Settings and safety2 min readUpdated for Syntheo v0.4 Series

Skills and connected tools

Open Settings → Marketplace to add optional instructions and tools to Syntheo.

Skills#

A Skill is a reusable set of instructions for a particular kind of work.

Use a Skill when:

  • the same process comes up often;
  • a task needs a consistent checklist;
  • your organization has an approved workflow;
  • you want the procedure to be reviewable and reusable.

Before installing a Skill, review its source, files, purpose, and requested actions.

Choose how a Skill is used#

  • User invoked: the Skill is available only when you select it with @.
  • Model invoked: Syntheo may choose it automatically when it seems relevant.

Start with User invoked. Switch to Model invoked only when the Skill is trusted, broadly useful, and clearly described.

Connected tools and MCP#

A connected tool gives Syntheo access to another app, service, or local capability. MCP is the connection standard used by many of these tools.

Use a connected tool when Syntheo genuinely needs an external capability, such as looking up approved information or interacting with another service.

After adding a connection:

  1. Refresh its available tools.
  2. Read each tool's name and description.
  3. Open Settings → Permissions.
  4. Keep unfamiliar, write-capable, or sensitive tools on Ask.
  5. Test with a small, reversible request.

Choose when tools are visible#

  • User invoked: select the tool with @ for the current turn.
  • Model invoked: Syntheo may discover and use the tool automatically.

Use User invoked for production systems, communication tools, paid services, or anything with broad access.

Safety checklist#

  • Trust the source and publisher.
  • Understand which account, files, or service the tool can access.
  • Use the narrowest available credentials.
  • Read approval details before allowing writes or external actions.
  • Remove connections you no longer use.
  • Refresh tools after an update so their descriptions stay current.

Which should I use?#

NeedUse
One-time instructionsA prompt
Reusable procedureA Skill
Access to another service or capabilityA connected tool
Stable project rulesProject instructions
Personal response preferencesBehaviour settings

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