Every agent-payable API.

Call when an agent needs stylesheet hrefs via link[rel='stylesheet'] from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-link-stylesheet first.

Call when an agent needs main text via main from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-main first.

Call when an agent needs web manifest hrefs via link[rel='manifest'] from a public page or HTML (SSRF-safe). Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/css-manifest first.

Call when an agent needs meta charset values via meta[charset] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-meta-charset first.

Call when an agent needs meta description content via meta[name='description'] from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/css-meta-description first.

Call when an agent needs og:image content via meta[property='og:image'] from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/css-meta-og-image first.

Call when an agent needs og:title content via meta[property='og:title'] from a public page or HTML (SSRF-safe). Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/css-meta-og-title first.

Call when an agent needs twitter:card content via meta[name='twitter:card'] from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/css-meta-twitter first.

Call when an agent needs nav anchor hrefs via nav a[href] from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/css-nav-href first.

Call when an agent needs nofollow anchor hrefs via a[rel~='nofollow'] from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/css-nofollow first.

Call when an agent needs option text via option from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/css-option first.

Call when an agent needs paragraph text via p from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/css-p first.

Call when an agent needs pre text via pre from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-pre first.

Call when an agent needs preload hrefs via link[rel='preload'] from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/css-preload first.

Call when an agent needs inline quote text via q from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-q first.

Call when an agent needs role values via [role] from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/css-role first.

Call when an agent needs RSS autodiscovery hrefs via link[type='application/rss+xml'] from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-rss first.

Call when an agent needs script sources via script[src] from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/css-script-src first.

Call when an agent needs script type values via script[type] from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/css-script-type first.

Call when an agent needs text and attributes extracted with CSS selectors from a public page or HTML (SSRF-safe, node cap). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-select first.

Call when an agent needs select names via select[name] from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-select-name first.

Call when an agent needs media source src values via source[src] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-source-src first.

Call when an agent needs media source srcset values via source[srcset] from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-source-srcset first.

Call when an agent needs summary text via summary from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/css-summary first.

Call when an agent needs table cell text via td from a public page or HTML (SSRF-safe). Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/css-td first.

Call when an agent needs textarea names via textarea[name] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-textarea-name first.

Call when an agent needs table header text via th from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/css-th first.

Call when an agent needs time datetime values via time[datetime] from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/css-time-datetime first.

Call when an agent needs document title text via title from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/css-title first.

Call when an agent needs text track sources via track[src] from a public page or HTML (SSRF-safe). Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/css-track-src first.

Call when an agent needs video posters via video[poster] from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/css-video-poster first.

Call when an agent needs video sources via video[src] from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/css-video-src first.

Create a video project — the container for a composition (the editable timeline), its media, brand kit, and renders. Every other authoring call (import or generate media, apply composition ops, compose, render, export) takes this project's id. Set the output format here (aspectRatio, fps, resolution).

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Curated x402 ecosystem directory — 277 human-reviewed projects: SDKs, production APIs, facilitators, agent frameworks, tools. Spam-filtered alternative to Bazaar (13K entries, 85% spam). Search by keyword or browse by category. Accepts USDC payments on Base and Solana

Convert an amount between currencies and get the exchange rate. Converts between 30+ currencies (USD, EUR, GBP, JPY and more) using daily European Central Bank reference rates with cross-rate calculation, returning the converted amount, the rate and the rate date. Fast currency converter and FX rate lookup for pricing, invoicing and reporting (informational use).

Currency rate conversion

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Latest supply ledger: cumulative minted and burned totals, circulating supply, and max supply. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

The committed long-horizon cycle regime (14-basket framework) with rationale.

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Latest expansion and contraction vault WETH balances, plus protocol-owned liquidity once observed on-chain. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Current Dutch-auction quotes for the daily STANDARD license auction and the ETH charter auction: price now, floor, last sale, and whether a computed price is available. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Current exit-pressure gauge across the reserve. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. A snapshot of reserve backing: vault ETH balances, other reserve-asset holdings, and ETH backing per circulating STANDARD token. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.