# BlockVectra

> Multi-chain RPC and blockchain data APIs

## Docs

- [Overview](https://docs.blockvectra.com/en/): Multi-chain JSON-RPC and Data API documentation across supported networks.
- [Supported Chains](https://docs.blockvectra.com/en/chains/): Supported blockchain networks, chain IDs, URL structures, and feature availability.
- [Data API](https://docs.blockvectra.com/en/api/data/): REST endpoints over indexed blockchain data across supported chains.
- [JSON-RPC](https://docs.blockvectra.com/en/api/json-rpc/): Supported JSON-RPC methods, CU weights, and error codes.
- [Full Reference](https://docs.blockvectra.com/en/api/json-rpc/reference/): Complete JSON-RPC 2.0 API specification — all methods, request/response shapes, and error codes.
- [Datasets](https://docs.blockvectra.com/en/datasets/): Structured datasets BlockVectra provides across supported chains.
- [Connect an AI agent to BlockVectra: llms.txt, OpenAPI and public JSON](https://docs.blockvectra.com/en/guides/ai-agents/): Integration guide for AI agents and LLM tools: discover capabilities, query public metadata, and call BlockVectra APIs using llms.txt, OpenAPI specs, and public endpoints.
- [What is not billed: error codes and billing rules](https://docs.blockvectra.com/en/guides/billing-rules/): A detailed breakdown of billing rules across HTTP status codes, JSON-RPC errors, and the Data API, with recommended actions for developers.
- [Daily DEX OHLC and VWAP for a token, with exact fractions](https://docs.blockvectra.com/en/guides/dex-daily-prices/): Query daily DEX OHLC prices and VWAP from the Data API, handle exact rational fractions in TypeScript and Python, and backfill historical data efficiently.
- [What the Free Plan Covers: Method Weights and Usage](https://docs.blockvectra.com/en/guides/free-plan/): Understand what the Free Plan covers based on real method weights, with task-based calculations and upgrade paths.
- [Recent node data vs indexed history: when to use eth_getLogs and when to use the transfers API](https://docs.blockvectra.com/en/guides/logs-vs-transfers/): Compare the JSON-RPC eth_getLogs method with the Data API transfers endpoints: block ranges, pagination, coverage, and finality limits, and which one fits typical tasks.
- [One key, many chains: switching an example to another chain](https://docs.blockvectra.com/en/guides/one-key-many-chains/): The same API key works on every supported chain. Learn how URLs are structured, how to discover chains programmatically, and how balances and limits are pooled.
- [Per-method pricing: reading CU and price per million calls](https://docs.blockvectra.com/en/guides/reading-cu-pricing/): Understand BlockVectra's CU metering, method weight resolution rules, price per million calls formula, and how to estimate per-cycle usage and costs.
- [Daily on-chain metrics for tokenized stocks with the Data API](https://docs.blockvectra.com/en/guides/stocks/): Learn how to query daily tokenized stock leaderboards and historical metrics with the Data API, covering fields, encoding conventions, pagination, and usage estimates.
- [Quickstart](https://docs.blockvectra.com/en/quickstart/): Call the JSON-RPC endpoint and the Data API with your API key.
- [Quickstart (Markdown source)](https://docs.blockvectra.com/md/en/quickstart.md): Every docs page is also available as raw Markdown at `/md/{lang}/{path}.md` — for example the Quickstart Markdown is at https://docs.blockvectra.com/md/en/quickstart.md.
- [OpenAPI Specifications](https://docs.blockvectra.com/openapi/json-rpc.yaml): Machine-readable OpenAPI 3.1 specifications for JSON-RPC (https://docs.blockvectra.com/openapi/json-rpc.yaml) and Data API (https://docs.blockvectra.com/openapi/data.yaml).

## Chinese / 中文

- [概览](https://docs.blockvectra.com/zh/): 支持的各区块链网络的 JSON-RPC 与 Data API 文档。
- [支持的链](https://docs.blockvectra.com/zh/chains/): 支持的区块链网络、Chain ID、URL 结构与特性支持情况。
- [Data API](https://docs.blockvectra.com/zh/api/data/): 基于各支持链索引数据的 REST 接口。
- [JSON-RPC](https://docs.blockvectra.com/zh/api/json-rpc/): 各链支持的 JSON-RPC 方法、CU 权重与错误码。
- [完整参考](https://docs.blockvectra.com/zh/api/json-rpc/reference/): 完整的 JSON-RPC 2.0 API 规范——所有方法、请求/响应结构与错误码。
- [数据集](https://docs.blockvectra.com/zh/datasets/): BlockVectra 为各支持链提供的结构化数据集。
- [给 AI agent 接入 BlockVectra：llms.txt、OpenAPI 与公开 JSON](https://docs.blockvectra.com/zh/guides/ai-agents/): 面向 AI agent 与 LLM 工具的接入指南：通过 llms.txt、OpenAPI 规格与无需 key 的公开 JSON 接口实现自动化链上交互。
- [哪些请求不计费：错误码与计费规则](https://docs.blockvectra.com/zh/guides/billing-rules/): 详细梳理 HTTP 状态码、JSON-RPC 错误码与 Data API 中的计费判定规则与开发者建议操作。
- [获取代币的 DEX 日线（开高低收与 VWAP）与精确分数](https://docs.blockvectra.com/zh/guides/dex-daily-prices/): 根据 Data API 规格获取代币的 DEX 每日价格与成交量加权平均价（VWAP），掌握分子分母精确分数表示法、无损精度换算与历史日线分段回填。
- [免费套餐能做什么：按真实方法权重换算](https://docs.blockvectra.com/zh/guides/free-plan/): 根据真实方法权重换算免费额度，了解免费套餐适合的调用场景与升级路径。
- [节点近况与已索引历史：什么时候用 eth_getLogs，什么时候用转账接口](https://docs.blockvectra.com/zh/guides/logs-vs-transfers/): 对比 JSON-RPC 的 eth_getLogs 与 Data API 的转账接口：区块跨度、分页、覆盖范围与最终性限制，以及典型任务该选哪一个。
- [一个 key 切链：把示例从一条链换到另一条链](https://docs.blockvectra.com/zh/guides/one-key-many-chains/): 同一个 API key 适用于所有支持的链。了解 URL 路径结构、程序化发现链能力，以及跨链共用余额与限流。
- [按方法计价：怎么读懂 CU 和每百万次价格](https://docs.blockvectra.com/zh/guides/reading-cu-pricing/): 了解 BlockVectra 的 CU 计量原理、权重匹配解析规则与每百万次调用价格换算公式，掌握每个用量周期的用量与成本估算方法。
- [用 Data API 查代币化股票的每日链上指标](https://docs.blockvectra.com/zh/guides/stocks/): 了解如何通过 Data API 查询代币化股票的每日链上活跃榜单与单个代币历史指标，掌握字段含义、编码约定、分页规则与用量估算。
- [快速上手](https://docs.blockvectra.com/zh/quickstart/): 用 API key 调用 JSON-RPC 与 Data API。
- [快速上手（Markdown 原文）](https://docs.blockvectra.com/md/zh/quickstart.md)：每个文档页都可在 `/md/{lang}/{path}.md` 取得 Markdown 原文，例如快速上手页面在 https://docs.blockvectra.com/md/zh/quickstart.md。
- [OpenAPI 规范](https://docs.blockvectra.com/openapi/json-rpc.yaml): 机器可读的 OpenAPI 3.1 规格文件：JSON-RPC (https://docs.blockvectra.com/openapi/json-rpc.yaml)、Data API (https://docs.blockvectra.com/openapi/data.yaml)。