> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trygravity.com/llms.txt
> Use this file to discover all available pages before exploring further.

# For Service Providers

> Get listed, earn on every agent-driven signup

The Gravity Index is a recommendation surface used by AI agents and platforms: coding agents
inside Cursor, Claude Desktop and Claude Code, plus custom agents and chat products. When an agent
recommends your service, the user gets the reasoning and a tracked link to your signup page.

## Why list in the Gravity Index

<CardGroup cols={2}>
  <Card title="Agent-native distribution" icon="robot">
    Agents call `gravity_index_search` natively via MCP. You show up the moment a developer
    asks their agent for "a database" or "payments for Next.js".
  </Card>

  <Card title="Recommended in context" icon="comments">
    Platforms can share a conversation summary with the Index, so you are recommended when the
    user actually has the problem you solve, not on a keyword match.
  </Card>

  <Card title="CPA billing — only pay on results" icon="dollar-sign">
    No CPC, no CPM. You define a cost per successful signup and pay only after a confirmed
    conversion or completed integration.
  </Card>
</CardGroup>

## How it works

<Steps>
  <Step title="You get listed">
    Send us your service details (slug, name, category, description, tags) and a signup landing
    page URL. We review + add it to the catalog.
  </Step>

  <Step title="Agent finds you via search or browse">
    When a developer's agent calls `gravity_index_search("managed Postgres with branching")`,
    the Index's reasoning layer may recommend you with an explanation of why.
  </Step>

  <Step title="User clicks through">
    The response includes the reasoning, a `click_url`, and a `grclid`. The click link redirects
    the user to your signup page and records attribution; it does not create a conversion or CPA
    charge by itself.
  </Step>

  <Step title="You get a qualified signup, we get a CPA">
    The user signs up on your platform. You confirm it through your conversion feed, and if your
    listing has an explicit CPA configured, that confirmed conversion creates the CPA charge.
  </Step>
</Steps>

## Economics

Each listing configures `default_cpa_cents` — the cost charged per confirmed conversion.

Private platform ranking can prefer CPA-eligible listings when quality ties. Agent-facing output
still optimizes for relevance and does not expose economics.

## Improving your listing

Once listed, three things move the needle:

1. **A tight description**: one or two sentences on what you do and who it is for. The
   reasoning layer reads this when deciding whether you fit the user's problem.
2. **Accurate category and tags**: these decide which searches you are a candidate for.
3. **A signup page that matches the pitch**: the user arrives from a recommendation that
   explained why you fit; the landing page should confirm it fast.

## Badge & attribution

We'll provide a "Available via Gravity Index" badge for your docs. Linking back is
optional, but it helps developers find us.

## Get listed

Email us at `index@trygravity.ai` or open a PR against the Gravity Index catalog (contact us
for the slug reservation flow).


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