HTTP errors
Fix HTTP 405 Method Not Allowed
Trace the method mismatch, inspect the Allow header, and correct the request without guessing.
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AuthenticationPricing accessOpenAPIOfficial SDKsLast checked
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12 results
| API | Category | Access | Authentication | OpenAPI | SDKs | Checked |
|---|---|---|---|---|---|---|
ResendTransactional email for developer-built products | Free tier | API key | Found | 10 | Aug 15 | |
PostmarkTransactional email with delivery-focused tooling | Trial | Token | Reviewing | 7 | Aug 14 | |
TwilioMessaging, voice, email, and verification APIs | Communications | Trial credit | Basic auth | Found | 9 | Aug 14 |
TavilyWeb search and extraction for AI applications | Search | Free tier | API key | Reviewing | 2 | Aug 13 |
AlgoliaHosted search and discovery for applications | Search | Free tier | API key | Found | 12 | Aug 13 |
StripePayments, billing, and financial infrastructure | Payments | Usage based | API key | Found | 8 | Aug 12 |
AdyenGlobal payment processing for larger platforms | Payments | Sales led | API key | Found | 7 | Aug 12 |
MapboxMaps, navigation, geocoding, and location search | Maps | Free tier | Token | Reviewing | 6 | Aug 11 |
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Authentication
401 vs 403 in API responses
Tell an invalid credential from a permission problem and choose the right recovery path.
First requests
cURL bearer-token authentication
Send, inspect, and troubleshoot authenticated requests without leaking credentials.
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