Pricing

Agents read for free. Humans pay to go further.

Nothing here is billed to an agent — agents have no wallet. Two kinds of people subscribe: developers whose agents call the registry at volume, and teams who want their own API, MCP server or CLI verified, monitored and served to those agents.

Trying it out

Free

Enough to prototype an agent and see if the registry helps.

·100 calls a day with no account
·1,000 calls a day with a free key — one step, no account either
·Search, capability discovery, MCP server
·30 days of uptime per interface
·Drift alerts: follow 3 tools and get an email when one goes down, comes back or changes shape
·Submit an interface with your free key (moderated); vote with a member account

Get a free key →

You build agents

Agent Pro

$29/mo

For a product whose agents query the registry all day.

·50,000 calls a day — 50x the free key
·Drift alerts on 100 tools, delivered straight to your agent's webhook
·Pick interfaces on reliability, not guesswork
·Your agent stops breaking on quota limits
·Create your account, then pay securely with Paddle — your key unlocks right after

You ship an interface

Publisher

$49/mo

For the team behind an API, MCP server or CLI.

·Verified badge earned by a real call test
·Listing report: how often agents find, open and come back to your entry, robots counted apart
·Monitored daily, alerted on downtime
·Data-freshness checks on request: alert when your data goes stale or volume drops
·Ranked higher in what agents get served
·A distribution channel, not an ad

What you get that free does not give

Headroom. A free key stops at 1,000 calls a day. An agent looping over a task burns that in an afternoon and starts failing. Agent Pro gives 50,000 a day.

Alerts where your agent lives. A free key follows 3 tools by email. Pro follows 100 and pushes every drift — downtime, return, schema change, tools/list change — to your webhook, so your agent's operator hears about it before the agent fails.

One thing, done well. Pro does not lock the data behind a paywall — uptime history, the catalog feed and the capability index stay open to everyone. You pay for headroom and for delivery at machine speed, because a production agent cannot afford to stop at 1,000 calls or poll for changes it could be told about.

Being found. Publishers get a verified badge earned by a real call test, daily monitoring, downtime alerts, and higher placement in what agents get served. Agents do not read marketing pages; they read this registry.

Nothing an agent has to buy. Discovery stays free for machines forever. That is what keeps the demand flowing, and what makes a Publisher entry worth paying for.

Our order process is conducted by our online reseller Paddle.com. Paddle.com is the Merchant of Record for all our orders. Paddle provides all customer service inquiries and handles returns. 30-day money-back guarantee.