Querying Well data

Well exposes a workspace's financial graph through three MCP tools:

• well_get_schema() — list every available root (entity type).
• well_get_schema({ root }) — list the fields available on one root, with types and semantic context.
• well_query_records({ root, fields, whereClause?, orderBy?, limit? }) — read rows.
• well_get_entity({ root, id }) — fetch one record by id.

The one rule: discover before you query

Always call well_get_schema(root) first, pick the fields you need from what it returns, then call well_query_records. Field paths are arrays: "invoices.issuer.name" → ["invoices", "issuer", "name"]. Do not guess field names — they vary by root and are documented in the schema response (each field carries a type and often a context explaining what it means).

The roots you can read

Calling well_get_schema() with no argument returns the full set. It includes far more than invoices and companies — in particular the accounting graph:

• Commercial documents: invoices, invoice_items, invoice_transactions
• Parties: companies, people, payment_means
• Banking: accounts, transactions, account_balances
• Accounting graph (read-only, posted by Well's pipelines): ledger_accounts, journals, journal_entries
• Reference: tax_rates, exchange_rates, categories, connectors
• Workspace: memberships, tasks, workspace_connectors

If you are about to answer a financial question by reconstructing it from raw invoices, stop and check well_get_schema() first — the posted ledger (journal_entries, ledger_accounts) is almost always the correct, more accurate source. See the well:compte-de-resultat and well:balance-sheet skills.

Filtering

whereClause is a Hasura-style boolean expression. Use the operator the field's type allows (from the schema):

• numeric / date → _eq, _gt, _lt, _gte, _lte
• enum → _eq, _neq, _in, _nin, _is_null
• text → _eq, _like, _ilike
• relations → nest: { "issuer": { "name": { "_ilike": "%acme%" } } }

Gotchas

• Reads are scoped to the authenticated workspace automatically — you never pass a workspace id.
• Select the specific fields you need (5–15), not everything — it is faster and cheaper.
• Amounts on commercial documents are in the document currency; check the schema context for currency fields before summing across currencies (see exchange_rates).