Swift Poe Search MCP

A Swift MCP (Model Context Protocol) server providing AI-powered search and research tools via the Poe API proxy. Supports 4 providers with 16 specialized tools.

Overview

This server acts as a bridge between MCP clients and multiple AI/search providers through Poe's unified API:

Provider	Tools	Description
Perplexity	3	Web search with citations, reasoning, deep research
Reka	3	Agentic research, fact-checking, similarity finding
Exa	9	Neural search, code context, company research, crawling
Linkup	1	#1 ranked factual accuracy on OpenAI's SimpleQA

Quick Start

Requirements

Poe subscription with API access
API key from poe.com/api_key
Linux: Ubuntu 20.04+ or Debian 11+, requires apt-get install libcurl4
macOS: macOS 14+ (Sonoma), Intel Macs supported via Rosetta
Swift: 6.2+ (for building from source)

Installation

Via NPM (no build required):

npx @mehmetbaykar/swift-poe-search-mcp@latest

Via Swift (build from source):

git clone https://github.com/mehmetbaykar/swift-poe-search-mcp.git
cd swift-poe-search-mcp
swift build -c release

Configuration

# Required
export POE_API_KEY=your_api_key

# Optional
export POE_BASE_URL=https://api.poe.com/v1  # default
export POE_TIMEOUT_MS=600000                 # default: 10 minutes
export ENABLED_PROVIDERS=perplexity,reka,exa,linkup  # default: all

MCP Client Configuration

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "swift-poe-search": {
      "command": "npx",
      "args": ["@mehmetbaykar/swift-poe-search-mcp@latest"],
      "env": {
        "POE_API_KEY": "your_api_key"
      }
    }
  }
}

Cursor

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project):

{
  "mcpServers": {
    "swift-poe-search": {
      "command": "npx",
      "args": ["@mehmetbaykar/swift-poe-search-mcp@latest"],
      "env": {
        "POE_API_KEY": "your_api_key"
      }
    }
  }
}

Claude Code CLI

Add to ~/.claude/settings.json:

{
  "mcpServers": {
    "swift-poe-search": {
      "command": "npx",
      "args": ["@mehmetbaykar/swift-poe-search-mcp@latest"],
      "env": {
        "POE_API_KEY": "your_api_key"
      }
    }
  }
}

Testing with MCP Inspector

POE_API_KEY=your_key npx @modelcontextprotocol/inspector@latest swift run

Available Tools

Perplexity Tools

`perplexity_ask`

Conversational web search using Sonar API with 200k context.

Parameter	Type	Default	Description
messages	[Message]	required	Conversation messages
searchContextSize	enum	low	low, medium, high
searchMode	enum	default	default, academic, sec
searchDomainFilter	string	""	Comma-separated domains (prefix with `-` to exclude)
searchLanguageFilter	string	""	ISO 639-1 codes (max 10)
searchRecencyFilter	enum	none	none, day, week, month, year
searchAfterDate	string	""	Publication date filter
searchBeforeDate	string	""	Publication date filter
country	string	""	ISO 3166-1 alpha-2 code
region	string	""	State/Province name
city	string	""	City name
latitude	string	""	Requires longitude + country
longitude	string	""	Requires latitude + country
returnImages	bool	false	Include images
returnVideos	bool	false	Include videos
imageDomainFilter	string	""	Domains for images (max 10)
imageFormatFilter	string	""	gif, jpg, png, webp

`perplexity_reason`

R1-1776 reasoning with web search via Sonar Reasoning Pro (128k context).

All parameters from perplexity_ask plus:

Parameter	Type	Default	Description
showThinking	bool	false	Show `<think>...</think>` reasoning tags

`perplexity_research`

Deep multi-step research via Perplexity Deep Research (128k context).

Parameter	Type	Default	Description
messages	[Message]	required	Conversation messages
showThinking	bool	false	Show reasoning tags
reasoningEffort	enum	low	low, medium, high
searchMode	enum	default	Only "default" supported
searchDomainFilter	string	""	Comma-separated domains
searchAfterDateFilter	string	""	Date filter
searchBeforeDateFilter	string	""	Date filter
lastUpdatedAfterFilter	string	""	Update date filter
lastUpdatedBeforeFilter	string	""	Update date filter

Reka Tools

`reka_research`

Autonomous research agent with multi-hop web synthesis.

Parameter	Type	Default	Description
messages	[Message]	required	Conversation messages
showThinking	bool	false	Show reasoning tags

`reka_verify_claim`

Fact-check claims with structured verdict, confidence, and reasoning.

Parameter	Type	Default	Description
claim	string	required	Statement to verify
showThinking	bool	false	Show reasoning tags

`reka_find_similar`

Find items similar to a target based on specific attributes.

Parameter	Type	Default	Description
target	string	required	Item to find similarities for
attribute	string	required	Characteristic to compare (e.g., "functionality", "style")
showThinking	bool	false	Show reasoning tags

Exa Tools

`exa_web_search`

Real-time web search with extensive filtering options.

Parameter	Type	Default	Description
query	string	required	Search query
numResults	int	10	Results count (1-100)
searchType	enum	auto	auto, neural, deep, fast
category	enum	""	company, research paper, news, pdf, github, tweet, etc.
showContent	bool	false	Display full page content
includeDomains	string	""	Domains to include
excludeDomains	string	""	Domains to exclude
includeText	string	""	Required text (max 5 words)
excludeText	string	""	Excluded text (max 5 words)
startCrawlDate	string	""	ISO 8601 date
endCrawlDate	string	""	ISO 8601 date
startPublishedDate	string	""	ISO 8601 date
endPublishedDate	string	""	ISO 8601 date
returnText	bool	true	Fetch page text
textMaxChars	string	""	Limit text length
includeHtmlTags	bool	false	Preserve HTML structure
returnHighlights	bool	false	AI-selected key snippets
highlightsSentences	int	3	Sentences per highlight (1-10)
highlightsPerUrl	int	3	Highlights per result (1-10)
highlightsQuery	string	""	Guide highlight selection
returnSummary	bool	false	AI-generated summaries
summaryQuery	string	""	Guide summary generation
livecrawl	enum	fallback	fallback, never, always, preferred
subpages	int	0	Linked subpages (0-10)
subpageTarget	string	""	Keyword for subpages
showThinking	bool	false	Show reasoning tags

`exa_deep_search`

Comprehensive search with automatic query expansion using deep mode.

Parameter	Type	Default	Description
objective	string	required	Natural language search description
searchQueries	string	""	Optional keyword queries (comma-separated, max 5)

Plus all filtering parameters from exa_web_search.

`exa_code_context`

Code examples and API documentation search.

Parameter	Type	Default	Description
query	string	required	Code/API search query
codeTokens	enum	dynamic	dynamic, 5000, 10000, 20000
showThinking	bool	false	Show reasoning tags

`exa_crawl_url`

Extract content from specific URLs.

Parameter	Type	Default	Description
url	string	required	URL to crawl
maxCharacters	int	3000	Max characters to extract
returnText	bool	true	Fetch page text
includeHtmlTags	bool	false	Preserve HTML
returnHighlights	bool	false	Key snippets
highlightsSentences	int	3	Sentences per highlight
highlightsPerUrl	int	3	Highlights per result
highlightsQuery	string	""	Guide highlights
returnSummary	bool	false	AI summaries
summaryQuery	string	""	Guide summaries
livecrawl	enum	preferred	fallback, never, always, preferred
subpages	int	0	Linked subpages
subpageTarget	string	""	Subpage keyword
showThinking	bool	false	Show reasoning tags

`exa_find_similar`

Find pages similar to a given URL.

Parameter	Type	Default	Description
url	string	required	Source URL
numResults	int	10	Results count (1-100)
category	enum	""	Content category filter
includeDomains	string	""	Domains to include
excludeDomains	string	""	Domains to exclude

Plus content extraction parameters (returnText, highlights, summaries, livecrawl, subpages).

`exa_company_research`

Company research with curated business sources.

Pre-configured domains: bloomberg.com, reuters.com, crunchbase.com, sec.gov, linkedin.com, forbes.com, businesswire.com, prnewswire.com

Parameter	Type	Default	Description
companyName	string	required	Company to research
numResults	int	5	Results count
startPublishedDate	string	""	ISO 8601 date
endPublishedDate	string	""	ISO 8601 date
returnText	bool	true	Fetch page text
returnHighlights	bool	false	Key snippets
returnSummary	bool	false	AI summaries
livecrawl	enum	fallback	Content freshness
showThinking	bool	false	Show reasoning tags

`exa_linkedin_search`

LinkedIn-specific search for profiles and companies.

Parameter	Type	Default	Description
query	string	required	LinkedIn search query
searchType	enum	all	profiles, companies, all
numResults	int	5	Results count
returnText	bool	true	Fetch page text
returnHighlights	bool	false	Key snippets
returnSummary	bool	false	AI summaries
livecrawl	enum	fallback	Content freshness
showThinking	bool	false	Show reasoning tags

`exa_quick_answer`

Quick LLM answer with search-backed citations.

Parameter	Type	Default	Description
query	string	required	Question to answer
showText	bool	false	Show text under citations
showThinking	bool	false	Show reasoning tags

`exa_deep_research`

Comprehensive AI-powered research agent.

Parameter	Type	Default	Description
instructions	string	required	Research question/instructions
model	enum	exa-research	exa-research (15-45s), exa-research-pro (45s-2min), exa-research-fast
showThinking	bool	false	Show reasoning tags

Linkup Tools

`linkup_search`

Factually accurate web search (ranked #1 on OpenAI's SimpleQA benchmark).

Parameter	Type	Default	Description
messages	[Message]	required	Conversation messages
depth	enum	standard	standard (fast), deep (comprehensive)

Development

Project Structure

Sources/
├── Core/
│   ├── API/
│   │   ├── Config.swift           # Environment configuration
│   │   ├── PoeAPIClient.swift     # HTTP client
│   │   └── PoeTypes.swift         # Request/response models
│   ├── Helpers/
│   │   ├── ContentStripper.swift  # Strips <think> tags
│   │   └── With.swift             # Functional builder
│   ├── Providers/
│   │   ├── ToolProvider.swift     # Tool factory
│   │   ├── ServerProvider.swift   # MCP server setup
│   │   └── ...                    # Other providers
│   ├── Tools/Search/
│   │   ├── Perplexity/            # 3 tools
│   │   ├── Reka/                  # 3 tools
│   │   ├── Exa/                   # 9 tools
│   │   └── Linkup/                # 1 tool
│   └── Environment.swift          # @TaskLocal DI
└── swift-poe-search-mcp/
    └── swift_search_mcp.swift     # Entry point

Tests/
├── Perplexity/
├── Reka/
├── Exa/
├── Linkup/
└── Environment/                   # Test utilities

Testing

# Run all tests
POE_API_KEY=your_key swift test

# Run specific provider tests
POE_API_KEY=your_key swift test --filter "PerplexityToolTests"
POE_API_KEY=your_key swift test --filter "ExaToolsTests"

# Run specific tool test
POE_API_KEY=your_key swift test --filter "webSearchTool"

Test Architecture:

Framework: Swift Testing (@Test, @Suite)
Pattern: @TaskLocal environment injection for test isolation
Type: Integration tests with real API calls

Adding New Tools

Create tool file in appropriate provider directory:

import Foundation
import MCPToolkit

struct MyNewTool: MCPTool {
  let name = "my_new_tool"
  let description: String? = "Tool description"

  @Schemable
  @ObjectOptions(.additionalProperties { false })
  struct Parameters: Sendable {
    let query: String
    let showThinking: Bool?
  }

  func call(with arguments: Parameters) async throws(ToolError) -> Content {
    let model = "model-name"
    let messages = [PoeMessage(role: "user", content: arguments.query)]

    do {
      let response = try await Environment.current.poeAPIClient().performChatCompletion(
        messages,
        model,
        nil,  // extra_body parameters
        !(arguments.showThinking ?? false)
      )
      return [ToolContentItem(text: response.content)]
    } catch let error as PoeError {
      throw ToolError(error.localizedDescription)
    }
  }
}

if config.isProviderEnabled(.myProvider) {
  tools += [MyNewTool()]
}

Add test in Tests/MyProvider/MyProviderToolTests.swift:

import Testing
@testable import Core

@Suite(.testEnvironment)
struct MyProviderToolTests {
  @Test func myNewTool() async throws {
    let tool = MyNewTool()
    let result = try await tool.call(with: .init(query: "test"))
    #expect(!result.isEmpty)
  }
}

API Reference

Base Configuration

URL: https://api.poe.com/v1
Format: OpenAI-compatible /v1/chat/completions
Auth: Bearer token via Authorization header
Custom params: Via extra_body field

Message Format

struct PoeMessage {
  let role: String    // "user", "assistant", "system"
  let content: String
}

Response Format

struct PoeResponse {
  let content: String
  let citations: [String]?
  let usage: TokenUsage?
}

Troubleshooting

libcurl error on Linux: Run apt-get install libcurl4
Platform not supported: Only linux-x64 and darwin-arm64 (macOS 14+) are supported
Issues: GitHub Issues

License

MIT