Typed write ops
Bifrost
86
Higgsfield
~65
patch-contract.mjs — full AE mutation surface
Drive a live AE session from Cursor, Claude, or any MCP client. Inspect the project, apply typed patches, capture stills, undo — with a wider write surface than Higgsfield, and the ops their agents had to work around.

Benchmarked vs Higgsfield
The comparison went our way
vs ~65 AE tools
vs 24 friendly keys
they cannot place footage
their reorder path is broken
Side-by-side on the things that actually blocked real After Effects agent work.
Typed write ops
Bifrost
86
Higgsfield
~65
patch-contract.mjs — full AE mutation surface
Effect aliases
Bifrost
~90
Higgsfield
24
Friendly keys mapped for agents — nothing thin to fill
Footage into comps
Bifrost
addFootageToComp
Higgsfield
Missing
Higgsfield cannot place project footage into a comp at all
Layer reorder
Bifrost
moveLayer
Higgsfield
Broken
Their ae_reorder_layers fails — agents end up designing around it
Beyond the larger write surface — these are the escapes and evidence layers that keep agents productive when a typed path is not enough.
The ExtendScript escape hatch when no typed op fits — still inside the batch undo group, not a wild side channel.
Before/after evidence for every change. Strictly better than a single read-back-verified gradient op dressed up as proof.
Versioned skills the agent can discover and reuse — the capability often assumed elsewhere, shipped here.
Inspect, find, capture, checkpoint, and walk undo/redo from outside After Effects. Same token flow as the panel; same safety rails.
Scope-aware project reads — comps, layers, structure.
PNG frames so the agent can actually see the comp.
Targeted property reads without dumping the whole project.
Locate layers by name, type, or relationship.
Project atlas for large show files.
Safe restore points before risky batches.
Single-step undo through the same bridge.
Redo when you need to walk the change forward again.
The gaps are not theoretical — they are the empty comps, inverted mattes, and silent colour drops that show up in real agent sessions.
Higgsfield MCP
Bifrost Agent Bridge
~65 AE tools, thinner effect map (24 friendly keys)
86 typed write ops and ~90 effect aliases already mapped
No way to put project footage into a comp
addFootageToComp finishes the package instead of leaving an empty browser comp
ae_reorder_layers broken — agents redesign stacks around inverted track mattes
Working moveLayer — obvious layer order just works
Gradient tool exists partly because typed colour values were silently swallowed
Typed patch path with required fields, preflight, and mutation evidence
Read-back verification on narrow ops
ae_mutation_ledger — before/after evidence across the run
No first-class script escape + skills surface
ae_run_script + ae_show_skills for the cases typed ops cannot cover
Agent Bridge is no longer a separate add-on. Activate your Solo or Team key on Home, open the AI tab, and start the bridge — same approval and undo-group safety as the panel.