Feature
Request Signing
HMAC or cryptographically signed requests.
21 providers
88 APIs
21 declared variants
Callers sign requests with a shared secret or private key so the provider can verify integrity and origin. Common on payments, trading, and webhook-verification surfaces.
21 API providers on the APIs.io network offer request signing. The highest-rated are fal, Fireblocks, Onfleet, AWS Braket, RocketReach.
Providers
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 1 Complete, well-documented, and agent-ready
Strong 9 Solid coverage with minor gaps
FireblocksFireblocks is an institutional digital-asset and stablecoin infrastructure company providing MPC-secured cu...OnfleetOnfleet is an AI-powered last-mile delivery management platform that orchestrates fleet operations, dispatc...AWS BraketAmazon Braket is AWS's fully managed quantum computing service. It provides a unified API and SDK for explo...RocketReachRocketReach is a Seattle-based B2B contact data and sales intelligence provider that maintains a database o...AllegionAllegion plc is a global security products company with $3.8B in 2024 revenue, 13,000+ employees, and 30+ b...FintectureFintecture is a French Open Banking payments platform and ACPR-authorised payment institution (#17248). Its...BridgeBridge (Bridge Interactive / Bridge Data Output) is a Zillow Group company that runs the Bridge Platform — ...MetaMapMetaMap (formerly Mati) is an identity verification platform founded in 2017 in San Francisco and headquart...ConektaConekta is a Mexico-based payment processor that lets businesses accept credit and debit cards, OXXO cash v...
Developing 6 Usable, with meaningful gaps to close
GreenhouseGreenhouse Software is an enterprise applicant tracking system (ATS) and end-to-end hiring platform spannin...ReplicateReplicate lets you run machine learning models in the cloud with a simple API. Thousands of open-source mod...KushkiKushki is an Ecuador-headquartered LatAm fintech operating as a regional non-banking acquirer for the Andea...TrackingMoreTrackingMore is a multi-carrier shipment tracking platform offering a unified REST API that integrates with...LBankLBank is a global cryptocurrency exchange providing REST and WebSocket APIs for spot trading, ETF/leveraged...LinearLinear is an issue tracking and product development platform for software teams covering Intake, Plan, Buil...
Thin 5 Limited public surface area
Pagar.mePagar.me is the API-first online payments platform from Stone Co., one of Brazil's largest financial techno...RiskifiedRiskified (NYSE RSKD) is an Israeli ecommerce risk-management platform that uses machine learning and a glo...OPayOPay is a Nigerian mobile money and fintech super-app operated by Blue Ridge Microfinance Bank (OPay Digita...FawryFawry is Cairo-based Egypt's leading provider of e-payments and digital finance solutions, operating a nati...MoovitMoovit is a Tel Aviv-founded urban mobility company acquired by Intel in May 2020 for approximately $900M a...
What Providers Actually Declared
This feature is a canonical term. These are the free-text strings
providers wrote in their own apis.yml that map onto it.
AWS SigV4 authentication and full IAM integration including ABAC via resource tagsAsynchronous lookup results delivered via webhooks with signed payloads and RR-Request-ID correlationFiles input via signed URLsHMAC-SHA256 authentication (X-RISKIFIED-HMAC-SHA256 + X-RISKIFIED-SHOP-DOMAIN headers) with versioned Accept headerHMAC-SHA256 authentication with API_KEY and nonce/timestamp signingHMAC-SHA256 signed webhooks via Linear-Signature headerHMAC-SHA256 webhook signing via /webhooks/secret with X-Onfleet-Signature headerHMAC-SHA512 Signature AuthenticationRSA and HMAC AuthenticationRecruiting Webhooks with HMAC SHA-256 signature verificationSHA-256 request signing using per-merchant secureKeyVerification media (documents, photos, videos) retrieval via signed URLsWebhook callbacks for queue completion with HMAC signature verificationWebhook events via POST with HMAC-SHA256 signature verificationWebhook events with signature verification and an in-console Event SimulatorWebhook notifications with signed payloads, retry policy, and exponential backoffWebhook signature verification via public keyWebhooks API for real-time listing change events with PKI-signed payloads and exponential-backoff retriesWebhooks V2 with replay-from-history and RSA-SHA512 signature verificationWebhooks for asynchronous order, charge, subscription, and payout events with signature verification and configurable retriesWebhooks with signature verification
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