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Openmart

Openmart

100

Local business search API covering 30M+ US, CA, and AU businesses — returns 40+ data points per listing including decision-maker contacts, tech stacks, and revenue estimates.

OpenAPI SpecAPI KeyFreemiumJSONBot Blocking: NoneNo CClocal-businessbusiness-searchlead-generationdecision-makerstech-stackdata-enrichmentb2b-datagoogle-maps

Pros

  • + Rich data per business (40+ fields) — address, phone, email, ratings, hours, decision-maker contacts, tech stack, revenue, and social profiles in a single JSON response
  • + Simple REST API with x-api-key auth and FastAPI-generated OpenAPI spec at /openapi.json — agents can auto-discover endpoints and generate typed clients
  • + Covers local/SMB businesses specifically (30M+ in US/CA/AU), a niche most B2B data providers underserve, making it ideal for agents targeting local business outreach

Cons

  • - Credit-based pricing across all tiers — agents must track credit consumption, and enriched fields (owner contacts, tech stack) cost more than basic lookups
  • - Batch people-lookup endpoint is async (poll for status), adding complexity for agents that expect synchronous responses

Integration

example.py
import requests
headers = {    "x-api-key": "YOUR_API_KEY",    "Content-Type": "application/json"}
# Search for local businessesresp = requests.post(    "https://api.openmart.ai/api/v1/search",    headers=headers,    json={        "query": "plumbers",        "location": [{"city": "Los Angeles", "state": "CA"}],        "limit": 100    })businesses = resp.json()for biz in businesses.get("results", []):    print(biz["name"], biz.get("phone"), biz.get("email"))
Documentation Website

Details

Category
Company Search
Pricing
Freemium
Free Tier
Free plan ($0) includes monthly credit allowance for testing. Paid plans: Starter $149/mo, Pro $299/mo, Scale $999/mo, Enterprise custom.
Rate Limit
100 results per request (pagination supported). Plan-specific rate limits — contact Openmart for details.
Verified
2026-03-31

Score Breakdown

Base +50
OpenAPI Spec (Yes) +15
Auth Complexity (API Key) +10
Response Format (JSON) +10
Bot Blocking (None) +10
No Credit Card (Yes) +5
Completely Free (No) 0
Total 100

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