AgentSearch: Sub-200ms Independent Search API for AI Agents
Search APIs for AI agents have high latency (1.2s median) blocking token generation and tool calls, plus duplicate results from Google/Bing wrappers limiting parallel queries.
Is the problem real?
Search APIs for AI agents suffer from high latency and redundant results from Google/Bing wrappers.
EVIDENCE
Show HN: Seltz – The fastest, high quality, search API for AI agents
When you run tens or hundreds of queries in parallel, every millisecond of tail latency compounds.
postShow HN: Seltz – The fastest, high quality, search API for AI agents
Show HN: Seltz – The fastest, high quality, search API for AI agents
The median was around 1.2s; we came in around 166ms.
commentMore on latency and search: We benchmark against 10 other search APIs on fresh news queries. The median was around 1.2s; we came in around 166ms and scored highest on answer accuracy (89% vs 84% for the next cluster). Latency matters because agents loop. A 1.2s first call eats the budget for follow-ups — you get one shot at framing the query. At sub-250ms the agent can actually search, read, reformulate, and search again. Measuring this stuff carefully is something I've been at for a while. My ECIR 2019 paper (linked below) was an exhaustive study of 11 index compression methods across 5 query processing algorithms on standard collections — the codebase became PISA, which a lot of IR folks still use for research. Almost ten years later, the workload has changed completely (agents, not humans), but the benchmarking discipline is the same. ECIR 2019 paper: https://www.antoniomallia.it/uploads/ECIR19c.pdf (https://www.antoniomallia.it/uploads/ECIR19c.pdf) Pisa Engine: https://github.com/pisa-engine/pisa (https://github.com/pisa-engine/pisa) Full methodology and charts for Seltz: https://seltz.ai/blog/why-we-built-seltz (https://seltz.ai/blog/why-we-built-seltz)
Who feels this pain?
TARGET USERS
Builders of production AI agents who integrate search tools for dynamic querying and need low-latency results to enable efficient looping and parallel operations.
Context
Current Workarounds
Where's the gap?
EXISTING SOLUTION GAPS
OPPORTUNITY & VALUE
Single detailed benchmark post with 10 APIs tested; complaints not highly repeated but precise and data-backed.
Independent index avoids Google/Bing duplicates with agent-specific low-latency optimization.
Independent search API delivering <200ms latency, deduplicated high-quality results optimized for AI agent workflows.
How does it make money?
MONETIZATION
Model
Developers benchmark 10 APIs and complain about latency blocking production agents on critical path; they already pay for SerpAPI/Tavily despite gaps, valuing speed for scaling loops.
How do you ship it?
MVP PLAN
“Sub-200ms search results powering fast AI agent loops in 6 weeks.”
Independent search API delivering <200ms latency, deduplicated high-quality results optimized for AI agent workflows.
Core Features
Weekly Roadmap
- •Set up crawler for independent web index (10k pages)
- •Implement basic ranking/relevance scoring
- •Build query API with latency monitoring
- •Add result deduplication logic
- •Format responses for LLM parsing (titles, snippets, URLs)
- •Parallel query endpoint for agent testing
- •Integrate Stripe for pay-per-query
- •Add dashboard for query analytics/latency
- •Recruit AI agent devs from HN/Reddit for beta
- •Publish docs + SDKs (Python/JS)
- •Post benchmark vs competitors on HN
- •Track query volume and conversions
Benchmark posts on HN/r/LocalLLaMA/r/MachineLearning targeting LangChain/autogen users, free tier for viral dev adoption.
RISKS & ASSUMPTIONS
Top Risks
Building an independent index competitive with Google/Bing requires massive crawling resources and may lag on breaking news.
Achieving <200ms p95 under parallel agent loads demands optimized infra, with tail latency compounding risks.
Complaints from single benchmark post; broader validation needed across agent builders.
Ecosystem integrations favor SerpAPI/Tavily, slowing switch despite benchmarks.
Should you build it?
Run an Investment Memo to get a structured Go / No-Go verdict, competitor landscape, unit economics, and a 90-day validation roadmap for this opportunity.
Generate an investment memoWhat this score means
This idea scores in the upper-middle range of opportunities surfaced by MonetScope, with a validation sub-score of 5/10 against 4 independently sourced evidence signals. A "promising" rating usually indicates a real pain has been detected and discussed in the open, but the pipeline did not find enough signal to flag it as urgent or high-frequency. These opportunities can still produce excellent businesses — they often correspond to "boring" problems that established players have ignored — but the founder should expect a longer customer-development cycle to confirm willingness to pay.
Why this matters for Other founders
It sits at the intersection of "agents", "ai-powered", "api", which makes it relevant to a specific subset of founders rather than a generic horizontal opportunity. Opportunities in this category typically reward founders who can describe the pain in the user's own language — both because that's the basis of effective marketing, and because it's the strongest signal that the founder has done the upfront listening. The MonetScope pipeline surfaces this category alongside other other signals, which is why it appears here rather than in a generic "trending ideas" feed.
Scores are derived from real forum discussions across Reddit, Hacker News and X, weighted by evidence volume and signal quality. How scoring works
Frequently asked questions
Is "AgentSearch: Sub-200ms Independent Search API for AI Agents" a real validated startup idea or just an AI-generated suggestion?
MonetScope does not generate ideas from a language model's imagination. Every opportunity on this site is anchored to specific source posts and comments from real public discussions — typically on Reddit, Hacker News, or X — where actual users describe the pain in their own words. The AI's role is structuring, scoring, and grouping those signals into a navigable opportunity, not inventing the problem.
How recent is the underlying data for agents?
MonetScope's spider pipeline runs continuously and surfaces opportunities as new evidence accumulates. The "Updated" date in the header reflects the most recent re-scoring of this specific opportunity. Most other opportunities visible in the public catalog draw from discussions in the last 30-60 days; older signals are de-prioritized because user pain shifts faster than most founders assume.
What's the difference between "overall score" and "validation score"?
Overall score is a composite across six dimensions — pain, urgency, willingness to pay, market size, defensibility, and execution ease — designed to give a single number for triage. Validation score is narrower: it asks "how cleanly does the same signal repeat across independent sources?" An opportunity can score high on overall but lower on validation when one or two large discussions dominate the evidence; conversely, validation can be high on a smaller-overall idea where the signal is consistent but the addressable market is modest.