# Send Skillsign — ed25519 Skill Signing 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. Then review README.md for any prerequisites, environment setup, or post-install checks. 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. Then review README.md for any prerequisites, environment setup, or post-install checks. Summarize what changed and any follow-up checks I should run. ``` ## Machine-readable fields ```json { "schemaVersion": "1.0", "item": { "slug": "skillsign", "name": "Skillsign — ed25519 Skill Signing", "source": "tencent", "type": "skill", "category": "安全合规", "sourceUrl": "https://clawhub.ai/FELMONON/skillsign", "canonicalUrl": "https://clawhub.ai/FELMONON/skillsign", "targetPlatform": "OpenClaw" }, "install": { "downloadUrl": "/downloads/skillsign", "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=skillsign", "sourcePlatform": "tencent", "targetPlatform": "OpenClaw", "packageFormat": "ZIP package", "primaryDoc": "SKILL.md", "includedAssets": [ "README.md", "setup.py", "SKILL.md", "skillsign.py" ], "downloadMode": "redirect", "sourceHealth": { "source": "tencent", "status": "healthy", "reason": "direct_download_ok", "recommendedAction": "download", "checkedAt": "2026-04-23T16:43:11.935Z", "expiresAt": "2026-04-30T16:43:11.935Z", "httpStatus": 200, "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=4claw-imageboard", "contentType": "application/zip", "probeMethod": "head", "details": { "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=4claw-imageboard", "contentDisposition": "attachment; filename=\"4claw-imageboard-1.0.1.zip\"", "redirectLocation": null, "bodySnippet": null }, "scope": "source", "summary": "Source download looks usable.", "detail": "Yavira can redirect you to the upstream package for this source.", "primaryActionLabel": "Download for OpenClaw", "primaryActionHref": "/downloads/skillsign" }, "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/skillsign", "downloadUrl": "https://openagent3.xyz/downloads/skillsign", "agentUrl": "https://openagent3.xyz/skills/skillsign/agent", "manifestUrl": "https://openagent3.xyz/skills/skillsign/agent.json", "briefUrl": "https://openagent3.xyz/skills/skillsign/agent.md" } } ``` ## Documentation ### skillsign Cryptographic signing and verification for agent skill folders using ed25519 keys. Protects your skills from tampering and lets you verify who wrote them. ### Install pip3 install cryptography That's the only dependency. The tool is a single Python file. ### Generate a signing identity python3 skillsign.py keygen python3 skillsign.py keygen --name myagent Creates an ed25519 keypair in ~/.skillsign/keys/. Share the .pub file. Keep the .pem file secret. ### Sign a skill folder python3 skillsign.py sign ./my-skill/ python3 skillsign.py sign ./my-skill/ --key ~/.skillsign/keys/myagent.pem Hashes every file (SHA-256), builds a manifest, signs it with your private key. Creates .skillsig/ inside the folder. ### Verify a skill folder python3 skillsign.py verify ./my-skill/ Detects modified, added, or removed files. Verifies the cryptographic signature. Shows whether the signer is trusted. ### Inspect signature metadata python3 skillsign.py inspect ./my-skill/ Shows signer fingerprint, timestamp, file count, and all covered files with their hashes. ### Trust an author python3 skillsign.py trust ./their-key.pub Adds a public key to your local trusted authors list. ### List trusted authors python3 skillsign.py trusted ### View provenance chain (isnād) python3 skillsign.py chain ./my-skill/ Shows the full signing history — every author who signed the folder, in order. ### When to Use After installing a new skill — verify it hasn't been tampered with Before running untrusted code — check who signed it and whether you trust them Periodically — re-verify your skill folders to detect unauthorized modifications When publishing skills — sign your work so others can verify it came from you When auditing your agent's integrity — run verify on all your skill folders ### Example Workflow # First time: create your identity python3 skillsign.py keygen --name parker # Sign your skills python3 skillsign.py sign ~/.openclaw/skills/my-skill/ # Later: check nothing changed python3 skillsign.py verify ~/.openclaw/skills/my-skill/ # ✅ Verified — 14 files intact. # Signer: ca3458e92b73e432 [TRUSTED] # Someone tampers with a file: python3 skillsign.py verify ~/.openclaw/skills/my-skill/ # ❌ TAMPERED — Files changed since signing: # ~ main.py (modified) # Trust another agent's key python3 skillsign.py trust ./other-agent.pub # View full provenance python3 skillsign.py chain ~/.openclaw/skills/my-skill/ # === Isnād: my-skill/ (2 links) === # [1] ca3458e92b73e432 [TRUSTED] # ↓ # [2] f69159d8a25e8e32 [UNTRUSTED] ## Trust - Source: tencent - Verification: Indexed source record - Publisher: FELMONON - Version: 1.1.0 ## Source health - Status: healthy - Source download looks usable. - Yavira can redirect you to the upstream package for this source. - Health scope: source - Reason: direct_download_ok - Checked at: 2026-04-23T16:43:11.935Z - Expires at: 2026-04-30T16:43:11.935Z - Recommended action: Download for OpenClaw ## Links - [Detail page](https://openagent3.xyz/skills/skillsign) - [Send to Agent page](https://openagent3.xyz/skills/skillsign/agent) - [JSON manifest](https://openagent3.xyz/skills/skillsign/agent.json) - [Markdown brief](https://openagent3.xyz/skills/skillsign/agent.md) - [Download page](https://openagent3.xyz/downloads/skillsign)