| Geocoding & Reverse Geocode Geocoding and reverse geocoding. Converts an address or place name to latitude/longitude, or coordinates back to an address. | kadec0.xyz | - | $0.01 | listed |
| GridPulse US electricity grid — demand, generation mix (renewable/gas/nuclear), and stress signals across 7 regions | lonestaroracle.xyz | - | $0.03 | listed |
| Grounded Honey Recommendations API Grounded honey recommendations: send a flavor/use/occasion intent, receive ranked varieties chosen from Melvea's proprietary flavor, terroir, and scoring corpus — each with a grounded reason. Recommends on taste and use, not health. | melvea.com | - | $0.10 | listed |
| Grouped Daily API End-of-day OHLCV bars for every US-listed ticker on a single date; one call returns the entire market. Pass `?date=YYYY-MM-DD` (required). From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402. | x402stock.xyz | - | $0.02 | listed |
| Hacker News Stories & Search Hacker News feed. Top, new, and best front-page stories plus full-text story search — titles, scores, comment counts, and author for tech and startup news. | kadec0.xyz | - | $0.01 | listed |
| Images to PDF Combine PNG/JPEG images into a single PDF, one image per page. Body: {"urls":["https://…/1.png","https://…/2.jpg"]}. Returns the PDF as base64. | agent402.tools | - | $0.004 | listed |
| JSON Validate, Repair, Convert, Every AI agent and developer runs into broken or confusing JSON constantly. This tool handles all the most common JSON headaches in one place: check if JSON is valid (with exact error location), fix near-JSON that has typos or formatting mistakes, pretty-print or minify, pull out specific values using a path expression, compare two JSON documents and see exactly what changed, convert to and from YAML or CSV, produce a byte-stable canonical form for hashing or signing, validate against a schema, and get size and structure statistics. Same input always gives the same output — fully predictable, no side effects. | underscoredone.com | - | $0.01 | listed |
| Jurisdictions API Returns activity rollups for every jurisdiction, ranked by total events — use it to spot which states are seeing the most WARN filing activity | forgemesh.io | - | $0.02 | listed |
| Kaspa Blockdag Topology Snapshot API Kaspa BlockDAG topology snapshot: tips, sink, virtual chain, pruning point, blue scores. For DAG-state monitoring, side-branch detection, sync verification. | carbon-cashmere.de | - | $0.02 | listed |
| Kaspa Mempool Transaction Count Over Time API Kaspa mempool transaction count over time. AI agent API for mempool-state regime detection. Informational research data — not investment advice. | carbon-cashmere.de | - | $0.02 | listed |
| LION Verified Company Company research for AI agents $0.03: web + firmographics + domain trust in one keyless call. Undercuts $0.10–$0.15 org-enrich rivals. Company intel, vendor research, firmographics, domain enrich. Ed25519-attested. Base USDC x402. ?q=stripe.com | lionx402.com | - | $0.03 | listed |
| Latest Crypto News Articles For A Coin ($0.1) API Latest crypto news articles for a coin ($0.1). Returns up to 10 recent news items with title, press, published date, and URL. | deepsearch.com | - | $0.05 | listed |
| Liquidations Full liquidation report — all assets, long/short breakdown, hot zones | lonestaroracle.xyz | - | $0.10 | listed |
| Lite API Return the Schema.org structured data already published on a public web page. Navigation-only results are marked low information so agents can choose Full extraction. $0.005 USDC per successful request on Base. Call /check before paying. Payment authorization settles only after a successful response. | jsonrecon.com | - | $0.005 | listed |
| LoneStarOracle ContractCheck Smart contract verification and security analysis on Ethereum Base BSC Arbitrum Polygon | lonestaroracle.xyz | - | $0.05 | listed |
| LoneStarOracle OptionsFlow Options flow intelligence — unusual activity put/call ratios large block trades | lonestaroracle.xyz | - | $0.05 | listed |
| Maximum Safe Ltv For Collateralized Agent Loans API Maximum-safe LTV for collateralized agent loans. Computed from (cv + λ·j²)-derived variance over loan horizon + 6-mode regime cap. Lender-specifiable max_default_prob. Returns binding constraint (math vs regime_cap) so agents can see WHY the cap is what it is. Same calibrator as Agent-SOFR rate endpoint. | regimeshift.xyz | - | $0.001 | listed |
| Mempool Pressure API Bitcoin mempool pressure classification (low/medium/high/extreme) + fee buckets (0-1, 1-2, 2-5, 5-10, 10-20, 20-50, 50-100, 100-200, 200+ sat/vB) + RBF count + CPFP candidate count. Updated every 5 min. | carbon-cashmere.de | - | $0.02 | listed |
| Money Supply API US M2 money stock, monthly, in billions of dollars (seasonally adjusted), with the latest value, prior month, month-over-month and year-over-year change, and recent history. No ticker needed. A liquidity gauge watched for inflation and risk-asset context. Sourced from the St. Louis Fed (FRED). From x402stock, a pay-per-call market & economic data API. Pay per request in USDC via x402, no API key. | x402stock.xyz | - | $0.01 | listed |
| Munition Airport Search API Munition Airport Search: x402-paid airport reference data search for AI agents. Pay 0.001 USDC to search airports by IATA code, city, airport name, or country and receive normalized IATA airport records suitable for travel planning. | munition.io | - | $0.001 | listed |
| Munition Flight Search API Munition Flight Search: x402-paid live flight offer search for AI agents. Pay 0.05 USDC to search Duffel flight offers and receive compact normalized itineraries, prices, carriers, and metadata suitable for replay and downstream planning. | munition.io | - | $0.05 | listed |
| News API Curated stock-market news with ticker tags, source, publisher, image, and timestamps. Pass `?ticker=AAPL` to filter. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402. | x402stock.xyz | - | $0.02 | listed |
| NodeFlare Ethereum RPC (chain 1): JSON-RPC over HTTPS on NodeFlare's own bare-metal nodes. Pay per request in USDC, no account or API key - built for AI agents. All methods including eth_getLogs, eth_call, trace, and debug (archive) - good for indexing, event queries, and simulation. Simple calls $0.001; heavy calls priced by compute units. | nodeflare.app | - | $0.001 | listed |
| NodeFlare BOB RPC (chain 60808): JSON-RPC over HTTPS on NodeFlare's own bare-metal nodes. Pay per request in USDC, no account or API key - built for AI agents. All methods including eth_getLogs, eth_call, trace, and debug (archive) - good for indexing, event queries, and simulation. Simple calls $0.001; heavy calls priced by compute units. One of the first independent x402 RPC providers for this chain. | nodeflare.app | - | $0.001 | listed |
| Numerical Computing (scipy) API Numerical computing (SciPy): root-finding, optimization, numerical integration (quadrature), eigenvalues/vectors, and linear solves — returned with residuals and condition numbers. Paid in USDC on Base or Solana. | surewhynot.app | - | $0.003 | listed |
| Ordinals Flow API Hourly Bitcoin Ordinals inscriptions + OP_RETURN byte volume. Inscriptions detected via witness-envelope magic bytes (cord). Window up to 7d. | carbon-cashmere.de | - | $0.02 | listed |
| Physical Chemistry (cantera + Coolprop) API Physical chemistry (Cantera + CoolProp): chemical equilibrium, adiabatic flame temperature, ignition delay, reactor simulation, flame speed, and thermo/transport/fluid properties. Bundled mechanisms (gri30, h2o2, air). Paid in USDC on Base or Solana. | surewhynot.app | - | $0.005 | listed |
| Polymarket Reward Plans API For Agents API Polymarket reward plans API for agents. Discovers and ranks sponsor rewards quote strategies for a caller-provided budget. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Profile API Single buyer wallet's 8-label classification with confidence, all services used, and transaction patterns. | printmoneylab.com | - | $0.005 | listed |
| Quality Volume API Pump.fun and Pump Fun Solana meme coin quality-volume API for agents. Ranks high-velocity tokens with liquidity, short-window volume, and meme scores. | seerium.xyz | - | $0.001 | listed |
| Quartermaster AI Deep Read AI Deep Read: fetches up to five pages, reads them, and synthesizes a sourced answer to your question via Workers AI. Input is capped for predictable cost. Pass urls=<comma-separated> and question=<your question>. | surewhynot.app | - | $0.05 | listed |
| Quartermaster Random Numbers Cryptographically-secure random integers in a chosen range (CSPRNG, rejection-sampled to avoid modulo bias) — real entropy an LLM cannot produce itself. | surewhynot.app | - | $0.001 | listed |
| Quartermaster Token Prices USD price for major tokens by symbol or any Base ERC-20 by contract address, with source failover. | surewhynot.app | - | $0.001 | listed |
| Quartermaster URL Unshortener Expand a shortened or redirecting URL: follows the redirect chain server-side and returns every hop plus the final destination, re-validating each hop against SSRF. | surewhynot.app | - | $0.002 | listed |
| Quartermaster x402 Audit Full x402 endpoint audit: verifies the 402 challenge, payment fields, Bazaar discovery metadata, and the origin's discovery surfaces (llms.txt, openapi.json, .well-known/x402, discovery/resources), returning a 0-100 score, pass/warn/fail checks with evidence, and recommended fixes. | surewhynot.app | - | $0.01 | listed |
| Query API Returns a constitution-safe short-form answer to an agent question with source attribution. Use for lightweight Q&A before purchasing deeper research. | agentic-swarm-marketplace.com | - | $0.012 | listed |
| Read Uniswap V3 pool state Read on-chain state of a Uniswap V3 pool: token0/token1 addresses + decimals, fee tier, current sqrtPriceX96, tick, in-range liquidity, and the decoded human-readable spot price (token1 per token0). One $0.002 call replaces ~6 RPC roundtrips on the caller's side. | agent402.tools | - | $0.002 | listed |
| Read-only JSON-RPC passthrough Escape hatch for power users: forward an arbitrary read-only JSON-RPC method to the chain. Method must be in our read-only whitelist (eth_call, eth_getLogs, eth_getBlockByNumber, eth_getTransactionReceipt, eth_chainId, eth_blockNumber, etc.). Mutating methods (eth_sendTransaction, eth_sendRawTransaction) are rejected - sign and broadcast through your own provider. | agent402.tools | - | $0.002 | listed |
| Reloadpi API Reloadpi — Browse eSIM data plans for international travel across 190+ countries | reloadpi.com | - | $0.002 | listed |
| Research Brief API Produces a multi-section research brief with executive summary, findings, and citations for agent due-diligence pipelines. | agentic-swarm-marketplace.com | - | $0.06 | listed |
| RugSense Scored intelligence on freshly-launched Base tokens: safety + momentum → composite score and an AVOID/WATCH/HOT decision per launch. One call returns a ranked list. | rugsense.xyz | - | $0.03 | listed |
| Search API Targeted node lookup by asset address or protocol/asset name — the sole discovery path | yo.xyz | - | $0.001 | listed |
| Settlement Assurance API Settlement assurance for a completed x402 payment on Base or Solana: confirm the transaction succeeded (0x hash or base58 signature), match the USDC transfer to an expected wallet and amount, format a receipt, and optionally audit the issuing endpoint - as one 0-100 scored report with a verdict. | surewhynot.app | - | $0.03 | listed |
| Signals Top Signals Top — an agent-callable signals top service, payable over x402 (USDC on Base). Provided via signals.nsgoods.org. Priced around 0.1 USD per call. | nsgoods.org | - | $0.10 | listed |
| Social Volume API Social volume - Twitter/Farcaster mention count for a token | agenticfi.wtf | - | $0.001 | listed |
| StableFinance SEC Form 4 insider transactions. | stablefinance.dev | - | $0.02 | listed |
| StablePulse Top stables ranked by mcap with peg deviation (now/24h/7d) + stability score + risk | lonestaroracle.xyz | - | $0.05 | listed |
| StableSocial Scrape Creators · Google — Company Ads | stablesocial.dev | - | $0.06 | listed |
| Stablecoin Stats API Stablecoin market caps, peg deviations, circulating supply by chain | agenticfi.wtf | - | $0.001 | listed |