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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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555 results- Ccitable.runAI & agents
The observed AI prompts a domain is already cited for, with the answer snippet and the cited URL.
Solanacitable.runfrom $0.00513 endpoints - CChangelog State APIOther services
Detected changelog update history for one tracked vendor.
SolanaBasechangelog-state-api.replit.appfrom $0.0184 endpoints - Bbotcheck.themonexus.comAI & agents
BotCheck — Per-request traffic-integrity classification. POST JSON {headers:{...}, signals:{...}} -> deterministic {verdict:human|agent|bot|unknown, confidence:0-100, signals:[{name,value,weight,reason}], classification_version:"1.0"}.
Solanabotcheck.themonexus.comfrom $0.0021 endpoint - Bblocksearch.devCrypto & DeFi
Get trending insights in the blockchain space.
Solanablocksearch.devfrom $0.015 endpoints - Bblockrun-sol-vbsbhh7lea-uc.a.run.appOther services
No description yet.
Solanablockrun-sol-vbsbhh7lea-uc.a.run.appfrom $0.0031 endpoint - Bblockrun-sol-vbsbhh7lea-an.a.run.appOther services
No description yet.
Solanablockrun-sol-vbsbhh7lea-an.a.run.appfrom $0.0031 endpoint - Bblockrun-sol-staging-vbsbhh7lea-uc.a.run.appOther services
No description yet.
Solanablockrun-sol-staging-vbsbhh7lea-uc.a.run.appfrom $0.0031 endpoint - BBentCrypto Token RiskCrypto & DeFi
BentCrypto Solana Token Security API - authority and Token-2022 control analysis for AI agents
Solanabentcrypto-x402-production.up.railway.appfrom $0.012 endpoints - BBatcave Agent ServicesAI & agents
Run supplied Python files in a disposable isolated environment and return execution evidence and requested artifacts. Use when you need to execute untrusted Python code, run tests, reproduce a failure, or collect stdout/stderr and generated artifacts without giving the code network, GPU, or host access.
SolanaBasebatcave-x402-gateway.darriel9.workers.devfrom $0.0032 endpoints - Bbasketprice.themonexus.comOther services
BasketPrice — SADC family-of-4 food basket: cheapest in-date catalogue price per staple slot for a city. Params: city, basket=family4.
Solanabasketprice.themonexus.comfrom $0.0013 endpoints - CcrawlSocial & people
Agent data APIs: web search, page crawl, company enrich, X/Twitter mentions — plus cheap LLM. GET any URL → HTTP 402 USDC Solana. Pay, retry PAYMENT-SIGNATURE, get JSON. search, crawl, enrich, twitter, inference. Models: openrouter/free $0.001, google/gemma-4-31b-it:free $0.001, google/gemma-4-26b-a4b-it:free $0.001, n
Solanaaws-bedrock.grok.mefrom $0.0013 endpoints
CriptoNousCrypto & DeFiNews/wire pulse for one symbol or meta ($0.04). Narrative context only NFA.
SolanaBaseBNB Chain+1app.criptonous.comfrom $0.0119 endpoints- Aapi.x402cloud.spaceOther services
No description yet.
Solanaapi.x402cloud.spacefrom $0.00024 endpoints
SyraCrypto & DeFiLists conferences, launches, listings, and macro events affecting crypto. Use when an agent schedules research around catalysts or filters noise by ticker. Input: optional ticker. Returns event[] with titles, dates, and metadata.
SolanaBasePolygon+6api.syraa.funfrom $0.000161 endpoints- Aapi.syntalic.comOther services
Analyst/market-level query - $0.02 per request
BaseSolanaapi.syntalic.comfrom $0.0123 endpoints - Aapi.solrouter.comOther services
No description yet.
Solanaapi.solrouter.comfrom $0.0053 endpoints
api.predge.ioSocial & peoplePREMIUM smart-money consensus. "Smart money" is EDGE-based, not the opaque scorer: a wallet qualifies when its luck-damped realized edge over the last 30d is positive — edge_lower_bound = Wilson-95%-lower-bound(live win rate) − avg entry price > 0, from RESOLVED outcomes (same machinery as the wallets leaderboard), with skin-in-the-game floors (>= 10 trades, >= $1,000 volume). For every active Pol
BaseSolanaalgorand+2api.predge.iofrom $0.00521 endpoints- Aapi.paysponge.comSearch & web
Service: Exa (https://api.paysponge.com/search)
SolanaBaseapi.paysponge.comfrom Free22 endpoints
MilypayCrypto & DeFiBSB lookup 012-002
Solanaapi.milypay.xyzfrom $0.0021 endpoint- MMantisMeshAI & agents
checkpoint.save: Save portable execution state for autonomous agents when a task may outlive the current process, model session, container, or machine. Durable checkpoints support cross-session recovery and cross-provider state portability; companion handoff and lock capabilities support delegation and coordination between autonomous agents.
Solanaapi.mantismesh.comfrom $0.011 endpoint - GGROUNDTRUTHCrypto & DeFi
GROUNDTRUTH creator counts: launches, rugged, died, active, survived, graduated, and the observed-only baseline the known_bad line is drawn from. Live fields from the mint feed every 5 s: last_mint_live, launched_live, bonded_live, mints_since_asof; ticker_asof = the newest mint seen. No mints_since_asof = not live.
Solanaapi.groundtruths.xyzfrom $0.012 endpoints - Xx402 PingOther services
Cheapest possible paid call for testing an x402 client end to end. Returns pong plus server time. $0.001.
BaseSolanaapi.gptshopltd.comfrom $0.0011 endpoint - Aapi.finnputerdex.comCrypto & DeFi
FINNPUTER deep token safety scan (clusters + forwarded supply)
Solanaapi.finnputerdex.comfrom $0.0052 endpoints - Aapi.drayn.onlineData & research
Check supplied OHLCV candles for missing intervals, duplicates, ordering, UTC alignment, OHLC relationships and negative volume. Returns FIT or NOT_FIT with defects and a dataset hash. Structural validation only: no data fetching, source authentication or trading advice. Completed checks cost 0.01 USDC even when NOT_FIT. Maximum 5000 rows/expected intervals and 1 MiB JSON; rows or CSV inside JSON.
Solanaapi.drayn.onlinefrom $0.013 endpoints
Deside AskCrypto & DeFiDeside directory question: one answered question about the AI agents in the directory
Solanaapi.deside.iofrom $0.011 endpoint- Aapi.crushrewards.devOther services
Analyst/market-level query - $0.02 per request
BaseSolanaapi.crushrewards.devfrom $0.00526 endpoints - Chit402Crypto & DeFi
Signed spend receipts for agent x402 payments — who paid which call, verifiable by a third party. Treasury desk and possession book for agent spend — export, policy, evidence. POST /v1/chat/completions is the x402 USDC door on Base and Solana. Returns signed receipt + public verify_url. Paying this host is real mainnet USDC.
Solanaapi.chit402.comfrom $0.0021 endpoint - Aapi.bentlawgic.comCrypto & DeFi
BentLawgic Solana token intelligence. Returns deterministic on-chain mint information including supply, decimals, token program, mint authority, and freeze authority.
Solanaapi.bentlawgic.comfrom $0.0021 endpoint - Aapi.bentcrypto.comCrypto & DeFi
BentCrypto Solana Token Security - pre-trade authority, Token-2022, and token-control analysis for autonomous agents.
SolanaBaseapi.bentcrypto.comfrom $0.014 endpoints
api.anchor-x402.comCrypto & DeFiCross-chain name resolver (POST wrapper, body: {name}) — $0.001 USDC
Solanaapi.anchor-x402.comfrom $0.00118 endpoints
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.