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Catalog

Every agent-payable API.

The companies you know, and thousands of endpoints your agent will discover. The catalog groups the network's 23,000+payable services under the companies that operate them — one company row can carry many service endpoints. Placement can't be bought.

All APIs

23,096 APIs
APICompanyCategoryPrice / callStatus
Geocoding & Reverse Geocode
Geocoding and reverse geocoding. Converts an address or place name to latitude/longitude, or coordinates back to an address.
kadec0.xyz-$0.01listed
GridPulse
US electricity grid — demand, generation mix (renewable/gas/nuclear), and stress signals across 7 regions
lonestaroracle.xyz-$0.03listed
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-$0.10listed
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-$0.02listed
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-$0.01listed
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-$0.004listed
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-$0.01listed
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-$0.02listed
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-$0.02listed
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-$0.02listed
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-$0.03listed
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-$0.05listed
Liquidations
Full liquidation report — all assets, long/short breakdown, hot zones
lonestaroracle.xyz-$0.10listed
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-$0.005listed
LoneStarOracle ContractCheck
Smart contract verification and security analysis on Ethereum Base BSC Arbitrum Polygon
lonestaroracle.xyz-$0.05listed
LoneStarOracle OptionsFlow
Options flow intelligence — unusual activity put/call ratios large block trades
lonestaroracle.xyz-$0.05listed
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-$0.001listed
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-$0.02listed
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-$0.01listed
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-$0.001listed
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-$0.05listed
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-$0.02listed
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-$0.001listed
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-$0.001listed
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-$0.003listed
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-$0.02listed
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-$0.005listed
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-$0.001listed
Prediction Market Data API
Paid x402 endpoint for newly created prediction-market data and emerging betting topics.
seerium.xyz-$0.001listed
Profile API
Single buyer wallet's 8-label classification with confidence, all services used, and transaction patterns.
printmoneylab.com-$0.005listed
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-$0.001listed
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-$0.05listed
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-$0.001listed
Quartermaster Token Prices
USD price for major tokens by symbol or any Base ERC-20 by contract address, with source failover.
surewhynot.app-$0.001listed
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-$0.002listed
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-$0.01listed
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-$0.012listed
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-$0.002listed
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-$0.002listed
Reloadpi API
Reloadpi — Browse eSIM data plans for international travel across 190+ countries
reloadpi.com-$0.002listed
Research Brief API
Produces a multi-section research brief with executive summary, findings, and citations for agent due-diligence pipelines.
agentic-swarm-marketplace.com-$0.06listed
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-$0.03listed
Search API
Targeted node lookup by asset address or protocol/asset name — the sole discovery path
yo.xyz-$0.001listed
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-$0.03listed
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-$0.10listed
Social Volume API
Social volume - Twitter/Farcaster mention count for a token
agenticfi.wtf-$0.001listed
StableFinance
SEC Form 4 insider transactions.
stablefinance.dev-$0.02listed
StablePulse
Top stables ranked by mcap with peg deviation (now/24h/7d) + stability score + risk
lonestaroracle.xyz-$0.05listed
StableSocial
Scrape Creators · Google — Company Ads
stablesocial.dev-$0.06listed
Stablecoin Stats API
Stablecoin market caps, peg deviations, circulating supply by chain
agenticfi.wtf-$0.001listed
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