DELTA Witness Capture
Timestamped page-state proof for a public web page. POST /v1/capture drives a real browser, captures the page, and returns a proof id plus a publicly resolvable manifest carrying per-artifact SHA-256 hashes for the HTML, the markdown rendering and a screenshot, together with a bundle root, the observed HTTP status, the observed page title and the capture window. $1.00 USDC per call on Base, no API key. Scope: attestation is hash_only. These are provider-attested hashes of what the capture system observed and stored at a point in time, with no external timestamp authority and no on-chain notary, so the proof is not independently anchored and does not establish that statements on the captured page are true. Verified by a paid call whose input was https://payapi.market.
1 route settlement-verified · $1 USDC/request · 1 endpoint · Verification · base network · x402 protocol
Verified routes
POST /v1/capture· $0.03 · 2026-09-09 · receipt
Other routes are unverified.
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpListing facts
- Provider
- Ruphus Sten Studio
- Hosted at
delta-witness-api.ruphussten.workers.dev- Category
- Verification
- Price
- $1 USDC per request
- Endpoints
- 1
- Payment networks
- Base
- Settlement-verified
- 1 route, last checked 2026-09-09
- Listed on PayAPI Market
- 2026-09-09
Try DELTA Witness Capture
Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.
curl -i -X POST "https://delta-witness-api.ruphussten.workers.dev/v1/capture"About this API
DELTA Witness Capture is listed in the Verification category with pricing at $1 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-09-09. View receipt on Basescan.
Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.
This API exposes 1 endpoint.
Questions about this API
What does DELTA Witness Capture do?
Timestamped page-state proof for a public web page. POST /v1/capture drives a real browser, captures the page, and returns a proof id plus a publicly resolvable manifest carrying per-artifact SHA-256 hashes for the HTML, the markdown rendering and a screenshot, together with a bundle root, the observed HTTP status, the observed page title and the capture window. $1.00 USDC per call on Base, no API key. Scope: attestation is hash_only. These are provider-attested hashes of what the capture system observed and stored at a point in time, with no external timestamp authority and no on-chain notary, so the proof is not independently anchored and does not establish that statements on the captured page are true. Verified by a paid call whose input was https://payapi.market. It is provided by Ruphus Sten Studio.
How much does DELTA Witness Capture cost?
DELTA Witness Capture is priced at $1 USDC per request, paid per call with no subscription. PayAPI Market paid 0.03 USDC for one call to /v1/capture when it verified the listing. The exact amount for each call is in the HTTP 402 response before any money moves.
Do I need an API key or account to use DELTA Witness Capture?
No. DELTA Witness Capture uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.
Has DELTA Witness Capture been verified?
Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-09-09.
How does an AI agent find DELTA Witness Capture?
Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.
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