How do I install the Flashbots skill?

Run npx skillmds@latest add hairyf/flashbots 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 Flashbots safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, 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 Flashbots?

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 Flashbots free to use?

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

Who published Flashbots?

hairyf (@hairyf) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Flashbots by hairyf — Agent Skill

Name: Flashbots
Rating: 4.2 (5 reviews)
Author: hairyf

File contents

Skill based on mev-boost (flashbots/mev-boost), generated at 2026-02-24.

MEV-Boost is open-source middleware run by validators to access a competitive block-building market. It implements out-of-protocol proposer-builder separation (PBS): relays aggregate blocks from builders, and MEV-Boost selects the highest bid for the consensus client.

Core References

Topic	Description	Reference
PBS overview	Roles (validators, relays, builders), block proposal flow	core-pbs-overview
Builder API	Endpoints (status, registerValidator, getHeader, getPayload), request flow	core-api

Features

Topic	Description	Reference
Relays and CLI	Relay URLs, network flags, min-bid, relay-check, timeouts, metrics	features-relays-config
Timing games	Delaying and repeating getHeader to capture better bids; YAML config	features-timing-games
YAML config	Config file path, hot reload, structure, relay list	features-config-yaml

Best Practices

Topic	Description	Reference
Validator and relay	Trust assumptions, relay selection, min-bid, proposer boost, security	best-practices-validator

Advanced

Topic	Description	Reference
test-cli	Generate validator data, register, getHeader, getPayload for testing	advanced-test-cli

---name: flashbotsdescription: MEV-Boost middleware for PoS Ethereum — proposer-builder separation, relays, timing games, and Builder API.metadata: author: hairy version: "2026.02.24" source: Generated from https://github.com/flashbots/mev-boost, scripts located at https://github.com/antfu/skills---> Skill based on mev-boost (flashbots/mev-boost), generated at 2026-02-24.MEV-Boost is open-source middleware run by validators to access a competitive block-building market. It implements out-of-protocol proposer-builder separation (PBS): relays aggregate blocks from builders, and MEV-Boost selects the highest bid for the consensus client.## Core References| Topic | Description | Reference ||-------|-------------|-----------|| PBS overview | Roles (validators, relays, builders), block proposal flow | [core-pbs-overview](references/core-pbs-overview.md) || Builder API | Endpoints (status, registerValidator, getHeader, getPayload), request flow | [core-api](references/core-api.md) |## Features| Topic | Description | Reference ||-------|-------------|-----------|| Relays and CLI | Relay URLs, network flags, min-bid, relay-check, timeouts, metrics | [features-relays-config](references/features-relays-config.md) || Timing games | Delaying and repeating getHeader to capture better bids; YAML config | [features-timing-games](references/features-timing-games.md) || YAML config | Config file path, hot reload, structure, relay list | [features-config-yaml](references/features-config-yaml.md) |## Best Practices| Topic | Description | Reference ||-------|-------------|-----------|| Validator and relay | Trust assumptions, relay selection, min-bid, proposer boost, security | [best-practices-validator](references/best-practices-validator.md) |## Advanced| Topic | Description | Reference ||-------|-------------|-----------|| test-cli | Generate validator data, register, getHeader, getPayload for testing | [advanced-test-cli](references/advanced-test-cli.md) |

Frequently asked questions

Flashbots