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Pricing State API – Devtools Set Change Feed
x402
Pricing State API – Devtools Set Change Feed is a paid API for AI agents from pricing-state-api.replit.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Returns a paginated, cursor-based feed of pricing changes across all devtools-category products, newest first, charged only when results exist.
Price / call$0.01
Success—
StatusUnknown
How this service works
$0.01 USDC required (x402 / Base) Paid 0.01 USDC, and only when there is something to deliver. Changes recorded across every member of a named set (inference or devtools) after your since cursor, newest first, each with the slug, detection time, source page and the same change object the per-slug endpoint returns. An empty window is answered free (charged false) and never reaches this paywall. Public list prices only; not negotiated rates. No API key needed. Pay with any x402-compatible wallet that holds USDC on Base. If your agent does not yet have a funded wallet, set one up via Coinbase Agentic Wallet or Base MCP — then standard x402 clients will pay and retry automatically.
Output
A paginated JSON array of pricing change records across all devtools-set products after the given cursor, each including slug, detection timestamp, source page URL, and the same structured change object as the per-slug endpoint. Includes a nextBefore opaque cursor for subsequent requests and a charged boolean (false when the result window is empty and no payment was taken).
Example use cases
Daily devtools price change digest
“Pull the latest pricing changes from the devtools set since yesterday at midnight UTC — up to 50 results — and summarize what products changed and how.”
Continuous polling agent checkpoint
“I need to keep my pricing database in sync. Fetch any devtools pricing changes since my last cursor 'abc123XYZ' and give me the next cursor so I can pick up from there next time.”
Competitive pricing audit for devtools
“Get me all the devtools pricing changes recorded since 2025-01-01T00:00:00Z, limit 100, so I can audit which tools raised or lowered their public list prices this year.”
Technical details
Endpoint
GEThttps://pricing-state-api.replit.app/api/sets/devtools/changes?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to monitor or batch-collect pricing changes across the entire devtools product category rather than a single slug. It is the right choice for change-polling agents, competitive intelligence pipelines, and pricing dashboards that need to process multiple devtools products at once. Prefer it over per-slug endpoints when you don't know which slugs changed and want a unified feed with cursor-based resumption.
Side effects
- Empty result window: returns HTTP 200 with charged=false and no payment deducted
- Payment failure: x402 wallet lacks sufficient USDC on Base, request blocked
- Invalid since timestamp format: rejected if not ISO 8601 with timezone
- Invalid before cursor: rejected if cursor string is malformed or expired
- Rate limits or server errors from the Replit-hosted API
- Limit parameter out of range (must be 1–100)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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