specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: Abstract API Phone Validation
providerId: abstractapi-phone
created: '2026-07-12'
modified: '2026-07-12'
reconciled: false
tags:
- Phone Validation
- Number Verification
- Rate Limiting
- Quotas
description: >-
  The Abstract API Phone Validation API applies two overlapping limits: a
  per-second throughput cap and a monthly request quota tied to your plan.
  Abstract documents a throughput limit of 3 requests/second across tiers
  (including the free tier). The monthly request allowance is set by the plan -
  100 requests/month on the free tier, higher on paid tiers. Exceeding either
  limit returns an HTTP 429. Values here are drawn from Abstract API's public
  documentation and are not reconciled against a live account.
notes: >-
  Verify the current per-second rate and monthly allowances on the Abstract API
  pricing/documentation pages during reconciliation. Clients should implement
  retry with exponential backoff and honor any Retry-After header on 429
  responses.
sources:
- https://www.abstractapi.com/api/phone-validation-api
- https://www.abstractapi.com/pricing
responseCodes:
  throttled: 429
limits:
- name: Requests Per Second
  scope: account
  metric: requests
  limit: 3 per second
  notes: Documented throughput cap shared across free and paid tiers.
- name: Monthly Request Quota
  scope: account
  metric: requests
  limit: per plan (100/month on free tier; higher on paid tiers)
  notes: Set by the selected plan's monthly request allowance.
policies:
- name: Backoff Strategy
  description: On a 429 response, back off with exponential delay and jitter and honor any Retry-After header before retrying.
- name: Quota Reset
  description: Monthly request allowances reset on the plan's monthly billing cycle.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com