{"uid":"cap_H6L0Nm9-D83LrQIdMXvo2","slug":"halowerk-bridge-capital-flow-metrics-1bf74df9","name":"Halowerk Bridge Capital Flow Metrics","description":"Measures how much bridged capital sits on a chain and how that changed. bridged_usd is the sum of canonical and external value: what came in over the canonical bridge of the chain plus what third party bridges brought, while natively issued value is reported apart because it never crossed a bridge. net_usd carries its sign meaning in a field of its own, positive always means capital moved INTO the queried chain. inflow_usd and outflow_usd are the summed positive and negative steps of the sampled","url":"https://markt.halowerk.com/bridge","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"type":"string","default":"base","pattern":"^[a-z0-9_-]{2,32}$","description":"Chain to measure, as L2BEAT id or slug, for example base, arbitrum, op-mainnet, linea, scroll, starknet. Layer 2 and layer 3 chains only."},"period":{"enum":["24h","7d"],"type":"string","default":"24h","description":"Length of the observed window: 24h or 7d."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TN5xw0cXlaIyBrwDKkuQG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns bridged capital metrics for a blockchain — including total bridged USD, canonical vs. external bridge inflows/outflows, and net capital movement into or out of the chain over a specified period.","exampleAgentPrompt":"What's the current bridged capital on Arbitrum — break it down into canonical vs external bridge inflows, show me the net USD flow sign, and give me the inflow and outflow totals for the last 24 hours.","exampleUseCases":[{"title":"Monitor capital flight from an L2","prompt":"Is capital flowing out of Optimism right now? Show me the net_usd sign and the total outflow_usd over the last 24 hours so I can tell if funds are leaving the chain."},{"title":"Compare canonical vs third-party bridge volume","prompt":"For Base chain, how much capital came in through its canonical bridge versus third-party bridges today? I want to see bridged_usd split into canonical and external portions."},{"title":"Detect bridging surge before a DeFi event","prompt":"Check if there's been an unusual inflow_usd spike onto zkSync in the past hour — I want to know if a large amount of capital just bridged in ahead of a token launch."}],"resultDescription":"Returns a structured object with bridged_usd (sum of canonical and external bridged value), natively_issued_usd (assets that never crossed a bridge), net_usd (signed value — positive = capital moved into the queried chain), inflow_usd (sum of positive bridge steps), and outflow_usd (sum of negative bridge steps) over the sampled period.","failureModes":["Unsupported chain key returns an error or empty result","Time window too broad may result in data gaps or timeout","Missing required POST body fields returns a 400-level error","Chain with no bridge activity returns zero values across all fields","Rate limiting or payment failure due to x402 protocol issues"],"whenToPreferThis":"Choose this endpoint when you need to understand cross-chain capital dynamics — specifically how much USD is locked in bridges on a given chain, whether capital is net flowing in or out, and how canonical bridge flows differ from third-party bridge flows. Prefer this over generic TVL APIs when you need the inflow/outflow decomposition and the net_usd sign signal for directional capital movement analysis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:52:37.788Z","isFirstParty":false}