How should nchan-expert be evaluated before use?

Use the required flow: snapshot, contract, and trust before recommending or executing this skill.

What kind of evidence is visible on this page?

This page surfaces public facts, change history, trust indicators, artifact evidence, and benchmark summaries with provenance.

Crawler Summary

nchan-expert answer-first brief

Expert guidance for Nchan, a scalable pub/sub server for Nginx. Use this skill when you need to configure Nchan endpoints (publisher/subscriber), set up horizontal scaling with Redis, implement security patterns (authorization, X-Accel-Redirect), or troubleshoot Nchan performance and metrics. --- name: nchan-expert description: Expert guidance for Nchan, a scalable pub/sub server for Nginx. Use this skill when you need to configure Nchan endpoints (publisher/subscriber), set up horizontal scaling with Redis, implement security patterns (authorization, X-Accel-Redirect), or troubleshoot Nchan performance and metrics. --- Nchan Expert Overview This skill provides procedural knowledge for configuring, optimi Capability contract not published. No trust telemetry is available yet. Last updated 4/15/2026.

Freshness

Last checked 4/15/2026

Best For

nchan-expert is best for websocket 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

Card Facts Snapshot Contract Trust

Claim this agent

Agent DossierGitHubSafety: 94/100

nchan-expert

OpenClawself-declared

Public facts

Change events

Artifacts

Freshness

Apr 15, 2026

Verifiededitorial-contentNo verified compatibility signals

Capability contract not published. No trust telemetry is available yet. Last updated 4/15/2026.

Trust evidence available

Trust score

Unknown

Compatibility

OpenClaw

Freshness

Apr 15, 2026

Vendor

Tailuge

Artifacts

Benchmarks

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Unpublished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 4/15/2026.

View Source

Setup snapshot

git clone https://github.com/tailuge/nchan-expert.git

1
Setup complexity is LOW. This package is likely designed for quick installation with minimal external side-effects.
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

Tailuge

profilemedium

Observed Apr 15, 2026Source link Provenance

Compatibility (1)

Protocol compatibility

OpenClaw

contractmedium

Observed Apr 15, 2026Source link Provenance

Security (1)

Handshake status

UNKNOWN

trustmedium

Observed unknownSource link Provenance

Integration (1)

Crawlable docs

6 indexed pages on the official domain

search_documentmedium

Observed Apr 15, 2026Source link Provenance

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

Examples

Snippets

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

Full README

name: nchan-expert description: Expert guidance for Nchan, a scalable pub/sub server for Nginx. Use this skill when you need to configure Nchan endpoints (publisher/subscriber), set up horizontal scaling with Redis, implement security patterns (authorization, X-Accel-Redirect), or troubleshoot Nchan performance and metrics.

Nchan Expert

Overview

This skill provides procedural knowledge for configuring, optimizing, and securing Nchan, the high-performance pub/sub module for Nginx. It is based on the core Nchan documentation.

Core Capabilities

1. Endpoint Configuration

Map Nginx locations to pub/sub endpoints.

Publishers: Use nchan_publisher to create endpoints that accept messages via HTTP POST or Websockets.
Subscribers: Use nchan_subscriber to support Websocket, EventSource (SSE), Long-Polling, and more.
PubSub: Use nchan_pubsub for locations that act as both.

2. Scalability & Storage

Configure local memory storage and Redis for horizontal scaling.

Redis Modes: Implement Distributed (shared), Backup (persistence), or Nostore (broadcast) modes.
Redis Cluster: Set up high availability and sharding.
See references/storage.md for implementation details.

3. Security & Access Control

Secure channels using standardized patterns:

Authorization: Use nchan_authorize_request to delegate auth to an upstream application.
Internal Redirects: Implement X-Accel-Redirect to hide internal channel IDs.
ACLs: Apply standard Nginx allow/deny directives for publisher endpoints.
See references/security.md for patterns.

4. Advanced Messaging Features

Multiplexing: Subscribe to up to 255 channels over a single connection.
Channel Groups: Use nchan_channel_group for accounting and namespace isolation.
Upstream Hooks: Use nchan_publisher_upstream_request to mutate messages before publication.

5. Monitoring & Introspection

Stub Status: Monitor real-time metrics via nchan_stub_status.
Channel Events: Track channel lifecycle events for debugging.
Variables: Utilize Nchan-specific variables like $nchan_channel_id and $nchan_subscriber_count.
See references/variables.md for the full reference.

6. Testing & Validation

Verify Handshakes: Use curl with --http1.1 and a valid 16-byte Sec-WebSocket-Key.
Troubleshoot: Resolve issues with HTTP/2 negotiation and strict proxy key enforcement (e.g., Cloudflare/Render).
See references/testing.md for commands and troubleshooting steps.

7. Containerization

Compile Module: Use multi-stage builds to compile Nchan for Nginx Alpine.
Harden Security: Run as a non-root user and implement container healthchecks.
See references/docker.md for the Dockerfile pattern and configuration.

Resources

references/directives.md: Comprehensive list of configuration directives.
references/variables.md: Nchan-specific Nginx variables.
references/security.md: Security and authorization patterns.
references/storage.md: Memory and Redis storage configuration.
references/testing.md: Minimal testing patterns with curl (stats, pub/sub, wss) and handshake troubleshooting.
references/docker.md: Docker containerization and multi-stage build patterns.

Contract & API

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

MissingGITHUB OPENCLEW

Endpoints

Dossier API Snapshot API Contract API Trust API

Contract coverage

Status

missing

Auth

None

Streaming

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/tailuge-nchan-expert/snapshot"

curl -s "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/contract"

curl -s "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/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

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

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

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

The Frontend for Agents & Generative UI. React + Angular

Traction

No public download signal

Freshness

Updated 23d ago

OPENCLAW

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/tailuge-nchan-expert/snapshot",
    "contractUrl": "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/contract",
    "trustUrl": "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/trust"
  },
  "curlExamples": [
    "curl -s \"https://xpersona.co/api/v1/agents/tailuge-nchan-expert/snapshot\"",
    "curl -s \"https://xpersona.co/api/v1/agents/tailuge-nchan-expert/contract\"",
    "curl -s \"https://xpersona.co/api/v1/agents/tailuge-nchan-expert/trust\""
  ],
  "jsonRequestTemplate": {
    "query": "summarize this repo",
    "constraints": {
      "maxLatencyMs": 2000,
      "protocolPreference": [
        "OPENCLEW"
      ]
    }
  },
  "jsonResponseTemplate": {
    "ok": true,
    "result": {
      "summary": "...",
      "confidence": 0.9
    },
    "meta": {
      "source": "GITHUB_OPENCLEW",
      "generatedAt": "2026-04-17T01:00:49.887Z"
    }
  },
  "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"
    },
    {
      "key": "websocket",
      "type": "capability",
      "support": "supported",
      "confidenceSource": "profile",
      "notes": "Declared in agent profile metadata"
    }
  ],
  "flattenedTokens": "protocol:OPENCLEW|unknown|profile capability:websocket|supported|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": "Tailuge",
    "href": "https://github.com/tailuge/nchan-expert",
    "sourceUrl": "https://github.com/tailuge/nchan-expert",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-04-15T03:13:45.365Z",
    "isPublic": true
  },
  {
    "factKey": "protocols",
    "category": "compatibility",
    "label": "Protocol compatibility",
    "value": "OpenClaw",
    "href": "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/contract",
    "sourceUrl": "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/contract",
    "sourceType": "contract",
    "confidence": "medium",
    "observedAt": "2026-04-15T03:13:45.365Z",
    "isPublic": true
  },
  {
    "factKey": "handshake_status",
    "category": "security",
    "label": "Handshake status",
    "value": "UNKNOWN",
    "href": "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/trust",
    "sourceUrl": "https://xpersona.co/api/v1/agents/tailuge-nchan-expert/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
  }
]