The marketplace for
measurable links.

Put your links in front of the right audience across 5,000+ verified sites. Pay per click, fraud-filtered, fully measured. Or earn by hosting sponsored links.

Get Started Browse Network

We read your site's own words to work out who it's for. Nothing is stored.

Hosts
5,301
connected to the network
Placement Slots
31,806
commercial inventory
Starting CPC
$1.50
per verified click
Fraud Filter
8-point
every click validated

How it works

01

Enter your URL

LinkAgent reads your site's title, description and headings and maps them onto the categories our inventory is tagged with.

02

Find audiences

We rank every placement slot against your site and show the score components — including the ones we can't measure yet.

03

Sponsor placements

New inventory is priced per verified click with a cap. No click, no charge. Every placement carries rel="sponsored nofollow".

04

Measure results

Impressions and clicks are counted on the slot itself. The number you're billed on is the number you can see.

Buy traffic

Reach an audience that already reads about what you do. Placements are disclosed as sponsored and sold on delivery, not on promised rankings.

Find placements

Earn with your site

Register your site, drop our embed snippet in your footer, keep 70% of every verified click. Publisher onboarding opens with your first live placements.

Register your site

What we don't sell

Not rankings. Not PageRank. Not search performance. Every paid placement carries rel="sponsored nofollow" and is disclosed as commercial. What's for sale is referral traffic, audience exposure and discovery — measured, and billed on what was delivered.

Inventory shows its registration date because a name held for twenty years is a different asset from one registered last spring — not because age moves a ranking.

Network Infrastructure

LinkAgent runs the cross-link mesh that connects the entire eCorp agent network — deterministic UTM attribution, link equity mapping, and portfolio-wide analytics.

Deterministic UTM tagging

Every cross-link gets a unique utm_source / medium / campaign tag. No guessing, no duplicates, no orphan traffic.

Link equity mapping

Source-to-target graph with theme-aware priorities. Each node knows who links to it and why.

Attribution ingestion

Hub workers POST their UTM aggregates back to LinkAgent for portfolio-wide visibility across the network.

Cross-link API

GET /api/crosslink returns a properly tagged URL in one call. Zero config on the caller side.

Linkmap

GET /api/linkmap returns recommended link targets for any source domain, pre-tagged and priority-sorted.

Agent card

MCP-compliant agent.json at /.well-known/agent.json. Used by AgentDAO for network registration.

Agent Network

LinkAgent placements ride the eCorp / AgentDAO network of measured host sites.

ListAgent.comSearch engine distribution ReferAgent.comReferral program engine BountyAgent.comSEO + content bounties ContentAgent.comContent production ServiceDirectory.com534-directory index AgentDAO.comNetwork registry

Ready to start?

Open an account as a sponsor or publisher — same signup, same dashboard.

Sign up as Sponsor Sign up as Publisher

Developer API

Integrate the placement engine and cross-link infrastructure into your own products.

Marketplace Endpoints
GET/api/placements?h=<host>&n=<network>&s=<slots>
Get placement slots for a host. Returns scored, fraud-filtered placements ready to render.
GET/api/analytics?campaign=<id>&days=<n>
Campaign performance analytics. Impressions, clicks, CTR, spend — all fraud-filtered.
GET/api/campaigns
List active campaigns with status, targeting, and current spend.
Cross-link Infrastructure
GET/api/crosslink?source=X&target=Y[&theme=T][&campaign=C][&ref=R]
Returns a properly UTM-tagged URL for a single cross-link.
GET/api/linkmap?source=X[&theme=Y][&limit=N]
Returns recommended cross-link targets for a source domain. Pre-tagged with UTM. Ordered by priority.
POST/api/link-ingest
Hub workers POST UTM aggregates. Body: { source, window_days, rows }. LinkAgent stores for portfolio-wide attribution.
GET/helpers/crosslink.js
Shared JS helper. Exports buildCrossLink(target, opts) and crossLinkRel(linkType).
GET/.well-known/agent.json
Agent card. MCP-compliant. Used by AgentDAO to register LinkAgent in the network directory.

Helper usage (hub worker side)

import { buildCrossLink, crossLinkRel } from 'https://linkagent.com/helpers/crosslink.js';

const href = buildCrossLink('realtychain.com', {
  source: 'servicedirectory',
  theme: 'home-services'
});
// href === "https://realtychain.com/?utm_source=servicedirectory&utm_medium=crosslink&utm_campaign=servicedirectory-home-services"

const rel = crossLinkRel('crosslink');    // "noopener"
const affRel = crossLinkRel('affiliate'); // "sponsored noopener"