Reference

Limits

Every cap the platform enforces, read from its source at build time.

Each value below is read from the code that enforces it when these docs are built, so the table matches what the platform does.

Projects and deployments

Limit	Value	Notes
Project name	64 characters
Project slug	40 characters
Root directory	256 characters	Also the output directory.
Build and install commands	1,024 characters
Deployments per page	100
Recent deployments on a project	20
Build log events returned	2,000
Build compute memory	4 GB
Server function memory	1,024 MB
Server function timeout	30 seconds
si.json watch patterns	50
si.json watch pattern length	200 characters
Build cache archive	1,024 MB	Larger archives aren't saved.
Build cache kept	14 days	After the last write.
Uploaded working tree (si deploy)	250 MB	Compressed.
Uploaded working trees kept	30 days	Redeploys of an upload work until then.
CLI git keys valid	90 days	The CLI replaces a key a week before it expires.
Variables per .env import	200
Deployment hostname label	63 characters	Longer labels are cut.
Preview server functions kept	14 days	Then the preview expires.
Production deployments kept serving	3	The current one and the most recent earlier ones; older ones expire.
Preview build artifacts kept	30 days
Runtime log window	1 hour
Runtime log lines returned	500
Runtime log message length	4,000 characters	Longer messages are cut and marked truncated.
Runtime log search time	10 seconds
Runtime log filter	200 characters

Crons

Limit	Value	Notes
Crons per project	20	Entries after these are ignored.
Scheduling window	5 minutes	A run starts up to this long after its scheduled time.
Retries after a failed run	2
Request timeout	2 minutes

Environment variables

Limit	Value	Notes
Name	256 characters
Value	65,536 characters

Storage and repositories

Limit	Value	Notes
Resource name	40 characters
Description	256 characters

Domains

Limit	Value	Notes
Hostname	253 characters

Git

Limit	Value	Notes
File shown as text	1 MB	Larger files and binary files aren't shown.
Branch list pages read	5
Commits per page	50
Commits analyzed for insights	200
Insights history time per request	8 seconds	A walk that runs out of time continues on the next request.
Folders scanned for languages	80
Weeks of commit activity	12
Contributors listed	25
Files listed in a diff	300
Files with line diffs	60	Later files are listed collapsed.
File size for line diffs	512 KB
Diff lines per view	10,000
Issues and pull requests per page	25
Comments shown per thread	500
Issue title	256 characters
Issue body and comments	65,536 characters
Labels per issue or pull request	10	Each up to 50 characters.
Assignees per issue or pull request	10
Files per web commit	1,000
Content per web commit	50 MB	Push larger changes with git.
Files sent in one request	100	Larger web commits upload their files first.
Content sent in one request	4 MB	Larger web commits upload their files first.
File path length	4,096 characters
Folder depth	20
Branch name length	256 characters
Review comment	10,240 characters
Raw file download	4 MB
Files listed at a ref	10,000
Required approvals	10
ZIP built while you wait: files	1,000	Larger archives are built in the background.
ZIP built while you wait: size	25 MB	Uncompressed, no single file over 3.5 MB; larger archives are built in the background.
Repository size for background ZIPs	512 MB	Compressed snapshot of one commit; clone larger repositories.
Background ZIPs kept	7 days
Rename checks per diff	10	Deleted and added files compared for similar content.
Open pull requests listed	100
Pull request commits shown	50
Pull request title	150 characters
Pull request description	10,240 characters
Merge commit message	4,096 characters
Git request timeout	5 minutes

Identity

Limit	Value	Notes
Password length	12 characters	Minimum; at most 256.
Sign-in session	7 days
App access token	15 minutes	Renewed with the refresh token.
App refresh token	30 days	Single use; each refresh issues a new one.
Authorization code	1 minute
Passkey prompt	5 minutes
Invite link	7 days
Key expiry	365 days	0 or empty means no expiry.
Sign-in requests per IP address	300	Per 5 minutes: sign-in, invite, setup and approval pages. Past it, 429 with Retry-After.
Token requests per IP address	1,000	Per 5 minutes, across the token, device code and client registration endpoints.
Sign-in clients per project	10
Redirect URIs per sign-in client	10
Access token lifetime (apps and MCP clients)	1 hour

Self-hosted agents

Limit	Value	Notes
Login code	15 minutes
Login polling interval	5 seconds
Poll interval while idle	15 seconds
Poll interval while idle with push	1 minute	Agents with an open push socket; new jobs wake them at once.
Poll interval after a job	1 second
Heartbeat while a job runs	20 seconds	Keeps the device online and delivers cancels.
Running job counted as abandoned	2 minutes	Without a heartbeat for this long, a cancel ends the job at once.
Auto-update check	6 hours	Between jobs; signed releases only.
Shown online after the last poll	90 seconds	Or heartbeat while a job runs.
Hosts on a device allowlist	200
Hosts per job	50
Job input	300,000 characters	Serialized JSON.
Queued job lifetime (default and longest)	7 days	Set per job with ttlSeconds; unclaimed jobs expire after it.
Shortest queued job lifetime	1 minute
Job kept after it's claimed	7 days
Queued jobs a poll looks at	25	The oldest ones.
Results upload URL	1 hour
Results download URL	1 hour
Results kept	7 days
Callback attempts	5	Then the callback is dead-lettered.
Callback request timeout	1 minute
Job label	120 characters
Fresh upload URL requested after	45 minutes
Retry delay after a failed poll	1 minute	Maximum; starts at 1 s and doubles.

Job type: http.batch

Limit	Value	Notes
Requests per job	2,000
Default delay between requests	1 second
Shortest delay	250 ms
Longest delay	30 seconds
Request timeout	30 seconds
Response body kept	5 MB	Characters of text; longer bodies are cut.

Job type: exec

Limit	Value	Notes
Default timeout	5 minutes
Longest timeout	30 minutes
Output kept per stream	1 MB	Characters of stdout and of stderr.

Job type: browser.batch

Limit	Value	Notes
Pages per job	100
Time per page	45 seconds	Including extraction.
Extraction time reserved per page	5 seconds
Wait for the load event	15 seconds
Longest waitMs	20 seconds
Scrolling time	10 seconds
robots.txt fetch timeout	20 seconds
robots.txt size read	500 KB
Default delay between pages	8 seconds
Shortest delay	5 seconds	Also between jobs for the same origin.
Longest delay or crawl-delay	1 minute	Sites asking for a longer crawl-delay are skipped.
Default captures per page	10
Most captures per page	50
Captured response body	5 MB	Characters; longer bodies are cut.
HTML kept	2 MB	Characters.
Results per job	50 MB	Pages after this get output_limit.
Page id	200 characters
Page URL	4,000 characters

MCP

Limit	Value	Notes
Request timeout	1 minute
Context value	100,000 characters
Context entries per list page	50
Connector tools on the MCP server	200	Across all connectors. The default; an organization's plan can set another.

Connectors

Limit	Value	Notes
Connectors per organization	50	The default; an organization's plan can set another.
Slug	24 characters
Credential	4,096 characters
Tool discovery timeout	15 seconds
Tool call timeout	30 seconds
Tool list pages read	10
Tools cached per connector	100
Tool description kept	2,000 characters
Size of one cached tool	32,000 bytes	Larger tools are skipped.
Size of all cached tools	300,000 bytes
Exposed tool name	64 characters
Response size	4 MB
Connection timeout	10 seconds

Database explorer

Limit	Value	Notes
Items per page	100
Filters per scan or query	10
Attributes in a projection	50
Item size	400 KB	DynamoDB's own limit.
Attributes included in an index	20
Tags per change	40

Storage browser

Limit	Value	Notes
Files per list page	1,000
Upload size	5 KB	Per file.
Files per upload request	100
Upload link lifetime	15 minutes
Download link lifetime	5 minutes
Files per delete request	1,000
CORS rules	20
Lifecycle rules	50
Lifecycle expiry	3,650 days

Mail

Limit	Value	Notes
Messages sent per day	500	Default plan, per organization.
Recipients per message	50	Default plan.
Message size	25 MB	Default plan.
Message size on any plan	40 MB	The Amazon SES maximum.
Attachments per message	50
Addresses per To, Cc or Bcc	500
Subject	998 characters
Signature	20,000 characters
Labels per mailbox	200
Conversations per action	100
Members per mailbox	100
Search words used	5	Words of 2 or more characters.
Text searched per message	8,000 characters	After the subject and people.
App passwords per person	50	For Apple devices.
Signed-in Apple devices per person	50	Devices set up with a sign-in profile.
Apple device sign-in kept unused	90 days	Each refresh extends it.
Approval code from another device	5 minutes	Works once.
App password expiry	3,650 days	0 or empty means no expiry.
Wrong app passwords per address and network	10	Per 15 minutes; then sign-ins pause until the window ends.
Wrong app passwords per address	50	Per 15 minutes, from anywhere.
Changes per device sync	512	iPhone and iPad; the device asks for more until it has everything.
Messages per folder on a device	5,000	The newest within the device's Mail Days to Sync.
Search results per device request	100	iPhone and iPad Mail search and directory lookups.
Unsent upload kept	1 day	Attachments uploaded but never sent.

Knowledge

Limit	Value	Notes
Page content	1,000,000 bytes	Stored JSON of blocks and Markdown.
Text indexed for search	4,000 characters	From the start of each page.
Pages in the tree	2,000
Rows returned with a database	1,000
Search results	20
Favorites per person	200
Search terms used	8
Nesting depth	64
Properties per database	50
Options per select property	100
Text property value	2,000 characters
Page title	200 characters
Earlier versions kept	30 days

Chat

Limit	Value	Notes
Message length	200,000 characters
Tool steps per answer	25
Response time	14 minutes

Platform API

Limit	Value	Notes
Request timeout	30 seconds

Limits

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