estimate

Calculate estimated cost and duration for distributed scans before running them.

Usage

fleex estimate [flags]

Flags

Flag	Short	Description	Default
--targets	-t	File with targets to scan
--instances	-i	Number of instances to use	10
--tool		Tool to use for time estimation	nuclei
--provider	-p	Cloud provider	config default
--duration	-d	Override estimated duration (hours)	auto

Basic Usage

Estimate cost for scanning a target list:

fleex estimate -t targets.txt -i 10

Output:

=== COST ESTIMATE ===

Targets:     5000
Instances:   10
Tool:        nuclei
Provider:    linode
Instance:    g6-nanode-1 @ $0.00750/hour

Duration:    ~25.0 minutes
Rate:        ~200 targets/min

Base cost:   $0.31
With buffer: $0.35 (+12%)

Cost level: LOW

To proceed, run:
  fleex spawn -n scan -c 10 && fleex scan -n scan -i targets.txt -o results.txt

Tool-Specific Estimation

Different tools have different processing speeds:

fleex estimate -t targets.txt -i 20 --tool masscan

Supported Tools

Tool	Estimated Speed
nuclei	~120 targets/hour/instance
httpx	~300 targets/hour/instance
subfinder	~200 targets/hour/instance
masscan	~600 targets/hour/instance
nmap	~60 targets/hour/instance
ffuf	~75 targets/hour/instance
puredns	~150 targets/hour/instance
amass	~30 targets/hour/instance

Provider Comparison

Compare costs across providers:

fleex estimate -t targets.txt -i 10 -p linode
fleex estimate -t targets.txt -i 10 -p digitalocean
fleex estimate -t targets.txt -i 10 -p vultr

Examples

Large-Scale Nuclei Scan

Estimate cost for scanning 100,000 URLs:

fleex estimate -t 100k-urls.txt -i 50 --tool nuclei

Output:

=== COST ESTIMATE ===

Targets:     100000
Instances:   50
Tool:        nuclei
Provider:    linode
Instance:    g6-nanode-1 @ $0.00750/hour

Duration:    ~16.7 minutes
Rate:        ~6000 targets/min

Base cost:   $0.10
With buffer: $0.11 (+12%)

Cost level: LOW

Port Scanning Campaign

Estimate cost for scanning IP ranges:

fleex estimate -t ip-ranges.txt -i 100 --tool masscan

Custom Duration Override

If you know how long your scan takes:

fleex estimate -t targets.txt -i 20 -d 2.5

This overrides the automatic estimation with 2.5 hours.

Cost Levels

The estimate provides a cost level indicator:

Level	Cost Range
LOW	< $1
MODERATE	$1 - $10
HIGH	$10 - $50
VERY HIGH	> $50

Instance Pricing

Linode

Size	RAM	Price/hour
g6-nanode-1	1GB	$0.0075
g6-standard-1	2GB	$0.018
g6-standard-2	4GB	$0.036

DigitalOcean

Size	RAM	Price/hour
s-1vcpu-1gb	1GB	$0.00744
s-1vcpu-2gb	2GB	$0.01488
s-2vcpu-2gb	2GB	$0.02679

Vultr

Size	RAM	Price/hour
vc2-1c-1gb	1GB	$0.006
vc2-1c-2gb	2GB	$0.012
vc2-2c-4gb	4GB	$0.024

Workflow

Typical workflow:

1. Estimate: fleex estimate -t targets.txt -i 10
2. Adjust instances if needed
3. Spawn: fleex spawn -n scan -c 10 --build security-tools
4. Run scan: fleex scan -n scan -i targets.txt -o results.txt
5. Delete: fleex delete -n scan

Notes

• Estimates include a 12% buffer for overhead (SSH, file transfer, etc.)
• Actual costs may vary based on scan complexity and network conditions
• Empty lines and comments in target files are not counted
• Use --duration to override if you have historical data