Limits & bounded behavior

Selected implementation limits:

Area	Limit / behavior
Generic tool text result	64 KiB
Fetch raw response body	8 MiB
Fetch URL	8,192 characters
Fetch maxLength	1–50,000 characters (default 5,000)
Fetch request timeout	30 seconds
Fetch DNS resolution timeout	10 seconds
Fetch redirects	disabled
Media file input	1 MiB
Text file input	8 MiB
Multi-file read batch	32 files
edit_file batch	1,024 operations and 8 MiB total edit text
Shell stdout capture	8 KiB
Shell stderr capture	8 KiB
Shell default timeout	120 seconds
Shell maximum timeout	600 seconds
Provider response body	8 MiB
Agent spawn task / send_input message	256 KiB each
wait_agent targets	64
Discovered agents	256
Agent catalog description	4 KiB
Agent file / generated catalog	1 MiB / 64 KiB
Discovered skills	256
Skill description / generated catalog	4 KiB / 64 KiB
Activated skill / resource manifest	1 MiB / 64 KiB
Skills per agent	32
Built agent context (instructions + skills)	1 MiB
Canonical agent file	1 MiB
Default provider turns	32
Maximum provider turns	128
Agent runtime concurrent capacity	8
Memory file	8 MiB
Individual memory text field	16 KiB

Safety boundaries, not tuning recommendations

These limits are safety boundaries, not tuning recommendations. Applications that need materially larger payloads should change them deliberately and review the impact on model context size, memory use, latency, and denial-of-service exposure.

Related

• Security model — the enforcement model behind these limits.