Part VII — Quick-lookup appendices

This part covers Chapters 28–30: the parameter value cheat-sheet, regex and glob syntax, and the glossary.

28. Parameter value cheat-sheet

[!ref] Full details in the User Manual, "Tools overview".

28.1 Default caps

Item	Default	Cap
Single tool return	4096 bytes	256 KiB
Single outbound message	3800 chars	Per IM cap
Shell command timeout (`fs.exec`)	120 s	Configurable via parameter / `tools.yaml`
Tool-execution idle safety net (zAgent)	10 min without feedback	Changeable via `ZAGENT_TOOL_TIMEOUT_SEC`; deadline = max(last feedback + 10 min, tool time limit + 6 min); subtask family exempt
MCP-call idle safety net (zAgent)	35 min without feedback	Reset by each piece of feedback; with an announced time limit at least "remaining limit + 5 min"; no longer cancelled by total duration
Running timer appears	60 s	Re-synced every 20 s thereafter
Repetition-detection window	25 lines / 25 turns	Within a turn, cut off at 3 (adjacent) or 5 times; across turns 3 / 5 / 8 times
Session routines	5 per session · 50 per workspace	≤ 10 created per session per 24 h; ≤ 300 deliveries per workspace per day; paused after 3 consecutive failures
Low-balance inline notice	< 50 points	AVL-Zero only
Alpha build validity	45 days	Not configurable
Background task concurrency	64	Not configurable
Background task terminal-state retention	30 min	Not configurable
Startup auto-resume tasks	5	Not configurable; rest go to manual resume
AgentParallel legs	2–16	< 2 errors; > 16 truncated
AgentParallel overall timeout	600 s	Max 1800; unfinished legs become `pending`
AgentParallel per-leg output	8000 runes	Truncated beyond, with a note to fetch full text
Self-heal attempt caps (compact / fallback / backoff / outcome)	2 / 3 / 3 / 3	History can lower; each kind keeps ≥ 1
RAG index files / build timeout	4000 / 120 s	≤ 400 symbols·≤ 4 MiB per file; `code.search` default 20 hits, `code.ask` default 12
SBOM generate / audit / vex previews	50 / 30 / 40	Full results in the on-disk file
SBOM reachability scan	≤4000 files · ≤256 KiB/file	vex reachability analysis caps
Binding-code TTL	10 min	Not configurable
Sign-in credential TTL	23h45m	Not configurable

28.2 File-size hard caps (tool reads)

Tool	Cap
`read` (lines)	256 KiB
`read` (bytes)	256 KiB
`list`	4 KiB
`glob`	256 KiB
`grep`	256 KiB
`exec`	256 KiB

28.3 Exit-code semantics

Code	Meaning	Source
0	Success	CLI / tool
1	Generic	CLI / tool
2	Argument	CLI
64–78	sysexits	CLI
124	Timeout	exec
137	Killed	exec