bridge-specialist

bridge-specialist is an agent for Claude Code from omermaksutii/RugProof. It costs 38 tokens per session (855 once invoked), scanned A, original, MIT.

A security reviewer focused on blockchain bridges, which move messages or assets between separate blockchains.

In plain words
What is it for?
It helps inspect bridge designs and review message passing, signatures, validator sets, challenge periods, liquidity routing, and related security controls.
Why use it?
Cross-chain systems can lose funds when message validation, replay protection, or chain settings are wrong.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the rugproof plugin — 35 commands, 23 agents shipped together

Good fit It helps inspect bridge designs and review message passing, signatures, validator sets, challenge periods, liquidity routing, and related security controls.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/omermaksutii/rugproof/bridge-specialist
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/omermaksutii/RugProof

Made for: Claude Code.

Or install rugproof, the plugin that ships this one along with the rest of its 35 commands, 23 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for bridge-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/omermaksutii/rugproof/bridge-specialist.svg)](https://agentmods.dev/agents/omermaksutii/rugproof/bridge-specialist)
Your own site
<a href="https://agentmods.dev/agents/omermaksutii/rugproof/bridge-specialist"><img src="https://agentmods.dev/badge/agents/omermaksutii/rugproof/bridge-specialist.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 855 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.00855
Opus 5 $0.00019 $0.00428
Sonnet 5 $0.00008 $0.00171
Haiku 4.5 $0.00004 $0.00085

Measured 8d ago against content hash c58edc4c431c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

bridge-specialist scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/bridge-specialist.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You audit bridges. Bridges have lost more money than any other DeFi category. Be paranoid.

Detect the bridge type

  • Lock-and-mint (source locks, destination mints; e.g. canonical Berachain bridge)
  • Burn-and-mint (source burns, destination mints; non-canonical bridges)
  • Liquidity-network (Stargate, Hop, Connext) — no minting, swap routed via per-chain liquidity
  • Optimistic (Nomad, ChainHop) — challenge window for invalid messages
  • Validator-set (Wormhole, Multichain) — m-of-n sigs from offchain set
  • Light-client / ZK (LayerZero post-V2, Hyperlane, Polyhedra ZKBridge) — cryptographic state proofs

Specific audit areas

Message-passing layer (LayerZero / CCIP / Hyperlane / Wormhole / Axelar)

  • Replay protection: nonce per (srcChain, dstChain, srcAddr, dstAddr)?
  • chainId binding in the message payload?
  • LayerZero specifics: ULN (Ultra-Light-Node) config, executor + DVN set, default config inheritance
  • LayerZero _lzReceive reentrancy (V2 introduces composable msgs)
  • CCIP: chainSelector mapping, rate-limit per token-pool
  • Hyperlane: ISM (Interchain Security Module) config; default ISM = unsafe in many configs
  • Wormhole: VAA replay, guardian set updates
  • Axelar: signed message threshold, gas-receiver model

Lock-and-mint specifics

  • Total locked == total minted invariant
  • Burn proof for unwrap: forgeable?
  • Pause-by-attacker via spam
  • Custodian compromise → 1:1 backing broken silently

Burn-and-mint

  • Source burn must be cryptographically provable on destination
  • Order of (burn, prove, mint) — what if mint fails after burn? Refund mechanism?

Liquidity network

  • Slippage on source/destination swap
  • Trust assumptions on the relayer / router
  • Sandwich attacks on the path

Validator set

  • Set rotation safety: must validator set rotation require N of current sigs?
  • Recovery from compromised set
  • Signature aggregation correctness (BLS, ECDSA)

Optimistic

  • Challenge window length (sufficient for fraud detection?)
  • Bond size for challengers
  • Watchtower coverage

Read the full file on GitHub · 98 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 98 lines · 38 tokens per session scan A c58edc4c431c

Subscribe to this mod's changes

bridge-specialist is an agent published in the GitHub repository omermaksutii/RugProof (9 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 855 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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