How diagnostics work
Diagnostics are specialized AI lenses that examine your manuscript from different angles. Each one runs independently and can be re-run after revisions. Results include specific passage references — click any to jump to that moment in your text. Every diagnostic now carries matching craft lessons in Learning, with a walkthrough of how to read that particular tool, reachable from the foot of the diagnostic itself.
The Ensemble
Your cast roll call. Maps every character's presence across the manuscript — who appears where, how often, and for how long. Look for characters with very low presence percentages or absence gaps, and check role overlap warnings to merge or differentiate characters.
Character Arcs
Tracks characters' internal arcs across eight dimensions — emotional state, moral alignment, self-awareness, and more. Scores each dimension at every scene to show how a character changes (or doesn't) throughout the narrative. Compare the AI-generated arc shape with your intent, using the scene-level detail to pinpoint exactly where the arc stalls or needs another beat.
Character Agency
Examines whether your protagonist is driving the story or being driven by it. Classifies each scene as proactive or reactive and flags 'passive runs' — stretches of consecutive reactive scenes. Look at stretches of passive scenes and consider adding a moment of choice or initiative to restore your protagonist's agency.
Genre Promises
Evaluates your manuscript against the conventions of your chosen genre — the ingredients, beats, and character archetypes readers expect. Results are categorized as kept, bent, or broken. Evaluate broken promises that might leave readers feeling something is missing, or use the subvert action to mark intentional deviations.
Motifs
Identifies recurring images, symbols, emotional patterns, and thematic echoes. A motif in the opening and closing creates a satisfying frame. Strengthen the motifs that serve the story, and prune or redirect those that appear without clear purpose.
Setups & Payoffs
Tracks narrative promises — questions raised, mysteries hinted at, threads left dangling — and checks whether they're paid off. Look for promises without payoffs that could frustrate readers, and payoffs that arrive without a clear setup.
The Undercurrent
Reads the three signals beneath plot and pacing — thematic presence, the emotional temperature of the prose, and the value-arc charge — against the shape the genre expects. Overlays the expected charge skeleton on the actual value arc. Look for divergences between your prose sentiment and the dramatic turn, and check for extended thematic gaps.
Narrative Pulse
A multi-dimensional emotional map charting tension, conflict, stakes, emotional intensity, and protagonist agency scene by scene. Look for long flat stretches where engagement might flag, and check that climactic scenes actually register as peaks across multiple dimensions.
Momentum
Analyses your manuscript's pacing — the rhythm of fast and slow, the ebb and flow of narrative energy. It identifies pacing zones and classifies the overall profile. Check whether your pacing profile matches your intent, paying attention to flagged issues like sagging middles or rushed climaxes.
Thread Browser
Navigate your manuscript by story thread rather than chapter. Read a subplot thread in isolation to see whether it has its own arc, whether its pacing works, and whether it builds to a satisfying resolution.
Subplots
Analyses how your subplots and secondary threads interact with the main storyline — whether they complement, contrast, or compete with the primary narrative. Check whether your secondary threads are pulling their weight, and whether their climactic moments are well-timed relative to the main arc.
Cause & Effect
Maps cause-and-effect chains. Shows how events connect — which scenes cause later developments, and which feel disconnected. Strong causality makes a story feel inevitable rather than arbitrary. Look for broken links where events happen for no clear reason, or where consequences never materialise.
Continuity Check
Scans for continuity errors — contradictions in character behavior, setting details, timeline, and factual elements. Review high-severity continuity contradictions, deciding whether they are genuine errors or intentional choices like an unreliable narrator.
The Scene Ledger
A simple table with one row per scene. Empty cells show passive protagonists, sagging middles, and exposition that masquerades as story. Check for empty cells that reveal scenes that change nothing and merely provide information.
Developmental Report
A full editorial assessment synthesizing strengths, risks, character notes, pacing notes, theme notes, continuity concerns, and open questions to orient your revision.
Manuscript Readiness
A comprehensive readiness assessment that synthesizes diagnostic data into an overall picture. Use this as a pre-submission checklist to identify what is still visibly unresolved in your manuscript.