# DeBounce

**Canonical:** https://apis.io/providers/debounce/  
**Website:** https://debounce.com/  
**APIs profiled:** 6

DeBounce is an email validation and verification REST API that helps developers ensure the deliverability and quality of email addresses at scale. The API supports real-time single email validation, asynchronous bulk list processing, and data enrichment via reverse email lookup. It detects disposable addresses, role-based emails, catch-all domains, syntax errors, and performs MX record and SMTP-level mailbox verification. DeBounce offers pay-as-you-go credit-based pricing with no monthly subscription required, full API access at every tier, and credits that never expire. The surface is split across four hosts — api.debounce.io for validation, enrichment and account operations, bulk.debounce.io for asynchronous list jobs, disposable.debounce.io for the free disposable detector, and logo.debounce.com for the free company logo lookup — and DeBounce publishes OpenAPI 3.1.0, llms.txt, an A2A agent card, an agent skill and a remote MCP server from its developer portal.

## Kin Score — 72.3 / 100 (exemplar)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 72.3).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 68.0 |
| Governance | 55.3 |
| Contract Governance | 55.3 |
| Operational Transparency | 55.3 |
| Developer Ergonomics | 69.0 |
| Commercial Clarity | 92.1 |
| Access Clarity | 92.1 |

## Agent readiness — 68.2 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | documented |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | verified |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | conformant |
| Dry Run Mode | na |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (6)

- **DeBounce Validation API** — Real-time single email address validation. Returns a deliverability result (Safe to Send, Risky, Invalid, Unknown), a result code, role-account and free-provider flags, a did-yo...
- **DeBounce Bulk API** — Asynchronous bulk email list validation on bulk.debounce.io. Submit the URL of a hosted CSV or TXT list for processing, receive a list_id, then poll the status endpoint for the ...
- **DeBounce Data API** — Reverse email lookup / data append. Returns additional contact data associated with an email address. The same enrichment engine is reachable from the single-validation endpoint...
- **DeBounce Account API** — Account operations. Returns the remaining credit balance on the account and a dated API usage history for a requested start/end window, so consumers can monitor consumption and ...
- **DeBounce Disposable Detector API** — Free, unauthenticated disposable email detector on disposable.debounce.io. A single GET with an email address or domain returns whether it belongs to a known disposable or tempo...
- **DeBounce Logo API** — Free company logo lookup service positioned as a drop-in replacement for the deprecated Clearbit Logo API. A GET against logo.debounce.com with a company domain returns a high-q...

## MCP servers (1)

- **DeBounce MCP Server** — DeBounce serves two Model Context Protocol endpoints from its own hosts. The developer-portal server is anonymous and answers tools/list live — its three tools are documentation...

## Agentic access (1)

- **Debounce Agentic Access** — 7 operations

## Security (2)

- **Debounce Authentication** — apiKey · 1 scheme
- **Debounce Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Debounce Plans Pricing**

## Tags

Email Validation, Email Verification, Deliverability, Disposable Email Detection, MX Records, Bulk Email Validation, Data Enrichment, Syntax Validation, Reverse Email Lookup, Logo API

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/debounce/). Scores are computed from the provider's own public artifacts under a published rubric.