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GET
Vietnam Manufacturing PMI (S&P Global)

Authorizations

X-API-Key
string
header
required

Your HayInsights API key (prefixed apk_). Create and manage keys in the HayInsights dashboard (Account → API keys).

Send it in the X-API-Key header on every request to /openapi/v1/*. Which data domains you may access and your request quota are both governed by the subscription plan attached to the key — see the Plans & features and Rate limits guides.

Query Parameters

period
enum<string>
default:1Y

Window length, counted back from the latest month that has a reading (that month included). Case-insensitive.

Available options:
3M,
6M,
1Y,
3Y
Example:

"3M"

asOf
string<date>

Point-in-time date (YYYY-MM-DD): return only what was known by the end of that day (UTC), leaving out readings and revisions published later. Omit for the latest data.

Example:

"2026-10-01"

Response

Monthly PMI series for the requested window.

Standard success envelope shared by every endpoint. Each operation's response wrapper extends this (via allOf) and adds a typed data property.

success
boolean
required

Always true for a successful response.

Example:

true

statusCode
integer
required

Mirrors the HTTP status code.

Example:

200

data
object
required

S&P Global Vietnam Manufacturing PMI over the requested window, with a summary of the latest reading. When nothing is on record (for example an asOf before the first reading), from, to and latest are null and points is empty.

meta
object

Response metadata for the PMI series. On top of timestamp, it says where the numbers came from, which fields HayInsights computes, and how fresh the response is.