# Smartlead

**Canonical:** https://apis.io/providers/smartlead-ai/  
**Website:** https://www.smartlead.ai  
**APIs profiled:** 11

Smartlead is cold email infrastructure for outbound sales and lead generation, focused on inbox deliverability through unlimited mailbox rotation, automated warmup, and a unified master inbox. Smartlead publishes an OpenAPI 3.1.1 contract with 98 operations at server.smartlead.ai/api/v1 covering campaigns, sequences, leads and lead lists, sender mailboxes and warmup, the master inbox, webhooks, analytics, Smart Delivery placement testing, Smart Senders and agency client management, authenticated with an API key passed as a query parameter. It also ships an unusually forward agent surface for its size — an A2A agent card, a published Agent Skill, a remote documentation MCP server, llms.txt, and a first-party CLI — alongside a 13-event signed webhook catalog.

## Kin Score — 63.6 / 100 (strong)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 63.6).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 66.2 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 42.1 |
| Developer Ergonomics | 71.4 |
| Commercial Clarity | 85.5 |
| Access Clarity | 85.5 |

## Agent readiness — 38.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | flavored |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Paid · Free trial · Self-serve signup — onboarding: self-serve, pricing: paid, trial: yes (confidence: high).

## APIs (11)

- **SmartLead API** — The complete SmartLead REST API as published by SmartLead — OpenAPI 3.1.1, 85 paths and 98 operations across campaigns, sequences, leads and lead lists, email accounts and warmu...
- **Smartlead Campaigns API** — REST endpoints to create, list, fetch, update, schedule, pause, resume, and delete email campaigns, plus manage sequences, A/B variants, and sender account assignments inside a ...
- **Smartlead Leads API** — Endpoints to add leads to a campaign in bulk, fetch leads, update lead status (interested, replied, unsubscribed), search leads globally, and manage lead categories and lead lists.
- **Smartlead Email Accounts API** — Endpoints to add, list, update, and remove sender mailboxes (SMTP, Gmail, Outlook), assign them to campaigns, and track per-account sending limits and warmup state.
- **Smartlead Email Warmup API** — Endpoints for managing Smartlead's deliverability warmup engine — enabling warmup per mailbox, configuring ramp settings, and reading warmup reputation and stats.
- **Smartlead Webhooks API** — CRUD endpoints for user, client and campaign-scoped webhook subscriptions covering lead events (sent, opened, clicked, replied, bounced, unsubscribed) used to stream Smartlead a...
- **Smartlead Analytics API** — Endpoints for campaign and account-level analytics — sent, open, click, reply, bounce, and unsubscribe metrics aggregated over time ranges.
- **Smartlead Client Management API** — Endpoints for agency users to provision and manage white-labeled client accounts, mint and revoke per-client API keys, and meter usage across multiple end customers.
- **Smartlead Campaign Statistics API** — Retrieve campaign performance metrics.
- **Smartlead Campaigns API** — Manage Smartlead email campaigns.
- **SmartLead Documentation MCP Server** — SmartLead's remote Model Context Protocol server. tools/list answers anonymously with three documentation tools (search, a read-only docs filesystem, feedback). It exposes the S...

## MCP servers (1)

- **Smartlead MCP Server** — SmartLead operates a remote MCP server on its documentation/API host. `tools/list` answered anonymously over Streamable HTTP (SSE), so the tool set below is the server's real, l...

## Agentic access (1)

- **Smartlead Ai Agentic Access** — 112 operations · 54 acting · 1 human-in-the-loop

## Security (2)

- **Smartlead Ai Authentication** — apiKey · 1 scheme
- **Smartlead Ai Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Smartlead Ai Plans Pricing**

## Tags

Cold Email, Outbound, Sales, Deliverability, Email Warm-up, Automation, Sequences

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/smartlead-ai/). Scores are computed from the provider's own public artifacts under a published rubric.