Skip to main content
Use Melso MCP for procedures with Hacienda: query records, register expenses, prepare invoices and read the fiscal calendar. Exact fiscal approval stays in the signed-in app; Melso professionals handle included filing. No customer MCP tool approves, files or pays. tools/list returns the core tools available to your connection. Advanced tools are not returned by tools/list: discover them through tools_search, then invoke the exact returned name through tools_call.
Melso Agents is available only internally or by private invitation. Agents-specific features require existing access. For the autónomo fiscal service, see Get started.
The availability column shows server eligibility after company setup, derived from the same profiles and actor permissions as each tool page. Eligible autónomo and empresa connections include shared tools such as Library, Artifacts, Skills and Secrets alongside fiscal tools; these do not require an Agents invitation just because they are non-fiscal. Autónomo and Empresa identify eligible company types, not new signup offers. Agents invitation requires existing private access. Managed Runs only and Managed Runs and Melso conversations exclude external OAuth clients, including invited Agents users. OAuth-only excludes Run tokens. Membership, plan, connected services and action permissions can narrow any row. Shared tools have several audience labels. Rows marked only Agents invitation describe the private product and are not part of the autónomo service. Autónomo and empresa Automations use the company’s default execution. They can edit the allowed Automation fields, but cannot choose a harness or model through automations_update_execution; that operation requires Agents access.

​
Core tools

Call these tools directly. To reach an advanced tool, use tools_search, then tools_call; see Discover before calling.

​
Agents and managed-Run tools

These tools can appear in tools/list only for an eligible private or managed connection.

​
Advanced tools

Discover with tools_search, then invoke the exact returned name through tools_call. These names are not returned by tools/list and cannot be called directly.

​
Connected app tools

Connected apps add a runtime catalog. Their names and schemas depend on the authenticated account and can change independently of Melso. Discover them with tools_search, then use the exact returned name and schema with tools_call. Never construct an app tool name or reuse a schema from a different connection.

​
Combined status sections

workspace_status combines these source operations into one read. Request sections with include; their availability still follows the connection. These are section mappings, not extra tools to invent in a client.