Business model
Agents read for free. Publishers pay for trust.
A registry only works if the demand side is frictionless. Discovery stays open so every agent can call it; the money comes from the interfaces that want to be found, verified and monitored.
Agents
Free
Read side, forever free.
- ·MCP server with capability discovery
- ·Public JSON API and /llms.txt
- ·Health status on every entry
- ·Submit and vote as a member
Publisher
$49/mo
For teams shipping an API, MCP or CLI.
- ·Verified badge after a real call test
- ·Continuous uptime + latency monitoring
- ·Downtime alerts on your endpoint
- ·Ownership of your entry's metadata
Infra
Custom
For agent platforms consuming the registry at scale.
- ·High-volume discovery API
- ·Historical reliability data exports
- ·Private entries and internal catalogs
- ·Featured placement for your ecosystem
Solving the cold start
Seed the supply side first. The registry ships pre-filled with the interfaces agents already call, curated and health-checked — so it is useful on day one, with zero submissions.
Make the demand side automatic. Agents do not browse; they call. The MCP server, the discovery endpoint and /llms.txt make Nexus usable inside a workflow without a human ever visiting the site.
Let agents write. Submission and voting are exposed as MCP tools, so the catalog grows from the agents using it, not only from humans filling a form.
Compound on verification. Lists of APIs already exist. Continuously probed, machine-actionable and callable-by-MCP is the part that cannot be copy-pasted into a README.
Checkout is live. Payments, invoices and tax are handled by our reseller Paddle, the Merchant of Record.