Latest blog posts
Ginny Hendricks
2024 December 12

A progress update and a renewed commitment to community

Looking back over 2024, we wanted to reflect on where we are in meeting our goals, and report on the progress and plans that affect you - our community of 21,000 organisational members as well as the vast number of research initiatives and scientific bodies that rely on Crossref metadata. In this post, we will give an update on our roadmap, including what is completed, underway, and up next, and a bit about what’s paused and why.

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Rosa Morais Clark
2024 December 09

A summary of our Annual Meeting

The Crossref2024 annual meeting gathered our community for a packed agenda of updates, demos, and lively discussions on advancing our shared goals. The day was filled with insights and energy, from practical demos of Crossref’s latest API features to community reflections on the Research Nexus initiative and the Board elections. Our Board elections are always the focal point of the Annual Meeting. We want to start reflecting on the day by congratulating our newly elected board members: Katharina Rieck from Austrian Science Fund (FWF), Lisa Schiff from California Digital Library, Aaron Wood from American Psychological Association, and Amanda Ward from Taylor and Francis, who will officially join (and re-join) in January 2025.

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Lucy Ofiesh
2024 December 07

2024 POSI audit

Background The Principles of Open Scholarly Infrastructure (POSI) provides a set of guidelines for operating open infrastructure in service to the scholarly community. It sets out 16 points to ensure that the infrastructure on which the scholarly and research communities rely is openly governed, sustainable, and replicable. Each POSI adopter regularly reviews progress, conducts periodic audits, and self-reports how they’re working towards each of the principles. In 2020, Crossref’s board voted to adopt the Principles of Open Scholarly Infrastructure, and we completed our first self-audit.

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Ed Pentz
2024 December 05

Summary of the environmental impact of Crossref

In June 2022, we wrote a blog post “Rethinking staff travel, meetings, and events” outlining our new approach to staff travel, meetings, and events with the goal of not going back to ‘normal’ after the pandemic. We took into account three key areas: The environment and climate change Inclusion Work/life balance We are aware that many of our members are also interested in minimizing their impacts on the environment, and we are overdue for an update on meeting our own commitments, so here goes our summary for the year 2023!

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Documentation

Metadata Plus

Metadata Plus gives you enhanced access to all our supported APIs, guarantees service levels and support, and additional features such as snapshots and priority service/rate limits.

To use Metadata Plus, an optional paid-for service, you do not need to be a member. In addition to enhanced access to all our supported APIs (OAI-PMH and REST APIs) and metadata in XML and JSON, Metadata Plus provides you with:

  • a service level agreement guaranteeing you extra service and support, giving you a consistent and predictable experience
  • additional features such as snapshots and priority service/rate limits.

Metadata Plus users may use either or both of the included API interfaces:

Description of Service

FeatureDefined asNotes
SnapshotsUser-requested full-file downloads.

Data may be requested in JSON and XML via an interface separate from each API.

Pre-generated reports available via machine request and human user interface.		Filters based on commonly used data are in *under consideration*:
+ ISSN
+ Month and year
+ Publisher
+ Journal title
Priority Service/Rate LimitsPlus users will be prioritized via isolated resources.

Minimum number of queries per second per IP address.		Rate limiting of the API is primarily on a per IP basis. If a method allows, for example, for 150 requests per rate limit window, then it allows 150 requests per IP. This number can depend on the system state and may need to change. If it does, Crossref will publish it in the response headers.

In the exceptional event that a release is not backwards-compatible, Crossref will provide extensive lead time to communicate the changes, as part of our proactive support for Plus users.

How Metadata Plus works

Start by contacting us about Metadata Plus access. Plus subscribers can create their own API keys to use either or both the OAI-PMH and the REST API. Learn more in our extensive documentation for both the REST API and OAI-PMH interfaces.

Service level agreement (SLA)

Crossref will maintain an aggregated, average uptime for all of the interfaces that together comprise the Crossref Metadata Service of 99.5%, reported on a monthly basis. Crossref will provide technical support to Subscriber through Crossref’s existing support channels as requested by Subscriber, and will provide a response within one (1) business day to support requests received during normal working hours in the United States and the United Kingdom. “Business days” do not include weekends or legal holidays in the United States and the United Kingdom. “Response” means that support requests will be acknowledged. The time required for resolution will depend upon the nature of the request.

Agreement and fees for Metadata Plus

Learn more about the Metadata Plus service agreement, and fees and pricing tiers for Metadata Plus.

Page owner: Martyn Rittman   |   Last updated 2020-April-08