Skill

estimate-transaction-fee

This skill should be used when the user asks to "estimate transaction fee", "calculate BSV fee", "fee per byte", "transaction cost", or needs to estimate fees based on transaction size and current rates.

From bsv-skills

Install

Run in your terminal

npx claudepluginhub b-open-io/claude-plugins --plugin bsv-skills

Tool Access

This skill is limited to using the following tools:

Bash(bun:*)

Supporting Assets

View in Repository

scripts/estimate.test.ts

scripts/estimate.ts

Skill Content

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Stats

Stars1

Forks0

Last CommitJan 14, 2026

Actions

View Source View Plugin View on GitHub View README

Usage

# Estimate by size bun run skills/estimate-transaction-fee/scripts/estimate.ts --size 226 # Estimate from raw tx hex bun run skills/estimate-transaction-fee/scripts/estimate.ts --tx <hex> # Estimate by inputs/outputs bun run skills/estimate-transaction-fee/scripts/estimate.ts --inputs 2 --outputs 3 # Custom fee rate bun run skills/estimate-transaction-fee/scripts/estimate.ts --size 226 --rate 2 # JSON output bun run skills/estimate-transaction-fee/scripts/estimate.ts --size 226 --json # Show help bun run skills/estimate-transaction-fee/scripts/estimate.ts --help

Output Examples

Default output:

Fee Estimation ============== Size: 226 bytes Rate: 1 sat/byte Fee: 226 satoshis (0.00000226 BSV)

With --inputs/--outputs (shows breakdown):

Fee Estimation ============== Size: 226 bytes Rate: 1 sat/byte Fee: 226 satoshis (0.00000226 BSV) Breakdown: - Inputs (1): ~148 bytes - Outputs (2): ~68 bytes - Overhead: ~10 bytes

JSON output (--json):

{ "size": 226, "rate": 1, "fee": 226, "feeBsv": 0.00000226 }

Estimate Transaction Fee

Estimate fees for BSV transactions based on size and fee rates.

When to Use

Estimate fee before sending a transaction
Calculate size of a transaction
Understand fee structure

Usage

# Estimate by size
bun run skills/estimate-transaction-fee/scripts/estimate.ts --size 226

# Estimate from raw tx hex
bun run skills/estimate-transaction-fee/scripts/estimate.ts --tx <hex>

# Estimate by inputs/outputs
bun run skills/estimate-transaction-fee/scripts/estimate.ts --inputs 2 --outputs 3

# Custom fee rate
bun run skills/estimate-transaction-fee/scripts/estimate.ts --size 226 --rate 2

# JSON output
bun run skills/estimate-transaction-fee/scripts/estimate.ts --size 226 --json

# Show help
bun run skills/estimate-transaction-fee/scripts/estimate.ts --help

Size Estimation

P2PKH transaction size formula:

Base overhead: 10 bytes
Per input: ~148 bytes
Per output: ~34 bytes

Example: 1 input + 2 outputs = 10 + 148 + 68 = 226 bytes

Output Examples

Default output:

Fee Estimation
==============
Size: 226 bytes
Rate: 1 sat/byte
Fee: 226 satoshis (0.00000226 BSV)

With --inputs/--outputs (shows breakdown):

Fee Estimation
==============
Size: 226 bytes
Rate: 1 sat/byte
Fee: 226 satoshis (0.00000226 BSV)
Breakdown:
  - Inputs (1): ~148 bytes
  - Outputs (2): ~68 bytes
  - Overhead: ~10 bytes

JSON output (--json):

{
  "size": 226,
  "rate": 1,
  "fee": 226,
  "feeBsv": 0.00000226
}

Status

Complete