Primitive Payments API
Collect and pay stablecoin (USDC) payments with x402. Settlement isnon-custodial: funds move directly from payer to payee on-chain via anEIP-3009 authorization the payer signs with their own key, and Primitivenever holds funds. The payee registers a payout address and creates achallenge; the payer signs and settles it under a configurable spendpolicy (kill-switch, per-payment and per-day caps, payee allowlist).
Primitive Payments API is one of 22 APIs that Primitive publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Payments. The published artifact set on APIs.io includes an OpenAPI specification.
This API exposes 9 operations across 7 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.
Requests are made against a single base URL, https://api.primitive.dev/v1.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 2
Primitive Payments API declares
2 security schemes
for authenticating requests.
It accepts HTTP bearer tokens (BearerAuth).
An API key is passed in the query as token (DownloadToken).
BearerAuth— API key with prim prefix or OAuth access token with primoat prefix: Authorization: Bearer . Access is governed by the caller's organization role (owner, admin,…DownloadToken— Signed download token provided in webhook payloads
Paths & Operations 9
Across 7 paths, the API surfaces 9 operations — 4 GET, 4 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.
Collect and pay stablecoin (USDC) payments with x402. Settlement is non-custodial: funds move directly from payer to payee on-chain via an EIP-3009 authorization the payer signs w…
Schemas 3
The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are GateDenial (6 properties), ErrorResponse (2 properties), GateFix (2 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Primitive 12
Other APIs Primitive publishes across the network.
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