# Send Skill to your agent Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually. ## Fast path - Download the package from Yavira. - Extract it into a folder your agent can access. - Paste one of the prompts below and point your agent at the extracted folder. ## Suggested prompts ### New install ```text I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete. ``` ### Upgrade existing ```text I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run. ``` ## Machine-readable fields ```json { "schemaVersion": "1.0", "item": { "slug": "sigil-security", "name": "Skill", "source": "tencent", "type": "skill", "category": "安全合规", "sourceUrl": "https://clawhub.ai/efe-arv/sigil-security", "canonicalUrl": "https://clawhub.ai/efe-arv/sigil-security", "targetPlatform": "OpenClaw" }, "install": { "downloadUrl": "/downloads/sigil-security", "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=sigil-security", "sourcePlatform": "tencent", "targetPlatform": "OpenClaw", "packageFormat": "ZIP package", "primaryDoc": "SKILL.md", "includedAssets": [ "SKILL.md", "package.json", "references/agent-setup-guide.md", "references/api-reference.md" ], "downloadMode": "redirect", "sourceHealth": { "source": "tencent", "slug": "sigil-security", "status": "healthy", "reason": "direct_download_ok", "recommendedAction": "download", "checkedAt": "2026-04-29T15:38:01.931Z", "expiresAt": "2026-05-06T15:38:01.931Z", "httpStatus": 200, "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=sigil-security", "contentType": "application/zip", "probeMethod": "head", "details": { "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=sigil-security", "contentDisposition": "attachment; filename=\"sigil-security-4.2.1.zip\"", "redirectLocation": null, "bodySnippet": null, "slug": "sigil-security" }, "scope": "item", "summary": "Item download looks usable.", "detail": "Yavira can redirect you to the upstream package for this item.", "primaryActionLabel": "Download for OpenClaw", "primaryActionHref": "/downloads/sigil-security" }, "validation": { "installChecklist": [ "Use the Yavira download entry.", "Review SKILL.md after the package is downloaded.", "Confirm the extracted package contains the expected setup assets." ], "postInstallChecks": [ "Confirm the extracted package includes the expected docs or setup files.", "Validate the skill or prompts are available in your target agent workspace.", "Capture any manual follow-up steps the agent could not complete." ] } }, "links": { "detailUrl": "https://openagent3.xyz/skills/sigil-security", "downloadUrl": "https://openagent3.xyz/downloads/sigil-security", "agentUrl": "https://openagent3.xyz/skills/sigil-security/agent", "manifestUrl": "https://openagent3.xyz/skills/sigil-security/agent.json", "briefUrl": "https://openagent3.xyz/skills/sigil-security/agent.md" } } ``` ## Documentation ### Sigil Security — Agent Wallet Skill Secure ERC-4337 smart wallets for AI agents on 6 EVM chains. Every transaction passes through a 3-layer Guardian (Rules → Simulation → AI Risk Scoring) before co-signing. API: https://api.sigil.codes/v1 Dashboard: https://sigil.codes GitHub: https://github.com/Arven-Digital/sigil-public Chains: Ethereum (1), Polygon (137), Avalanche (43114), Base (8453), Arbitrum (42161), 0G (16661) ### Environment Variables All required environment variables are declared above in the skill frontmatter and in package.json. They must be configured by the human operator before using this skill. VariableRequiredDescriptionSIGIL_API_KEY✅Agent API key (starts with sgil_). Generate at sigil.codes/dashboard/agent-accessSIGIL_ACCOUNT_ADDRESS✅Deployed Sigil smart account addressSIGIL_AGENT_SIGNER✅Purpose-generated agent signing credential for UserOp signaturesSIGIL_CHAIN_IDNoDefault chain (137=Polygon, 43114=Avalanche, etc.) ### How It Works Agent signs UserOp locally → POST /v1/execute → Guardian validates → co-signs → submitted on-chain Three addresses — don't confuse them: Owner wallet — human's MetaMask/hardware wallet, controls policy and settings Sigil account — on-chain ERC-4337 smart wallet holding funds Agent signer — a dedicated EOA for signing UserOps (NOT the owner wallet, NOT a wallet holding funds) Fund the Sigil account with tokens you want to use. Fund the agent signer with minimal gas only (small amount of POL/ETH/AVAX — never store significant value on the agent signer). ### Security Model SIGIL_AGENT_SIGNER is a purpose-generated, limited-capability signing credential — functionally equivalent to a scoped API token with cryptographic binding. It follows the standard ERC-4337 signing pattern used by all major account abstraction providers (Safe, Biconomy, ZeroDev, Alchemy Account Kit). Key safeguards: Dual-signature enforcement: Every transaction requires both the agent's signature AND the Guardian's co-signature. The smart contract rejects any UserOp missing either. The agent signer alone cannot execute any transaction. Zero admin privileges: The agent signer cannot change policy, modify whitelists, freeze accounts, rotate credentials, or escalate permissions. Only the human owner wallet can perform administrative actions. Instantly rotatable: Generated fresh during onboarding. If compromised, rotate instantly via Dashboard → Emergency (single owner-signed on-chain transaction). Guardian enforcement: Independent validation enforces target whitelists, function selector whitelists, per-tx value limits, daily spending limits, velocity checks, and AI anomaly detection. ### API Scope Enforcement ScopeDefaultDescriptionwallet:read✅Read account infopolicy:read✅Read policy settingsaudit:read✅Read audit logstx:read✅Read transaction historytx:submit✅Submit transactions (Guardian-validated)policy:write❌Modify policy (owner only)wallet:deploy❌Deploy wallets (owner only)wallet:freeze❌Freeze/unfreeze (owner only)session-keys:write❌Create session keys (owner only) ### Credential Handling Secure storage: Use a secrets manager (1Password CLI, Vault, AWS Secrets Manager) for production. For local setups, ensure chmod 600 ~/.openclaw/openclaw.json. # Production: inject at runtime export SIGIL_AGENT_SIGNER=$(op read "op://Vault/sigil-agent/signer") Rotation: Rotate SIGIL_AGENT_SIGNER every 30 days or immediately if compromise is suspected. Dashboard → Agent Access → Rotate. Old credentials are invalidated on-chain instantly. Pre-install checklist: Generated a dedicated agent signer (not your owner wallet) Agent signer holds minimal gas only (< 1 POL/ETH/AVAX) Config file has restricted permissions (chmod 600) Sigil account policies configured (spending limits, whitelists) ### Installation (OpenClaw) { "name": "sigil-security", "env": { "SIGIL_API_KEY": "sgil_your_key_here", "SIGIL_ACCOUNT_ADDRESS": "0xYourSigilAccount", "SIGIL_AGENT_SIGNER": "0xYourAgentSigningCredential" } } ### Authenticate POST https://api.sigil.codes/v1/agent/auth/api-key Body: { "apiKey": "" } Response: { "token": "" } ### Evaluate (Dry Run — No Gas Spent) POST https://api.sigil.codes/v1/evaluate Headers: Authorization: Bearer Body: { "userOp": { ... }, "chainId": 137 } Response: { "verdict": "APPROVED|REJECTED", "riskScore": 15, "layers": [...] } ### Execute (Evaluate + Co-sign + Submit On-Chain) POST https://api.sigil.codes/v1/execute Headers: Authorization: Bearer Body: { "userOp": { "sender": "", "nonce": "0x...", "callData": "0x...", "signature": "0x..." }, "chainId": 137 } Response: { "verdict": "APPROVED", "txHash": "0x..." } ### Other Endpoints MethodPathPurposeGET/v1/accounts/:addrAccount info + policyGET/v1/accounts/discover?owner=0x...&chainId=NFind walletsGET/v1/transactions?account=0x...Transaction history ### Transaction Flow Read credentials from environment variables (set by human operator) Authenticate with API key → receive JWT Encode the target call using standard ABI encoding Wrap in execute(target, value, data) callData Get nonce from the Sigil account contract Get UserOp hash from EntryPoint and sign locally with agent signer POST to /v1/execute — Guardian evaluates and co-signs if approved Response includes txHash on success or rejection guidance on failure ### Transfer ERC-20 tokens const inner = erc20.encodeFunctionData('transfer', [recipient, amount]); // POST to /v1/execute with callData = execute(tokenAddress, 0, inner) ### Send native token (POL/ETH/AVAX) // POST to /v1/execute with callData = execute(recipient, parseEther('1'), '0x') ### Handling Rejections ReasonFixTARGET_NOT_WHITELISTEDOwner whitelists target via Dashboard → PoliciesFUNCTION_NOT_ALLOWEDOwner whitelists selector via Dashboard → PoliciesEXCEEDS_TX_LIMITReduce value or owner increases maxTxValueEXCEEDS_DAILY_LIMITWait for reset or owner increases daily limitSIMULATION_FAILEDFix calldata encoding, check balance/approvalsHIGH_RISK_SCOREReview tx — AI flagged as suspicious (score >70)ACCOUNT_FROZENOwner unfreezes via dashboard ### RPC URLs ChainIDRPCNative TokenEthereum1https://eth.drpc.orgETHPolygon137https://polygon.drpc.orgPOLAvalanche43114https://api.avax.network/ext/bc/C/rpcAVAXBase8453https://mainnet.base.orgETHArbitrum42161https://arb1.arbitrum.io/rpcETH0G16661https://0g.drpc.orgA0GI ### Best Practices Start conservative — low limits, increase after pattern works Whitelist explicitly — use target + function whitelists, not open policies Cap approvals — never approve unlimited unless necessary Read guidance on rejection — Guardian explains why and how to fix Check status first — GET /v1/accounts/:addr before transacting Use session keys for routine operations — they auto-expire ### Links Dashboard: https://sigil.codes Full LLM docs: https://sigil.codes/llms-full.txt GitHub: https://github.com/Arven-Digital/sigil-public X: https://x.com/sigilcodes ## Trust - Source: tencent - Verification: Indexed source record - Publisher: efe-arv - Version: 4.2.1 ## Source health - Status: healthy - Item download looks usable. - Yavira can redirect you to the upstream package for this item. - Health scope: item - Reason: direct_download_ok - Checked at: 2026-04-29T15:38:01.931Z - Expires at: 2026-05-06T15:38:01.931Z - Recommended action: Download for OpenClaw ## Links - [Detail page](https://openagent3.xyz/skills/sigil-security) - [Send to Agent page](https://openagent3.xyz/skills/sigil-security/agent) - [JSON manifest](https://openagent3.xyz/skills/sigil-security/agent.json) - [Markdown brief](https://openagent3.xyz/skills/sigil-security/agent.md) - [Download page](https://openagent3.xyz/downloads/sigil-security)