Agent (personnalisé)

Composants

Les sessions gérant des revues, investigations, builds ou autres tâches variées, toutes au sein de la même conversation, peuvent vite saturer le contexte principal.

C’est là que les agents personnalisés (ou sous-agents) entrent en jeu : chacun dédié à un type de tâche, avec son propre modèle, ses propres accès aux outils et son propre prompt système.

Ils délèguent des tâches ou exécutent du travail en parallèle pendant une session sans saturer le contexte principal, sans avoir à démarrer une nouvelle session avec un agent préconfiguré.

Format : Claude Code

repository/
└── .claude/
    └── agents/
        └── agent-name.md
~/.claude/
└── agents/
    └── agent-name.md
~/.claude/plugins/cache/<marketplace>/<plugin>/
└── agents/
    └── agent-name.md

---
name: agent-name
description: What this agent specializes in and when it should be invoked
# many other frontmatter properties
---

Detailed system prompt for the agent describing its role, expertise and behavior.

Format : Codex

repository/
└── .codex/
    └── agents/
        └── reviewer.toml
~/.codex/
└── agents/
    └── reviewer.toml

name = "reviewer"
description = "PR reviewer focused on correctness, security, and missing tests."
developer_instructions = """
Review code like an owner. Prioritize correctness, security, and test coverage.
"""

Format : Copilot

repository/
└── .github/
    └── agents/
        └── agent-name.agent.md
~/.copilot/
└── agents/
    └── agent-name.agent.md
~/.copilot/installed-plugins/<marketplace>/<plugin>/
└── agents/
    └── agent-name.agent.md

---
name: agent-name
description: What this agent specializes in and when it should be invoked
# many other frontmatter properties
---

Detailed system prompt for the agent describing its role, expertise and behavior.

Format : Cursor

repository/
└── .cursor/
    └── agents/
        └── reviewer.md
~/.cursor/
└── agents/
    └── reviewer.md

---
name: reviewer
description: What this agent specializes in and when it should be invoked
model: inherit # "inherit" ou un ID de modèle précis
readonly: true # empêche les modifications de fichiers et les commandes shell avec état
is_background: false
---

Prompt système détaillé décrivant le rôle, l'expertise et le comportement de l'agent.

Format : Mistral Vibe

repository/
└── .vibe/
    ├── agents/
    │   └── developer.toml
    └── prompts/
        └── developer.md
~/.vibe/
├── agents/
│   └── reviewer.toml
└── prompts/
    └── reviewer.md

agent_type = "subagent" # "agent" (user-selectable) or "subagent" (delegation-only)
display_name = "Reviewer"
description = "Read-only subagent for code review."
system_prompt_id = "reviewer" # must point to a valid prompts/<id>.md

Format : Antigravity

repository/
└── .agents/
    └── agents/
        ├── reviewer.md
        └── developer/
            └── agent.md
~/.gemini/config/
└── agents/
    ├── reviewer.md
    └── developer/
        └── agent.md
~/.gemini/antigravity-cli/plugins/<plugin>/
└── agents/
    └── reviewer.md

---
name: reviewer
description: What this agent specializes in and when it should be invoked
subagent: true
mainAgent: false
model: pro # "inherit", "flash", or "pro"
commandExecutionPolicy: sandbox # "off", "auto", "eager", or "sandbox"
---

Detailed system prompt for the agent describing its role, expertise and behavior.

Format : Devin

repository/
└── .devin/
    └── agents/
        ├── reviewer.md
        └── developer/
            └── AGENT.md
~/.config/devin/
└── agents/
    ├── reviewer.md
    └── developer/
        └── AGENT.md
~/path/to/locally/installed/plugins/<name>/
└── agents/
    └── reviewer.md

---
name: reviewer
description: What this agent specializes in and when it should be invoked
model: sonnet
allowed-tools: [glob, grep, read]
---

Detailed system prompt for the agent describing its role, expertise and behavior.