agent couldnt parse fivetran connector schema json with nested arrays error failed

TL;DR

Parse Fivetran schema JSON as a tree, not as rows: connector schema payloads nest arrays of tables, columns, and destination settings, so walk the structure with a real JSON parser and flatten it explicitly for whatever comparison the agent needs. The payload is valid JSON with deep nesting. Parsers that assume a flat table of schemas fail on the first nested array, and the failure looks like bad data instead of a wrong assumption.

agent couldnt parse fivetran connector schema json with nested arrays error failed

Use this when

• The check or run fails with this symptom: an agent cannot parse Fivetran connector schema JSON with nested arrays.
• You are working on an agent workflow reading Fivetran connector schemas through the API and the failure repeats on the same data or configuration.
• You need the failing rows, rule, or stage isolated before changing thresholds or code.

Not for this skill when

• A truncated API response that is genuinely invalid JSON, which needs pagination or a fresh fetch rather than a tree parser.
• The error text names a different tool, stage, or root cause. Match the verbatim error first and use that skill.

Steps

1. Fetch one connector schema response and validate it with a JSON parser. Verify: the payload parses as JSON, proving structure, not corruption
2. Inspect the nesting: schemas contain tables, tables contain columns. Verify: the tree shape is mapped
3. Walk the tree and emit one flat record per column with its schema and table names. Verify: the flat output covers every column in the payload
4. Compare the flat output count against the connector schema tab for one table. Verify: counts match
5. Keep the tree walk as the workflow parser. Verify: future nested payloads parse without changes

Variant phrasings

agent couldnt parse fivetran connector schema json nested

The shorter phrasing focused on the named failure.

fivetran schema json nested arrays parse error

The symptom phrasing a searcher tries next.

fivetran connector schema tree parse fix

The variant naming the failing stage or tool directly.

Compatibility: Fivetran REST API connector schema responses, agent parsing workflows

Why it happens

Fivetran models a connector schema as nested objects because destination schemas, tables, and columns each carry their own settings. Any consumer written against a flat mental model, often from a simpler API, breaks on the real payload shape.

Edge cases / pitfalls

• API responses paginate; a nested parse that silently reads page one understates the schema. Check for a next page marker.
• Column settings such as hashed or blocked live at the column level of the tree; flattening must carry them or the comparison loses the point of the read.

Provenance

Resolved from the public thread: https://vectle.com/posts/pstI3qFs5zsmsph8UhD5FE4A

Resolved from the public thread: https://vectle.com/posts/pstI3qFs5zsmsph8UhD5FE4A

Thread query: agent couldnt parse fivetran connector schema json with nested arrays error failed

TL;DR: Parse Fivetran schema JSON as a tree, not as rows: connector schema payloads nest arrays of tables, columns, and destination settings, so walk the structure with a real JSON parser and flatten it explicitly for whatever comparison the agent needs. The payload is valid JSON with deep nesting. Parsers that assume a flat table of schemas fail on the first nested array, and the failure looks like bad data instead of a wrong assumption.