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Usage Center⚓︎

The Usage Center provides visibility into publishing activity across your organization and its namespaces. It allows users to review aggregate usage metrics for the selected organization, view namespace-level usage details based on their access permissions, and export namespace usage data.

You can access the Maven Central Usage Center at https://central.sonatype.com/publishing/usage. At the top of the page, select an organization from the drop-down menu. All usage data displayed on the page is scoped to the currently selected organization.

Tip

To learn more about organizations, including how to manage organization members and roles, see the Organization Management help documentation.

Publishing Limits for Free Maven Central Users⚓︎

Maven Central includes monthly publishing limits for Free users to ensure sustainable infrastructure for the Java ecosystem. These limits apply at the organization level. Organizations may include one or more namespaces.

For complete details, see the Publishing Limits help documentation.

Note

If you notice discrepancies in how your namespaces are organized, contact central-support@sonatype.com.

The current thresholds — and where your organization stands relative to them — are always visible at the top of this page. Limits may be adjusted over time as we better understand real-world publishing patterns.

Tip

If your organization is approaching or exceeding the free publishing limits, first review Reducing Publishing Usage for practical ways to reduce file count, release size, or release frequency.

If your publishing requirements still exceed the free limits after optimization, consider evaluating Maven Central Publisher Pro, which provides increased publishing capacity and access to Sonatype support.

Maven Central Usage Overview⚓︎

The Usage Overview section of the Usage Center displays organization-level metrics for the current month aggregated across all namespaces.

Metric Cards⚓︎

Four metric cards show your current usage with visual progress indicators:

Card Description
Total Release Size Total size of all files published in the current month
File Count Total number of files published across all releases in the current month
Release Count Total number of release events recorded in the current month
Relative Popularity Your percentile rank for demand on your published artifacts when compared with all active publishers on Maven Central, based on the last three months. This card is informational and is not evaluated against a limit.

Each of the three limit-based cards displays:

  • Current usage value
  • Progress bar showing usage relative to limits
  • Color-coded status: green when within limits; yellow at 75% to indicate approaching capacity; red at 90% to signal a critical threshold.
  • Month-over-month change compared to the previous calendar month.

If a namespace or your organization has an approved higher limit or exemption, the relevant metric card shows an Increased or Exempt badge. Selecting the badge shows the prior and adjusted values along with when the change was granted and when it expires, if applicable. If the override applies to all three limit-based metrics, the same badge also appears next to the organization name.

Increased limits can be granted at the organization level or at the namespace level. A namespace with its own increased limit is evaluated only against that namespace's usage and limit — it is not folded into the organization's overall usage or limits.

If your organization has an active Pro subscription, a PRO badge appears next to the organization name in the Usage Center, alongside a Plan and Limits option in your account menu. All users can view the organization's plan and publishing limits from that page; administrators also see a Manage Billing button for managing billing.

If your organization is approaching or exceeding the free publishing limits, the Usage Center includes a link to get started with Pro. You can also learn more or talk to our team at Maven Central Publisher Pro.

Select the View Trends button on any metric card to view historical trends for the last three months, including applicable usage limits. This helps publishers monitor consumption patterns and track usage against configured thresholds over time.

Note

Limits are enforced based on usage during the current calendar month. Historical periods are provided for trend analysis only.

Exceeding a hard limit initiates a 30-day grace period rather than immediate enforcement. This grace period resets after 2 consecutive months of being below limits. See Maven Central Publishing Limits for details.

If your organization is approaching or has reached a limit, a banner appears at the top of the page summarizing which metrics are affected and, once a grace period is active, how many days remain before enforcement takes effect. If a grace period has expired and enforcement is active for a metric, the banner reflects that releases over that limit are no longer being accepted.

Maven Central Usage by Namespace⚓︎

The namespace table shows detailed metrics for each namespace to which you have access. You will only see namespaces for which you have been granted access within the selected organization.

The following information is available in the namespace table:

Table Column Description
Namespace The group ID / namespace identifier
Release Size Total size of files published for this namespace
File Count Number of files published
Release Count Number of release events

You can also perform the following actions from this view:

  • Search – Filter namespaces by name pattern
  • Sort – Click column headers to sort ascending or descending
  • Export CSV – Download usage data for offline analysis

Metric Definitions⚓︎

Sonatype defines available metrics as follows:

Metric Definition
Release Count The total number of release events recorded during the selected time period. A release event is a distinct publish operation to Maven Central.
File Count The total number of files published across all releases during the selected time period. Each artifact file (JAR, POM, source JAR, javadoc JAR, etc.) counts as one file.
Release Size The total size of all files published during the selected time period, measured in bytes.
Relative Popularity Your percentile rank for demand on your published artifacts when compared with all active publishers on Maven Central, based on the last three months. This is informational only and is not subject to a limit.