Improved
AI Sandbox: Email Verification, File Uploads & Newer Models
4 days ago by ReadMe API
AI Sandbox Upgrade
The AI Sandbox in your developer portal can now work with your data end to end - verify email lists, upload files, and reach the full Signal API through plain-language chat.
What's new
- Email verification in chat - paste or drag in a list of addresses and the assistant checks deliverability in a single step, then gives you a downloadable CSV
- File uploads - drop a CSV, TXT, or JSON file straight into the conversation and the assistant reads and acts on it
- Downloads everywhere - export any table as CSV, any tool result as JSON, or the whole response as Markdown
- Full API coverage - company and contact search, buyer intent (topics, contacts, companies, and timelines), signal stats and history, and account tools are all available in-chat
- Newer models - GPT-5.6 is now the default, with visible step-by-step reasoning on multi-step questions
Also new for MCP
The Autobound MCP server now includes verifyEmail and verifyEmailBulk tools, so any MCP-connected assistant can check email deliverability right alongside enrichment and buyer intent.
Get started
→ Developer Hub
→ Email Verification docs
Available on all plans. Email verifications cost 1 credit each; unknowns are free.