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Aegis

Уровень безопасности для автономных DeFi-агентов. | Веб-сайт | Документация

AI-агенты, торгующие в сети, не имеют возможности отличить легитимный токен от ханипота. Aegis решает эту проблему. Это MCP-сервер, к которому может подключиться любой агент, подкрепленный ончейн-контрактами, обеспечивающими проверки безопасности.

Перед тем как агент совершит обмен, Aegis сканирует целевой контракт, симулирует транзакцию и возвращает простой ответ: «можно» или «нельзя». Если у контракта налог на продажу 99% или скрытая функция приостановки, агент никогда не будет с ним взаимодействовать.

Почему это существует

Мы наблюдали, как агент потерял весь свой кошелек из-за токена-ханипота менее чем за 30 секунд. Токен выглядел нормально на первый взгляд — верифицированный контракт, приличная ликвидность, активная торговля. Но в коде был скрыт налог на продажу 99% и скрытый владелец за поддельным renounceOwnership().

Ни одна агентская платформа не могла это обнаружить. Поэтому мы создали свою.

Related MCP server: pharos-guardskill

Как это работает

Agent -> Aegis (scan + simulate + decide) -> Chain
  1. Агент подключается к Aegis через MCP (одна строка конфигурации)

  2. Перед любым обменом/одобрением/переводом агент вызывает assess_risk

  3. Aegis сканирует исходный код контракта, симулирует транзакцию, проверяет на наличие паттернов ханипотов

  4. Возвращает ALLOW (разрешить), WARN (предупредить) или BLOCK (заблокировать) с оценкой риска (0-100)

  5. Ончейн: контракт AegisGateway обеспечивает аттестацию перед отправкой транзакции

Быстрый старт

# Add to Claude Code
claude mcp add aegis npx aegis-defi

# Or clone and try the demo
git clone https://github.com/StanleytheGoat/aegis
cd aegis && npm install
npx tsx demo/catch-honeypot.ts

Демонстрация развертывает намеренно вредоносный токен (налог на продажу 99%, поддельный отказ от владения, скрытый администратор) и наблюдает, как Aegis ловит каждый «красный флаг»:

Aegis Risk Assessment
  Risk Score: 100/100
  Findings:
    [CRITICAL] Fake Ownership Renounce
    [CRITICAL] Asymmetric Buy/Sell Tax (99% sell)
    [CRITICAL] Sell Pause Mechanism
    [HIGH]     Hidden Max Sell Amount
    [HIGH]     Hidden Admin Functions
  Decision: BLOCK

Инструменты

MCP-сервер (TypeScript) — 6 инструментов, доступных любому MCP-совместимому агенту:

Инструмент

Назначение

scan_contract

Поиск паттернов по 165 известным типам эксплойтов

simulate_transaction

Пробный запуск в форкнутой сети

check_token

Проверки против ханипотов (возможность продажи, концентрация активов)

assess_risk

Комплексная оценка риска с подписанной аттестацией

trace_transaction

Отслеживает каждый внутренний вызов, сканирует каждый контракт

search_solodit

Сверка с более чем 50 000 реальных результатов аудита

Смарт-контракты (Solidity) — развернуты в основной сети Base:

Контракт

Адрес

Назначение

AegisGateway

0x62c6...0fa3

Оболочка безопасности для любого взаимодействия с DeFi. Проверяет аттестации, оценивает риски.

AegisSafetyHook

0xaEE5...40C0

Хук Uniswap v4 beforeSwap. Блокирует обмены без действительной аттестации безопасности.

Документация

Безопасность

Создано в соответствии с лучшими практиками безопасности Ethereum (на основе ethskills):

  • Подписи: Chain ID + адрес контракта во всех подписанных сообщениях (защита от кроссчейн-повторов). Проверка EIP-2 на податливость s-значения. ecrecover проверяется на соответствие address(0).

  • Математика комиссий: Умножение перед делением. Явные проверки на переполнение. Базисные пункты (не проценты).

  • Контроль доступа: OZ Ownable + ReentrancyGuard на Gateway. Неизменяемый владелец на Hook. Неизменяемый получатель комиссии.

  • Развертывание: Использование Safe Singleton Factory CREATE2. Исходный код верифицирован на Basescan. Владение передано мультисигу Safe.

  • Тестирование: 165 тестов (42 контрактных + 123 TypeScript). Форк-тесты против реального состояния основной сети Base.

Тесты

npm test              # TypeScript unit tests (123)
npm run test:contracts # Solidity contract tests (42)
npm run demo          # Honeypot detection demo

Журнал изменений

v0.5.0 (Текущая)

  • Поддержка аттестации хуковassess_risk теперь возвращает аттестации как шлюза, так и хука для пулов, защищенных Uniswap v4

  • Валидация EVM-адресов — все входные данные инструментов MCP проверяют правильность формата адреса

  • Расширенный список известных контрактов — Paraswap, Balancer Vault, CoW Protocol, Permit2, Uniswap V4 PoolManager

  • Экспорты SDK — модули attester и solodit теперь доступны для программного использования

  • Усиленная загрузка — проверки response.ok, 10-секундные тайм-ауты для всех внешних запросов

  • Заголовки безопасности и SEO-файлы для лендинга

v0.4.0

  • Интеграция с Solodit — инструмент search_solodit запрашивает более 50 000 реальных результатов аудита от Cyfrin, Sherlock, Code4rena, Trail of Bits и других

  • Автоматическое обогащениеassess_risk сверяет обнаруженные паттерны с реальными результатами аудита, если установлен SOLODIT_API_KEY

  • Модель API-ключей по выбору — каждый агент предоставляет свой собственный ключ Solodit, нет общих лимитов запросов

v0.3.0

  • 165 паттернов эксплойтов в 25 категориях (ранее 22)

  • Анализ на уровне трассировки — инструмент trace_transaction отслеживает каждый внутренний вызов и сканирует каждый контракт

v0.2.0

  • 22 паттерна эксплойтов (ранее 12) — метаморфные контракты, манипуляции с оракулами, MEV-сэндвичи

  • Навыки агентов — устанавливаемые файлы навыков для Claude Code

  • Интеграция с Flaunch SDK — сканирование безопасности для запуска мемкоинов в пулах Uniswap v4

Лицензия

MIT

Available Tools

4 tools
assess_riskA

Comprehensive risk assessment combining contract scanning, transaction simulation, and token checks. This is the recommended all-in-one safety check before any DeFi interaction. Returns a go/no-go recommendation.

ParametersJSON Schema
NameRequiredDescriptionDefault
actionYesType of action being assessed
targetContractYesThe contract being interacted with
chainIdNoChain ID
fromYesThe agent's wallet address
transactionDataNoCalldata for the transaction (hex)
valueNoETH value (in wei)0
tokenAddressNoToken address if this involves a token swap

TDQS

A4.2/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden. It discloses the tool's comprehensive nature and returns a 'go/no-go recommendation', but lacks details on permissions, rate limits, or potential side effects. It adequately describes the core behavior but misses deeper operational context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the core purpose in the first sentence, uses two efficient sentences total with zero wasted words, and clearly communicates the tool's value proposition and recommendation status without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a complex 7-parameter tool with no annotations and no output schema, the description is reasonably complete. It explains the tool's integrative nature, when to use it, and the output type ('go/no-go recommendation'), though it could elaborate more on behavioral risks or error handling.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3. The description adds no specific parameter details beyond what the schema provides, but it contextualizes the inputs as part of a 'comprehensive risk assessment' for DeFi safety checks, which slightly enhances understanding.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('combining contract scanning, transaction simulation, and token checks') and resources ('DeFi interaction'), and distinguishes it from sibling tools by positioning it as the 'recommended all-in-one safety check' that integrates their functions.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states when to use this tool ('before any DeFi interaction') and implies alternatives by naming sibling tools (check_token, scan_contract, simulate_transaction) as components it combines, making it the comprehensive choice over piecemeal approaches.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

check_tokenA

Check if a token is safe to trade. Detects honeypot mechanics (can't sell), concentrated holdings, fake ownership renouncement, and other scam indicators. Use this before swapping into any unfamiliar token.

ParametersJSON Schema
NameRequiredDescriptionDefault
tokenAddressYesThe token contract address to check
chainIdNoChain ID (1=Ethereum, 8453=Base)
holderAddressNoOptional: address to check balance for

TDQS

A4.1/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It describes what the tool does (detects scam indicators) and its intended use case, but lacks details on behavioral traits such as rate limits, authentication needs, response format, or error handling. The description is informative but incomplete for operational transparency.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the core purpose in the first sentence and follows with specific use guidance. Both sentences are essential, with no wasted words, making it highly efficient and well-structured for quick understanding.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (assessing token safety with scam detection) and lack of annotations and output schema, the description is moderately complete. It covers the purpose and usage well but lacks details on behavioral aspects and output, which are critical for an AI agent to invoke it correctly. It meets minimum viability but has clear gaps in operational context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all parameters (tokenAddress, chainId, holderAddress) with descriptions. The description does not add any parameter-specific semantics beyond what the schema provides, such as explaining the significance of holderAddress in scam detection. Baseline score of 3 is appropriate as the schema handles parameter documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('check', 'detects') and resources ('token'), identifying scam indicators like honeypot mechanics, concentrated holdings, and fake ownership renouncement. It distinguishes from siblings by focusing on token safety assessment rather than general risk assessment, contract scanning, or transaction simulation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states when to use this tool: 'before swapping into any unfamiliar token.' This provides clear context for usage and implies alternatives (e.g., not using it for familiar tokens or after swapping). While it doesn't name specific sibling tools, the guidance is direct and actionable.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

scan_contractA

Analyze a smart contract's source code or bytecode for known exploit patterns, honeypot mechanics, rug-pull signals, and security vulnerabilities. Returns a risk score (0-100) and detailed findings. Use this BEFORE interacting with any unfamiliar contract.

ParametersJSON Schema
NameRequiredDescriptionDefault
sourceNoSolidity source code of the contract to analyze
bytecodeNoContract bytecode (hex) to analyze if source is unavailable
contractAddressNoContract address - if provided, will attempt to fetch source from block explorer
chainIdNoChain ID (1=Ethereum, 8453=Base, 84532=Base Sepolia)

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden and does well by disclosing key behaviors: it analyzes for specific exploit patterns, returns a risk score and findings, and has a precautionary use case. However, it lacks details on rate limits, authentication needs, or error handling.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the core purpose, followed by usage guidance, all in two efficient sentences with zero wasted words, making it easy to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (security analysis with 4 parameters) and no output schema, the description is mostly complete, covering purpose, usage, and output types. However, it could benefit from more details on behavioral aspects like performance or limitations to fully compensate for the lack of annotations and output schema.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all parameters well. The description adds no additional parameter semantics beyond implying analysis can be done on source, bytecode, or via address, which is already covered in the schema. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('analyze', 'returns') and resources ('smart contract's source code or bytecode'), distinguishing it from siblings like 'assess_risk' or 'check_token' by focusing on contract analysis for security patterns.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It explicitly states when to use this tool ('BEFORE interacting with any unfamiliar contract'), providing clear context and distinguishing it from alternatives like 'simulate_transaction' by focusing on pre-interaction analysis rather than simulation.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

simulate_transactionA

Simulate a transaction on a forked chain WITHOUT actually executing it. Detects reverts, abnormal gas usage, and other red flags. Use this to preview what will happen before sending a real transaction.

ParametersJSON Schema
NameRequiredDescriptionDefault
chainIdNoChain ID to simulate on
fromYesSender address
toYesTarget contract address
dataYesTransaction calldata (hex)
valueNoETH value to send (in wei)0

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden and does well by disclosing key behavioral traits: it's a simulation (non-destructive), detects specific issues (reverts, abnormal gas usage, red flags), and operates on a forked chain. It doesn't mention rate limits, authentication needs, or detailed output format, but covers essential safety and scope.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences with zero waste: first defines the tool's purpose and key features, second provides usage guidance. Every phrase adds value, and it's front-loaded with the core functionality.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no annotations and no output schema, the description does well by explaining the tool's behavior, safety profile (non-execution), and use case. It could improve by hinting at return values (e.g., simulation results), but for a 5-parameter tool with good schema coverage, it's largely complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all parameters thoroughly. The description adds no additional parameter semantics beyond implying the simulation context, which aligns with the schema. Baseline 3 is appropriate as the schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('simulate a transaction'), the resource ('on a forked chain'), and the key distinction from actual execution ('WITHOUT actually executing it'). It differentiates from siblings like 'assess_risk' or 'scan_contract' by focusing on transaction simulation rather than general risk assessment or contract scanning.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly states when to use this tool: 'to preview what will happen before sending a real transaction.' This provides clear context for usage versus alternatives, indicating it's for pre-execution testing rather than live operations.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 4 tool updatesv0.1.0
    • First observedassess_risk
    • First observedcheck_token
    • First observedscan_contract
    • First observedsimulate_transaction

TDQS

A4.4/5.0

Scored across 4 tools

Disambiguation5/5

Each tool has a clearly distinct purpose: assess_risk is a comprehensive all-in-one safety check, check_token focuses on token-specific scams, scan_contract analyzes contract code/bytecode, and simulate_transaction previews transaction outcomes. There is no overlap or ambiguity between these tools.

Naming Consistency5/5

All tool names follow a consistent verb_noun pattern (assess_risk, check_token, scan_contract, simulate_transaction), using snake_case throughout. The naming is predictable and readable across the entire set.

Tool Count5/5

With 4 tools, this server is well-scoped for DeFi security. Each tool earns its place by covering distinct aspects of safety assessment: holistic risk, token checks, contract analysis, and transaction simulation. This count is appropriate and avoids bloat.

Completeness5/5

The tool set provides complete coverage for DeFi security workflows: it includes comprehensive risk assessment (assess_risk), targeted checks for tokens and contracts, and transaction simulation. There are no obvious gaps—agents can perform end-to-end safety evaluations before any DeFi interaction.

Maintenance

ActivityInactive
ResponsivenessNo issues

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