--- title: "Sourcing APIs: 11 reviewed | ONEGTMLAB" description: "Sourcing APIs: 11 tools with their API read end to end. Cost per call, plans with the billing basis, rate limits, keys and MCP." canonical: https://www.onegtmlab.dev/tool-directory/sourcing --- # Sourcing APIs: 11 reviewed | ONEGTMLAB [](/) [ Book a call ](/book) Category # Sourcing APIs Find people and companies to sell to: search by title, company, size and location. 11 tools, each with its API read end to end from its own pricing page and docs. - **11**tools reviewed - **10**official MCP servers - **6**with a free plan Find a Sourcing tool ## Every tool in Sourcing Search and filter within this category, or sort by entry price. Search tools SortA to ZCheapest entry price Pricing modelCredits9Per seat1Flat monthly plans1 Plan and accessFree plan6API on the free plan4Official MCP server10 Showing 11 of 11 tools - [![](/_astro/ai-ark.BE60pifs_ZLFGOH.webp)AI ArkSourcingCredit-based B2B data API over 400M+ people and 70M+ companies: people/company search (incl.Free planAPI on free planOfficial MCPCreditsFrom $39.17/mo billed annuallyReview →](/tool-directory/sourcing/ai-ark) - [![](/_astro/apollo.DNg6-7d3.svg)ApolloSourcingAll-in-one sales platform whose API exposes a 240M-contact / 30M-company database (search, person and company enrichment, job postings, news) plus…Free planAPI on free planOfficial MCPPer seatFrom $49/mo billed annuallyReview →](/tool-directory/sourcing/apollo-io) - [![](/_astro/blitz-api.Bf9EP17n_2kGkQt.webp)BlitzAPISourcingFlat-fee B2B data API (550M+ profiles, 65M+ companies, 65M+ verified emails, 45M+ US phones, 100M+ job postings): company/people search, employee…Official MCPFlat monthly plansFrom $99/mo billed monthlyReview →](/tool-directory/sourcing/blitz-api) - [![](/_astro/cognism.BVFvKHsp_oE7j7.webp)CognismSourcingB2B sales-intelligence database (strong in Europe/UK) with phone-verified mobiles, DNC screening, Bombora intent and job-change/funding/hiring…Official MCPCreditsNo published entry priceReview →](/tool-directory/sourcing/cognism) - [![](/_astro/explorium.D7Wqtnux.svg)ExploriumSourcingAgent-first B2B data API (AgentSource v2): match and fetch businesses and prospects, 25+ enrichment bundles (firmographics, technographics, Bombora…Official MCPCreditsNo published entry priceReview →](/tool-directory/sourcing/explorium) - [![](/_astro/lusha.BjP45Jap_Z28Sj1Y.webp)LushaSourcingB2B contact and company data API (about 515.5M contacts, 29M companies) for search-then-reveal email and phone enrichment, ICP prospecting, signals,…Free planAPI on free planOfficial MCPCreditsFrom $37.45/mo billed annuallyReview →](/tool-directory/sourcing/lusha) - [![](/_astro/ocean-io.J2zU7SDe.svg)Ocean.ioSourcingLookalike-first B2B data API over an 85M+ company index: lookalike company and people search (v3), company/person enrichment (single and webhook…Official MCPCreditsFrom $250/mo billed annuallyReview →](/tool-directory/sourcing/ocean-io) - [![](/_astro/prospeo.deQVoOYK_2h4bGL.webp)ProspeoSourcingB2B people and company database with a filter-rich Search API (25 results per credit) and Enrich API for verified work email (1 credit) and mobile…Free planOfficial MCPCreditsFrom $37/mo billed annuallyReview →](/tool-directory/sourcing/prospeo) - [![](/_astro/rocketreach.rwx2rnfO_Z15BIDG.webp)RocketReachSourcingContact database API (700M+ professionals, 60M+ companies) for people/company search, email and phone lookup, bulk lookup with webhooks, email…Official MCPCreditsFrom $33/mo billed annuallyReview →](/tool-directory/sourcing/rocketreach) - [![](/_astro/uplead.Cip5k3MJ_Z12KwB8.webp)UpLeadSourcingSelf-serve B2B contact and company database with real-time email verification; simple REST API (v2) for company, person and combined enrichment plus…Free planCreditsFrom $74/mo billed annuallyReview →](/tool-directory/sourcing/uplead) - [![](/_astro/zoominfo.DrLsU31p.svg)ZoomInfoSourcingLargest US-centric B2B contact/company database (100M+ companies, 500M+ professionals, 50+ signals) now sold headless as 'GTM AI by ZoomInfo': OAuth…Free planAPI on free planOfficial MCPCreditsNo published entry priceReview →](/tool-directory/sourcing/zoominfo) ## Guides and comparisons for this category [How-to guideHow to find a person's work email addressRead the guide →](/tool-directory/how-to/find-work-email)[How-to guideHow to verify email addresses before you sendRead the guide →](/tool-directory/how-to/verify-emails)[ComparisonApollo vs AttioCompare them →](/tool-directory/compare/apollo-vs-attio)[ComparisonApollo vs People Data LabsCompare them →](/tool-directory/compare/apollo-vs-people-data-labs) ## Other categories [Enrichment](/tool-directory/enrichment)[Verification](/tool-directory/verification)[Signals](/tool-directory/signals)[Research and scraping](/tool-directory/research-and-scraping)[Email sending](/tool-directory/sending)[LinkedIn outreach](/tool-directory/linkedin-outreach)[CRM](/tool-directory/crm)[Data platforms](/tool-directory/data-platforms) ## Want it built for you? 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