Product · Search API
Federated web search for AI applications
One query dispatched to 17 backends in parallel. Results ranked by 8 independent signals — BM25, semantic similarity, temporal freshness, source authority, and more. Returns structured JSON with citations for AI retrieval workflows.
17+
Search backends
8
Ranking signals
12
MCP tools
60/min
Free tier rate
17+ Search Backends
All backends are queried in parallel. Circuit breakers handle failures transparently. Results arrive from the fastest responding backends first.
DuckDuckGo
General
Privacy-first, no tracking
Brave Search
General
Independent index, no Google dependency
Bing
General
Microsoft index, broad coverage
SearXNG
Meta-search
Privacy-focused metasearch aggregation
GitHub
Code
Code search + repositories
Reddit
Social
Community discussions + opinions
HackerNews
Tech
Developer community, tech news
StackOverflow
Q&A
Technical Q&A, code solutions
YouTube
Video
Video metadata + transcripts
ArXiv
Research
Academic papers, preprints
Wikipedia
Reference
Structured knowledge base
HyperFusion: 8-Signal Ranking
Results from all backends are merged and re-ranked using HyperFusion — 8 independent signals combined into a single relevance score. No single signal dominates; each is weighted by query intent and content type.
1
BM25 Relevance
Term-frequency scoring against the query
2
Semantic Similarity
Embedding-based meaning matching
3
Temporal Freshness
Exponential decay favoring recent content
4
Source Authority
Domain trust tiers + SSL/redirect penalties
5
Evidence Consensus
Cross-source factual agreement score
6
Content Diversity
Penalizes duplicate angles in results
7
Content Depth
Rewards thorough over shallow content
8
Query-Intent Match
Intent classification alignment
Quick Start
Get ranked search results in one API call:
cURLPOST /v1/search
curl -X POST https://api.fetchium.com/v1/search \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"query": "best async rust patterns 2025",
"backends": ["duckduckgo", "brave", "github"],
"max_results": 10,
"extract_content": true,
"token_budget": 4096
}'