| Check Iban Nl API Call when an agent needs whether an IBAN is a mod-97-valid NL number of length 18. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-nl first. |  syntexa.ch | - | $0.005 | listed |
| Check Iban No API Call when an agent needs whether an IBAN is a mod-97-valid NO number of length 15. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-no first. | syntexa.ch | - | $0.003 | listed |
| Check Iban Pk API Call when an agent needs whether an IBAN is a mod-97-valid PK number of length 24. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-iban-pk first. | syntexa.ch | - | $0.001 | listed |
| Check Iban Pl API Call when an agent needs whether an IBAN is a mod-97-valid PL number of length 28. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-iban-pl first. | syntexa.ch | - | $0.001 | listed |
| Check Iban Ps API Call when an agent needs whether an IBAN is a mod-97-valid PS number of length 29. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ps first. | syntexa.ch | - | $0.002 | listed |
| Check Iban Pt API Call when an agent needs whether an IBAN is a mod-97-valid PT number of length 25. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-iban-pt first. | syntexa.ch | - | $0.01 | listed |
| Check Iban Qa API Call when an agent needs whether an IBAN is a mod-97-valid QA number of length 29. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-qa first. | syntexa.ch | - | $0.003 | listed |
| Check Iban Ro API Call when an agent needs whether an IBAN is a mod-97-valid RO number of length 24. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ro first. | syntexa.ch | - | $0.01 | listed |
| Check Iban Rs API Call when an agent needs whether an IBAN is a mod-97-valid RS number of length 22. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-iban-rs first. | syntexa.ch | - | $0.004 | listed |
| Check Iban Sa API Call when an agent needs whether an IBAN is a mod-97-valid SA number of length 24. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-sa first. | syntexa.ch | - | $0.005 | listed |
| Check Iban Sc API Call when an agent needs whether an IBAN is a mod-97-valid SC number of length 31. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-iban-sc first. | syntexa.ch | - | $0.006 | listed |
| Check Iban Se API Call when an agent needs whether an IBAN is a mod-97-valid SE number of length 24. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-se first. | syntexa.ch | - | $0.002 | listed |
| Check Iban Si API Call when an agent needs whether an IBAN is a mod-97-valid SI number of length 19. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-si first. | syntexa.ch | - | $0.003 | listed |
| Check Iban Sk API Call when an agent needs whether an IBAN is a mod-97-valid SK number of length 24. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-iban-sk first. | syntexa.ch | - | $0.004 | listed |
| Check Iban Sm API Call when an agent needs whether an IBAN is a mod-97-valid SM number of length 27. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-iban-sm first. | syntexa.ch | - | $0.007 | listed |
| Check Iban St API Call when an agent needs whether an IBAN is a mod-97-valid ST number of length 25. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-iban-st first. | syntexa.ch | - | $0.008 | listed |
| Check Iban Tl API Call when an agent needs whether an IBAN is a mod-97-valid TL number of length 23. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-tl first. | syntexa.ch | - | $0.009 | listed |
| Check Iban Tn API Call when an agent needs whether an IBAN is a mod-97-valid TN number of length 24. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-iban-tn first. | syntexa.ch | - | $0.01 | listed |
| Check Iban Tr API Call when an agent needs whether an IBAN is a mod-97-valid TR number of length 26. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-iban-tr first. | syntexa.ch | - | $0.001 | listed |
| Check Iban Ua API Call when an agent needs whether an IBAN is a mod-97-valid UA number of length 29. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ua first. | syntexa.ch | - | $0.002 | listed |
| Check Iban Va API Call when an agent needs whether an IBAN is a mod-97-valid VA number of length 22. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-va first. | syntexa.ch | - | $0.003 | listed |
| Check Iban Vg API Call when an agent needs whether an IBAN is a mod-97-valid VG number of length 24. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-iban-vg first. | syntexa.ch | - | $0.004 | listed |
| Check Iban Xk API Call when an agent needs whether an IBAN is a mod-97-valid XK number of length 20. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-iban-xk first. | syntexa.ch | - | $0.005 | listed |
| Check Isbn API Call when an agent needs whether a string is a valid ISBN-10 or ISBN-13. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-isbn first. | syntexa.ch | - | $0.006 | listed |
| Check Isbn API Call when an agent needs whether an ISBN-10 checksum is valid. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-isbn-10 first. | syntexa.ch | - | $0.004 | listed |
| Check Isbn API Call when an agent needs whether an ISBN-13 checksum is valid. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-isbn-13 first. | syntexa.ch | - | $0.005 | listed |
| Check Issn API Call when an agent needs whether an ISSN checksum is valid. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-issn first. | syntexa.ch | - | $0.001 | listed |
| Check Jwt Shape API Call when an agent needs whether a token has a JWT header shape. No signature check. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-jwt-shape first. | syntexa.ch | - | $0.005 | listed |
| Check Latlon API Call when an agent needs whether a string is a latitude,longitude pair in range. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-latlon first. | syntexa.ch | - | $0.007 | listed |
| Check Lottery Ticket Numbers Against A Draw API Check Lottery Ticket Numbers Against a Draw. Check a lottery ticket against a Powerball, Mega Millions, NY Lotto or Take 5 draw: matched numbers, special-ball match and the base prize tier. |  saylorinnovations.com | - | $1,000.00 | listed |
| Check Luhn API Call when an agent needs whether the digits in a string pass Luhn. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-luhn first. | syntexa.ch | - | $0.002 | listed |
| Check Mac Colon API Call when an agent needs whether a string is a colon-separated MAC address. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-mac-colon first. | syntexa.ch | - | $0.001 | listed |
| Check Mac Dash API Call when an agent needs whether a string is a dash-separated MAC address. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-mac-dash first. | syntexa.ch | - | $0.002 | listed |
| Check Mac Dot API Call when an agent needs whether a string is a Cisco dotted MAC address. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-mac-dot first. | syntexa.ch | - | $0.003 | listed |
| Check Mime API Call when an agent needs whether a string is a type/subtype media type. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-mime first. | syntexa.ch | - | $0.004 | listed |
| Check Mod97 API Call when an agent needs whether a numeric string is 1 mod 97. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-mod97 first. | syntexa.ch | - | $0.003 | listed |
| Check Npm Packages Before You Install Or Upgrade API Check npm packages before you install or upgrade. Send {"packages":["lodash@4.17.20","express"]} or a package.json (dependencies and devDependencies), up to 50 packages. Per package: latest version and publish date, whether a pinned version is behind, license, deprecation notice, weekly downloads, and known vulnerabilities from OSV with severity and first fixed version. Deterministic registry data, no LLM. |  sslip.io | - | $0.005 | listed |
| Check Phone E164 API Call when an agent needs whether a phone number matches E.164. No carrier lookup. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-phone-e164 first. | syntexa.ch | - | $0.001 | listed |
| Check Phone Min10 API Call when an agent needs whether a phone has at least 10 digits. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-phone-min10 first. | syntexa.ch | - | $0.004 | listed |
| Check Phone Min7 API Call when an agent needs whether a phone has at least 7 digits. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-phone-min7 first. | syntexa.ch | - | $0.003 | listed |
| Check Phone Nanp API Call when an agent needs whether a phone number matches NANP +1 rules. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-phone-nanp first. | syntexa.ch | - | $0.002 | listed |
| Check Plus Code API Call when an agent needs whether a string is a full Open Location Code. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-plus-code first. | syntexa.ch | - | $0.006 | listed |
| Check Schema 2019 API Call when an agent needs a limited JSON Schema 2019-09 check. Dialects disagree on exclusive bounds and format. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-schema-2019-09 first. | syntexa.ch | - | $0.008 | listed |
| Check Schema 2020 API Call when an agent needs a limited JSON Schema 2020-12 check. Dialects disagree on exclusive bounds and format. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-schema-2020-12 first. | syntexa.ch | - | $0.009 | listed |
| Check Schema Draft API Call when an agent needs a limited JSON Schema draft-06 check. Dialects disagree on exclusive bounds and format. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-schema-draft-06 first. | syntexa.ch | - | $0.006 | listed |
| Check Schema Draft API Call when an agent needs a limited JSON Schema draft-07 check. Dialects disagree on exclusive bounds and format. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/check-schema-draft-07 first. | syntexa.ch | - | $0.007 | listed |
| Check Schema Draft API Call when an agent needs a limited JSON Schema draft-04 check. Dialects disagree on exclusive bounds and format. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/check-schema-draft-04 first. | syntexa.ch | - | $0.005 | listed |
| Check Semver Caret API Call when an agent needs whether a string is a caret semver range. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-semver-caret first. | syntexa.ch | - | $0.002 | listed |
| Check Semver Loose API Call when an agent needs whether a string is semver with an optional leading v. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-semver-loose first. | syntexa.ch | - | $0.001 | listed |
| Check Semver Strict API Call when an agent needs whether a string is strict semver without a leading v. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-semver-strict first. | syntexa.ch | - | $0.01 | listed |