# Linkio > Linkio sells guest posts and link insertions on publisher sites. A self-serve buyer finds sites, orders, sends the article, checks the live link and pays each publisher directly; Linkio charges a fee per job. The buyer works in the app, with an AI agent, or both on the same account: an agent uses the MCP server or the HTTP API with an account key. On a managed account Linkio runs the work. Every page below is also an HTML page at the same path without `.md`. The full text of the guides in one file: https://www.linkio.com/llms-full.txt. The server's own rules for agents: https://www.linkio.com/docs/agents/rules.md. ## Docs home - [Linkio documentation](https://www.linkio.com/docs.md): Two ways to use Linkio: self-serve, where you run it in the app, with your AI agent, or both on the same account; or managed, where Linkio runs it. (for people and agents) ## Self-serve - [Buy links yourself](https://www.linkio.com/docs/self-serve.md): One journey from sign-up to a live, paid link. Each step shows the way in the app and the way with your AI agent, on the same account, so you can mix them. Your agent can also set you up from this page. (for people and agents) - [Start: account, brand and money](https://www.linkio.com/docs/self-serve/start.md): Sign up, put the account on self-serve billing, add your brand and pages, and choose how Linkio's fees are paid. (for people and agents) - [Who you pay, and for what](https://www.linkio.com/docs/self-serve/money.md): You pay each publisher directly. Linkio charges a fee per job, from prepaid money, a card or your own provider keys. (for people and agents) - [Find sites](https://www.linkio.com/docs/self-serve/find-sites.md): Search the site inventory, read a site's record and seller, choose a seller policy, and check a site before you buy it. (for people and agents) - [Order a placement](https://www.linkio.com/docs/self-serve/order.md): Open an order, add sites with a target page and anchor text, say who writes the article, and accept a time-limited link. (for people and agents) - [Linkio's article system](https://www.linkio.com/docs/self-serve/linkio-article.md): What runs when Linkio writes the article, what it costs, how long it takes, and how you follow it. (for people and agents) - [Send the article and track the placement](https://www.linkio.com/docs/self-serve/send-and-track.md): Check the article, preview and send it, talk to the publisher, and watch every placement without reading each one. (for people and agents) - [Check the live link and pay the publisher](https://www.linkio.com/docs/self-serve/qa-and-pay.md): Check the published article, pass or fail it, pay the publisher's invoice, and record the payment. (for people and agents) - [When a placement goes wrong](https://www.linkio.com/docs/self-serve/problems.md): A silent seller, a rejection, a price change or a removed link: close, reopen, move to another site, or change the seller. (for people and agents) - [Statuses and what you do now](https://www.linkio.com/docs/self-serve/statuses.md): Every placement status and activity event, what it means, and what you do next. (for people and agents) - [Troubleshooting: refusal codes](https://www.linkio.com/docs/self-serve/troubleshooting.md): Each refusal a buyer can get, what it means and what to do. (for people and agents) ## Self-serve: your agent - [Connect an agent](https://www.linkio.com/docs/agents.md): Connect Claude Code, Claude.ai, ChatGPT or any MCP client to your Linkio account. (for people and agents) - [Your first guest post in five minutes](https://www.linkio.com/docs/agents/first-job.md): The five-minute walk with an agent: connect, propose, find a site, order, send, and what it watches after. (for people and agents) - [The rules your agent gets](https://www.linkio.com/docs/agents/rules.md): The instructions Linkio's server gives every connected agent, word for word, and how an agent watches the account. (for people and agents) - [Sign up as an agent](https://www.linkio.com/docs/agents/signup.md): Create a Linkio account and its first key from the API, without a browser. (for agents and scripts) ## Managed - [Linkio does it for you](https://www.linkio.com/docs/managed.md): Linkio runs the work. What you receive, your jobs in the app and with your AI agent, how you pay, who to ask, and what a managed agent cannot do. (for people and agents) ## API reference - [API reference](https://www.linkio.com/docs/api.md): Authentication, scopes, refusals, the 402 bodies, the receipt, idempotency, the seller policy and report_issue. (for agents and scripts) - [Billing, limits and receipts](https://www.linkio.com/docs/api/billing.md): How a job is billed, the write fee, the read cap, the price before the click and what you paid for. (for agents and scripts) - [MCP tools for account callers](https://www.linkio.com/docs/api/tools.md): Every MCP tool an account key can see, with its scope and typed inputs, generated from the server. (for agents and scripts) - [HTTP routes an account can call](https://www.linkio.com/docs/api/routes.md): Every HTTP route an account can call: method, scope, whether it can answer 402, the receipt header and the tool that calls it. (for agents and scripts) ## Glossary - [Glossary](https://www.linkio.com/docs/glossary.md): The words these pages use: brand, placement, seller, owner, reseller, proven, hold, receipt and more. (for people and agents)