Every agent-payable API.

0.1 USDC on base-sepolia

0.1 USDC on base-sepolia

0.1 USDC on base-sepolia

0.25 USDC on base-sepolia

Cid Bafybeiczl2fdbqutdbmnnm4bcaufqbrhfdrrnybuahr5ziisi5skmo5rfe — an agent-callable cid bafybeiczl2fdbqutdbmnnm4bcaufqbrhfdrrnybuahr5ziisi5skmo5rfe service, payable over x402 (USDC on Base). Provided via gateway.grapevine.fyi. Priced around 0.5 USD per call.

Cid Bafybeif5ck7iuvkdq5n2a2hxxvbwaoade3p43pbyp2jhb355bg6yl7y3fa — an agent-callable cid bafybeif5ck7iuvkdq5n2a2hxxvbwaoade3p43pbyp2jhb355bg6yl7y3fa service, payable over x402 (USDC on Base). Provided via gateway.grapevine.fyi. Priced around 0.5 USD per call.

A clean, blue-themed block template designed for professional use. It offers a flexible foundation for adding content, text, or data, making it ideal for marketing materials, presentations, or website sections that require a simple yet polished visual element. | Powered by Questflow

A custom Claude-generated joke, delivered fresh.

A simple UI component that renders a red block containing the text 'This is a red block.' It serves as a basic visual element without any data processing, marketing, or investment context. | Powered by Questflow

AI-relevant APIs from the APIs.guru directory of 2400+ OpenAPI specs, filtered via curated keyword matching. Per-entry first_seen_at against TensorFeed snapshot history so an agent can answer "what new AI APIs appeared in the last 7 days": a diff APIs.guru itself cannot provide. CC-BY-SA 4.0; source links preserved.

AI-package release velocity. Per-package releases_24h / releases_7d / releases_30d, latest bump classification (major/minor/patch/prerelease, pre-1.0 minor counts as major per semver), is_breaking_recent flag (major bump within 30 days). Notable movers: recent_major_bumps, most_releases_7d, fastest_cadence_30d. Filter by ecosystem (PyPI/npm), category (llm-sdk, agent-framework, etc), or package substring. The "what AI deps just changed and is it breaking" call.

AI-stack CVE intelligence. Filters fresh security disclosures to vendors and products in the AI inference, agent framework, training, vector DB, model gateway, and MCP tool layers. Each paper carries a tf_ai_category tag and a severity_rank, sorted with exploited-in-wild and critical-severity first. 99.8% of underlying data is from GitHub Security Advisories (CC BY 4.0).

AI daily market briefing — stocks, crypto, and DeFi overview with outlook. $0.05 USDC per call.

AI-powered GIF search with semantic ranking from Giphy, Tenor, and Klipy

Itemized fee breakdown and net P&L for any arbitrage trade — fees, slippage and gas. For arbitrage and trading agents.

Cross-exchange spread tick — ONE $0.02 call returns the live executable spread for a pair across Binance, Coinbase, Kraken, Bybit: best bid venue, best ask venue, spread in bps, and a deterministic TRADE / THIN / NONE verdict. Built for arbitrage monitoring loops; escalate to /api/crypto ($0.07) for the full CEX arbitrage read with fees and transfer paths. 30s freshness, no LLM in the path.

Cross-provider arbitrage analytics for hosted inference. Per-model: cheapest_paid, most_expensive_paid, spread_usd, savings_pct, median_paid_blended, fastest_tps, cheapest_with_tps, free_tier_offers. Plus provider_rollup (cheapest_count, top_tps_count, value_score 0-100) and top_arbitrage models sorted by savings_pct desc. Pairs with the free /api/inference-providers matrix. The "where to migrate workloads" call.

Author — an agent-callable author service, payable over x402 (USDC on Base). Provided via citepulse.theaslangroupllc.com. Priced around 0.1 USD per call.

Pre-purchase inspection checklist / used car inspection / what to check before buying. Returns a model-specific PPI checklist with known issues, red flags, and mechanic instructions to check before buying a used car. For car-buyer and auto agents.

Repair malformed JSON and optionally validate it against JSON Schema.

BAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment surface.

Base x402 spending report

Base64 encode or decode. Query: ?text=YOUR_INPUT&mode=encode|decode (default: encode). URL-safe variant: ?urlsafe=true.

Full company dossier for a Brazilian CNPJ: legal name, registration status, shareholders/partners (QSA), main and secondary business activities (CNAE), share capital, address — plus an automatic sanctions screen against the CEIS debarment list. Built for KYB / due-diligence. Official Receita Federal and CGU data.

Brazil CDI interbank rate, latest daily values. Central Bank of Brazil.

Brazil SELIC policy interest rate, current target and recent history. Central Bank of Brazil.

Focus report: median market forecasts from ~100 institutions for Brazil IPCA, SELIC, GDP and USD/BRL.

Pre-inspection checklist for contractor and homeowner agents. Returns what the inspector checks and how to pass first time for any project type.

Business days calculator / working days between dates / weekdays counter / exclude weekends / workday count / business day arithmetic. Count business days (Mon-Fri) between two dates, separating weekend days. No holiday data, just weekend exclusion.

Per-asset predictor explorer — top 5 atomic signals and top 5 metrics ranked by absolute IC times hit rate. A/B grades only, anti-predictive filtered, family-deduped. Signals carry walk-forward robustness; metrics carry TS-vs-CS divergence.

One-shot agent grounding snapshot in 200-400ms — factor breadth, top/bottom composite assets with regime, recent signal aggregation, platform counts, and pipeline status. Call before any market reasoning task.

Calendar Fomc — an agent-callable calendar fomc service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.05 USD per call.

Calendar Today — an agent-callable calendar today service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.05 USD per call.

Aggregate congressional buy/sell signal (last 30d)

Country, city, subdivisions, network (ASN), and approximate location for an IPv4 or IPv6 address.

Look up a country by ISO-2 code. Returns ISO codes, official name, capital, region, subregion, and calling codes.

Dated public-holiday list for a country and year.

Verify that an AI-agent payment produced the expected service response and audit evidence.

Check the exact ERC20 allowance an owner granted a spender and flag unlimited approvals that let a contract drain funds - a pre-transaction safety check agents need that LLMs cannot perform. allowance risk, approval risk, unlimited approval, spender risk, revoke check, token approval safety

Check whether a wallet holds or has claimed a specific airdrop/token contract balance on EVM chains, with symbol and formatted amount. airdrop check, claim eligibility, token balance check, airdrop claimed, wallet holdings

Archive search for genealogy and research agents. Full-text search across global digitized newspaper archives.

Historical event research for research and historian agents. Returns how newspapers covered wars, disasters, social movements, and world events as primary sources.

Cid Bafybeibpxcpq74uhen4tkeu4jw4bwimqsnpvjidogea4yuvelvhlfbkmyu — an agent-callable cid bafybeibpxcpq74uhen4tkeu4jw4bwimqsnpvjidogea4yuvelvhlfbkmyu service, payable over x402 (USDC on Base). Provided via x402hackathon.mypinata.cloud. Priced around 1 USD per call.

Top 100 recent AI papers ranked by the share of their total citations earned in the most recent calendar year. Papers published in the last 2 years with 3+ citations. Surfaces papers that are still gaining traction now. OpenAlex CC0.

One permanent square on twentyone-million, $1 USDC on Base (one per wallet). Want it? Retry this request with a signed payment and the square mints in the response. Pass ?handle= and ?message=. Live: 5 of 21,000 squares claimed, 20,995 open. A novelty collectible — not a token, not an investment.

Clarity Watch — an agent-callable clarity watch service, payable over x402 (USDC on Base). Provided via onchainpulse.theaslangroupllc.com. Priced around 0.1 USD per call.

Classify — an agent-callable classify service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.005 USD per call.

Dental cost intelligence for healthcare and consumer-health agents. Returns FairHealth benchmarks, discount-plan options, and CDT-code pricing for any dental procedure.

Medical bill negotiation guide for healthcare and patient-advocate agents. Returns negotiation scripts, the Medicare benchmark to anchor against, and charity-care options to cut a bill.

Care-site alternatives for healthcare and patient-advocate agents. Compares ASCs, imaging centers, FQHCs, and urgent care against the hospital for the same procedure, with the cost delta.