# GLS API Reference

For information on environments, host name, IP, port, TLS certificates, refer to:

{% content-ref url="../clear-finance-cloud/cfc-api-reference" %}
[cfc-api-reference](https://docs.cleartax.in/cleartax-docs/clear-finance-cloud/cfc-api-reference)
{% endcontent-ref %}

For information on input and output templates, error codes and architecture, refer to:

{% content-ref url="gls-api-reference/resources-and-masters" %}
[resources-and-masters](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/resources-and-masters)
{% endcontent-ref %}

For information on GL Stream APIs, refer to:

{% content-ref url="gls-api-reference/advanced-ingestion-api-reference-deprecated" %}
[advanced-ingestion-api-reference-deprecated](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api-reference-deprecated)
{% endcontent-ref %}