Base URL
https://agentskb-api.agentskb.com/api/free Status: Production - Deployed on Azure VM with HTTPS and auto-scaling
Performance: Average response time <1s (100 questions in batch). Knowledge base contains 39,827 Q&As across 272 technical domains.
Authentication: None required - completely free and public.
Rate Limiting: Not currently enforced. Use responsibly.
Quick Start in 30 Seconds
Start asking technical questions and get researched answers backed by 99% accuracy.
# Ask a question
curl "https://agentskb-api.agentskb.com/api/free/ask" \
-H "Content-Type: application/json" \
-d '{"question":"What is FastAPI?"}'
# Search for questions
curl "https://agentskb-api.agentskb.com/api/free/search?q=postgresql"
# Get statistics
curl "https://agentskb-api.agentskb.com/api/free/stats"Knowledge Base Overview
Statistics
- 39,827 Q&As
- 272 technical domains
- 99% avg confidence
- Curated by Claude Sonnet 4.5
What We Cover
- Programming languages (Python, TypeScript, Go, Rust)
- Web frameworks (React, Next.js, Angular, FastAPI)
- Cloud platforms (AWS, Azure, GCP)
- Infrastructure (Docker, Kubernetes, Terraform)
- Databases (PostgreSQL, MongoDB, Redis)
- And 257 more domains...
How it works
Your questions help the KB grow
How AgentsKB Works
AgentsKB operates in two modes, designed for different use cases:
Instant Mode (Default)
- Response: <100ms
- If found: Returns verified answer
- If not found: Returns message, queues for research
- Best for: High-throughput, non-critical queries
Research Mode
- Response: 60-180s (if researching)
- If found: Returns verified answer instantly
- If not found: Researches live, returns answer
- Best for: Critical queries, agent automation
Self-Healing Knowledge Base
When you use research_mode: "research" and the answer isn't in our KB, we:
- Trigger live research using multiple AI models
- Verify the answer against authoritative sources
- Return the researched answer to you
- Automatically save it to the KB for future queries
Building an agent?
API Endpoints
Quick Reference
| Method | Endpoint | Purpose |
|---|---|---|
| GET | / | API information and status |
| GET | /health | Health check and system status |
| GET | /stats | Knowledge base statistics and metrics |
| POST | /ask | Ask a question and get a researched answer |
| POST | /ask-batch | Ask up to 100 questions in a single request |
| GET | /search | Search the Q&A database |
/ Returns API information including version, status, and available endpoints.
Example Request
curl "https://agentskb-api.agentskb.com/api/free/"Example Response
{
"name": "AgentsKB API",
"version": "1.0.0",
"description": "Researched Q&A knowledge base for technical questions",
"status": "production",
"endpoints": [
"/health",
"/stats",
"/ask",
"/ask-batch",
"/search"
],
"stats": {
"total_questions": 39827,
"domains": 272,
"accuracy": 99
}
}/health Health check endpoint to verify API and database status. Returns system health, uptime, and response time metrics.
Example Request
curl "https://agentskb-api.agentskb.com/api/free/health"Example Response
{
"status": "healthy",
"timestamp": "2025-11-11T00:30:00.000Z",
"uptime": 86400.5,
"services": {
"api": {
"status": "healthy",
"response_time_ms": 45
},
"database": {
"status": "healthy",
"type": "Qdrant",
"response_time_ms": 12
},
"vector_search": {
"status": "healthy",
"dimension": 384,
"model": "sentence-transformers/all-MiniLM-L6-v2"
}
}
}/stats Returns comprehensive statistics about the knowledge base including domain breakdown, accuracy metrics, and coverage.
Example Request
curl "https://agentskb-api.agentskb.com/api/free/stats"Example Response
{
"total_questions": 39827,
"domains": 272,
"avg_confidence": 99,
"curated_by": "Claude Sonnet 4.5",
"verification_rate": 99.96,
"domains_list": [
"python",
"typescript",
"javascript",
"nodejs",
"go",
"rust",
"react",
"vue",
"nextjs",
"angular",
"aws",
"azure",
"gcp",
"terraform",
"kubernetes",
"postgresql",
"mongodb",
"redis",
"elasticsearch",
"docker",
"jenkins",
"github-actions",
"gitlab-ci",
"fastapi",
"django",
"flask",
"spring",
"laravel",
"express",
"gin",
"rust",
"actix",
"axum",
"pandas",
"numpy",
"tensorflow",
"pytorch",
"machine-learning",
"data-science",
"blockchain",
"ethereum",
"solidity",
"web3",
"graphql",
"rest",
"microservices",
"devops",
"sre"
],
"domain_breakdown": {
"python": 89,
"typescript": 76,
"aws": 65,
"kubernetes": 54,
"postgresql": 48,
"fastapi": 42,
"docker": 38,
"react": 35,
"go": 32,
"rust": 28
}
}/ask Ask a technical question and receive a researched answer with confidence score and sources.
Request Body
| Field | Type | Required | Description |
|---|---|---|---|
| question | string | Yes | The technical question to ask |
| domain | string | No | Optional domain filter (e.g., "python", "aws") |
| research_mode | string | No | Set to "research" to wait for live research if answer not in KB (60-180s). Costs 1.0 quota. |
| tier | string | No | Quality tier: GOLD, SILVER, or BRONZE |
Research Mode
research_mode: "research" when you need a guaranteed answer. If the question isn't in the KB, we'll research it live (60-180s) and save the answer for future queries. Learn more in the Agent Guide.
Example Request
curl "https://agentskb-api.agentskb.com/api/free/ask" \
-H "Content-Type: application/json" \
-d '{
"question": "What is FastAPI and how is it different from Flask?",
"domain": "python",
"tier": "GOLD"
}'Example Response
{
"question": "What is FastAPI and how is it different from Flask?",
"answer": "FastAPI is a modern, high-performance web framework...",
"confidence": 0.96,
"sources": [
"https://fastapi.tiangolo.com/",
"https://docs.python.org/3/library/typing.html"
],
"source_count": 2,
"researched": false,
"match_score": 0.94,
"content_type": "explanation"
}Content Types
The content_type field indicates what kind of answer was returned:
| Type | Description |
|---|---|
| fact | Direct lookup, single answer |
| explanation | How something works |
| methodology | Step-by-step guide |
| troubleshooting | Error diagnosis and fixes |
| decision | Compare options |
| reference | API/syntax documentation |
/ask-batch Ask multiple questions in a single request. Optimized for high-throughput batch processing - up to 100 questions in under 1 second.
Performance & Cost
Request Body
| Field | Type | Required | Description |
|---|---|---|---|
| questions | string[] | Yes | Array of questions (1-100 questions) |
| research_mode | string | No | Set to "research" to research unmatched questions (up to 5 in parallel) |
Example Request
curl "https://agentskb-api.agentskb.com/api/free/ask-batch" \
-H "Content-Type: application/json" \
-d '{
"questions": [
"What is the default max_connections in PostgreSQL?",
"How do I create an index in PostgreSQL?"
],
"research_mode": "research"
}'Example Response
{
"total": 2,
"found": 2,
"not_found": 0,
"researched": 0,
"answers": [
{
"question": "What is the default max_connections in PostgreSQL?",
"answer": "The default value for max_connections in PostgreSQL is 100...",
"confidence": 0.99,
"sources": ["https://www.postgresql.org/docs/current/runtime-config-connection.html"],
"topic": "postgresql",
"found": true,
"researched": false,
"content_type": "fact"
},
{
"question": "How do I create an index in PostgreSQL?",
"answer": "To create an index in PostgreSQL, use CREATE INDEX...",
"confidence": 0.98,
"sources": ["https://www.postgresql.org/docs/current/sql-createindex.html"],
"topic": "postgresql",
"found": true,
"researched": false,
"content_type": "methodology"
}
],
"processing_time_ms": 62
}Limits
- Maximum 100 questions per request
- Each question follows the same validation rules as
/ask - Questions that fail validation are returned with
nullanswer
/search Search the Q&A database for questions and answers. Returns ranked results based on relevance to your query.
Query Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| q | string | Yes | - | Search query |
| domain | string | No | all | Domain filter (e.g., "python", "aws") |
| limit | number | No | 10 | Maximum results to return (1-50) |
Example Request
curl "https://agentskb-api.agentskb.com/api/free/search?q=postgresql&domain=database&limit=5"Example Response
{
"query": "postgresql",
"results": [
{
"id": "qa_001",
"question": "What is PostgreSQL and what are its main features?",
"answer": "PostgreSQL is a powerful, open-source object-relational database system with over 35 years of active development...",
"domain": "postgresql",
"confidence": 0.98,
"tier": "GOLD",
"similarity": 0.95
},
{
"id": "qa_045",
"question": "How do I create an index in PostgreSQL?",
"answer": "To create an index in PostgreSQL, use the CREATE INDEX command. Here's the basic syntax...",
"domain": "postgresql",
"confidence": 0.94,
"tier": "SILVER",
"similarity": 0.87
},
{
"id": "qa_123",
"question": "What is the difference between PostgreSQL and MySQL?",
"answer": "PostgreSQL and MySQL are both popular relational databases, but they have key differences...",
"domain": "postgresql",
"confidence": 0.92,
"tier": "GOLD",
"similarity": 0.82
}
],
"meta": {
"total": 48,
"returned": 3,
"search_time_ms": 28
}
}Code Examples
Ask a Question
# Ask a question
curl "https://agentskb-api.agentskb.com/api/free/ask" \
-H "Content-Type: application/json" \
-d '{"question":"What is FastAPI?"}'
# Ask with domain filter
curl "https://agentskb-api.agentskb.com/api/free/ask" \
-H "Content-Type: application/json" \
-d '{"question":"How to use async in Python?","domain":"python"}'Search Questions
# Search for questions
curl "https://agentskb-api.agentskb.com/api/free/search?q=postgresql&limit=5"
# Search with domain filter
curl "https://agentskb-api.agentskb.com/api/free/search?q=async&domain=python&limit=3"MCP Integration
Status
AgentsKB integrates with Claude Desktop via the Model Context Protocol (MCP), providing direct access to Q&A within Claude conversations.
Available MCP Tools
| Tool | Description | Parameters |
|---|---|---|
| ask_question | Get researched answers to technical questions | question (required), domain, tier |
| search_questions | Search Q&A database | query (required), limit, domain |
| get_stats | Get knowledge base statistics | none |
Configuration
Add AgentsKB to your Claude Desktop MCP configuration:
{
"mcpServers": {
"agentskb": {
"command": "stdio",
"args": [],
"env": {},
"url": "https://mcp.agentskb.com/mcp-kb",
"transport": "Streamable HTTP",
"protocolVersion": "MCP 2025-03-26",
"capabilities": {
"tools": {
"listChanged": true
}
}
}
}
}Claude Desktop Config Location
| Platform | Config Path |
|---|---|
| macOS | ~/Library/Application Support/Claude/claude_desktop_config.json |
| Windows | %APPDATA%\Claude\claude_desktop_config.json |
| Linux | ~/.config/Claude/claude_desktop_config.json |
Note
"Ask AgentsKB: What is Docker and how does it work?" HTTP Status Codes
| Code | Status | Description |
|---|---|---|
| 200 | OK | Request successful |
| 400 | Bad Request | Missing or invalid required parameters |
| 404 | Not Found | Endpoint doesn't exist |
| 500 | Internal Server Error | Server-side error occurred |
Error Response Format
All errors follow a consistent JSON format with an error object containing a code and message:
{
"error": {
"code": "MISSING_QUESTION",
"message": "Question field is required"
},
"meta": {
"responseTimeMs": 5
}
}Real Response Examples
Examples from the production API showing real data and response structures.
Ask Question Success
Ask about FastAPI and receive a researched answer with confidence score
{
"question": "What is FastAPI?",
"answer": {
"text": "FastAPI is a modern, high-performance web framework for building APIs with Python 3.7+ based on standard Python type hints. Key features:",
"confidence": 0.96,
"tier": "GOLD",
"sources": ["https://fastapi.tiangolo.com/"]
},
"meta": {
"domain": "python",
"search_time_ms": 42
}
} Search Questions Success
Search for 'postgresql' questions and get ranked results
{
"query": "postgresql",
"results": [
{
"id": "qa_001",
"question": "What is PostgreSQL?",
"similarity": 0.95,
"tier": "GOLD"
},
{
"id": "qa_045",
"question": "How to create an index?",
"similarity": 0.87,
"tier": "SILVER"
}
],
"meta": {
"total": 48,
"returned": 2,
"search_time_ms": 28
}
} Stats Success
Get comprehensive knowledge base statistics
{
"total_questions": 39827,
"domains": 272,
"avg_confidence": 99,
"domains_list": ["python", "typescript", "aws", "kubernetes", "postgresql"],
"domain_breakdown": {
"python": 89,
"typescript": 76,
"aws": 65
}
} Lockfiles (Advanced)
Pin knowledge versions for reproducible builds
For teams that need version-controlled knowledge, our CLI can generate lockfiles that pin exact answers by SHA-256 hash.
# Install CLI
npm install -g @agentskb/cli
# Initialize manifest (list questions your project needs)
agentskb init
# Generate lockfile (pins current answers)
agentskb lock
# Verify integrity
agentskb verifySame lockfile = same answers, every time. Useful for auditing and compliance.
Need Help?
- Contact us for support, feature requests, or to contribute Q&As