diff --git a/modules/endorspy/main.nf b/modules/endorspy/main.nf
new file mode 100644
index 00000000..73bdd293
--- /dev/null
+++ b/modules/endorspy/main.nf
@@ -0,0 +1,38 @@
+process ENDORSPY {
+    tag "$meta.id"
+    label 'process_low'
+
+    conda (params.enable_conda ? "bioconda::endorspy=0.4" : null)
+    container "${ workflow.containerEngine == 'singularity' && !task.ext.singularity_pull_docker_container ?
+        'https://depot.galaxyproject.org/singularity/endorspy:0.4--hdfd78af_0':
+        'quay.io/biocontainers/endorspy:0.4--hdfd78af_0' }"
+
+    input:
+    tuple val(meta), path(stats), path(stats_optional)
+
+    output:
+    tuple val(meta), path("*_mqc.json"), emit: json
+    path "versions.yml"           , emit: versions
+
+    when:
+    task.ext.when == null || task.ext.when
+
+    script:
+    def args = task.ext.args ?: ''
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    def optionalstats = stats_optional ? "statsOptional=${stats_optional}" : ''
+
+    """
+    endorspy \\
+        $stats \\
+        $optionalstats \\
+        $args \\
+        -o json \\
+        -n $prefix
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        endorspy: \$(echo \$(endorspy --version 2>&1) | sed 's/^endorS.py //' )
+    END_VERSIONS
+    """
+}
diff --git a/modules/endorspy/meta.yml b/modules/endorspy/meta.yml
new file mode 100644
index 00000000..43ae0f94
--- /dev/null
+++ b/modules/endorspy/meta.yml
@@ -0,0 +1,48 @@
+name: "endorspy"
+description: endorS.py calculates endogenous DNA from samtools flagstat files and print to screen
+keywords:
+  - endogenous DNA
+  - ancient DNA
+  - percent on target
+  - statistics
+tools:
+  - "endorspy":
+      description: "endorS.py calculates endogenous DNA from samtools flagstat files and print to screen"
+      homepage: "https://github.com/aidaanva/endorS.py"
+      documentation: "https://github.com/aidaanva/endorS.py"
+      tool_dev_url: "https://github.com/aidaanva/endorS.py"
+      doi: "10.7717/peerj.10947"
+      licence: "['GPL v3']"
+
+input:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - stats:
+      type: file
+      description: output of samtools flagstat in a text file
+  - stats_optional:
+      type: file
+      description: output of a second samtools flagstat run in a text file. If two files are supplied,
+        the mapped reads of the second file is divided by the total reads in the first, since it
+        assumes that the <samplefile.stats> are related to the same sample. Useful after BAM filtering.
+
+output:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - versions:
+      type: file
+      description: File containing software versions
+      pattern: "versions.yml"
+  - json:
+      type: file
+      description: file with the endogenous DNA calculation tailored for multiQC
+      pattern: "*_mqc.json"
+
+authors:
+  - "@aidaanva"
diff --git a/tests/config/pytest_modules.yml b/tests/config/pytest_modules.yml
index ec981331..454a06f7 100644
--- a/tests/config/pytest_modules.yml
+++ b/tests/config/pytest_modules.yml
@@ -727,6 +727,10 @@ emmtyper:
   - modules/emmtyper/**
   - tests/modules/emmtyper/**
 
+endorspy:
+  - modules/endorspy/**
+  - tests/modules/endorspy/**
+
 ensemblvep:
   - modules/ensemblvep/**
   - tests/modules/ensemblvep/**
diff --git a/tests/modules/endorspy/main.nf b/tests/modules/endorspy/main.nf
new file mode 100644
index 00000000..2f04c13a
--- /dev/null
+++ b/tests/modules/endorspy/main.nf
@@ -0,0 +1,36 @@
+#!/usr/bin/env nextflow
+
+nextflow.enable.dsl = 2
+
+include { ENDORSPY } from '../../../modules/endorspy/main.nf'
+include { SAMTOOLS_FLAGSTAT } from '../../../modules/samtools/flagstat/main.nf'
+include { SAMTOOLS_FLAGSTAT as SAMTOOLS_FLAGSTAT2 } from '../../../modules/samtools/flagstat/main.nf'
+include { SAMTOOLS_VIEW } from '../../../modules/samtools/view/main.nf'
+include { SAMTOOLS_INDEX } from '../../../modules/samtools/index/main.nf'
+
+workflow test_endorspy {
+    
+    input = [
+        [ id:'test', single_end:false ], // meta map
+        file(params.test_data['sarscov2']['illumina']['test_paired_end_sorted_bam'], checkIfExists: true),
+        file(params.test_data['sarscov2']['illumina']['test_paired_end_sorted_bam_bai'], checkIfExists: true)
+    ]
+    
+
+    SAMTOOLS_FLAGSTAT ( input )
+    SAMTOOLS_VIEW ( input, [] )
+    SAMTOOLS_INDEX ( SAMTOOLS_VIEW.out.bam )
+    input2 = SAMTOOLS_VIEW.out.bam
+       .mix(SAMTOOLS_INDEX.out.bai)
+       .groupTuple(by:0)
+       .map{
+            def meta = it[0]
+            def bam = it[1][0]
+            def bai = it[1][1]
+
+            [meta, bam, bai]
+       }
+    SAMTOOLS_FLAGSTAT2 ( input2 )
+    ch_input_flagstat = SAMTOOLS_FLAGSTAT.out.flagstat.join(SAMTOOLS_FLAGSTAT2.out.flagstat)
+    ENDORSPY ( ch_input_flagstat )
+}
diff --git a/tests/modules/endorspy/nextflow.config b/tests/modules/endorspy/nextflow.config
new file mode 100644
index 00000000..0a243cef
--- /dev/null
+++ b/tests/modules/endorspy/nextflow.config
@@ -0,0 +1,12 @@
+process {
+
+    publishDir = { "${params.outdir}/${task.process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()}" }
+
+    withName:SAMTOOLS_VIEW {
+        ext.args = "-q 30 -b"
+    }
+
+    withName:SAMTOOLS_FLAGSTAT2 {
+        ext.prefix = "test.filtered"
+    }
+}
diff --git a/tests/modules/endorspy/test.yml b/tests/modules/endorspy/test.yml
new file mode 100644
index 00000000..1369227f
--- /dev/null
+++ b/tests/modules/endorspy/test.yml
@@ -0,0 +1,7 @@
+- name: endorspy test_endorspy
+  command: nextflow run ./tests/modules/endorspy -entry test_endorspy -c ./tests/config/nextflow.config  -c ./tests/modules/endorspy/nextflow.config
+  tags:
+    - endorspy
+  files:
+    - path: output/endorspy/test_endogenous_dna_mqc.json
+      md5sum: fe7bea111d966db321dcde7fbfb062b1