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DecryptrDevelopers
Community

Member count history of a public community

A public community's members by day, newest first: current members who joined that day, and the running total of current members by join date (leavers are not recorded). Null under 5.

Cost: 1 call per item returned, at least one item's worth. The request first reserves limit x 1 calls (and is refused with 429 if that many are not available), then pays only for what came back.

Needs scope social:read and the starter plan or above.

How calls are counted

Authorization

headerAuthorizationBearer <dcr_live_<8 hex>_<43 base64url> or dcr_test_...>

Your API key as a Bearer token: Authorization: Bearer dcr_live_....

Path Parameters

slug*string

Community slug.

Match^[A-Za-z0-9_-]{1,60}$

Query Parameters

since?string

Only items at or after this time (ISO 8601 with offset). Must be inside your plan's history (Developer 7 days, Starter 30, Pro 365, Business all). Defaults to the start of your history.

Formatdate-time
until?string

Only items at or before this time (ISO 8601 with offset). Defaults to now; on Developer it is capped 60 minutes before now.

Formatdate-time
cursor?string

next_cursor from the previous page, passed back as it is. Opaque: do not build or change it.

Lengthlength <= 300
limit?integer

Items to return, 1 to 100. Your plan allows max_page calls per request (Developer 10, Starter 25, Pro 50, Business 100), so at most max_page divided by this endpoint's calls per item. Default 20, or that maximum if lower. The request reserves limit x calls per item before it runs: ask only for what you need.

Range1 <= value <= 100

Response Body

OK.

application/json
  1. response
data*array<>
as_of*string

When the response was made.

Formatdate-time
next_cursor*|

Pass as cursor for the next page. null when this is the last page.

disclaimer*string

Plain-language notice. Information only, not financial advice.

Example Request
curl -X GET 'https://data.decryptr.ai/v1/communities/sample-community/members/history?since=2026-10-20T00%3A00%3A00Z&until=2026-10-23T12%3A00%3A00Z&cursor=eyJ0IjoiMjAyNi0xMC0yM1QxMDowMDowMC4wMDBaIn0&limit=10'
Example Response
{  "data": [    {      "day": "2026-10-23",      "joined": 5,      "members": 1800    },    {      "day": "2026-10-22",      "joined": 6,      "members": 1794    },    {      "day": "2026-10-21",      "joined": 7,      "members": 1788    }  ],  "next_cursor": "eyJ0IjoiMjAyNi0xMC0yMVQwMDowMDowMFoifQ",  "as_of": "2026-10-23T12:33:30.000Z",  "disclaimer": "Crowd and model output, not a recommendation. Information only, not financial advice."}

Activity in a public community GET

Posts, replies and distinct posters per hour or day in a public community, newest first. Null where under 5 people posted. Cost: 1 call per item returned, at least one item's worth. The request first reserves limit x 1 calls (and is refused with 429 if that many are not available), then pays only for what came back. Needs scope `social:read` and the pro plan or above.

Public rooms GET

Rooms anyone signed in to Decryptr can read: event rooms and public-read groups, with titles and member counts. Never members, messages or invites. Cost: 1 call per item returned, at least one item's worth. The request first reserves limit x 1 calls (and is refused with 429 if that many are not available), then pays only for what came back. Needs scope `social:read` and the pro plan or above.