# Kairon > Find qualified leads that are ready to buy. Send them a message worth reading. Kairon is an outbound tool that runs inside the agent the operator already uses (Claude, ChatGPT, Cursor, or their own). It is a hosted MCP server, so there is nothing to install: the agent gains the ability to search for accounts, qualify them against an ideal customer profile, enrich the people behind them, and run LinkedIn sequences from the operator’s own seat. Autopilot is the default. Every normal send is scheduled with time to review or cancel it, and manual mode waits for approval. LinkedIn and email are live today. Send email from each person’s own Gmail or Outlook ($10 a month per mailbox), bring your own Instantly workspace at no extra Kairon cost, or pay separately for email sending managed by Kairon. WhatsApp is being built. ## When to use Kairon Use it when the job is B2B outbound the operator would otherwise do by hand: - Find the people or companies that match a buying signal (hiring a role, a funding round, a post they reacted to, a Sales Navigator search) and keep a list of them. - Judge a list against an ideal customer profile before anyone is written to, with the reason for each verdict. - Run a LinkedIn or email sequence from the operator’s own seat: invite, wait for the accept, message, stop on reply. - Read what came back: replies, accepted invites, the pipeline. Do not use it to send from an account the operator does not own, to reach people outside a B2B context, or as a data broker: every write is scheduled on the operator’s seat, under LinkedIn’s daily limits, and stops on a reply. ## How to call it - MCP endpoint: `https://app.heykairon.com/mcp` (Streamable HTTP, JSON-RPC over POST; a GET is refused with a JSON error). - Authorization: OAuth 2.1 with PKCE and dynamic client registration. Metadata at `https://app.heykairon.com/.well-known/oauth-authorization-server`; the protected-resource document at `https://app.heykairon.com/.well-known/oauth-protected-resource`. Scopes: `openid profile email offline_access`. - Every tool, with its arguments and an example, is on the [MCP page](https://heykairon.com/mcp) and in [mcp-tools.json](https://heykairon.com/mcp-tools.json). The server card a directory reads: `https://app.heykairon.com/.well-known/mcp/server-card.json`; the catalog entry: [ard.json](https://heykairon.com/.well-known/ard.json). - Listed in the official MCP registry as `com.heykairon/kairon`: [the registry entry](https://registry.modelcontextprotocol.io/v0/servers/com.heykairon%2Fkairon/versions/latest). Also listed [on Smithery](https://smithery.ai/servers/m-r2ox/kairon). - The whole flow, step by step, with every URL: [auth.md](https://heykairon.com/auth.md). - The REST API behind the app, for an API-key integration: OpenAPI at `https://app.heykairon.com/docs-json` (also `https://heykairon.com/openapi.json`), browsable at `https://app.heykairon.com/docs`, listed in [api-catalog](https://heykairon.com/.well-known/api-catalog) (RFC 9727). The MCP endpoint is the door for a model; the REST API is the door for a system. - Every door on one page: [Developers](https://heykairon.com/developers). - Read the playbook (`skill_get`) before the first tool call of a job; read the product reference (`doc_get`) before explaining how Kairon behaves. - From a terminal: `npx @kairon/cli login`, then `kairon `. The [CLI page](https://heykairon.com/cli) lists every command; they are the same calls, from a script instead of a model. ## The product - [Home](https://heykairon.com/home.md): the full argument, in markdown (also at /index.md) - [Pricing, in markdown](https://heykairon.com/pricing.md) and [the FAQ, in markdown](https://heykairon.com/faq.md): the same content as the pages, for a reader that would rather not parse HTML. Every post below is also at its URL plus `.md`. - [LinkedIn MCP](https://heykairon.com/linkedin-mcp): what an operator can ask once LinkedIn is inside Claude or ChatGPT, and how hosted Kairon compares with the open-source LinkedIn MCP servers - [MCP server](https://heykairon.com/mcp): every tool, with arguments and examples - [Tool catalogue](https://heykairon.com/mcp-tools.json): the same catalogue as JSON - [CLI](https://heykairon.com/cli): the command surface, derived from the same catalogue - [Webhooks](https://heykairon.com/webhooks.md): how to receive Kairon's signed webhook events: body, headers, signature check, retries - [Pricing](https://heykairon.com/pricing): the plans, with what each one includes - [Funding radar](https://heykairon.com/funding-radar): recently funded startups in the US (in Spanish, Latin America's at https://heykairon.com/es/funding-radar), updated weekly: what the money is for, who to write to and until when. Free; the whole list as a CSV for an email - [Sign up](https://app.heykairon.com): the app. Signing up requests a 7-day trial; accounts are let in from a waitlist, so an agent cannot create one on its own. ## The company - [About](https://heykairon.com/about): who builds Kairon (Luciano Trujillo and Mario León Rojas), where it is registered, and why - [Contact](https://heykairon.com/contact): how to reach a person, and what to expect back - [Privacy](https://heykairon.com/privacy): what is collected, who processes it, how to have it deleted - [Terms](https://heykairon.com/terms): the terms of service: plans and payment, acceptable use, liability - [security.txt](https://heykairon.com/.well-known/security.txt): how to report a security problem ## Comparisons - [Kairon vs Lemlist](https://heykairon.com/kairon-vs-lemlist): what each one does, side by side - [Kairon vs HeyReach](https://heykairon.com/kairon-vs-heyreach): what each one does, side by side - [Kairon vs Apollo](https://heykairon.com/kairon-vs-apollo): what each one does, side by side - [Kairon vs Dripify](https://heykairon.com/kairon-vs-dripify): what each one does, side by side - [Kairon vs Origami](https://heykairon.com/kairon-vs-origami): what each one does, side by side - [Kairon vs Gojiberry AI](https://heykairon.com/kairon-vs-gojiberry): what each one does, side by side - [Kairon vs Trigify](https://heykairon.com/kairon-vs-trigify): what each one does, side by side - [Kairon vs Waalaxy](https://heykairon.com/kairon-vs-waalaxy): what each one does, side by side - [Kairon vs Linked Helper](https://heykairon.com/kairon-vs-linked-helper): what each one does, side by side ## Writing - [Hunter.io pricing in 2026: plans, credits and what one email costs](https://heykairon.com/blog/hunter-io-pricing): Hunter Starter costs $49 a month for 2,000 credits, or $408 a year. We priced one found email on each plan, next to Kairon. - [RocketReach pricing in 2026: plans, exports and what one email costs](https://heykairon.com/blog/rocketreach-pricing): RocketReach Essentials costs $49 a month for 100 exports, or $329 billed yearly. We priced one email on each plan, next to Kairon. - [Lusha pricing in 2026: plans, credits and what one email costs](https://heykairon.com/blog/lusha-pricing): Lusha Starter costs $49.90 a month for 400 credits, or $37.45 a month billed yearly. We priced one email and one phone, next to Kairon. - [Apollo pricing in 2026: plans, credits and what one email costs](https://heykairon.com/blog/apollo-pricing): Apollo Basic costs $65 a seat a month, or $49 billed yearly. We turned its credits into a price per email and per phone, next to Kairon’s price per find. - [Clay pricing in 2026: plans, credits and what one email costs](https://heykairon.com/blog/clay-pricing): Clay Launch costs $185 a month or $167 billed yearly. We turned its Data Credits into a price per email and per phone, next to Kairon’s price per find. - [LinkedIn Sales Navigator Pricing in 2026: What It Costs, and What It Buys You](https://heykairon.com/blog/linkedin-sales-navigator-pricing): Core costs US$119.99 a month, Advanced US$159.99. We also checked which plan 74 seats connected to Kairon pay for, and whether it gets more invites accepted. - [LinkedIn Premium vs. Sales Navigator: What Actually Restricts an Account](https://heykairon.com/blog/linkedin-premium-vs-sales-navigator): LinkedIn publishes no invite or search caps for either tier. Our own account got rate-limited under every daily cap we set — this is why.