ce-session-extract

Original：🇺🇸 English

Translated

2 scripts

Extract conversation skeleton or error signals from a single session file at a given path. Invoked by session-research agents after they have selected which sessions to deep-dive — not intended for direct user queries.

4installs

Sourceeveryinc/compound-engineering-plugin

Added on2026-04-25

NPX Install

npx skill4agent add everyinc/compound-engineering-plugin ce-session-extract

SKILL.md Content

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Session extract

Agent-facing primitive. Extract filtered content from a single Claude Code, Codex, or Cursor session file — either a conversation skeleton or error signals.

This skill exists so that agents do not read multi-megabyte session files into context. The scripts under

scripts/

own the JSONL shape knowledge and emit a narrative-readable digest.

Arguments

Space-separated positional args:

```
<file>
```
— absolute path to a session JSONL file (typically a
```
file
```
value returned by
```
ce-session-inventory
```
).
```
<mode>
```
—
```
skeleton
```
or
```
errors
```
.
```
<limit>
```
(optional) —
```
head:N
```
or
```
tail:N
```
to cap output at N lines (e.g.,
```
head:200
```
). Omit to return full extraction.

Execution

Skeleton mode — narrative of user messages, assistant text, and collapsed tool-call summaries:

bash

cat <file> | python3 scripts/extract-skeleton.py

Errors mode — just error signals:

bash

cat <file> | python3 scripts/extract-errors.py

If

<limit>

is

head:N

, pipe through

head -n N

. If

tail:N

, pipe through

tail -n N

. Apply the limit after the Python script, never before — the

_meta

line is emitted last and a head cap may drop it; that is acceptable when the caller asks for a head cap.

Return the raw stdout verbatim. Do not paraphrase, annotate, or synthesize — the caller does synthesis across multiple sessions.

What each mode returns

Skeleton

Narrative output with one logical event per block, separated by

---

:

User messages (text only, no tool results, framework wrapper tags stripped)
Assistant text (no thinking/reasoning blocks — those are internal or encrypted)
Tool call summaries; 3+ consecutive same-name calls are collapsed (e.g.,
```
[tools] 5x Read (file1, file2, +3 more) -> all ok
```
)

Ends with a

_meta

line:

{"_meta": true, "lines": N, "parse_errors": N, "user": N, "assistant": N, "tool": N}

.

Errors

One line per error, separated by

---

:

Claude Code: tool results with
```
is_error: true
```
Codex:
```
exec_command_end
```
events with non-zero exit or non-empty stderr
Cursor: always empty — Cursor agent transcripts do not log tool results