How do I install the Bitcoin Testing Regtest skill?

Run npx skillmds@latest add claude-dev-suite/bitcoin-testing-regtest in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Bitcoin Testing Regtest safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: CAUTION, Skill Scanner: PASS. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Bitcoin Testing Regtest?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Bitcoin Testing Regtest free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Bitcoin Testing Regtest?

claude-dev-suite (@claude-dev-suite) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Bitcoin Testing Regtest by claude-dev-suite

Name: Bitcoin Testing Regtest
Rating: 4.2 (5 reviews)
Author: claude-dev-suite

Bitcoin Testing Regtest

Regtest mode: instant block generation, deterministic fork, multi-node setup, generatetoaddress, fallbackfee config. USE WHEN: building Bitcoin tests, simulating network conditions, scaffolding integration tests.

claude-dev-suite Updated Sep 8, 2026 28 repo stars

File contents

regtest

Bitcoin's "regression test" mode. Local-only chain, instant block generation, no PoW difficulty. The default for Bitcoin testing.

Setup

bitcoind -regtest -daemon -fallbackfee=0.00001
bitcoin-cli -regtest createwallet test
bitcoin-cli -regtest -rpcwallet=test getnewaddress
# bcrt1q...

# Mine 101 blocks (subsidy matures after 100)
bitcoin-cli -regtest -rpcwallet=test generatetoaddress 101 <addr>

# Now wallet has 50 BTC mature
bitcoin-cli -regtest -rpcwallet=test getbalance

-fallbackfee is required because the empty regtest mempool has no fee estimates.

Multi-node setup

# Node 1
bitcoind -regtest -datadir=/tmp/n1 -port=18444 -rpcport=18443 -daemon

# Node 2
bitcoind -regtest -datadir=/tmp/n2 -port=18445 -rpcport=18446 \
  -connect=127.0.0.1:18444 -daemon

# Node 3
bitcoind -regtest -datadir=/tmp/n3 -port=18447 -rpcport=18448 \
  -connect=127.0.0.1:18444 -daemon

Useful commands

# Mine blocks (deterministic; instant)
bitcoin-cli -regtest generatetoaddress 1 <addr>

# Reset chain (start fresh)
rm -rf ~/.bitcoin/regtest
bitcoind -regtest -daemon

# Specific block at specific time
bitcoin-cli -regtest setmocktime <unix_ts>
bitcoin-cli -regtest generatetoaddress 1 <addr>

Address prefixes

P2PKH: m... or n....
P2SH: 2....
Bech32: bcrt1q....
Bech32m: bcrt1p....

Use cases

Unit tests that need a real bitcoind.
Integration tests for wallet / Lightning logic.
Demos / tutorials with deterministic state.
Reproducing bugs with controlled chain history.

Common bugs

Forgetting -fallbackfee → sendtoaddress errors.
Forgetting to mine 100+ blocks before spending coinbase → "input immature".
Mixing regtest output with mainnet RPC by accident → use distinct -datadir and explicit -regtest arg.

---name: bitcoin-testing-regtestdescription: Regtest mode: instant block generation, deterministic fork, multi-node setup, generatetoaddress, fallbackfee config. USE WHEN: building Bitcoin tests, simulating network conditions, scaffolding integration tests.---# regtestBitcoin's "regression test" mode. Local-only chain, instant blockgeneration, no PoW difficulty. The default for Bitcoin testing.## Setup```bashbitcoind -regtest -daemon -fallbackfee=0.00001bitcoin-cli -regtest createwallet testbitcoin-cli -regtest -rpcwallet=test getnewaddress# bcrt1q...# Mine 101 blocks (subsidy matures after 100)bitcoin-cli -regtest -rpcwallet=test generatetoaddress 101 <addr># Now wallet has 50 BTC maturebitcoin-cli -regtest -rpcwallet=test getbalance````-fallbackfee` is **required** because the empty regtest mempool hasno fee estimates.## Multi-node setup```bash# Node 1bitcoind -regtest -datadir=/tmp/n1 -port=18444 -rpcport=18443 -daemon# Node 2bitcoind -regtest -datadir=/tmp/n2 -port=18445 -rpcport=18446 \ -connect=127.0.0.1:18444 -daemon# Node 3bitcoind -regtest -datadir=/tmp/n3 -port=18447 -rpcport=18448 \ -connect=127.0.0.1:18444 -daemon```## Useful commands```bash# Mine blocks (deterministic; instant)bitcoin-cli -regtest generatetoaddress 1 <addr># Reset chain (start fresh)rm -rf ~/.bitcoin/regtestbitcoind -regtest -daemon# Specific block at specific timebitcoin-cli -regtest setmocktime <unix_ts>bitcoin-cli -regtest generatetoaddress 1 <addr>```## Address prefixes- P2PKH: `m...` or `n...`.- P2SH: `2...`.- Bech32: `bcrt1q...`.- Bech32m: `bcrt1p...`.## Use cases- **Unit tests** that need a real bitcoind.- **Integration tests** for wallet / Lightning logic.- **Demos / tutorials** with deterministic state.- **Reproducing bugs** with controlled chain history.## Common bugs- Forgetting `-fallbackfee` → `sendtoaddress` errors.- Forgetting to mine 100+ blocks before spending coinbase → "input immature".- Mixing regtest output with mainnet RPC by accident → use distinct `-datadir` and explicit `-regtest` arg.## See also- [signet/SKILL.md](../signet/SKILL.md)- [polar/SKILL.md](../polar/SKILL.md)- [nigiri/SKILL.md](../nigiri/SKILL.md)- [../core/operations/SKILL.md](../../core/operations/SKILL.md)

Frequently asked questions