Seamless AI API
Seamless exposes a self-serve REST API on every plan, including free, documented at docs.seamless.ai. Keys generate from account settings and calls draw from the plan's credit pool, so bulk enrichment burns credits fast. Enrichment is async only, returning via webhook or polling.
Frequently asked questions
Seamless AI scores A on the API Report Card. Seamless exposes a self-serve REST API on every plan, including free, documented at docs.seamless.ai. Keys generate from account settings and calls draw from the plan's credit pool, so bulk enrichment burns credits fast. Enrichment is async only, returning via webhook or polling.
Seamless AI has a workable official integration path. Most engineering teams can build against it directly. Open API: self-serve, documented, with SDKs
Seamless.AI is a B2B sales intelligence and prospecting platform that markets itself as a 'real-time search engine for B2B sales leads,' using AI to discover, verify, and enrich contact records (emails, direct dials, mobile numbers, titles, firmographics, technographics) on demand.
Vertical: B2B sales intelligence / contact data / outbound prospecting (horizontal SaaS, not industry-specific). Reps search Seamless's real-time contact engine by title, seniority, department, company size, industry, location, and technographic filters, then export verified emails and mobile numbers directly to CSV, CRM, or sequence tools.
Seamless reports a large install base across SMB sales and holds thousands of reviews on G2, Capterra, and Trustpilot, putting it firmly in the second tier of sales intelligence platforms behind ZoomInfo and Apollo but ahead of long-tail tools like UpLead and RocketReach.
Yes, for SMB and mid-market sales orgs running prospecting on Seamless, it is the system of record for the entire top-of-funnel dataset: the full prospect database with custom lists and saved searches, every contact revealed (emails, mobile numbers, titles, firmographics) with credit-spend history, every enrichment call, CRM sync mappings to Salesforce/HubSpot/Pipedrive, sequence/cadence state and email/dial engagement (for Engagement Hub customers), AI Agent execution logs, and the credit ledger that drives all access.
Founded in 2015 by Brandon Bornancin in Columbus, OH. Bootstrapped through the early years, then went public via direct listing on the OTC markets (ticker SMAI).
API calls consume the same credits as UI lookups, bulk enrichment jobs burn through monthly credit pools quickly and trigger upgrade prompts. Default 60 req/min per-endpoint rate limit is restrictive for high-volume enrichment and bulk sync jobs. Full sourced list under Sources below.
Common alternatives include ZoomInfo, Apollo.io, Lusha, Cognism, RocketReach, LeadIQ. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.