Slack integration key via x402 micropayment on Base for $0.02 per request
What it does
This endpoint at lowpaymentfee.com provides a Slack integration key accessible via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, infrastructure utilities, and integrations — all priced at $0.02 per request and settled in USDC on the Base network.
The specific endpoint `/api/v1/integrations/slack/key` is listed under "Premium API Access" and accepts POST requests. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment on Base. The x402 challenge confirms the endpoint is live, requesting a maximum of 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals) per call. No API keys, rate limits, or upfront commitments are required — you pay per request.
Documentation beyond the landing page is sparse. The platform's /api, /pricing, and /README pages all resolve to a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what the Slack key endpoint actually returns or what parameters it expects. The endpoint appears to generate or retrieve a Slack integration key, but the exact behavior, required POST body, and response format are unknown.
Capabilities
Use cases
- —Programmatically obtaining a Slack integration key without managing API key subscriptions
- —Agent-driven workflows that need Slack connectivity on demand
- —Pay-per-use Slack key provisioning for ephemeral or short-lived integrations
Fit
Best for
- —Agents or bots that need one-off Slack integration keys
- —Developers who want to avoid Slack API key management overhead
- —x402-native workflows on the Base network
Not for
- —Production Slack integrations requiring persistent, long-lived tokens with known scopes
- —Users who need detailed documentation or guaranteed SLAs before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/integrations/slack/key \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base), but there is no documentation for this specific endpoint — no request schema, no response schema, no explanation of what a 'Slack key' means in this context. The /api, /pricing, and /README pages are all blank wallet-connect prompts. Effectively a stub listing.
Warnings
- —No OpenAPI spec or request/response schema available for this endpoint
- —No documentation explaining what the Slack integration key endpoint returns or what POST body it expects
- —Platform docs pages (/api, /pricing, /README) all resolve to empty 'Connect wallet' pages
- —The exact nature and scope of the returned Slack key is unknown
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requesting 20,000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/integrations/slack/key
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/integrations/slack/key