json
- name: crawl
  description: Extract the readable title and full text from a public URL supplied by the user or returned by search.
  inputs:
  - url
  required:
  - url
  source: https://s1.dev/.well-known/s1-dev-mcp-server-card.json
- name: sitemap
  description: Discover related public links from a page or domain when the user wants to explore a site's structure
    or available pages.
  inputs:
  - url
  required:
  - url
  source: https://s1.dev/.well-known/s1-dev-mcp-server-card.json
- name: trending
  description: List currently trending repositories or stories from GitHub or Hacker News when the user asks what
    is popular now.
  inputs:
  - search_service
  - max_results
  required:
  - search_service
  source: https://s1.dev/.well-known/s1-dev-mcp-server-card.json
tool_evidence:
  l3: table
  evidence_url: https://s1.dev/docs/integrations/mcp
  note: Five-row Tool/What it does/Required table on the docs page, matching the server card; names are documented,
    not observed from a live tools/list.
directories:
- https://claude.ai/directory/search1api
- https://smithery.ai (listed per docs)
- https://cursor.directory (Agent Plugins manifest plugin.json in repo)
secondary_servers:
- name: Search1API Blog MCP
  url: https://blog.s1.dev/mcp
  transport: streamable-http
  verified: probed
  note: Anonymous tools/list answered 200 with four read-only blog content tools; its protected-resource document
    names https://blog.s1.dev/_emdash as authorization server for write scopes. A content server for the blog, not
    the search API.
  tools:
  - name: search_posts
    description: Search Search1API Blog posts by keyword. Returns matching posts with excerpts and URLs.
    inputs:
    - query
    - limit
  - name: list_posts
    description: List Search1API Blog posts in reverse chronological order. Optionally filter by tag slug and paginate
      with nextCursor.
    inputs:
    - limit
    - cursor
    - tag
  - name: get_post
    description: Get a single Search1API Blog post by slug, including plain-text body content.
    inputs:
    - slug
  - name: list_tags
    description: List all tags used on the Search1API Blog.
    inputs: []