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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.

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Why list in the Gravity Index

Agent-native distribution

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”.

Recommended in context

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.

CPA billing — only pay on results

No CPC, no CPM. You define a cost per successful signup and pay only after a confirmed conversion or completed integration.

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How it works

1

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.
2

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.
3

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.
4

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.

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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.

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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.

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Badge & attribution

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

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Get listed

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