Stop rebuilding the calendar.
Every Catholic API
in one place
Liturgical calendars, daily readings, scripture, the Catechism, canon law, prayers and saints — free and paid, rated by the developers who ship on them.
Someone already solved this.
Top APIs
- 1#1 most recommended
AquinasOperaOmnia
The complete works of St. Thomas Aquinas.
- Spiritual Reading
- Catechism & Doctrine
- No key
- Open source
fromgithub.comFreeResponding - 2fromgithub.comFreeResponding
- 3
catechism-ccc-jsonDeprecated
The Catechism of the Catholic Church as structured JSON.
- Catechism & Doctrine
- No key
- Open source
fromgithub.comFreeResponding - 4
Catholic Semantic Canon
A formal ontology of Scripture, Tradition and the Magisterium.
- Catechism & Doctrine
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 5
catholicism-in-jsonDeprecated
Catechism, Code of Canon Law and the GIRM in one JSON repo.
- Catechism & Doctrine
- Canon Law
- No key
- Open source
fromgithub.comFreeResponding - 6
CDOCTDR — Doctors of the Church
Canonical IDs for the 38 Doctors of the Church.
- Church Data
- Saints
- No key
- Open source
fromgithub.comFreeResponding - 7
CECDR — Ecclesiastical Circumscriptions
Canonical IDs for every diocese, eparchy and prelature.
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 8fromgithub.comFreeResponding
- 9
CICLSALDR — Consecrated Life
Canonical IDs for religious orders, congregations and societies.
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 10
CLBDR — Liturgical Books
Canonical IDs for the liturgical books of the Roman Rite and their editions.
- Liturgy
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 11
CLEDR — Liturgical Events
Canonical IDs for the celebrations of the Roman Missal.
- Liturgical Calendar
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 12
CMDDR — Magisterial Documents
Canonical IDs for magisterial and papal documents.
- Church Documents
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 13
COECDR — Ecumenical Councils
Canonical IDs for the 21 ecumenical councils.
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 14
CRMEDR — Martyrology Eulogies
Canonical IDs for the eulogies of the Roman Martyrology.
- Saints
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 15
CRMETDR — Roman Missal EditionsDeprecated
Canonical IDs for the editions of the Latin Roman Missal.
- Liturgy
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 16
CRPDR — Roman Pontiffs
Canonical IDs for the popes, from Peter to the reigning pope.
- Church Data
- No key
- Open source
fromgithub.comFreeResponding - 17
Divinum Officium
The traditional Divine Office and Missal, source and all.
- Liturgy of the Hours
- Traditional Latin Mass
- No key
- Open source
fromdivinumofficium.comFreeResponding - 18
romanus
The Roman Catechism of the Council of Trent, structured.
- Catechism & Doctrine
- No key
- Open source
fromgithub.comFreeResponding - 19fromgithub.comFreeResponding
- 20fromgithub.comFreeResponding
241 listings across both tracks — 136 products and 105 APIs. How ranking works