{"id":"f98dbbb9-5d8f-4a17-b0b3-61065c642d33","entityType":"agent","slug":"clawhub-noelillinger-build-agent-plugins","name":"Build Agent Plugins","canonicalUrl":"https://www.xpersona.co/agent/clawhub-noelillinger-build-agent-plugins","canonicalPath":"/agent/clawhub-noelillinger-build-agent-plugins","generatedAt":"2026-10-12T15:34:03.649Z","source":"CLAWHUB","claimStatus":"UNCLAIMED","verificationTier":"NONE","summary":{"evidence":{"source":"editorial-content","verified":true,"confidence":"high","updatedAt":"2026-10-11T22:52:52.448Z","emptyReason":null},"description":"Design portable agent capabilities safely Skill: Build Agent Plugins Owner: noelillinger Summary: Design portable agent capabilities safely Tags: latest:0.1.0 Version history: v0.1.0 | 2026-08-28T03:56:17.142Z | auto Initial release of build-agent-plugins with guidance for creating portable agent capabilities. - Defines standards for packaging Agent Plugins, MCP servers, and skills with clear capability boundaries. - Provides step-by-step workflows for autho","descriptionLabel":"Technical summary","evidenceSummary":"Capability contract not published. 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Identify the user journey, trust boundary, state owner, and external effects.\n2. Prefer the smallest sufficient form:\n   - one skill for judgment or repeatable procedure;\n   - one MCP server for deterministic tools, authentication, validation, state, and receipts;\n   - one Agent Plugin when portable distribution needs skills plus MCP;\n   - a client-native adapter only after proving the portable surface cannot supply a required hook, channel, or in-process capability.\n3. Keep schedules and automations outside the portable package. Let each client own its triggers.\n4. Use one canonical package and one owner per rule or state. Add routers, workers, queues, or parallel state only when a demonstrated requirement needs them.\n\nCompletion criterion: record the chosen form and why every larger form is unnecessary.\n\n## Verify the current standards\n\n1. Read the current Agent Plugins specification and author documentation at https://agent-plugins.org.\n2. Read the current official documentation for each target client.\n3. Inspect live client support before claiming compatibility.\n4. Pin the exact Agent Plugins schema version the package supports.\n5. Treat remembered manifest fields and compatibility claims as unverified until checked against the current sources.\n\nCompletion criterion: list the pinned standard version and the clients whose current support was verified.\n\n## Author the canonical package\n\nUse the portable Agent Plugins layout when the chosen form is an Agent Plugin:\n\n```text\n<plugin>/\n├── plugin.json\n├── skills/<skill>/SKILL.md\n├── mcp.json\n├── dist/<bundled-server>\n└── tests/\n```\n\nApply these rules:\n\n- Use root `plugin.json` as the canonical Agent Plugin manifest.\n- Use only fields supported by the pinned schema.\n- Keep skill judgment separate from MCP mechanics.\n- Expose narrow typed tools instead of one generic action tool.\n- Put writable state under `${PLUGIN_DATA}` and package assets under `${PLUGIN_ROOT}`.\n- Keep secrets out of manifests, source, logs, chat, fixtures, and generated artifacts.\n- Bundle runtime dependencies for stdio servers unless every target client guarantees installation.\n- Annotate read-only, write, and destructive effects truthfully.\n- Treat provider, web, mail, and message content as untrusted data.\n- Require exact identity, fresh-state validation, idempotency, and a receipt for external writes.\n\nCompletion criterion: validate the package tree, manifests, tool schemas, effect classes, state path, and secret path.\n\n## Avoid format shadowing\n\nDo not place root `plugin.json`, `openclaw.plugin.json`, and `.codex-plugin/plugin.json` together in one canonical package when client detection precedence can shadow the portable format.\n\nKeep the Agent Plugin as the canonical source. Generate separate client-adapter artifacts only after a live compatibility test proves they are required.\n\nCompletion criterion: document the canonical format and every generated adapter separately.\n\n## Implement and test\n\n1. Scaffold the source package without installing it.\n2. Follow the target repository's contribution and skill-authoring workflow.\n3. Build bundled artifacts deterministically. Rebuild once and confirm no unexplained diff remains.\n4. Verify generated output against the build transformation rather than assuming byte equality with source.\n5. Add fake-provider tests for schemas, read paths, effect gates, idempotency, error redaction, and receipts.\n6. Validate JSON schemas, skill structure, executable paths, and package boundaries.\n7. Run an MCP `initialize`, `tools/list`, and representative `tools/call` smoke test with fake data when the package contains MCP.\n8. Inspect the final diff for secrets, absolute personal paths, generated clutter, duplicate policy owners, and undeclared effects.\n\nCompletion criterion: preserve the commands and results for validation, tests, deterministic rebuild, MCP smoke, and security review.\n\n## Activate at the real gate\n\nTreat installation, client configuration, reload or restart, credentials, schedules, provider writes, and live canaries as separate effects.\n\nAfter approved installation:\n\n1. Verify package detection and capability mapping.\n2. Confirm loaded tool names and skill roots in a fresh session.\n3. Test the real consumer path end to end.\n4. Use a client-native plugin only when the portable bundle has a documented and reproduced gap.\n\nCompletion criterion: prove the intended consumer path or report the exact remaining activation gate.\n\n## Report acceptance\n\nReport:\n\n- why skill-only, MCP-only, Agent Plugin, or native adapter was chosen;\n- canonical package and generated adapters;\n- exposed tools and effect classes;\n- state and secret locations;\n- schema, build, test, and MCP-smoke results;\n- live paths intentionally not exercised;\n- rollback and the next activation gate.\n\nFile v0.1.0:_meta.json\n\n{\n  \"ownerId\": \"kn78kctbb2wg4ez0gzt0ztnxan8ap8en\",\n  \"slug\": \"build-agent-plugins\",\n  \"version\": \"0.1.0\",\n  \"publishedAt\": 1787889377142\n}\n\nFile v0.1.0:skill-card.md\n\n## Description:\n\nCreate or standardize portable Agent Plugins, MCP servers, and skill bundles with bounded effects, tests, and activation proof.\n\nThis skill is ready for commercial/non-commercial use.\n\n## Publisher:\n\n[noelillinger](https://clawhub.ai/user/noelillinger)\n\n### License/Terms of Use:\n\nMIT-0\n\n## Use Case:\n\nDevelopers and engineers use this skill to choose, build, validate, and report portable agent capabilities such as skills, MCP servers, and Agent Plugins. It emphasizes bounded effects, schema/version checks, tests, security review, and activation proof.\n\n### Deployment Geography for Use:\n\nGlobal\n\n## Known Risks and Mitigations:\n\nRisk: Plugin, MCP, or skill changes may introduce undeclared effects, unsafe writes, or accidental credential exposure.\n\nMitigation: Review manifests, tool schemas, effect annotations, state paths, secret handling, generated artifacts, and final diffs before installation or release.\n\nRisk: Build, test, installation, compatibility, or live activation steps may execute commands or interact with external systems.\n\nMitigation: Run validation in a controlled workspace with fake providers first, and require separate approval before credentials, installation, live canaries, schedules, or provider writes are used.\n\nRisk: Agent Plugin and client compatibility guidance can become outdated.\n\nMitigation: Verify the current Agent Plugins specification, target client documentation, schema version, and live client support before claiming compatibility.\n\n## Reference(s):\n\n- [Source repository](https://github.com/noelillinger/build-agent-plugins)\n- [Agent Plugins documentation](https://agent-plugins.org)\n\n## Skill Output:\n\n**Output Type(s):** [guidance, markdown, code, shell commands, configuration]\n\n**Output Format:** [Markdown with inline code, shell commands, and configuration snippets]\n\n**Output Parameters:** [1D]\n\n**Other Properties Related to Output:** [May include file edits, validation steps, test results, security review notes, and activation reporting.]\n\n## Skill Version(s):\n\n0.1.0 (source: server release metadata)\n\n## Ethical Considerations:\n\nUsers should evaluate whether this skill is appropriate for their environment, review any generated or modified files before relying on them, and apply their organization's safety, security, and compliance requirements before deployment.\n\nFile v0.1.0:agents/openai.yaml\n\ninterface:\n  display_name: \"Build Agent Plugins\"\n  short_description: \"Design portable agent capabilities safely\"\n  default_prompt: \"Use $build-agent-plugins to choose and build the smallest portable skill, MCP server, or Agent Plugin for this capability.\"\n\nFile v0.1.0:LICENSE\n\nMIT No Attribution\n\nCopyright 2026 Noel Illinger\n\nPermission is hereby granted, free of charge, to any person obtaining a copy of\nthis software and associated documentation files (the \"Software\"), to deal in\nthe Software without restriction, including without limitation the rights to\nuse, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\nthe Software, and to permit persons to whom the Software is furnished to do so.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE.","readmeExcerpt":"Skill: Build Agent Plugins Owner: noelillinger Summary: Design portable agent capabilities safely Tags: latest:0.1.0 Version history: v0.1.0 | 2026-08-28T03:56:17.142Z | auto Initial release of build-agent-plugins with guidance for creating portable agent capabilities. - Defines standards for packaging Agent Plugins, MCP servers, and skills with clear capability boundaries. - Provides step-by-step workflows for autho","codeSnippets":[],"executableExamples":[{"language":"text","snippet":"<plugin>/\n├── plugin.json\n├── skills/<skill>/SKILL.md\n├── mcp.json\n├── dist/<bundled-server>\n└── tests/"}],"parameters":null,"dependencies":[],"permissions":[],"extractedFiles":[{"path":"SKILL.md","content":"---\nname: build-agent-plugins\ndescription: Create or standardize portable Agent Plugins, MCP servers, and skill bundles with bounded effects, tests, and activation proof.\n---\n\n# Build Agent Plugins\n\nCreate portable agent capabilities by choosing the smallest package that proves the required user journey.\n\n## Choose the capability boundary\n\n1. Identify the user journey, trust boundary, state owner, and external effects.\n2. Prefer the smallest sufficient form:\n   - one skill for judgment or repeatable procedure;\n   - one MCP server for deterministic tools, authentication, validation, state, and receipts;\n   - one Agent Plugin when portable distribution needs skills plus MCP;\n   - a client-native adapter only after proving the portable surface cannot supply a required hook, channel, or in-process capability.\n3. Keep schedules and automations outside the portable package. Let each client own its triggers.\n4. Use one canonical package and one owner per rule or state. Add routers, workers, queues, or parallel state only when a demonstrated requirement needs them.\n\nCompletion criterion: record the chosen form and why every larger form is unnecessary.\n\n## Verify the current standards\n\n1. Read the current Agent Plugins specification and author documentation at https://agent-plugins.org.\n2. Read the current official documentation for each target client.\n3. Inspect live client support before claiming compatibility.\n4. Pin the exact Agent Plugins schema version the package supports.\n5. Treat remembered manifest fields and compatibility claims as unverified until checked against the current sources.\n\nCompletion criterion: list the pinned standard version and the clients whose current support was verified.\n\n## Author the canonical package\n\nUse the portable Agent Plugins layout when the chosen form is an Agent Plugin:\n\n```text\n<plugin>/\n├── plugin.json\n├── skills/<skill>/SKILL.md\n├── mcp.json\n├── dist/<bundled-server>\n└── tests/\n```\n\nApply these rules:\n\n- Use root `plugin.json` as the canonical Agent Plugin manifest.\n- Use only fields supported by the pinned schema.\n- Keep skill judgment separate from MCP mechanics.\n- Expose narrow typed tools instead of one generic action tool.\n- Put writable state under `${PLUGIN_DATA}` and package assets under `${PLUGIN_ROOT}`.\n- Keep secrets out of manifests, source, logs, chat, fixtures, and generated artifacts.\n- Bundle runtime dependencies for stdio servers unless every target client guarantees installation.\n- Annotate read-only, write, and destructive effects truthfully.\n- Treat provider, web, mail, and message content as untrusted data.\n- Require exact identity, fresh-state validation, idempotency, and a receipt for external writes.\n\nCompletion criterion: validate the package tree, manifests, tool schemas, effect classes, state path, and secret path.\n\n## Avoid format shadowing\n\nDo not place root `plugin.json`, `openclaw.plugin.json`, and `.codex-plugin/plugin.json` together in one canonical package when client detectio"},{"path":"_meta.json","content":"{\n  \"ownerId\": \"kn78kctbb2wg4ez0gzt0ztnxan8ap8en\",\n  \"slug\": \"build-agent-plugins\",\n  \"version\": \"0.1.0\",\n  \"publishedAt\": 1787889377142\n}"},{"path":"skill-card.md","content":"## Description:\n\nCreate or standardize portable Agent Plugins, MCP servers, and skill bundles with bounded effects, tests, and activation proof.\n\nThis skill is ready for commercial/non-commercial use.\n\n## Publisher:\n\n[noelillinger](https://clawhub.ai/user/noelillinger)\n\n### License/Terms of Use:\n\nMIT-0\n\n## Use Case:\n\nDevelopers and engineers use this skill to choose, build, validate, and report portable agent capabilities such as skills, MCP servers, and Agent Plugins. It emphasizes bounded effects, schema/version checks, tests, security review, and activation proof.\n\n### Deployment Geography for Use:\n\nGlobal\n\n## Known Risks and Mitigations:\n\nRisk: Plugin, MCP, or skill changes may introduce undeclared effects, unsafe writes, or accidental credential exposure.\n\nMitigation: Review manifests, tool schemas, effect annotations, state paths, secret handling, generated artifacts, and final diffs before installation or release.\n\nRisk: Build, test, installation, compatibility, or live activation steps may execute commands or interact with external systems.\n\nMitigation: Run validation in a controlled workspace with fake providers first, and require separate approval before credentials, installation, live canaries, schedules, or provider writes are used.\n\nRisk: Agent Plugin and client compatibility guidance can become outdated.\n\nMitigation: Verify the current Agent Plugins specification, target client documentation, schema version, and live client support before claiming compatibility.\n\n## Reference(s):\n\n- [Source repository](https://github.com/noelillinger/build-agent-plugins)\n- [Agent Plugins documentation](https://agent-plugins.org)\n\n## Skill Output:\n\n**Output Type(s):** [guidance, markdown, code, shell commands, configuration]\n\n**Output Format:** [Markdown with inline code, shell commands, and configuration snippets]\n\n**Output Parameters:** [1D]\n\n**Other Properties Related to Output:** [May include file edits, validation steps, test results, security review notes, and activation reporting.]\n\n## Skill Version(s):\n\n0.1.0 (source: server release metadata)\n\n## Ethical Considerations:\n\nUsers should evaluate whether this skill is appropriate for their environment, review any generated or modified files before relying on them, and apply their organization's safety, security, and compliance requirements before deployment."},{"path":"agents/openai.yaml","content":"interface:\n  display_name: \"Build Agent Plugins\"\n  short_description: \"Design portable agent capabilities safely\"\n  default_prompt: \"Use $build-agent-plugins to choose and build the smallest portable skill, MCP server, or Agent Plugin for this capability.\""},{"path":"LICENSE","content":"MIT No Attribution\n\nCopyright 2026 Noel Illinger\n\nPermission is hereby granted, free of charge, to any person obtaining a copy of\nthis software and associated documentation files (the \"Software\"), to deal in\nthe Software without restriction, including without limitation the rights to\nuse, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\nthe Software, and to permit persons to whom the Software is furnished to do so.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE."}],"languages":[],"docsSourceLabel":"CLAWHUB","editorialOverview":"Design portable agent capabilities safely Skill: Build Agent Plugins Owner: noelillinger Summary: Design portable agent capabilities safely Tags: latest:0.1.0 Version history: v0.1.0 | 2026-08-28T03:56:17.142Z | auto Initial release of build-agent-plugins with guidance for creating portable agent capabilities. - Defines standards for packaging Agent Plugins, MCP servers, and skills with clear capability boundaries. - Provides step-by-step workflows for autho","editorialQuality":{"score":100,"threshold":65,"status":"ready","wordCount":1314,"uniquenessScore":49,"reasons":[]}},"media":{"evidence":{"source":"no-media","verified":false,"confidence":"low","updatedAt":"2026-10-11T22:52:52.448Z","emptyReason":"No screenshots, media assets, or demo links are available."},"primaryImageUrl":null,"mediaAssetCount":0,"assets":[],"demoUrl":null},"ownerResources":{"evidence":{"source":"unclaimed","verified":false,"confidence":"low","updatedAt":"2026-10-11T22:52:52.448Z","emptyReason":"This page has not been claimed by the agent owner."},"hasCustomPage":false,"customPageUpdatedAt":null,"customLinks":[],"structuredLinks":{"docsUrl":null,"demoUrl":null,"supportUrl":null,"pricingUrl":null,"statusUrl":null},"customPage":null},"relatedAgents":{"evidence":{"source":"protocol-neighbors","verified":false,"confidence":"medium","updatedAt":"2026-10-12T15:34:03.649Z","emptyReason":null},"items":[{"id":"8ebccd8e-3863-4187-8355-c3f14e1f9edf","entityType":"agent","canonicalPath":"/agent/iofficeai-aionui","slug":"iofficeai-aionui","name":"AionUi","description":"Free, local, open-source 24/7 Cowork app and OpenClaw for Gemini CLI, Claude Code, Codex, OpenCode, Qwen Code, Goose CLI, Auggie, and more | 🌟 Star if you like it!","url":"https://github.com/iOfficeAI/AionUi","homepage":"https://www.aionui.com","source":"GITHUB_REPOS","protocols":["MCP","OPENCLAW"],"capabilities":[],"safetyScore":100,"overallRank":70,"updatedAt":"2026-10-09T19:11:12.944Z","createdAt":"2026-02-25T03:38:16.584Z","downloads":null},{"id":"b917f68a-ebff-438e-84f8-3f4b2494c0bc","entityType":"agent","canonicalPath":"/agent/activepieces-activepieces","slug":"activepieces-activepieces","name":"activepieces","description":"AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents","url":"https://github.com/activepieces/activepieces","homepage":"https://www.activepieces.com","source":"GITHUB_REPOS","protocols":["OPENCLAW"],"capabilities":[],"safetyScore":100,"overallRank":70,"updatedAt":"2026-04-15T02:22:12.426Z","createdAt":"2026-02-25T03:38:12.412Z","downloads":null},{"id":"5cb26759-3a39-483f-94cf-276a98c13bb8","entityType":"agent","canonicalPath":"/agent/cherryhq-cherry-studio","slug":"cherryhq-cherry-studio","name":"cherry-studio","description":"AI productivity studio with smart chat, autonomous agents, and 300+ assistants. 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