Public APIs with no API key — page 50

1,522 APIs you can call without signing up for a key — handy for prototypes, demos and learning.

Casheva

Financial data for Argentina, Spain and Mexico: USD rates, inflation, Euribor, ICL

CIS Automotive API

<div style="">This API provides access to our Automotive Data. Use of this API is subject to our <a href="https://autodealerdata.com/tos">Terms of Service</a></div>   <h3 style="">For a quick start guide <a href="/APIQuickStart">click here</a></h3>   <div> If you signed up through RapidAPI make your test calls <a href="https://rapidapi.com/competitive-intelligence-solutions-llc-competitive-intelligence-solutions-llc-default/api/cis-automotive">here</a></div>   <div>The general workflow is to: <br/> <div><strong>1.</strong> Authenticate with your CIS Automotive API Keys to get a Json Web Token (JWT). Do not use RapidAPI keys.</div> <div><div><strong>2.</strong> Then use that token as an argument when calling other endpoints.</div>   <div>Equivalent HTTP GET and POST methods are available for some endpoints. </div>   <div>Endpoints may appear more than once on this page if they are associated with multiple tags. eg "Sales Data", "Premium", "Pro Plan or Greater" To see which endpoints are included in different plans look under the "X Plan or Greater" tags for the respective plan name.</div>   <h3>If you signed up for our API through RapidAPI you can make your test calls <a href="https://rapidapi.com/competitive-intelligence-solutions-llc-competitive-intelligence-solutions-llc-default/api/cis-automotive">on their platform</a>. Your RapidAPI credentials will not work on this page.</h3><h3> Do not use your RapidAPI keys on this page.</h3> <h3>If you signed up with us and have an account, you must first authenticate with your API Keys and retrieve a Json Web Token (JWT) from the /getToken endpoint to access the other endpoints.</h3> <h3>Your JWT is a required argument to all endpoints.</h3></div>

No auth35 endpoints

Citability

Development

AI visibility scoring for domains: ADP, llms.txt, Schema.org, MCP endpoints

No authCORS

Classify

Security

Encrypting & decrypting text messages

No authCORS

CompareFairly

Shopping

Neutral, sourced comparisons of products and services across any category, localized by language and country; per-criterion values, sub-scores and the source link behind each value

No authCORS

CountdownsHQ

Calendar

Dates and timezone-correct live countdowns for 150+ holidays and observances in 18 countries

No authCORS

Court Rules API

Government

Court Rules is a free reference for U.S. federal court practice: the Federal Rules of Civil Procedure, district local rules, individual judge standing orders and court holidays, organized by court. The deadline calculator counts calendar, business and court days and applies each district's holidays. A public API and an MCP server at courtrules.app/mcp serve the same data to legal-tech tools.

No auth

CryptoLabel

Cryptocurrency

Free crypto address labels. Identify known addresses on major networks with a free API

No authCORS

Data2CRM.API

Geocoding

<p>Make use of our in-depth documentation to get more information about the various functions of the service. Those willing to explore the mechanics of Data2CRM.API can test it in live regime using the short code samples.</p><p>Select CRM: <span id="docs-select-crm" style="font-weight: bold">Loading... please wait</span></p><p>Here are the API access keys:<br><b>X-API2CRM-USER-KEY</b>: <span id="docs-user-key">e2a6379ab878ae7e58119d4ec842bf9c</span><br><b>X-API2CRM-APPLICATION-KEY</b>: <span id="docs-crm-key">7ae5b17008fb414d84981191cf3b66a476ef8bef</span></p><p id="docs-crm-access">The CRM access details are:<br><b>URL</b>: <a id="docs-crm-url" href="https://login.salesforce.com/" target="_blank">https://login.salesforce.com/</a><br><b>E-mail / Username</b>: <span id="docs-crm-username">[email protected]</span><br><b>Password</b>: <span id="docs-crm-password">data2crmapi123</span></p>

No auth336 endpoints

Defend Network

Security

Free no-auth JSON feed of exploited CVEs with CVSS, EPSS and CISA KEV status

No authCORS

DigiDates

Calendar

Various date and time calculations

No authCORS

Diplome.app — API de recherche RNCP

Government

API publique de recherche dans le Répertoire National des Certifications Professionnelles (RNCP). Recherche par intitulé, code RNCP, organisme certificateur ou SIREN/SIRET ; renvoie les titres correspondants (intitulé, code, niveau européen, dates d'enregistrement, statut actif/échu, certificateur) au format JSON. Données issues de l'export officiel de France Compétences (data.gouv.fr), synchronisées quotidiennement, sous Licence Ouverte / Etalab 2.0.

No auth