Xpersona

Crawler Summary

4d-v20 answer-first brief

Comprehensive 4D v20 development skill with embedded documentation. --- name: 4d-v20 description: Comprehensive 4D v20 development skill with embedded documentation. --- 4D v20 Development Skill This skill provides expert knowledge for developing in 4D v20. It includes embedded official documentation and best practice guides tailored for version 20. 📚 Documentation Router | Topic | Reference File | Description | | :--- | :--- | :--- | | **Language Syntax** | $1 | var, operators, con Capability contract not published. No trust telemetry is available yet. Last updated 4/14/2026.

Freshness

Last checked 4/14/2026

Best For

4d-v20 is best for general automation workflows where OpenClaw compatibility matters.

Not Ideal For

Contract metadata is missing or unavailable for deterministic execution.

Evidence Sources Checked

editorial-content, GITHUB OPENCLEW, runtime-metrics, public facts pack

CardFactsSnapshotContractTrust
Claim this agent
Agent DossierGitHubSafety: 94/100

4d-v20

Comprehensive 4D v20 development skill with embedded documentation. --- name: 4d-v20 description: Comprehensive 4D v20 development skill with embedded documentation. --- 4D v20 Development Skill This skill provides expert knowledge for developing in 4D v20. It includes embedded official documentation and best practice guides tailored for version 20. 📚 Documentation Router | Topic | Reference File | Description | | :--- | :--- | :--- | | **Language Syntax** | $1 | var, operators, con

OpenClawself-declared

Public facts

4

Change events

1

Artifacts

0

Freshness

Apr 14, 2026

Verifiededitorial-contentNo verified compatibility signals

Capability contract not published. No trust telemetry is available yet. Last updated 4/14/2026.

Trust evidence available

Trust score

Unknown

Compatibility

OpenClaw

Freshness

Apr 14, 2026

Vendor

Jaimealvarezv

Artifacts

0

Benchmarks

0

Last release

Unpublished

Executive Summary

Key links, install path, and a quick operational read before the deeper crawl record.

Verifiededitorial-content

Summary

Capability contract not published. No trust telemetry is available yet. Last updated 4/14/2026.

View Source

Setup snapshot

git clone https://github.com/jaimealvarezv/4d-development-skill-v20.git
  1. 1

    Setup complexity is LOW. This package is likely designed for quick installation with minimal external side-effects.

  2. 2

    Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Evidence Ledger

Everything public we have scraped or crawled about this agent, grouped by evidence type with provenance.

Verifiededitorial-content
Vendor (1)

Vendor

Jaimealvarezv

profilemedium
Observed Apr 14, 2026Source linkProvenance
Compatibility (1)

Protocol compatibility

OpenClaw

contractmedium
Observed Apr 14, 2026Source linkProvenance
Security (1)

Handshake status

UNKNOWN

trustmedium
Observed unknownSource linkProvenance
Integration (1)

Crawlable docs

6 indexed pages on the official domain

search_documentmedium
Observed Apr 15, 2026Source linkProvenance

Release & Crawl Timeline

Merged public release, docs, artifact, benchmark, pricing, and trust refresh events.

Self-declaredagent-index

Docs Update

Docs refreshed: Sign in to GitHub · GitHub

search_documentmedium

Fresh crawlable documentation was indexed for the official domain.

Observed Apr 15, 2026

Artifacts Archive

Extracted files, examples, snippets, parameters, dependencies, permissions, and artifact metadata.

Self-declaredGITHUB OPENCLEW

Extracted files

0

Examples

0

Snippets

0

Languages

typescript

Parameters

Docs & README

Full documentation captured from public sources, including the complete README when available.

Self-declaredGITHUB OPENCLEW

Docs source

GITHUB OPENCLEW

Editorial quality

ready

Comprehensive 4D v20 development skill with embedded documentation. --- name: 4d-v20 description: Comprehensive 4D v20 development skill with embedded documentation. --- 4D v20 Development Skill This skill provides expert knowledge for developing in 4D v20. It includes embedded official documentation and best practice guides tailored for version 20. 📚 Documentation Router | Topic | Reference File | Description | | :--- | :--- | :--- | | **Language Syntax** | $1 | var, operators, con

Full README

name: 4d-v20 description: Comprehensive 4D v20 development skill with embedded documentation.

4D v20 Development Skill

This skill provides expert knowledge for developing in 4D v20. It includes embedded official documentation and best practice guides tailored for version 20.

📚 Documentation Router

| Topic | Reference File | Description | | :--- | :--- | :--- | | Language Syntax | language-syntax.md | var, operators, control flow, v20 specifics. | | Data Types | data-types.md | Collections, Objects, Variants, typing rules. | | ORDA | orda-modern.md | Entity Selections, DataClass, optimization. | | Queries | query-patterns.md | Placeholders, formula queries, optimization. | | Error Handling | error-handling.md | ON ERR CALL, Try/Catch (check availability). | | Web & REST | web-and-rest.md | Web Server, REST API, HTTPRequest. | | Forms & UI | forms-and-ui.md | Form objects, events, list boxes. |

⚠️ Critical v20 Rules

  1. Variable Declaration: ALWAYS use var $name : Type. Avoid C_TEXT unless modifying legacy code.
  2. Assignment: Use := for assignment found in legacy/standard mode. v20 allows = in some contexts but := is safer for compatibility.
    • Note: If "Use standard assignment =" option is on, = is fine. Default to := to be safe.
  3. Collections vs Arrays: Prefer Collections ([]) and Objects ({}) over Arrays (ARRAY TEXT).
  4. Query Literals: Use placeholders (:1, :2) or : $var. NEVER concat strings into queries (SQL injection checks).
    • Safe: ds.Users.query("name = :1", $name)
  5. Null: Use Null keyword. Check with Unknown value or Assert helper if needed.
  6. Linked Collections: When using [table], remember it returns a selection. To get a collection, use ds.Table.all().toCollection().

🚫 v21+ Features to AVOID (v21-only)

Do NOT use the following features unless you are certain the project is v20 R7+ or v21:

  • HTTP Classes: 4D.IncomingMessage, 4D.OutgoingMessage (v20 R6+). Use On Web Connection / WEB GET BODY for standard v20 servers.
  • File Handles: 4D.File.Handle (v21). Use File and Document to text / Text to document or File.getContent().
  • Singleton Classes: shared singleton Class. Use Storage for singletons in v20.
  • Try/Catch: Available in v20 R4+. If base v20, use ON ERR CALL. Verify exact v20 R-release.

🔍 Searching Documentation

The official 4D v20 documentation is embedded in the docs/ directory. To find information about a command or class:

  1. Search References: Check references/ first for high-level patterns.
  2. Grep Docs: Use grep_search or find_by_name in docs/ folder.
    • Example: grep -r "HTTP Request" docs/
  3. API Index: See api-index.md for a map of standard commands.

REST Contract

When building REST APIs in v20:

  • Success: { "ok": true, "data": ... }
  • Error: { "ok": false, "error": { "code": 123, "message": "..." } }
  • Use Web Server class or On Web Connection database method.

Contract & API

Machine endpoints, protocol fit, contract coverage, invocation examples, and guardrails for agent-to-agent use.

MissingGITHUB OPENCLEW

Endpoints

Dossier APISnapshot APIContract APITrust API

Contract coverage

Status

missing

Auth

None

Streaming

No

Data region

Unspecified

Protocol support

OpenClaw: self-declared

Requires: none

Forbidden: none

Guardrails

Operational confidence: low

No positive guardrails captured.
Invocation examples
curl -s "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/snapshot"
curl -s "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/contract"
curl -s "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/trust"

Reliability & Benchmarks

Trust and runtime signals, benchmark suites, failure patterns, and practical risk constraints.

Missingruntime-metrics

Trust signals

Handshake

UNKNOWN

Confidence

unknown

Attempts 30d

unknown

Fallback rate

unknown

Runtime metrics

Observed P50

unknown

Observed P95

unknown

Rate limit

unknown

Estimated cost

unknown

Do not use if

Contract metadata is missing or unavailable for deterministic execution.
No benchmark suites or observed failure patterns are available.

Media & Demo

Every public screenshot, visual asset, demo link, and owner-provided destination tied to this agent.

Missingno-media
No screenshots, media assets, or demo links are available.

Related Agents

Neighboring agents from the same protocol and source ecosystem for comparison and shortlist building.

Self-declaredprotocol-neighbors
GITHUB_REPOSactivepieces

Rank

70

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

Traction

No public download signal

Freshness

Updated 2d ago

OPENCLAW
GITHUB_REPOScherry-studio

Rank

70

AI productivity studio with smart chat, autonomous agents, and 300+ assistants. Unified access to frontier LLMs

Traction

No public download signal

Freshness

Updated 5d ago

MCPOPENCLAW
GITHUB_REPOSAionUi

Rank

70

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!

Traction

No public download signal

Freshness

Updated 6d ago

MCPOPENCLAW
GITHUB_REPOSCopilotKit

Rank

70

The Frontend for Agents & Generative UI. React + Angular

Traction

No public download signal

Freshness

Updated 23d ago

OPENCLAW
Agent hubMore from this sourceOpenClaw agents
Machine Appendix

Contract JSON

{
  "contractStatus": "missing",
  "authModes": [],
  "requires": [],
  "forbidden": [],
  "supportsMcp": false,
  "supportsA2a": false,
  "supportsStreaming": false,
  "inputSchemaRef": null,
  "outputSchemaRef": null,
  "dataRegion": null,
  "contractUpdatedAt": null,
  "sourceUpdatedAt": null,
  "freshnessSeconds": null
}

Invocation Guide

{
  "preferredApi": {
    "snapshotUrl": "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/snapshot",
    "contractUrl": "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/contract",
    "trustUrl": "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/trust"
  },
  "curlExamples": [
    "curl -s \"https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/snapshot\"",
    "curl -s \"https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/contract\"",
    "curl -s \"https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/trust\""
  ],
  "jsonRequestTemplate": {
    "query": "summarize this repo",
    "constraints": {
      "maxLatencyMs": 2000,
      "protocolPreference": [
        "OPENCLEW"
      ]
    }
  },
  "jsonResponseTemplate": {
    "ok": true,
    "result": {
      "summary": "...",
      "confidence": 0.9
    },
    "meta": {
      "source": "GITHUB_OPENCLEW",
      "generatedAt": "2026-04-16T23:39:44.494Z"
    }
  },
  "retryPolicy": {
    "maxAttempts": 3,
    "backoffMs": [
      500,
      1500,
      3500
    ],
    "retryableConditions": [
      "HTTP_429",
      "HTTP_503",
      "NETWORK_TIMEOUT"
    ]
  }
}

Trust JSON

{
  "status": "unavailable",
  "handshakeStatus": "UNKNOWN",
  "verificationFreshnessHours": null,
  "reputationScore": null,
  "p95LatencyMs": null,
  "successRate30d": null,
  "fallbackRate": null,
  "attempts30d": null,
  "trustUpdatedAt": null,
  "trustConfidence": "unknown",
  "sourceUpdatedAt": null,
  "freshnessSeconds": null
}

Capability Matrix

{
  "rows": [
    {
      "key": "OPENCLEW",
      "type": "protocol",
      "support": "unknown",
      "confidenceSource": "profile",
      "notes": "Listed on profile"
    }
  ],
  "flattenedTokens": "protocol:OPENCLEW|unknown|profile"
}

Facts JSON

[
  {
    "factKey": "docs_crawl",
    "category": "integration",
    "label": "Crawlable docs",
    "value": "6 indexed pages on the official domain",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  },
  {
    "factKey": "vendor",
    "category": "vendor",
    "label": "Vendor",
    "value": "Jaimealvarezv",
    "href": "https://github.com/jaimealvarezv/4d-development-skill-v20",
    "sourceUrl": "https://github.com/jaimealvarezv/4d-development-skill-v20",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-04-14T22:26:36.319Z",
    "isPublic": true
  },
  {
    "factKey": "protocols",
    "category": "compatibility",
    "label": "Protocol compatibility",
    "value": "OpenClaw",
    "href": "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/contract",
    "sourceType": "contract",
    "confidence": "medium",
    "observedAt": "2026-04-14T22:26:36.319Z",
    "isPublic": true
  },
  {
    "factKey": "handshake_status",
    "category": "security",
    "label": "Handshake status",
    "value": "UNKNOWN",
    "href": "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/trust",
    "sourceUrl": "https://xpersona.co/api/v1/agents/jaimealvarezv-4d-development-skill-v20/trust",
    "sourceType": "trust",
    "confidence": "medium",
    "observedAt": null,
    "isPublic": true
  }
]

Change Events JSON

[
  {
    "eventType": "docs_update",
    "title": "Docs refreshed: Sign in to GitHub · GitHub",
    "description": "Fresh crawlable documentation was indexed for the official domain.",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  }
]

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Ads related to 4d-v20 and adjacent AI workflows.