western-union · Rate Limits

Western Union Rate Limits

Western Union's API rate limits are not publicly documented. Limits, burst behavior, and headers are configured per partner integration in the Mass Payments / Open Banking onboarding kit. Documented batch limits exist for Mass Payments (e.g., 10,000 payments per batch) but no public per-second / per-minute throttle is published.

Western Union Rate Limits is the machine-readable rate-limit profile for western-union on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 2 rate-limit definitions, measuring payments_per_batch and varies.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Money Transfer, Payments, Rate Limiting, and Contact Sales.

2 Limits Throttle: 429
Money TransferPaymentsRate LimitingContact Sales

Limits

Mass Payments Batch Size account
payments_per_batch
10000
Per partner-published Mass Payments brief - up to 10,000 international payments per submitted batch. Not a request-rate limit.
Per-Partner Request Rate contract
varies
see partner agreement
Per-second / per-minute thresholds are agreed per partner; not publicly documented.

Policies

mTLS-Scoped Throttling
Limits attach to the mTLS client certificate / partner identity issued during onboarding; rotate or replace certs through partner support.
Backoff
Use exponential backoff with jitter on 429 / 503; honor Retry-After when present.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/western-union-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.