---
title: "simplicio"
description: "Governed local-first coding through the verified Simplicio Runtime MCP and portable agent skills."
canonical: https://agentpluginsdirectory.com/plugins/simplicio--simpletibr
last-updated: 2026-09-18
---

# simplicio
Governed local-first coding through the verified Simplicio Runtime MCP and portable agent skills.
- Slug: simplicio--simpletibr
- Publisher: Wesley Simplicio
- Repository: https://github.com/simpletibr/simplicio
- Manifest: plugins/simplicio/plugin.json
- Version: 0.2.16
- License: MIT
- Category (editorial): other
- Skills: 8 (simplicio-cli, simplicio-dev-cli, simplicio-fast, simplicio-loop, simplicio-mapper, simplicio-prism, simplicio-runtime, simplicio-setup)
- MCP servers: 1 (simplicio-runtime)
- Stars: 28
- Repository created: 2026-06-05
- Repository last pushed: 2026-09-17
- Publisher type: Organization
- Listing: https://agentpluginsdirectory.com/plugins/simplicio--simpletibr
- Schema: https://agent-plugins.org/schemas/1.0.0/plugin.schema.json

## What simplicio does, in the publisher's words

This multi-host package preserves the native Codex plugin and adds official portable Agent Plugins v1, Claude Code, and Gemini CLI manifests. Every package uses the verified Simplicio Runtime bootstrap, exposes its live MCP surface, and ships the same governed Simplicio skills. Claude Code has a host-specific launcher so its MCP process is authoritative Mapper-only while the portable, Codex, and Gemini launchers retain their host-selected Runtime mode.

The package does not pretend every product has the same plugin API. The machine-readable host-surfaces.json records the supported surface for all 32 Runtime host contracts. Claude Code owns its native Mapper-only hooks: each supported lifecycle event confirms or refreshes the current project map and reuses.simplicio/hook-context/ for the same project generation. The Runtime still owns MCP bootstrap and authentication. Runtime mapping is preferred; if it fails, the hook uses the bundled Mapper fallback already maintained inside the Simplicio-managed.simplicio state, then stores the resulting map in the same cache and receipt format.

From the project README, punctuation lightly normalized. Full text: https://raw.githubusercontent.com/simpletibr/simplicio/HEAD/plugins/simplicio/README.md

## Skills

- simplicio-cli: Use simplicio-cli for verified code changes through mapper, precedent, six-layer prompts, tests, and a verify loop. Trigger on code edits, task-to-code, diff+test, or simplicio-py requests.
- simplicio-dev-cli: Perform deterministic Simplicio code changes and validation through the Dev CLI. Use for file edits, patches, implementation, formatting, tests, diagnostics, pre-effect validation, retries, evidence files, and safe mutation workflows. The agent decides intent; Dev CLI owns the mutation and verifica…
- simplicio-fast: Accelerate Simplicio retrieval with indexed search, ranking, cache, mmap, and bounded parallel reads. Use for repeated or large context lookups, low-latency symbol/file retrieval, snapshot-backed ranking, and cache-aware discovery. Do not use it as the source of truth or as a file mutation tool.
- simplicio-loop: Orchestrate multi-step Simplicio work with agents, slots, stages, retries, fan-out, recovery, verification, and convergence. Use for multiple issues, iterative implementation, parallel tasks, reviewer cycles, bounded retries, or workflows that must discover, act, test, correct, record, and repeat.…
- simplicio-mapper: Survey and understand Simplicio codebases before action. Use for repository discovery, architecture mapping, symbol and dependency lookup, call-graph analysis, precedent search, snapshot creation, context selection, and any task where an agent must understand the project before editing. Do not use…
- simplicio-prism: Route broad or ambiguous work across Simplicio Mapper, Fast, Dev CLI, Loop, and Runtime. Use when a request spans components, requires choosing the correct capability, needs an end-to-end workflow, or the agent is unsure which Simplicio skill to invoke. Prism classifies and composes; it does not ex…
- simplicio-runtime: Use the plugin-managed Simplicio Runtime to map repositories, recall project memory, apply deterministic edits, run every valid CLI subcommand through the governed MCP supertool, and validate evidence. Use when the user invokes Simplicio or asks for Simplicio-backed repository work. Do not authenti…
- simplicio-setup: Verify, repair, authenticate, update, or explicitly register the Simplicio Runtime installed by the Codex plugin. Use when the user asks to install Simplicio, enable all Simplicio commands, fix plugin startup, check authentication, or register Simplicio with other hosts. Login and broad host regist…

Descriptions come from the frontmatter of each SKILL.md, punctuation lightly normalized.

## MCP servers

- simplicio-runtime: transport: stdio; command: node ./bin/simplicio-mcp-bootstrap.js

Read from the plugin's own mcp.json. Environment variable names only, never values.