Reply API – Your entire sales process in one workflow
Reply API Your entire sales process in one workflow
Plug Reply into your stack and automate everything
from prospect discovery to booked meeting.
Your team focuses on selling. The API handles the rest.
Try for free Read documentation
Who this is for
FOR DEVELOPERS & PRODUCT TEAMS
Embed Reply in your product or stack
FOR BUILDERS, OPERATORS & CONSULTANTS
Drive Reply without writing code yourself
For developers & product teams
Build on Reply using standard REST APIs, documented endpoints, OpenAPI specs, OAuth flows, webhooks, async jobs, and stable JSON error handling.
What you get
The full Reply platform, now in your stack
Contacts & Lists
Create, import, enrich, filter, and manage contacts and lists. Find missing emails and phone numbers. Sync contact data from any source in real time.
38
endpoints
Multichannel Sequences
Create sequences, manage steps and variants, assign email and LinkedIn accounts, add or remove contacts, and control the full campaign lifecycle.
59
endpoints
Unified Inbox
Access all replies, categorize threads, assign owners, send responses, and generate AI draft replies – without opening Reply.
17
endpoints
Email & LinkedIn Accounts
Connect Gmail and Office 365 via OAuth, manage IMAP/SMTP accounts, and control LinkedIn account settings – all programmatically.
30
endpoints
Reports & Analytics
Pull performance data across email, LinkedIn, calls, and tasks. Feed it directly into your dashboards – no CSV exports needed.
12
endpoints
Automation & Webhooks
Trigger workflows in real time with webhooks, manage background jobs, and control schedules and holiday calendars.
23
endpoints
Contact Enrichment
Enrich contacts by email or LinkedIn URL, find missing phone numbers, fill AI custom fields, and validate emails before sending – all automated.
7
endpoints
Email Templates
Create, manage, and render email templates from your own systems. Organize into shared folders and send test emails without touching the UI.
18
endpoints
Live Data Search
Search and discover prospects by department, industry, job title, location, and seniority – and pull results directly into your sequences via API.
9
endpoints
Real case studies from our customers
Influencers club
Sourcicle
Endorsed
Influencers.club
Strengthened its creator–brand matching platform by turning discovery into action – giving users a direct path from finding the right creators to managing full outreach campaigns.
Effortlessly manage contacts and streamline outreach
Create personalized, effective email campaigns
Optimize your campaign for better performance
Gain insights and optimize your campaigns with detailed analytics
Sourcicle
Transformed contact finding into a complete workflow, enabling users to move directly from fresh data to tailored email sequences.
Provide information about your campaign
Create personalized emails using variables for every lead.
Design sequences and add delays to automate outreach.
Connect mailboxes, set your signature, and add opt-out text
Track campaign results
Endorsed
Extended its candidate discovery tools with automated engagement, so recruiters can go from identifying top talent to building relationships -all in one place.
Build email sequences and craft emails directly in Endorsed with Reply API.
Easily schedule delays between steps to keep outreach natural
Add and manage leads in Endorsed
Define your campaign schedule and automate sending
Securely connect your mailbox to start sending with Reply API
For builders & operators
Connect Reply to any no-code tool or AI assistant through standard REST and MCP, without needing SDKs or custom development.
Drive Reply without writing code yourself
If you can describe what you want, you can build it. Reply API V3 is standard REST, which means every no-code tool you already use can call it — and any AI assistant that speaks MCP can drive it directly.
No SDK required, no developer required.
Plug into the tools you already use
Reply API works with every major automation platform — Zapier, Make, n8n, and similar — without a custom integration.
Drive Reply from your AI assistant
The Reply MCP server lets AI assistants – Claude, Cursor, or any MCP-aware client – connect directly to your Reply workspace.
What this unlocks
Implementation partners & agencies
Stand up custom Reply workflows for your clients without a developer on the team. Wire enrichment sources, CRMs, and notification channels into Reply directly through no-code or AI tools.
Non-technical founders
Treat your AI assistant as your integration engineer. Build the workflow once, run it forever – without learning OAuth, webhooks, or polling loops.
RevOps consultants
Automate the repetitive ops that scale with pipeline. Hand your assistant a scoped API key and let it work – across imports, list cleanup, schedule changes, and reporting.
Anyone living in Claude or Cursor
Your sales tooling is now in the same place you do everything else. No tab-switching, no context loss, no exporting CSVs to figure out what’s happening.
What you get
From tool to infrastructure
Reply API isn’t just access to endpoints – it’s a shift from managing a tool to orchestrating a workflow.
One workflow, not five tools
Stop stitching separate tools together with workarounds. V3 makes Reply part of your existing stack – no tab switching, no manual handoffs, no data gaps between systems.
Instant reaction to every event
A prospect replies – your CRM updates. A contact bounces – they’re removed from the list. A meeting is booked – your team gets notified. Real-time webhooks mean nothing slips through.
Full visibility across the board
Pull reporting data into your own dashboards. Monitor sequence performance, team activity, and deliverability from wherever your team already works – not just inside Reply.
Outreach on autopilot
Enrich contacts, add them to sequences, and trigger follow-ups automatically – based on data from your CRM, your product, or any external source. Less manual work at every step.
Scale without adding headcount
Automate the repetitive operations that grow linearly with your pipeline – imports, list management, task creation, account setup. Your team focuses on conversations, not admin.
Built for how you already work
Standard REST, works with any language, framework, or tool – Zapier, Make, custom code, or AI agents. No proprietary SDKs, no lock-in. Just a clean API that fits in anywhere.
Your AI SDR, fully programmable
AI Web Search
Trigger AI-driven prospect discovery. Jason finds and populates contacts for your sequences automatically.
AI SDR Sequences
Create sequences, configure autopilot, set approval modes, and manage intent signals programmatically.
Knowledge Base
Push product updates, case studies, and messaging into Jason’s knowledge base from your own systems.
Playbooks
Update how Jason handles different conversations and scenarios without logging into Reply.
Offers
Generate and manage the offers Jason presents to prospects. Tie them to your CRM data dynamically.
Pending Approvals
Build your own approval interface. Review and approve Jason’s drafts without touching Reply’s UI.
AI Insights
Pull AI-generated intelligence on any contact – talking points, signals, context – into your own tools.
Strategist
Trigger campaign optimization runs automatically. Let your system course-correct based on live data.
Security & access control
Reply new API was rebuilt around least-privilege access. The default behavior is restrictive; you opt into broader access deliberately.
Scoped API keys
Every API key carries explicit scopes. Create a read-only key for reporting, a write key for imports, and an admin key for your internal tools — all separately.
Multiple independent keys
Create as many API keys as you need with different privilege levels. Revoke one without affecting the rest of your integrations.
Enterprise-grade compliance
Reply is SOC 2 certified, GDPR compliant, and Google OAuth verified – your data stays safe at every layer.
Rate limits that scale with usage, not with the calendar
New version ends static monthly API quotas. Limits are now per-user, per-minute and per-hour — designed for real workloads.
Per-user quota designed to support high-frequency integrations without interruption.
100
requests/minute
Generous hourly cap that covers bulk operations, imports, and real-time automations.
3,000
requests/hour
Hit a limit? The response tells you exactly how long to wait – no guesswork, no broken integrations.
429
with Retry after