Stack Overflow MCP Server
for AI Agents
Connect your AI agent to StackOne's Stack Overflow MCP server and give it 49 MCP tools out of the box. Auth, tool execution, and security all managed.
StackOne 
Coverage
49 Agent Actions
Extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your Stack Overflow MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every Stack Overflow tool response scanned for prompt injection in milliseconds — 88.7% accuracy, all running on CPU.
Prompt Injection Defense →
Performance
Max Agent Context. Min Cost.
Free up to 96% of your agent's context window to enhance reasoning and reduce cost, on every Stack Overflow call.
Tools Discovery →What is the Stack Overflow MCP Server?
A Stack Overflow MCP server lets AI agents work with Stack Overflow data through the Model Context Protocol, Anthropic's open standard for connecting LLMs to external tools. StackOne's Stack Overflow MCP server ships with 49 pre-built actions, fully extensible via the Connector Builder, plus managed authentication, prompt injection defense, observability, and agent execution runtime. Connect it from MCP clients like Claude Desktop, Claude Code, Cursor, Goose, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.
All Stack Overflow MCP Tools
Every StackOne action for Stack Overflow, ready for your agent. Scoped to exactly what you need.
Answers
- List Answers
List all answers on a Stack Exchange site.
- Get Answers
Get one or more answers by their ids.
Badges
- List Badges
List all badges defined on a Stack Exchange site.
- Get Badges
Get one or more badges by their ids.
Comments
- List Comments
List all comments on a Stack Exchange site.
- Get Comments
Get one or more comments by their ids.
Posts
- List Posts
List all posts (questions and answers) on a Stack Exchange site.
- Get Posts
Get one or more posts by their ids.
Questions
- List Questions
List all questions on a Stack Exchange site.
- Get Questions
Get one or more questions by their ids.
- Search Questions
Search questions on a Stack Exchange site by tag and title.
Users
- List Users
List all users on a Stack Exchange site.
- Get Users
Get one or more users by their ids.
Other (36)
- List Answer Comments
List the comments on one or more answers.
- Get Questions By Answer Ids
Get the parent questions for a set of answer ids.
- List Named Badges
List all non-tag (named) badges on a Stack Exchange site.
- List Recent Badge Recipients
List users who were recently awarded badges on a Stack Exchange site.
- List Collectives
List all collectives on a Stack Exchange site.
- List Sites
List all sites in the Stack Exchange network.
- Get Site Info
Get aggregate statistics for a Stack Exchange site.
- List Post Revisions
List the revisions made to one or more posts.
- List Comments On Posts
List comments on a set of posts by post id.
- Get Revisions By Guids
Get edit revisions by their revision guids.
- List Question Answers
List the answers to one or more questions.
- List Question Comments
List the comments on one or more questions.
- List Linked Questions
List questions linked to one or more questions.
- List Related Questions
List questions related to one or more questions.
- List Featured Questions
List featured (bountied) questions on a Stack Exchange site.
- List Unanswered Questions
List questions the site considers unanswered.
- List Questions With No Answers
List questions that have zero answers on a Stack Exchange site.
- Search Excerpts
Full-text search returning lightweight question and answer excerpts (not full objects).
- List Suggested Edits
List suggested edits across a Stack Exchange site.
- List Tags
List all tags on a Stack Exchange site.
- Get Tag Info
Get metadata for one or more tags by name.
- List Tag Synonyms
List all tag synonyms on a Stack Exchange site.
- List Tag Wikis
List the tag wikis for one or more tags.
- List Tag Top Answerers
List the top answerers for a tag over a time period.
- List Synonyms By Tags
List tag synonyms that point at the given tags.
- List Related Tags
List tags that frequently co-occur with the given tags.
- List FAQs By Tags
List the frequently asked (top) questions for the given tags.
- List Top Askers On A Tag
List the top-asking users for a tag over a period.
- List User Questions
List the questions asked by one or more users.
- List User Answers
List the answers posted by one or more users.
- List User Comments
List the comments posted by one or more users.
- List User Badges
List the badges earned by one or more users.
- List User Tags
List the tags one or more users are active in.
- List User Reputation
List reputation changes for one or more users.
- Advanced Search
Run a full-text and filtered search for questions on a Stack Exchange site.
- Find Similar Questions
Find questions similar to a given title on a Stack Exchange site.
Set Up Your Stack Overflow MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to Stack Overflow in under 10 lines of code.
Agent Frameworks
JSON{
"mcpServers": {
"stackone": {
"command": "npx",
"args": [
"-y",
"mcp-remote@latest",
"https://api.stackone.com/mcp?x-account-id=<account_id>",
"--header",
"Authorization: Basic <YOUR_BASE64_TOKEN>"
]
}
}
}
Platform Resources
Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery
Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.
10 min
Indirect Prompt Injection Defense for MCP Tools: A Technical Guide
MCP tools that read emails, CRM records, and tickets are indirect prompt injection vectors. Here's how we built a two-tier defense that scans tool results in ~11ms.
12 min
MCP vs A2A: Architecture, Security, and When to Use Each
MCP vs A2A: what each protocol standardizes, how they differ, their shared security risks including indirect prompt injection, and when to use one, both, or a hybrid architecture.
12 min
MCP vs API: What Hundreds of Connector Builds Taught Us
MCP wraps APIs, it doesn't replace them. After building hundreds of connectors that serve both, here's when each approach wins.
14 min read
Stack Overflow MCP Server FAQ
Does StackOne have a Stack Overflow MCP server?
Stack Overflow MCP server vs direct API integration — what's the difference?
How does Stack Overflow authentication work for AI agents?
origin_owner_id.Are Stack Overflow MCP tools vulnerable to prompt injection?
What is the context bloat of a Stack Overflow agent and how do I avoid it?
Can I limit which actions my Stack Overflow agent can access?
Can I create custom agent actions for my Stack Overflow MCP server?
When should I NOT use a Stack Overflow MCP server?
What AI frameworks and AI clients does the StackOne Stack Overflow MCP server support?
Put your AI agents to work
All the tools you need to build and scale AI agent integrations, with best-in-class connectivity, execution, and security.