Teardrop MCP gateway: paid tools for autonomous agents (x402, credits).
| Endpoint | https://api.teardrop.dev/tools/mcp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 35 tools · grade D (64) · pin ts_672fd6f2311ef9aaa948e582032f85d3 · protocol 2025-06-18 |
| First / last listed | 2026-10-29 00:54 UTC / 2026-10-29 00:54 UTC |
| Grade over time | 2026-10-29: D (64), 35 tools |
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Tools: assess_counterparty_risk assess_market_resolution calculate convert_currency decode_transaction delegate_to_agent discover_agents get_datetime get_block get_chain_metrics get_dex_quote get_dex_volume get_defi_positions get_gas_price get_lending_rates get_liquidation_risk get_token_approvals get_wallet_approvals get_token_price get_protocol_tvl get_token_price_historical get_yield_rates web_search count_text_stats http_fetch get_eth_balance get_erc20_balance get_transaction get_wallet_portfolio get_wallet_history get_wallet_positions read_contract record_predictions resolve_ens validate_opportunity
assess_counterparty_risk | Return a decision-ready counterparty-risk verdict for an EVM address before funds or authority are committed. The result branches to high_risk, caution, acceptable, or insufficient_data with the evidence needed for the calling agent to act.
Use when: Delegate this check before sending funds, granting approvals, or interacting with an unknown EVM address when the caller needs a bounded risk decisi params: wallet_address*, chain_ids |
assess_market_resolution | Return a decision-ready resolution-risk verdict for one Polymarket market before an agent trades, quotes, or forecasts it. The result branches to tradeable, ambiguous, avoid, or insufficient_data and names the resolution basis (price_feed, official_source, media_consensus, unspecified), UMA dispute state, rule-wording risks, and executability (liquidity, spread) so the calling agent can act withou params: market* |
calculate | Evaluate a safe arithmetic expression and return the numeric result. Supports +,-,*,/,**,%,sqrt,abs,round,floor,ceil,log,sin,cos,tan,pi,e. Use for derived figures (ratios, differences, percentages) that no tool output already provides.
Use when: Use when an agent must derive a value that tool outputs do not already include, such as a ratio, spread, or percentage. Do not use to re-derive pre-compu params: expression* |
convert_currency | Convert an amount between fiat currencies (USD, EUR, GBP) and crypto assets (BTC, ETH, USDC, SOL) and return the converted amount plus the exchange rate used.
Use when: Use when an amount must be expressed in a different currency than the source data — for example converting a USD portfolio value into EUR, or a fiat amount into its crypto equivalent. For prices only, get_token_price returns the r params: amount*, from_currency*, to_currency* |
decode_transaction | Decode a transaction's calldata into a human-readable function name and arguments, and return transaction status (1=success, 0=revert), gas used, and block number. Uses a supplied ABI when provided, otherwise 4byte.directory. Supports Ethereum mainnet and Base.
Use when: Use when one known transaction must be explained — what function was called, with what arguments, and whether it succeeded. For params: tx_hash*, chain_id, abi_json |
delegate_to_agent | Delegate a task to a remote A2A-compliant agent: discover its capabilities via its agent card, send it a message, handle payment, and return the result. Use only when no local platform tool can fulfil the request.
Use when: Use when a task requires specialist capabilities beyond the local tool set. Call discover_agents first when the remote agent URL is unknown. Do not retry unchanged after error params: agent_url*, task_description*, task_type |
discover_agents | Find opt-in remote A2A agents, published tool capabilities, endpoints, and public reputation status.
Use when: Use before delegate_to_agent when a specialist agent is needed but its URL is unknown.
Limitations: Discovery is read-only and does not add an agent to the org allowlist; delegate_to_agent remains authoritative.
Alternatives: delegate_to_agent params: q, limit |
get_datetime | Return the current UTC date and time as a formatted string and ISO 8601 timestamp, for grounding time-relative reasoning in the actual clock rather than training-data assumptions.
Use when: Use when a task must anchor on the current date or time — computing ages, windows, deadlines, or 'as of today' context. The runtime context block already states the date, so call this only when a specific strf params: format |
get_block | Get block details (timestamp, gas used, base fee, miner, transaction count) for an Ethereum or Base block by number, hash, or 'latest'. Use to anchor events to a point in chain time.
Use when: Use when a question depends on when a block occurred, how full it was, or its base fee — for example dating a transaction or checking congestion at a specific height. For current fee levels use get_gas_pric params: block_identifier, chain_id |
get_chain_metrics | Compare blockchain ecosystem health via DeFiLlama: current TVL, 7/30-day TVL change, and aggregate fee activity. Pass chains such as ['Ethereum', 'Arbitrum', 'Solana'] for a focused comparison, or omit chains to inspect the highest-TVL ecosystems.
Use when: Use for ecosystem-level comparisons — which chains are growing, where fee activity concentrates, or how a chain's TVL trended. For a single p params: chains, days, limit |
get_dex_quote | Get the best Uniswap v3 swap quote on Ethereum (chain_id=1) or Base (chain_id=8453) via direct on-chain QuoterV2 calls. Queries all four fee tiers (100/500/3000/10000 bps) in parallel and returns the tier with the highest output amount, along with per-tier breakdown. Inputs are raw uint256 amounts and EIP-55 checksummed addresses; native ETH is not quoted directly — pass the WETH address. Returns params: token_in*, token_out*, amount_in*, chain_id |
get_dex_volume | Compare decentralized exchange activity via DeFiLlama: 24h/7d/30-day volume, period-over-period changes, and each protocol's share of reported global 24-hour DEX volume. Filter by protocol and rank by a 1-, 7-, or 30-day lookback window.
Use when: Use for landscape questions — which DEXs dominate volume, how activity shifted week-over-week, or a specific protocol's relative share. For executable params: protocols, lookback_days, limit |
get_defi_positions | Block-accurate DeFi positions for a wallet across Aave v3, Compound v3, Uniswap v3 LP, and Lido on Ethereum or Base. Returns Aave account health (collateral, debt, health factor, LTV) with per-reserve breakdown, Compound v3 market positions, Uniswap v3 LP positions by token ID, and on Ethereum the Lido stETH/wstETH balances with the current wstETH-to-stETH equivalent. Per-protocol failures are iso params: wallet_address*, chain_id |
get_gas_price | Get current EIP-1559 gas fees on Ethereum or Base: base fee, priority fee, next-block base fee estimate, and congestion (gas_used_ratio >0.5 busy, >0.9 very congested). Optional USD estimates cover a simple transfer and a swap-like transaction. Cached 10 seconds per chain.
Use when: Use before advising a transaction — to time execution, size a gas budget, or judge congestion. Call once per decisi params: chain_id, include_usd_estimate |
get_lending_rates | Get current on-chain lending supply/borrow APYs for Aave v3 reserves and Compound v3 markets on Ethereum or Base, with per-asset snapshots and Compound utilization. Use for protocol-specific yield comparisons such as USDC on Aave vs Compound.
Use when: Use for protocol-specific lending-rate questions (e.g. 'Aave vs Compound USDC rates'). Prefer over get_yield_rates when the protocols are known; u params: protocol, chain_id, assets |
get_liquidation_risk | Assess DeFi liquidation risk for up to 50 wallets across Aave v3 and Compound v3 on Ethereum or Base. Returns per-wallet health factor, tiered risk classification (liquidatable, critical, warning, caution, healthy, no_debt), and an overall_tier aggregate. Per-protocol failures are isolated — one protocol's RPC error does not blank the other's result.
Use when: Use for multi-wallet batch risk asse params: wallet_addresses*, chain_id |
get_token_approvals | Block-accurate audit of ERC-20 allowances for a wallet across curated DeFi spenders (Uniswap, Aave, Compound, 1inch, 0x, OpenSea) on Ethereum or Base. Flags unlimited approvals by risk level (high=unknown spender, medium=trusted protocol, low=bounded). Use before swaps or after security incidents to detect active exploit vectors.
Use when: Use for a free, block-accurate Ethereum/Base check of an params: wallet_address*, chain_id, tokens, spenders |
get_wallet_approvals | Inspect a wallet's current ERC-20 token authorization exposure on one DeBank-supported chain. Returns discovered spenders, USD exposure, protocol attribution, and hacked or abandoned protocol flags. This is broader than the curated block-accurate get_token_approvals tool.
Use when: Use when broad spender discovery or cross-chain security screening is needed. Call once per chain because DeBank req params: wallet_address*, chain_id* |
get_token_price | Get current price, 24h change, market cap, FDV, and volume for one or more crypto tokens. Accepts ticker symbols, full names, or CoinGecko IDs; unknown symbols resolve automatically. Batch up to 50 tokens. Reuse price_usd/value_usd already returned by get_wallet_portfolio instead of re-calling.
Use when: Use for spot pricing of named tokens — including batched multi-token queries. Do not call for params: tokens*, vs_currency |
get_protocol_tvl | Get Total Value Locked for one or many DeFi protocols from DeFiLlama: current USD TVL, 7/30-day change, fees and revenue when reported, per-chain breakdown, and optional daily historical series. Batch multiple protocols via protocols=[...] — batch responses return one compact economic summary per protocol; single-protocol calls add chain and historical detail. Supports 3,000+ protocols; use DeFiLl params: protocol, protocols, include_historical, days |
get_token_price_historical | Get historical crypto prices over a 1–365 day window: period statistics (start, end, % change, high, low), a downsampled daily series, high_30d, std_30d, and dca_baseline_90d. Use for period comparisons and trend analysis; prefer over web_search for time-comparative financial queries. Pass stats_only=true when the daily series is unnecessary.
Use when: Use for time-comparative financial questions params: tokens*, days, vs_currency, stats_only |
get_yield_rates | Get DeFi yield pool rates from DeFiLlama across 1,000+ protocols and all chains: pools sorted by APY with TVL, base/reward APY, and 7d/30d mean APY context, filterable by protocol, chain, min TVL, min/max APY, and symbol. Returns up to 50 pools. For protocol-specific lending comparisons (Aave vs Compound) prefer get_lending_rates.
Use when: Use for broad cross-protocol yield discovery. Call at mo params: protocols, chain, min_tvl_usd, min_apy, max_apy, limit, symbols_any, stable_only |
web_search | Real-time web search via Tavily for current events, fact-checking, and research. Use search_depth='advanced' for complex queries (higher quality, higher cost) and topic='news' or 'finance' for headlines or market information.
Use when: Choose when the task needs current, external, or factual information not available from on-chain or local data — e.g. news, prices, documentation, or fact-checking params: query*, num_results, search_depth, topic |
count_text_stats | Return word, character, sentence, and paragraph counts plus average words per sentence for a given text, for length checks and content sizing decisions.
Use when: Use when output length must be validated or reported — e.g. verifying a summary meets a length contract or comparing document sizes. Do not use for semantic summarization; it counts only.
Limitations: Pure counting on the provided text params: text* |
http_fetch | Fetch a web page and return its main text content, cleaned of markup. Use to read articles, documentation, and other resources referenced by URL. Blocks private and cloud-metadata addresses and re-validates every redirect hop.
Use when: Use when a known URL's content is needed and structured tools cannot answer — e.g. reading a linked document or API docs. For general factual lookup prefer web_se params: url*, max_chars |
get_eth_balance | Get the exact on-chain native ETH balance of an address on Ethereum or Base, in wei and ether. get_wallet_portfolio already includes native ETH in its holdings — call this only for a standalone balance without a portfolio scan.
Use when: Use when a wallet's gas-availability or standalone ETH amount must be verified block-accurately. Do not call after or alongside get_wallet_portfolio — the holdin params: address*, chain_id |
get_erc20_balance | Get the exact on-chain ERC-20 balance of a wallet for one token contract, normalized by decimals and returned with the token's symbol. Use for a precise single-token check.
Use when: Use when a specific token contract's balance must be verified block-accurately — e.g. confirming funds before an approval or transfer. For a multi-asset portfolio view use get_wallet_portfolio instead.
Limitations: params: wallet_address*, token_address*, chain_id |
get_transaction | Get details and receipt for one Ethereum or Base transaction by hash: bounded calldata, normalized event logs, transaction index, and receipt-derived effective gas price and fee when available. Use to verify a specific transaction's status and outcome.
Use when: Use when one known transaction must be verified — status, logs, gas paid, or execution outcome. To understand what the calldata means us params: tx_hash*, chain_id |
get_wallet_portfolio | Get aggregated token holdings with USD values for a wallet address. Tracks 19 major assets on Ethereum and 12 on Base, including spot, lending, liquid-staking, restaking, and stablecoin assets. Sorted by USD value. Returns up to 20 holdings. Includes native ETH balance in the holdings list — calling get_eth_balance separately after this is redundant.
Use when: Choose when you need a wallet's over params: wallet_address*, chain_id |
get_wallet_history | Get one page of decoded transaction history for an EVM wallet across DeBank-supported chains. Returns send, receive, and approval categories with protocol, token, exchange, gas, and USD metadata. Use the returned next_cursor as start_time to page backward.
Use when: Use for wallet activity discovery, protocol interaction history, exchange exposure, and gas analysis. Page backward with next_cursor params: wallet_address*, chain_ids, start_time, page_count |
get_wallet_positions | Get a wallet's DeFi positions across all DeBank-supported chains and protocols. Returns protocol-level positions, asset/debt/net USD values, optional token lists, aggregate exposure, and optional all-chain net worth. Set include_token_balances=true to also return DeBank's complete cross-chain wallet token list. Set include_token_lists=false for a compact balance and debt summary without nested pos params: wallet_address*, include_net_worth, include_token_balances, include_token_lists |
read_contract | Call any view/pure function on a smart contract and return the decoded result, using a supplied ABI fragment. Supports historical reads via block_identifier and caller_address context for msg.sender-dependent views. Read-only: state-changing functions are rejected.
Use when: Use when a protocol question needs a contract read that no higher-level tool covers — e.g. a niche view function or a proto params: contract_address*, abi_fragment*, function_name*, args_json, args, block_identifier, chain_id, caller_address |
record_predictions | Record a complete structured prediction document for downstream evaluation. Call once with the exact machine-readable prediction; the human-readable report is provided separately.
Use when: Use at the end of a scheduled analysis run to persist the machine-readable prediction for later scoring. Call exactly once with the complete prediction document — never partially or repeatedly.
Limitations: I params: predictions* |
resolve_ens | Resolve an ENS name (e.g. 'vitalik.eth') to an Ethereum address, or an address to its primary ENS name, with avatar text record when available. Mainnet only.
Use when: Use only when no 0x address is available and a name must become an address (or vice versa for attribution). If a 0x address is already present in the task or session, use it directly — resolution is redundant and adds latency.
Lim params: name* |
validate_opportunity | Return a decision-ready yield-opportunity verdict before capital is deployed. The result branches to sustainable, caution, unsustainable, or insufficient_data and gives the calling agent the evidence needed to proceed, pause, or reject the opportunity.
Use when: Delegate this check before deploying capital into a DeFi yield pool or staking opportunity when the caller needs an independent sustaina params: pool_id* |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.