API Reference
Billing
Domains
Emails
Hooks applications
Hooks endpoints
Hooks event types
Hooks messages
Hooks portal
Log drains
Receiving
Risk
- Check an email address POST
- Check an IP address POST
- Check a rate limit POST
- Classify content POST
- Assess an event POST
- Report an assessment's outcome POST
- Create a rate limit bucket POST
- Add an allow or block list entry POST
- Create a rule POST
- Delete a rate limit bucket DELETE
- Remove a list entry DELETE
- Delete a rule DELETE
- Forget a user DELETE
- Retrieve an assessment GET
- Retrieve the calibration GET
- Retrieve a rate limit bucket GET
- Retrieve a list entry GET
- Retrieve a rule GET
- Retrieve the risk settings GET
- List assessments GET
- List rate limit buckets GET
- List allow and block list entries GET
- List rules GET
- Update a rate limit bucket PATCH
- Update a rule PATCH
- Update the risk settings PATCH
Suppressions
Tracking
Webhook endpoints
Update a rate limit bucket
PATCH
/v1/risk/limit_buckets/{id}
Changes the fields given; the next check uses them. Keys keep what they spent, so a smaller bucket can deny a key until it refills.
bearerAuthheader
AuthorizationBearer <token>A secret API key from the dashboard: coss_live_… for production environments, coss_test_… for sandbox environments.
id*stringThe bucket's id.
Coss-Version?"2026-10-10"The API version (a date) to use for this request. Defaults to your organization's version, pinned to the latest one when it first used the API and upgraded from the dashboard. The SDK always sends the version it was built for.
Value in
"2026-10-10"application/json- body
- body
- …
limit?integerRange
1 <= value <= 1000000period_seconds?integerRange
1 <= value <= 86400burst?integerRange
1 <= value <= 1000000on_failure?stringValue in
"allow""deny"The bucket, updated.
application/json- response
- response
- …
object*"risk_limit_bucket"Value in
"risk_limit_bucket"id*stringname*stringWhat POST /v1/risk/limits names it by.
limit*integerTokens added per period_seconds.
period_seconds*integerburst*integerThe bucket's size: how many requests a key can make at once.
on_failure*stringThe answer while COSS can't count (its store is unavailable): allow (fail open) or deny.
Value in
"allow""deny"created_at*stringFormat
date-timeupdated_at*stringFormat
date-timeimport { Coss } from "coss";const coss = new Coss({ apiKey: process.env.COSS_API_KEY, baseUrl: "https://api.coss.com",});const { data, error } = await coss.risk.limitBuckets.update("rsklb_01k7c8m4q2f3e9v6t5r1n0p8yz", { limit: 10, burst: 20,});{ "object": "risk_limit_bucket", "id": "rsklb_01k7c8m4q2f3e9v6t5r1n0p8yz", "name": "password_reset", "limit": 5, "period_seconds": 3600, "burst": 5, "on_failure": "allow", "created_at": "2026-01-15T09:30:00.000Z", "updated_at": "2026-01-15T09:30:00.000Z"}