# ExchangeRebel Validity Check API

**Canonical:** https://apis.io/apis/exchangerebel-com/exchangerebel-com-validity-check-api/  
**Provider:** ExchangeRebel — https://apis.io/providers/exchangerebel-com/  
**Base URL:** https://exchangerebel.com  
**Documentation:** https://exchangerebel.com/api.html

ExchangeRebel Validity Check API is one of 112 APIs that [ExchangeRebel](https://apis.io/providers/exchangerebel-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Validity Check. The published artifact set on APIs.io includes an OpenAPI specification.

The Validity Check API from ExchangeRebel — 8 operation(s) for validity check.

## Operations (8)

| Method | Path | Summary |
|---|---|---|
| GET | `/toll/validity` | Validity Check service catalog |
| GET | `/toll/validity/health` | Validity Check service health |
| GET | `/toll/validity/criteria` | The published validity criteria and thresholds |
| GET | `/toll/validity/corpus` | The pinned public test corpus identity |
| POST | `/toll/validity/precheck` | Free headline pre-check of one validity submission |
| POST | `/toll/validity/upto` | Full signed ceiling-exposure statement for one upto challenge |
| POST | `/toll/validity/validity` | Full signed validity-window evaluation of one payload at one stated instant |
| GET | `/toll/validity/metrics` | Validity Check aggregate counters |

## Machine-readable artifacts (1)

- **OpenAPI** — https://artifacts.apis.io/exchangerebel-com/openapi/exchangerebel-com-validity-check-api-openapi.yml

## Other ExchangeRebel APIs (12)

- [ExchangeRebel A2A Messaging API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-a2a-messaging-api/)
- [ExchangeRebel Accessibility Scan API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-accessibility-scan-api/)
- [ExchangeRebel Activity.json API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-activity-json-api/)
- [ExchangeRebel Address Verdicts API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-address-verdicts-api/)
- [ExchangeRebel Agent Data Core API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-agent-data-core-api/)
- [ExchangeRebel Agent Data Core Arena API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-agent-data-core-arena-api/)
- [ExchangeRebel Agent Data Core Packs API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-agent-data-core-packs-api/)
- [ExchangeRebel Anomaly Detection API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-anomaly-detection-api/)
- [ExchangeRebel Apidiff API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-apidiff-api/)
- [ExchangeRebel Argument Check API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-argument-check-api/)
- [ExchangeRebel Artefact Correspondence API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-artefact-correspondence-api/)
- [ExchangeRebel Audio Transcription API](https://apis.io/apis/exchangerebel-com/exchangerebel-com-audio-transcription-api/)

## Tags

Validity Check

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/exchangerebel-com/exchangerebel-com-validity-check-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/exchangerebel-com/.