truto-jsonata — Custom Functions for Truto JSONata Expressions

Use this skill whenever you (or an agent acting on a Truto customer's behalf) write JSONata inside Truto config. Everywhere JSONata appears in Truto config is editable via the public Truto HTTP API — there is no need to fork the platform. The customer-facing surfaces are:

• Unified API mapping overrides (the heaviest user) — POST/PATCH /environment-unified-model-resource-method config.response_mapping, config.query_mapping, config.request_body_mapping, config.request_header_mapping, config.response_header_mapping, config.path_mapping, config.error_mapping, config.resource.expression / config.method.expression, config.is_partial_expression, config.before[].run_if / config.after[].run_if, config.side_load.*.response_mapping
• Custom unified models — POST /unified-model + POST /unified-model-resource-method (same config.* JSONata fields as above, defining the base row that environment overrides merge on top of)
• Per-integrated-account overrides — PATCH /integrated-account/:id unified_model_override.<model>.<resource>.<method>.<mapping_field> (per-account variant of the unified mapping fields)
• Environment integration overrides — PATCH /environment-integration/:id override.error_expression, override.authorization.config.expression, override.pagination.config.*_expression, override.rate_limit.is_rate_limited / .retry_after_header_expression / .rate_limit_header_expression, override.webhook.handle_verification / .payload_transform
• Sync Job V4 templates — transform.config.expression, add_context.config.expression, update_state.config.value_expression, node-level run_if, job-level args_validation, and request.query / request.body when given as strings
• Workflows — workflow-level run_if, step-level run_if, and step config when given as a string
• Daemon Jobs — args_validation
• Integration Scheduled Actions — run_if

Truto evaluates these expressions with the @truto/truto-jsonata runtime, which extends standard JSONata with a curated set of custom $ functions for data conversion, encoding, hashing, lodash-style array/object work, format conversions (Markdown ↔ HTML ↔ Notion ↔ Slack ↔ Google Docs ↔ ADF ↔ PDF), data formats (XML, CSV, Parquet, SQL), and AI helpers.

When to Use