x402basequality 0.35

SendGrid integration token via x402 micropayment on Base for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/integrations/sendgrid/token

What it does

This endpoint at lowpaymentfee.com provides a SendGrid integration token accessible through the x402 payment protocol. It is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML, finance, and infrastructure categories, all settled on the Base network using USDC.

The endpoint accepts POST requests and returns an application/json response. Payment is handled via the x402 exact-payment scheme: callers attach an X-PAYMENT header with a USDC payment on Base. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. The platform advertises no API keys, no rate limits, and instant access — you pay per request with no minimums or commitments.

The specific functionality of this endpoint — what the returned "token" enables or represents in the context of SendGrid — is not documented in the available crawl material. It likely provisions or returns a SendGrid API token or session credential, but this is inferred from the URL path rather than confirmed by documentation. No OpenAPI schema, request body specification, or response examples are provided.

Capabilities

x402-paymentusdc-basesendgrid-integrationpay-per-requestno-api-key

Use cases

  • —Obtaining a SendGrid integration token without traditional API key signup
  • —Programmatic access to SendGrid services via pay-per-call micropayments
  • —Agent-driven email workflows that need on-demand SendGrid credentials

Fit

Best for

  • —Agents or services needing ephemeral SendGrid tokens without account management
  • —Developers who want to pay per use with crypto (USDC on Base)
  • —Low-volume or bursty email integration needs

Not for

  • —High-volume email sending where a direct SendGrid subscription is cheaper
  • —Users who need detailed documentation or guaranteed SLAs
  • —Non-crypto users who cannot settle payments on Base

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/integrations/sendgrid/token \
  -H "X-PAYMENT: <x402-payment-header>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/integrations/sendgrid/token
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation on request body, response format, or what the SendGrid token actually provides. No OpenAPI schema or examples exist. The listing is effectively a stub with confirmed liveness.

Warnings

  • —No documentation on what the SendGrid token response contains or how to use it
  • —No OpenAPI or request/response schema available
  • —Exact functionality (token provisioning, session creation, etc.) is inferred from URL path only
  • —Other crawled pages (/api, /pricing, /README) returned only a 'Connect wallet' prompt with no useful content

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 22:06:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/t9rys2
SendGrid integration token via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart