Sentence Structure Coach

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Sentence Structure Coach

Parses sentence structure, checks grammar, then compiles a single coaching note.

Sentence Structure Coach
Parse Sentence
4.6
Check Grammar
4.6
Compile Coaching Note
4.6

What it's for

Choose this when you want structured, sentence-level coaching rather than a whole-essay verdict — it shows its work by parsing grammar first, then flagging issues, then distilling one coaching note. Ideal for grammar drills, targeted writing exercises, or teaching why a sentence is off.

How to use

Send one `sentence` to the endpoint. It runs three chained blocks — parse the grammar, flag issues, then compile a single coaching note — so the output is one focused note rather than a raw list. Use it to coach on one sentence at a time; loop it yourself over a paragraph if you need whole-text coverage.

Input

  • sentence string · requiredthe sentence to analyze

Output

  • note string · requiredsingle compiled coaching note

Blocks

  1. 1
    Parse SentenceLLM · anthropic/claude-sonnet-4.6

    Break the given sentence down into its grammatical parts (subject, verb, object, modifiers).

    sentence → parts

  2. 2
    Check GrammarLLM · anthropic/claude-sonnet-4.6

    Given the parsed grammatical parts, flag any grammar issues and suggest a fix for each.

    parts → issues

  3. 3
    Compile Coaching NoteLLM · anthropic/claude-sonnet-4.6

    Combine the flagged grammar issues into a single, encouraging coaching note the student can act on. Reference the specific rule behind each issue.

    issues → note

Tests

NameInputOutput
Flags a subject-verb disagreement
A disagreeing sentence surfaces in the coaching note.
sentence
The team of players are winning the match.
note
Treat "team" as a singular collective subject, so it takes "is winning" — here "are winning" agrees with the plural "players" instead of the actual subject.
Handles a well-formed sentence
A correct sentence yields an encouraging, low-issue note.
sentence
The cat sat quietly on the warm windowsill.
note
Grammatically sound — subject, verb, and modifiers all agree. To level up, try varying sentence length across a paragraph for rhythm.

Evals

  • Note cites a specific ruleLLM judge

    Judges whether the coaching note references the grammar issue it found.