once
Run a side effect exactly once under retries, redelivery, and concurrent workers.
Servidor MCP · de aurumflux20
Resumo
once é um servidor MCP publicado por aurumflux20. Marketplaces que lemos e que o listam: 1 (Official MCP Registry). Vimos pela primeira vez em 2026-10-11 e não registramos mudanças desde então. Conforme nossa passagem pelos marketplaces em 2026-10-13.
O que pede
- Roda na sua máquina
Nenhum dos marketplaces que lemos publica as ferramentas ou as configurações que ele pede.
O que declara, pede e executa, por completo
Instale apenas plugins de desenvolvedores em quem você confia. Mostramos o que os marketplaces publicam e não testamos plugins.
Pacote
PyPI once-kernel (once-kernel no PyPI)
- Downloads do PyPI por semana: 44 (2026-10-13)
- Downloads do PyPI por mês: 116 (2026-10-13)
- Última versão no PyPI: 0.2.1, publicada em 2026-08-07
Nenhuma vulnerabilidade conhecida no OSV para 0.2.1 (verificado em 2026-10-13)
Os dados do PyPI vêm do pypi.org e os downloads do PyPI do pypistats.org. Cada número é do próprio registro e nunca é somado a outro. Um registro que não publica um número não mostra nenhum: sem número não é zero. Os registros de vulnerabilidades vêm do OSV.dev (CC BY 4.0) e dizem respeito apenas à versão declarada; uma listagem sem versão declarada não recebe resposta. Não analisamos código.
Funciona com
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
Um link de um clique abre o cliente, que pede confirmação antes de adicionar o servidor.
Pelos marketplaces que o listam e pelo transporte MCP que declara, conforme cada cliente documenta. Não testamos plugins.
Conectar
Comandos e configurações gerados apenas a partir do que os marketplaces declaram. Não os executamos por você e não testamos plugins.
Como servidor MCP local: pacote PyPI
Gerado a partir do que Official MCP Registry declara.
claude mcp add --transport stdio once-kernel -- uvx once-kernel[mcp_servers.once-kernel]
command = "uvx"
args = ["once-kernel"]{
"mcpServers": {
"once-kernel": {
"command": "uvx",
"args": [
"once-kernel"
]
}
}
}Onde está publicado
| Marketplace | Status | Versão | Números | Verificado | Visto pela primeira vez |
|---|---|---|---|---|---|
| Official MCP Registry (Abrir o registro) | Listado | 0.2.1 | Downloads por mês (PyPI): 116 Downloads por semana (PyPI): 44 Forks (GitHub): 0 Estrelas (GitHub): 0 |
Sem marcação |
Cada número é do próprio marketplace e nunca é somado entre marketplaces. Um marketplace que não publica números não mostra nenhum: sem número não é zero.
O que mudou
Nada mudou neste plugin desde que começamos a acompanhá-lo.
Plugins semelhantes
Produtos cujos próprios nomes, descrições, ferramentas e skills são os mais próximos deste pelo significado, em todos os marketplaces que lemos. A proximidade é ordenada apenas dentro desta lista.
-
Stops agents double-firing side effects: 1,000 racing duplicates, exactly one execution.
-
once io.github.stringsofthemind-oss/once
Developer assessment/setup MCP; admitted Once boundaries protect writes, not sibling connectors.
-
ONCE — Exactly-Once Reliability for AI Agent Actions
Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.
-
POSTFACT — Resolve Ambiguous Side Effects Before Retry
Resolve whether an uncertain side-effecting action completed before software retries it.
-
safeagent io.github.azender1/safeagent
Exactly-once execution guard for AI agents. Prevents duplicate payments and webhooks on retry.
-
Cross-platform MCP server for managing long-lived background processes from any MCP client
-
Minimal stdio MCP server for parallel task execution by AI agents.
-
Schedule and manage recurring or one-shot tasks
-
An MCP server for deep research or task groups
-
Reliable async execution for agent tool calls: schema gating, retries, idempotency, audit trail.
Plugins semelhantes por marketplace
A mesma pergunta feita a cada marketplace separadamente: existe lá um equivalente deste plugin?
Listado em Claude Code: claude-plugins-community (5)
-
Teach Claude to orchestrate microservices and business processes with Conductor. This skill adds full workflow lifecycle management: define workflows with any task type (HTTP…
-
Schedule recurring Claude Code tasks with cron expressions
-
FastMCP server that pages on-call via 100+ notification channels (Apprise wrappe
FastMCP server that pages on-call via 100+ notification channels (Apprise wrapper)
-
Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a
Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, and triple-mode…
-
Strale agent skills with remote MCP connector for Strale platform integration.
Listado em Claude Code: claude-plugins-official (5)
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
-
Skills for designing and building MCP servers that work seamlessly with Claude. Guides you through deployment models (remote HTTP, MCPB, local), tool design patterns, auth, and…
-
MCP server for terminal commands, file operations, and process management
-
Easily create custom hooks to prevent unwanted behaviors by analyzing conversation patterns or from explicit instructions. Define rules via simple markdown files.
Listado em Claude: knowledge-work-plugins (5)
-
MCP server for terminal commands, file operations, and process management
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
Create, edit, and deploy ServiceNow applications with the Fluent SDK effortlessly through Claude AI.
-
Build and deploy on Val Town. Bundles the Val Town MCP server and platform skills (HTTP vals, cron/intervals, SQLite, email, OAuth, React UI, third-party integrations, templates).
-
Create, customize, and manage plugins tailored to your organization's tools and workflows. Configure MCP servers, adjust plugin behavior, and adapt templates to match how your…
Listado em Codex: openai-curated (openai/plugins) (5)
-
Comprehensive skill for the entire Temporal lifecycle — developing applications, using the Temporal CLI, running and managing Temporal Server, and working with Temporal Cloud.
-
Work with Slack using the configured Slack integration.
-
CrowdStrike Falcon Fusion skills for authoring, deploying, and executing Fusion workflows. Includes live action discovery, YAML authoring with schema validation, workflow import…
-
Skills for NVIDIAs ecosystem spans GPU acceleration, CUDA, AI agents, inference, robotics, Physical AI, Omniverse, and simulation. This plugin helps you understand the pieces…
-
An agentic skills framework & software development methodology that works: planning, TDD, debugging, and collaboration workflows.
Listado em Community GitHub marketplaces (5)
-
MCP server that sends work to Cursor Agent over ACP and returns the session id needed to continue.
-
Drive a self-hosted OpenCode instance as async background workers over MCP.
-
Opt-in Claude Code mod for MCP Task Orchestrator: live work graph, gate band, and in-process orchestration hooks (early-access function-hooks API)
-
orbit io.github.constellation-works/orbit
Orbit's local-first task and workflow registry for coding agents.
-
Tuning Engines - Governed AI Runtime
Govern model, agent, skill, and MCP workflows with policy, approvals, traces, and usage analytics.
Listado em Copilot CLI: github/awesome-copilot (5)
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
Complete toolkit for building Model Context Protocol servers in Java using the official MCP Java SDK with reactive streams and Spring Boot integration.
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
-
Three-agent workflow for orchestrated software delivery with an orchestrator plus implementation and QA subagents.
Listado em Copilot CLI: github/copilot-plugins (5)
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
power-automate
Build, edit, run, and debug Power Automate cloud flows via the FlowAgent MCP server — connection lifecycle, surgical edits, copy across environments, run management, and validated…
-
workiq-productivity
WorkIQ productivity skills powered by the local WorkIQ CLI — read-only insights across email, meetings, calendar, Teams, SharePoint, projects, and people.
-
model-apps
Build and deploy Power Apps generative pages for model-driven apps with specialist agents for planning, entity creation, and parallel code generation. Requires PAC CLI >= 2.7.0…
Listado em Cursor: cursor/plugins (5)
-
Fan large tasks out across parallel cloud agents with planners, workers, verifiers, and structured handoffs.
-
Let Grok Bot reach MCP servers on your private Tailscale network. Sign in to Tailscale to connect your tailnet; Grok Bot joins it as one tagged device and only reaches the hosts…
-
Build apps, scripts, and automations with the TypeScript SDK.
-
if you want to go fast, go deep first. pstack helps you write less, but higher quality code. rigorous agent workflows you can parallelize with confidence.
-
Iterative self-referential AI loops using the Ralph Wiggum technique.
Listado em Docker MCP Catalog (5)
-
Server-enforced workflow discipline for AI agents: work items, dependency graphs, quality gates
-
Remote MCP server for the Hackle Admin API: experiments, feature flags, remote config, messaging.
-
testkube-mcp io.github.kubeshop/testkube-mcp
MCP server for Testkube - Manage test workflows, executions, and artifacts via AI assistants
-
Manage Temporal workflows, schedules, namespaces, task queues, and workflow execution history from MCP clients.
-
A unified MCP proxy that aggregates multiple MCP servers into one interface, enabling seamless tool discovery and management across all your AI interactions. Manage all your MCP…
Listado em Official MCP Registry (5)
-
Stops agents double-firing side effects: 1,000 racing duplicates, exactly one execution.
-
once io.github.stringsofthemind-oss/once
Developer assessment/setup MCP; admitted Once boundaries protect writes, not sibling connectors.
-
ONCE — Exactly-Once Reliability for AI Agent Actions
Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.
-
POSTFACT — Resolve Ambiguous Side Effects Before Retry
Resolve whether an uncertain side-effecting action completed before software retries it.
-
safeagent io.github.azender1/safeagent
Exactly-once execution guard for AI agents. Prevents duplicate payments and webhooks on retry.
Encontrados pelo significado, não por código ou repositório em comum: plugins semelhantes continuam sendo produtos distintos, e isto não é uma avaliação nem uma recomendação.
Este plugin é seu?
Adicione-o aos seus projetos e prove que o mantém com um arquivo no repositório, um arquivo no seu domínio ou um registro DNS. Você recebe alertas quando um marketplace o publica, o remove, muda a marca de verificado ou o que ele pede, e o endpoint remoto passa a ser monitorado como um serviço web.
Dados de Official MCP Registry. Os números vêm das nossas próprias passagens regulares pelos marketplaces, última leitura em . Não publicamos dados de contato dos editores de plugins.