| Bittensor Defi Overview API Bittensor DeFi overview: TVL trend, top protocols, stablecoins, DEX volume, fees — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.01 | listed |
| Bl Parse API Separates common bill-of-lading and air-waybill reference components. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. | halowerk.com | - | $0.004 | listed |
| Black Box Check API Black-box check: does the x402 endpoint verify payment (reject forged txHash/signature/replay) before delivering? Buyer-side trust check before you pay. Returns SAFE/RISK/NOT_X402. | minia2a.uk | - | $0.01 | listed |
| Black Box Check API Black-box check: does the x402 endpoint verify payment (reject forged txHash/signature/replay) before delivering? Buyer-side trust check before you pay. Returns SAFE/RISK/NOT_X402. | minia2a.uk | - | $0.05 | listed |
| Black Scholes API Black-Scholes option price and Greeks (delta, gamma, vega, theta) from JSON keys spot, strike, tau (years; 3-month = 0.25), sigma (annualized volatility), and is_call (boolean). Pure closed-form calculation, no market data looked up or stored. vega is ∂price/∂sigma per 1.0 volatility (not per 1%). | edifiedlab.com | - | $11,000.00 | listed |
| Black-Scholes option price Price a European option (call or put) with the Black-Scholes-Merton model, plus the greeks (delta, gamma, vega, theta, rho). Continuous dividend yield supported. Greeks are per unit: theta is per year, vega per 1.00 change in volatility, rho per 1.00 change in rate. Deterministic - matches standard references to the cent. | agent402.tools | - | $0.002 | listed |
| Blake2b 512 Digest Of Text Or Raw Bytes API BLAKE2b-512 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.001 | listed |
| Blake2s 256 Digest Of Text Or Raw Bytes API BLAKE2s-256 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.001 | listed |
| Blind Spot / Anomaly Insight API Blind-spot / anomaly insight: which boards & setups the system keeps missing. Query: ?days=7 | stockwaves.net | - | $0.05 | listed |
| Blindoracle By Craig M API BlindOracle by Craig M. Brown (craigmbrown.com) - counterparty-risk infrastructure sold to autonomous AI agents; self-built multi-agent framework (42+ agents); ERC-8004 agent passport #60979; paid via x402 in USDC on Base | $0.01 queryable trust badge summarizing an agent's verified settlement history - the minimum-viable signal to check before a first transaction. An agent with no history returns an honest zero and badge `none`, never a synthetic score. | craigmbrown.com | - | $0.01 | listed |
| Block API Get the latest Base block with its age in seconds, base fee and gas used. The latest Base block: number, hash, timestamp, age in seconds (so you know the node is not lagging), base fee, gas used. Public RPC, no key. Query: none. | x-402.online | - | $0.005 | listed |
| Block API Latest known block (number, timestamp, hash) of an EVM blockchain, read live via a public RPC endpoint (viem) — no API key, no aggregator. Parameter: ?chain=<base|ethereum>. | onrender.com | - | $0.005 | listed |
| Block Hash At A Given Bitcoin Height API Block hash at a given Bitcoin height — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.003 | listed |
| Block Inspector: node-operated on-chain service Executed deterministically by the AmanChain node against live consensus state (real blocks, pools, balances) — paid per call via x402, settled in USDC o Block Inspector: node-operated on-chain service Executed deterministically by the AmanChain node against live consensus state (real blocks, pools, balances) — paid per call via x402, settled in USDC on Base. Input: JSON body {"serviceId":"aman-block-inspect","request":"<input>"}. No account, no API key. | space-z.ai | - | $0.031104 | listed |
| Block Inspector: node-operated on-chain service Executed deterministically by the AmanChain node against live consensus state (real blocks, pools, balances) — paid per call via x402, settled in USDC o Block Inspector: node-operated on-chain service Executed deterministically by the AmanChain node against live consensus state (real blocks, pools, balances) — paid per call via x402, settled in USDC on Base. Input: JSON body {"serviceId":"aman-block-inspect","request":"<input>"}. No account, no API key. | workers.dev | - | $0.031104 | listed |
| Block header by block hash Block header by block hash — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.003 | listed |
| Block receipts (one block, Every transaction receipt in one block, fetched as a single upstream read and summarised: tx count, succeeded vs failed, total gas used, total fees, log count, contract creations, tx-type mix - plus compact per-transaction rows (hash, from, to, status, gas used, effective gas price, fee, log count) capped at 300. Block analytics, failed-tx hunting, or 'who paid what in block N' without N separate receipt calls. | agent402.tools | - | $0.005 | listed |
| BlockRun.AI Get current or historical price for a specific token | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI Get current or historical price for a specific token | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI Get historical cumulative volume data for a market | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI AI image editing API - edit images with USDC on Base | blockrun.ai | - | $0.021 | listed |
| BlockRun.AI Initiate an AI-powered outbound phone call via Bland.ai. | blockrun.ai | - | $0.541 | listed |
| BlockRun.AI Token price lookup. Pass coin identifiers as `/v1/defillama/prices/{coins}` (e.g. `coingecko:bitcoin`, `ethereum:0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`). Supports comma-separated lists. | blockrun.ai | - | $0.002 | listed |
| BlockRun.AI List UMA oracle questions filtered by state (proposed, disputed, resolved, …) | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI AI text-to-speech (ElevenLabs) — pay per call with USDC on Base | blockrun.ai | - | $0.053501 | listed |
| BlockRun.AI Anthropic-compatible Messages API — pay per token with USDC on Base | blockrun.ai | - | $0.011 | listed |
| BlockRun.AI Detailed TVL + breakdown for a single protocol. Pass slug as `/v1/defillama/protocol/{slug}` (e.g. `aave`, `uniswap`). | blockrun.ai | - | $0.006 | listed |
| BlockRun.AI Get historical cumulative volume data for a market | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI Batch retrieve wallet profiles for multiple addresses | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI Get OHLCV candlestick data for a Binance trading pair | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI AI video generation API - pay per second with USDC on Base | blockrun.ai | - | $0.402 | listed |
| BlockRun.AI Grok Live Search API - real-time web and news search | blockrun.ai | - | $0.2635 | listed |
| BlockRun.AI Get OHLCV candlestick data for a Binance trading pair | blockrun.ai | - | $0.0085 | listed |
| BlockRun.AI AI music generation API - pay per track with USDC on Base | blockrun.ai | - | $0.106 | listed |
| BlockRun.AI AI sound effect generation (ElevenLabs) — pay per call with USDC on Base | blockrun.ai | - | $0.053501 | listed |
| Blockchain IQ Blockchain IQ — current market data for one coin | blockchainiq.co | - | $0.002 | listed |
| Blockchain IQ Blockchain IQ — one analytics dashboard's panels | blockchainiq.co | - | $0.25 | listed |
| Blockchain IQ Blockchain IQ — global crypto market snapshot | blockchainiq.co | - | $0.02 | listed |
| Blockchain IQ Blockchain IQ — daily price history for one coin | blockchainiq.co | - | $0.03 | listed |
| Blockchain.info API Paid AI-agent access to Blockchain.com Explorer API | blockchain.info | - | $0.001 | listed |
| Blockchain.info API Paid AI-agent access to Blockchain.com Explorer API | blockchain.info | - | $0.001 | listed |
| Blockchains Ranked By Defi Tvl With Market Share API Blockchains ranked by DeFi TVL with market share — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.002 | listed |
| Blocks API Single Kaspa block extract with full DAG topology (parents, selected-parent, blue/daa score, chain-block flag). AI agent API for DAG-aware indexers. Informational research data — not investment advice. | carbon-cashmere.de | - | $0.02 | listed |
| Blockstack API Stacks (STX) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.001 | listed |
| Blue Cap hash.compute Compute a SHA-256 digest for customer-supplied UTF-8 or base64-decoded bytes through a stable machine endpoint. Returns the reproducible digest through a receipted external execution. | soundiq.io | - | $0.01 | listed |
| Bnb (bnb) Price In Usd Now, With 24h And 7d Change API BNB (BNB) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.001 | listed |
| Bnb Chain Token Launches With Safety Verdicts API BNB Chain Token Launches with Safety Verdicts. BNB Chain token launches with safety verdicts: brand-new BSC pools (PancakeSwap and others), dust filtered out, each token scored with every reason listed plus pool stats. Up to 20 verdicts per call. Free sample at /api/bnb/sample/launches. | saylorinnovations.com | - | $20,000.00 | listed |
| Bnb Chain Token Verdict API BNB Chain Token Verdict. BNB Chain (BSC) token verdict and wallet-risk check: any BEP-20 token address gets avoid / high-risk / caution / looks-ok, a 0-100 score with every deduction explained, honeypot and buy/sell tax checks, owner privileges (hidden owner, mintable, blacklist, pausable, tax changeable), top-10 holder concentration and live PancakeSwap/DEX liquidity. Free sample at /api/bnb/sample. | saylorinnovations.com | - | $10,000.00 | listed |
| Bond Yields API South African SA benchmark bond yields (SARB closing yields on the R2030 and R209 South African government benchmark bonds, key reference points for the domestic yield curve.) Clean cited JSON with official source URL, effective date and freshness flag. | zaref.dev | - | $0.005 | listed |
| Bond price Price a fixed-coupon bond from its yield to maturity: present-value the coupons plus face. Returns clean price, coupon per period, current yield, and premium/discount vs par. | agent402.tools | - | $0.001 | listed |