Documentation Index
Fetch the complete documentation index at: https://developers.openalex.org/llms.txt
Use this file to discover all available pages before exploring further.
Sources are where works are hosted: journals, conferences, preprint repositories, and institutional repositories.
Filter, sort, and group_by fields
The API supports filtering, sorting, and grouping on sources fields. See Filtering, Sorting, and Grouping for syntax.
Fields marked (deprecated) are .search filters — use the search parameter instead.
Top-level
| Field | Sort | Group_by | Filter |
|---|
apc_usd | ✓ | ✓ | ✓ |
cited_by_count | ✓ | ✓ | ✓ |
continent | ✓ | ✓ | ✓ |
country_code | ✓ | ✓ | ✓ |
display_name | ✓ | | ✓ |
first_publication_year | ✓ | | ✓ |
from_created_date | ✓ | | ✓ |
has_issn | ✓ | ✓ | ✓ |
host_organization | ✓ | ✓ | ✓ |
host_organization_lineage | ✓ | ✓ | ✓ |
is_core | ✓ | ✓ | ✓ |
is_global_south | ✓ | ✓ | ✓ |
is_high_oa_rate | ✓ | ✓ | ✓ |
is_high_oa_rate_since_year | ✓ | | ✓ |
is_in_doaj | ✓ | ✓ | ✓ |
is_in_doaj_since_year | ✓ | | ✓ |
is_in_jstage | | ✓ | ✓ |
is_in_jstage_since_year | | | ✓ |
is_oa | ✓ | ✓ | ✓ |
is_ojs | ✓ | ✓ | ✓ |
issn | ✓ | ✓ | ✓ |
issn_l | ✓ | ✓ | ✓ |
last_publication_year | ✓ | | ✓ |
oa_flip_year | ✓ | | ✓ |
openalex | ✓ | ✓ | ✓ |
openalex_id | | ✓ | ✓ |
to_created_date | ✓ | | ✓ |
to_updated_date | ✓ | | ✓ |
type | ✓ | ✓ | ✓ |
works_count | ✓ | ✓ | ✓ |
Apc Prices
| Field | Sort | Group_by | Filter |
|---|
apc_prices.currency | ✓ | ✓ | ✓ |
apc_prices.price | ✓ | | ✓ |
Concept
| Field | Sort | Group_by | Filter |
|---|
concept.id | ✓ | ✓ | ✓ |
Concepts
| Field | Sort | Group_by | Filter |
|---|
concepts.id | ✓ | ✓ | ✓ |
Default
| Field | Sort | Group_by | Filter |
|---|
default.search (deprecated) | | | ✓ |
Display Name
| Field | Sort | Group_by | Filter |
|---|
display_name.search (deprecated) | | | ✓ |
Host Organization
| Field | Sort | Group_by | Filter |
|---|
host_organization.id | ✓ | | ✓ |
Ids
| Field | Sort | Group_by | Filter |
|---|
ids.mag | ✓ | | ✓ |
ids.openalex | ✓ | ✓ | ✓ |
Summary Stats
| Field | Sort | Group_by | Filter |
|---|
summary_stats.2yr_mean_citedness | ✓ | ✓ | ✓ |
summary_stats.h_index | ✓ | ✓ | ✓ |
summary_stats.i10_index | ✓ | ✓ | ✓ |
Topic Share
| Field | Sort | Group_by | Filter |
|---|
topic_share.id | ✓ | ✓ | ✓ |
Topics
| Field | Sort | Group_by | Filter |
|---|
topics.id | | | ✓ |
X Concepts
| Field | Sort | Group_by | Filter |
|---|
x_concepts.id | ✓ | ✓ | ✓ |
