Development x402 offerings

HTTP 101 Switching Protocols: what it means (upgrade accepted (e.g. WebSocket)), what a client should do (switch protocol), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 102 Processing: what it means (WebDAV: still working), what a client should do (wait), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 103 Early Hints: what it means (preload hints before the final response), what a client should do (start preloading), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 200 OK: what it means (success), what a client should do (use the body), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 201 Created: what it means (resource created; Location points at it), what a client should do (read Location), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 202 Accepted: what it means (queued for async processing), what a client should do (poll the status URL), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 203 Non-Authoritative Information: what it means (transformed by a proxy), what a client should do (use with care), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 204 No Content: what it means (success with empty body), what a client should do (nothing to parse), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 205 Reset Content: what it means (reset the form/view), what a client should do (reset UI), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 206 Partial Content: what it means (range request served), what a client should do (assemble ranges), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 207 Multi-Status: what it means (WebDAV: per-resource statuses in XML), what a client should do (parse each status), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 208 Already Reported: what it means (WebDAV: binding already listed), what a client should do (skip), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 226 IM Used: what it means (delta encoding applied), what a client should do (apply delta), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 300 Multiple Choices: what it means (several representations), what a client should do (pick one), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 301 Moved Permanently: what it means (permanent redirect; method may change to GET), what a client should do (update stored URL), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 302 Found: what it means (temporary redirect; method may change to GET), what a client should do (follow, keep old URL), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 303 See Other: what it means (redirect to a GET result page), what a client should do (GET the Location), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 304 Not Modified: what it means (conditional request: cached copy is current), what a client should do (use cache), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 307 Temporary Redirect: what it means (temporary; method and body preserved), what a client should do (resend same method), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 308 Permanent Redirect: what it means (permanent; method and body preserved), what a client should do (update URL, resend same method), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 400 Bad Request: what it means (malformed request), what a client should do (fix the request), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 401 Unauthorized: what it means (authentication required or failed), what a client should do (authenticate (see WWW-Authenticate)), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 402 Payment Required: what it means (x402: pay to access (PAYMENT-REQUIRED header)), what a client should do (sign the payment and retry), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.

HTTP 403 Forbidden: what it means (authenticated but not allowed), what a client should do (do not retry without new rights), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-code reference for error handling in agents and integrations. $0.01 per call.