Seamless.AI

Seamless.AI (now branded Seamless) is a sales-prospecting platform built around a contact and company database, a Chrome extension, lists, and outreach features. Its public API at docs.seamless.ai supports Search companies/contacts and Research (enrichment) with polling or webhook delivery, API-key or OAuth authentication, v1 and v2 references covering contacts, companies, templates, tasks, campaigns, email and call logging, OpenAPI specs in YAML and JSON, a Postman collection, and an MCP server with 57 tools documented for Claude Desktop, Cursor, VS Code and ChatGPT.

Documentation is strong for a vendor of this type: an llms.txt index, use-case guides (CRM sync, lead-list enrichment, webhooks, agent workflows) and a rate-limits-and-credits page (60 requests/minute per endpoint, shared across the org; search costs 1 credit per 10 results, research costs 1 credit per record, polling free). Gaps noted by a third-party API report are thin webhook-signature documentation and restrictive 60/min limits for bulk jobs; no official language SDKs were found.

Accessibility evidence conflicts. The docs say the Public API menu appears only if the account has Public API access. A third-party API report card says the API is self-serve on all plans including free, whereas other third-party pricing articles say API access is an Enterprise add-on and that the public pricing page now shows only Free, Pro (contact sales) and Enterprise. Because the primary docs do not state plan eligibility, accessibility is scored conservatively. Reputation is weak on Trustpilot (1.2/5, 311 reviews; auto-renewal, cancellation and billing complaints, no replies from the vendor) while G2 is about 4.4/5, with contact-data accuracy rated 7.6/10 and reviewers citing 15-25% bounce rates. The official status page is seamlessaistatus.com; Pingoru recorded no incidents in 90 days across 3 services.