Data Validation
Providers using this tag (21)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 1 Complete, well-documented, and agent-ready
Strong 1 Solid coverage with minor gaps
Developing 6 Usable, with meaningful gaps to close
Thin 6 Limited public surface area
Emerging 1 Early or largely undocumented
Minimal 6 Almost no public developer surface
APIs with this tag (40)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Strong 1 Solid coverage with minor gaps
Thin 33 Limited public surface area
Advanced Email Verification APIVerify an email address from a single query parameter and get a response with code and success. Useful for ...AML & Sanctions Verification APICheck a name against sanctions and AML screening data, with optional date of birth, country, and result lim...ApyHub Data Validation APIThe Data Validation API from ApyHub — 10 operation(s) for data validation.BIN IP Checker APIValidate a BIN against an IP address and get a simple response envelope with `success` and `code`. Useful f...BIN Lookup APILook up a card BIN from a single query parameter and get a success envelope with a code. Useful for payment...Calculate Domain Age APILook up a domain's WHOIS creation date and age in days or years. Useful for onboarding, fraud review, and S...Check Password Strength APIScore a password by length, complexity, and common-password checks. Returns score, max, level, and per-rule...Check Spelling APIDetect misspelled words in text and get correction suggestions. Returns the original input, misspelled word...Company KYB Lookup APIVerify companies by LEI, VAT, name, and country. Get a JSON envelope with success status and lookup results...CSV & JSON Data Cleaning and DeduplicationAnalyze CSV text or records for cleanup and duplicate checks. Configure key, required, and numeric columns ...Detect File type APIInspect a binary file's magic bytes to return filename, extension, MIME type, and description. Useful for v...Disposable Email Checker APICheck whether an email uses a known disposable domain. Returns the email, domain, and a disposable boolean ...Domain Availability APICheck whether a domain is available, taken, or indeterminate. Validate candidate names for signup flows, re...Domain WHOIS Lookup APIGet a domain’s WHOIS record from a domain query. Returns registrar, expiry date, creation date, status, ema...Email Deliverability Score APICheck an email address for syntax, MX records, and disposable domains. Get a score, level, and boolean chec...Email MX Lookup APICheck whether an email domain has MX records. Returns email, domain, has_mx, and mx_records for deliverabil...Generate Fake Address APIGenerate 1 to 50 fake street addresses as plain strings. Useful for test data, sample forms, and staging da...Identity & Fraud Verification APIValidate IP, BIN, DOB, VAT, IBAN, email, phone, address, and more in one request. Useful for onboarding, ri...Ingredient Parser From Text APIParse ingredient text into additives, allergens, trace warnings, and dietary flags. Useful for food labels,...Parse & Normalize US Address APIParse a free-form address line and optionally a country code into a structured response. Useful for checkou...Phone Carrier Lookup APILook up a phone number’s carrier, region, time zones, and number type. Useful for contact validation, routi...Phone Number Formatter APIParse a phone number into E.164, international, and national formats. Returns validity plus country and reg...Phonetic Text Search APICompare a source word against candidate strings using Metaphone or Soundex. Returns matching words with sha...Search & Filter BIN Database APISearch BIN records by bank, brand, country, prefix, level, or card type. Get a response envelope with a suc...Search US Address APISearch address matches from a text query, with optional country filtering and result limits. Useful for aut...US Routing Number Lookup APILook up a U.S. bank by 9-digit routing number. Use it to validate payment details and retrieve the routing ...US Routing Number Validation APIValidate a 9-digit U.S. routing number from a query parameter. Use it to reject invalid bank details before...Validate and Format Phone Number APIValidate phone numbers in E.164 or national format and get normalized country-aware output. Useful for sign...Validate EU VAT Batch APIValidate up to 10 VAT numbers per request and get per-item valid results, with lookup errors flagged separa...Validate IBAN Checksum APIValidate an IBAN from a query parameter and use the result to catch invalid bank account numbers before pay...Validate Or Generate Barcode Check Digits APIValidate or generate barcode check digits for EAN, UPC, and ISBN values. Returns validity and check-digit f...Validate Payment Card APIValidate card numbers with Luhn and length checks, identify the network, and return masked or formatted val...VAT Company Lookup APIVerify a VAT number and retrieve the matching company name, address, country code, and validity status for ...
Minimal 6 Almost no public developer surface
US AutocompleteEnter address data quickly with real-time address suggestionsUS ExtractExtract postal addresses from any text including emailsUS Street AddressValidate and append data for any US postal addressPostman EchoTest api server to receive and return value from HTTP methodPurgoMalumContent validator against profanity & obscenityVATlayerVAT number validation
Companies reaching this through an API (2)
These companies publish an API, specification or operation carrying “Data Validation” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Score breakdown
Frequency
46.5
log-scaled weighted occurrences
Breadth
0.3
spread across providers
Quality lift
33.1
mean composite of providers using it
Cohesion
0.6
strength of nearest seed neighbor
Related tags
Agent-Native 5 co-occurrences
Public APIs 6 co-occurrences
Developer Tools 5 co-occurrences
MCP 5 co-occurrences
Company 5 co-occurrences
Where this tag comes from
Provider tag21
Api tag40
Openapi tag2
Openapi op tag19
Cohort brief
Auto-generatedThe 24 providers in the APIs.io catalog tagged Data Validation, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
24
of 25 in the catalog
Mean Kin Score
even vs catalog
Mean Agent Readiness
21.3
+8.5 vs catalog 12.8
Spread
–
median · σ
How the 24 split by band
Exemplar 1Strong 1Developing 6Thin 6Emerging 4Minimal 6
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Developer Ergonomics | 36.2 | 23.8 | +12.4 | 24 |
| Contract Quality | 27.5 | 17.7 | +9.8 | 24 |
| Access Clarity | 34.6 | 26.5 | +8.1 | 24 |
| Operational Transparency | 17.7 | 13.2 | +4.5 | 24 |
| Discoverability | 60.4 | 58 | +2.4 | 24 |
| Contract Governance | 6.8 | 7 | -0.2 | 24 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 33% | 15% | +18 |
| MCP server (first-party) | 25% | 13% | +12 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 17% | 12% | +5 |
| Security | 100% | 98% | +2 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 17% | 18% | -1 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 Oneschema
- 2 Neutrino API
- 3 VOYGR
- 4 tryverifyemail-com
- 5 pricklymails-com
- 6 Avalix
- 7 getapi-nl
- 8 Flatfile
- 9 abundanceapis-com
- 10 FluentEDI
Top by Agent Readiness
- 1 tryverifyemail-com {"score" => 52.7, "band" => "agent-ready"}
- 2 Oneschema {"score" => 45.4, "band" => "agent-native"}
- 3 pricklymails-com {"score" => 45.4, "band" => "agent-ready"}
- 4 FluentEDI {"score" => 44.8, "band" => "agent-native"}
- 5 VOYGR {"score" => 36, "band" => "agent-ready"}
- 6 Neutrino API {"score" => 33.2, "band" => "agent-ready"}
- 7 Abstract API Phone Validation {"score" => 33.2, "band" => "agent-ready"}
- 8 Avalix {"score" => 32.1, "band" => "agent-ready"}
- 9 Flatfile {"score" => 29, "band" => "agent-ready"}
- 10 getapi-nl {"score" => 28.2, "band" => "agent-aware"}
All 25 members of this roster resolve to a provider in the
catalog; 24 carry a score (96%).
The figures above describe the scored members only.
Coverage caveat. 21 of 24 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 2 November 2026, across 37080 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Coverage caveat. 21 of 24 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 2 November 2026, across 37080 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.