ta-lib.org valid

TA-Lib.org

Open-Source library for technical analysis of time series and trading data

For agents: Open-source TA-Lib library for technical analysis of time series and trading data, with C, Rust, Java and C# APIs and per-function reference docs.

technical analysistrading indicatorsta-libtime seriespandas-ta migration

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-21T03:34:32.393Z. Cached copy · Source on ta-lib.org

# TA-Lib.org

> Open-Source library for technical analysis of time series and trading data

## Key facts

TA-Lib computes technical-analysis indicators and recognizes candlestick patterns over price series.

This documentation is built from the main branch and can be ahead of the newest release, so any installed version, the newest included, can lack what is described here or compute different values. The [changelog](https://github.com/TA-Lib/ta-lib/blob/main/CHANGELOG.md) records each release's changes, and its "Not Released Yet" section lists changes no release has yet. Pin the exact version when results must reproduce.

- **C is the reference.** Open source under the BSD license, in use since 2001. Each function has a page with its inputs, outputs, parameters (type, default, accepted values) and numerical stability, at `https://ta-lib.org/functions/<name>.md` with the name in lowercase (e.g. [RSI](https://ta-lib.org/functions/rsi.md)); the [function index](https://ta-lib.org/functions/index.md) lists them by group.
- **Native Rust, Java and C#.** Each is a port, not a binding (no FFI, JNI or P/Invoke), generated together with the C library from [one definition per function](https://ta-lib.org/contribute/index.md): [Rust](https://ta-lib.org/api/rust/index.md), [Java](https://ta-lib.org/api/java/index.md), [C#](https://ta-lib.org/api/csharp/index.md). Each is bit-identical to C over the same inputs, except that a result computed through a transcendental math function (such as `exp` or `log`) can differ in the last bits: each language takes the function from its own math library, and a platform's library can round a batch of values differently from one value, which is beyond TA-Lib's control; the difference can grow through the function's arithmetic ([determinism](https://ta-lib.org/spec/versions/index.md)). Whether a port's package is published, and how to add it, is in the "Add it to your project" section of its API page; the C library's install methods are on the [C install page](https://ta-lib.org/install/c/index.md).
- **Wrappers.** Python ([ta-lib-python](https://github.com/ta-lib/ta-lib-python)), R and other languages call the C library through [community wrappers](https://ta-lib.org/wrappers/index.md), each with its own conventions.
- **Batch API: defined values only.** A call computes the inclusive, zero-based `startIdx` to `endIdx` range and writes only the bars where the function is defined, from the start of the output buffer: `out[0]` is input bar `outBegIdx`, and `outNBElement` values follow in [C](https://ta-lib.org/api/index.md); Rust, Java and C# return the same pair as an `OutRange` (begin index and count). Nothing is padded, and too little data is a success with an empty range.
- **Errors.** An indicator call, batch or stream, reports a rejected argument as a non-zero `TA_RetCode` in C, an `Err(RetCode)` in Rust, and an exception carrying its `RetCode` in Java and C#. Other calls differ: a lookback answers -1 for an out-of-rang
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Claim my listing on Agent Web Map for ta-lib.org:
1. POST https://agentwebmap.com/v1/sites/ta-lib.org/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://ta-lib.org/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/ta-lib.org/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/ta-lib.org).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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