Feature
Request Signing
HMAC or cryptographically signed requests.
23 providers
93 APIs
23 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.
23 API providers on the APIs.io network offer request signing. The highest-rated are fal, dLocal, fireblocks, Ashby, Onfleet.
Providers
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 2 Complete, well-documented, and agent-ready
Strong 10 Solid coverage with minor gaps
fireblocksFireblocks is an institutional digital-asset and stablecoin infrastructure company providing MPC-secured cu...AshbyAshby is a modern all-in-one recruiting platform combining Applicant Tracking System (ATS), sourcing/CRM, i...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...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...ReplicateReplicate lets you run machine learning models in the cloud with a simple API. Thousands of open-source mod...
Developing 6 Usable, with meaningful gaps to close
FintectureFintecture is a French Open Banking payments platform and ACPR-authorised payment institution (#17248). Its...KushkiKushki is an Ecuador-headquartered LatAm fintech operating as a regional non-banking acquirer for the Andea...GreenhouseGreenhouse Software is an enterprise applicant tracking system (ATS) and end-to-end hiring platform spannin...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
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...Pagar.mePagar.me is the API-first online payments platform from Stone Co., one of Brazil's largest financial techno...
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.
22 outbound webhook event types — HMAC-SHA256 signed via Ashby-Signature header — with automatic retries and related-webhook ordering guaranteesAWS 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 AuthenticationPayments API authenticated with V2-HMAC-SHA256 signature (X-Login, X-Trans-Key, X-Date)RSA 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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