Every agent-payable API.

Federal income tax on ordinary income for 2026: AGI from gross minus above-the-line adjustments, standard or itemized deduction, the 2026 brackets, and a flat nonrefundable credit amount. Distinct from /v1/paycheck (which nets FICA + state per pay period).

Federal tax cost of a Roth conversion in one year: the extra income tax from stacking the converted amount on top of your other taxable income, with the marginal rate before and after.

Fediverse posts: search any Mastodon instance or read its public timeline, with author, engagement and hashtags

Fee amount = notional × fee_rate for maker/taker style quotes. Call when pre-trade fee drag estimates on a sized order. Returns fee amount in quote units as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Subscribe for 30 days to the change feed behind /crypto/scan: one cursor over the upstream advice ledger, all coins at once. Returns a handle and a cursor; polling is then free and unlimited: /crypto/feed/since returns every published change since your cursor — new signals, classification flips, status changes (PUBLISHED/STALE/INVALIDATED), score and entry-zone changes. Be first to know when the market state flips; the full advice per signal stays a separate paid call.

Delivers your message (symbol request, bug report, or logic suggestion) to the operator's write-only inbox and returns a feedback_id confirming receipt.

Top-20 protocols by 24h fees and revenue (DeFiLlama): fees, revenue, 1d change, category, chains. Real-cashflow ranking, not TVL. No params.

Fees needed to offset IL at a price ratio. Call when checking if fee APR can cover expected IL. Returns fee_fraction_needed as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

FEMA NFIP flood insurance claims: date of loss, state, county, ZIP, flood zone, occupancy and amounts paid on building and contents. OData filter supported. Keyless.

Fetch a web page and return structured content: title, meta/OpenGraph, canonical, headings, links, readable text (boilerplate stripped). Add ?render=true for JavaScript-rendered pages ($0.03).

Fetch any URL through a real residential/mobile device (UpRock's network, 190+ countries) instead of a datacenter IP -- returns the page as an actual user in that location would see it, bypassing anti-bot blocking and geo-filtered content.

The /fetch endpoint allows you to fetch a single webpage from a given URL.

Fetch Docker Hub image metadata: pull count, star count, tags, architectures, last updated. Supports official and user images.

Fetch a URL and return content as base64. Useful for embedding images, PDFs in API calls. Returns base64, content type, data URI.

Fetch a URL and return context already fitted to your token budget, with token counts and an omission manifest.

Fetch a file from IPFS by CID via gateway

Fetch a live https URL and score whether the deploy is actually there. POST {"url":"https://your.site","min_score":80} ($0.02). Default x402-seller profile: HTTPS, HSTS, llms.txt, catalog, OpenAPI, MCP, health. Optional claims[] or profile:"web". Returns 0–100, evidence, do_this_first, ci_failed. Humans: GET /v1/tools/claim-check/report?host=your.site. Badge goes stale after 7 days.

Fetches a URL and returns the requested format(s): markdown, html, links, images, summary, json, branding, screenshot. | ERROR: Unable to calculate price.

Fetches a URL and returns the requested format(s): markdown, html, links, images, summary, json, branding, screenshot. | ERROR: Unable to calculate price.

Fetches paginated comments on a YouTube video. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated followers of a TikTok user. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated followers of a Twitter/X user. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated mentions of a Twitter/X user. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated posts from an Instagram user. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated quote tweets for a given tweet. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated reels from an Instagram user. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated replies to a given tweet. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated tweets from a Twitter/X user. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches paginated videos from a TikTok user. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches the TikTok trending feed. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches YouTube channel info and paginated videos. Pagination billing: call the first page normally and save billing.requestId from the Orthogonal /v1/run response. For later page, offset, or cursor calls on the same logical search, pass parentRequestId with unchanged non-pagination parameters. Valid continuation calls still get their own request IDs and quoted price, but are charged 0. Changing filters starts a new billable request.

Fetches a TikTok user profile by handle.

Fetches a Twitter/X user profile by handle.

Fetches an Instagram user profile by handle.

Fetches details for a specific YouTube video.

Fetches full details for a specific tweet by ID.

Fetches popular TikTok songs.

Fetches the transcript of a YouTube video.

Fetches trending TikTok hashtags.

Foreign-exchange rates for 30+ fiat currencies (ECB reference data). Query: base (3-letter code, default USD), symbols (optional comma list, e.g. EUR,GBP,JPY), date (optional YYYY-MM-DD for historical rates back to 1999). Returns {base, date, rates}. Use for currency conversion, international pricing, and FX monitoring.

🆕 The feasibility check before you ask a user for money: which fiat-in and cash-out rails Coinbase actually runs in a country, the currencies and min/max limits for each, and how many assets across which networks. Distinguishes a country with card rails from one where crypto can only be transferred in — a difference most integrations discover only after a user fails. 122 countries covered.

Token report — price + liquidity + full safety verdict for any ERC-20 in ONE call (DexScreener + GoPlus). One payment instead of chaining token_price + token_safety. Pay-per-call via x402.

Stablecoin intelligence — circulating supply, $1.00 peg deviation and per-chain breakdown (incl. Base) for USDC and other stablecoins (DefiLlama). Pay-per-call via x402.

USDC balance of any address on Base — the x402 settlement asset (atomic + USDC). Pay-per-call via x402.

ETH balance of any address on Base (wei + ETH). Pay-per-call via x402.

Address intelligence on Base — EOA/contract/ERC-20 + nonce + ETH/USDC balance + keyless GoPlus security verdict (phishing/sanctioned/mixer/…). The loop input for triaging a counterparty. Pay-per-call via x402.

Base gas price — current wei/gwei. Cheap read-only chain primitive. Pay-per-call via x402.

ERC-20 token metadata on Base — name, symbol, decimals, total supply. Pay-per-call via x402.

Token safety & rug check — on-chain honeypot/tax/owner-privilege/holder-concentration risk verdict for any EVM token (GoPlus + DexScreener). Pay-per-call via x402.

Base latest block number + timestamp — a chain-head freshness probe. Pay-per-call via x402.