stackoverflow-mcp-server

Provides a Python Model Context Protocol (MCP) server that lets AI assistants search and retrieve Stack Overflow content (questions/answers) and perform related helpers like searching by query or error text, fetching a question by ID, and analyzing stack traces. It wraps Stack Exchange API access and includes configurable rate limiting.

Evaluated Apr 04, 2026 (21d ago)
Homepage ↗ Repo ↗ API Gateway ai-ml api mcp search developer-tools
⚙ Agent Friendliness
66
/ 100
Can an agent use this?
🔒 Security
53
/ 100
Is it safe for agents?
⚡ Reliability
34
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
70
Documentation
75
Error Messages
0
Auth Simplicity
85
Rate Limits
60

🔒 Security

TLS Enforcement
70
Auth Strength
55
Scope Granularity
10
Dep. Hygiene
55
Secret Handling
75

Uses an external Stack Exchange API key provided via environment variable. No MCP-specific auth, scopes, or authorization controls are described (scope_granularity low). TLS usage is not explicitly stated in README, but typical HTTP clients (httpx) imply HTTPS; treat transport security as likely but not guaranteed from the provided info. Rate limiting is configurable, which can reduce accidental quota exhaustion; however, retry/backoff guidance and structured security/error handling are not documented.

⚡ Reliability

Uptime/SLA
0
Version Stability
40
Breaking Changes
60
Error Recovery
35
AF Security Reliability

Best When

You have an MCP-capable agent runtime (e.g., Claude Desktop) and want programmatic access to Stack Overflow content for debugging and coding help, with structured tool calls.

Avoid When

You need strong contractual guarantees (SLA, mature stability) or guaranteed structured error codes/retry behavior at the MCP layer.

Use Cases

  • Answering programming questions by searching Stack Overflow with natural language queries
  • Finding solutions based on an error message or stack trace
  • Retrieving a specific Stack Overflow question and its answers/comments by ID
  • Curating higher-quality results via filters (tags, score thresholds, accepted answers, etc.)
  • Producing results for agents in Markdown or JSON for downstream processing

Not For

  • Use as an authoritative source for safety-critical decisions without verification
  • Use for complex full-text semantic search beyond what Stack Exchange APIs support
  • Use when you cannot supply a Stack Exchange API key or want no external API access
  • Use as a general-purpose knowledge base; it is specifically Stack Overflow/Stack Exchange content

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
No
Webhooks
No

Authentication

Methods: Stack Exchange API key via environment variable STACK_EXCHANGE_API_KEY
OAuth: No Scopes: No

Authentication is effectively delegated to the Stack Exchange API key; no MCP-specific OAuth flow or fine-grained scopes are described.

Pricing

Free tier: No
Requires CC: No

No pricing information for the MCP server itself is provided; costs are primarily driven by Stack Exchange API usage/quota.

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • MCP server is described as beta; behavior and error handling at the MCP layer may change.
  • Rate limiting relies on both Stack Exchange quotas and server-side configuration; agents may see throttling if limits are reached.

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Scores are editorial opinions as of 2026-04-04.

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