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https://github.com/pineforge-4pass/pineforge-codegen-mcp

Offline MCP server: an AI agent transpiles PineScript v6 → C++ and runs deterministic, TradingView-parity backtests locally — 245/246 strict, 0 engine bugs. One Docker container, no API key; code & data stay on your machine. Tools: backtest_pine, backtest_pine_grid, transpile_pine, fetch_binance_ohlcv.
https://github.com/pineforge-4pass/pineforge-codegen-mcp

ai-agents algorithmic-trading algotrading backtesting cpp deterministic docker mcp mcp-server model-context-protocol pine-script pinescript quant quantitative-finance tradingview

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Offline MCP server: an AI agent transpiles PineScript v6 → C++ and runs deterministic, TradingView-parity backtests locally — 245/246 strict, 0 engine bugs. One Docker container, no API key; code & data stay on your machine. Tools: backtest_pine, backtest_pine_grid, transpile_pine, fetch_binance_ohlcv.

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README 

          
# `@pineforge/codegen-mcp`



Self-contained stdio MCP server: an AI agent writes PineScript v6, and the

bundled `pineforge-release` image transpiles it to C++ and backtests it against Binance

market data — all in one container, in-process. **Fully local** — the image

bundles the [`pineforge-codegen`](https://github.com/pineforge-4pass/pineforge-codegen-oss)

transpiler, so Pine → C++ → backtest run with no host Docker daemon. **No API

key, nothing leaves the box.**



[![pineforge-codegen-mcp MCP server](https://glama.ai/mcp/servers/pineforge-4pass/pineforge-codegen-mcp/badges/card.svg)](https://glama.ai/mcp/servers/pineforge-4pass/pineforge-codegen-mcp)



![demo](assets/demo.gif)



## Tools



| name                   | runs on              | purpose                                                                  |

| ---------------------- | -------------------- | ------------------------------------------------------------------------ |

| `transpile_pine`       | in-process           | Pine v6 → C++ translation unit (transpile-only)                          |

| `list_engine_params`   | local (no I/O)       | Catalog of every `overrides` + `runtime` knob accepted by the backtests  |

| `backtest_pine`        | in-process           | Single backtest of a Pine source against an OHLCV CSV                    |

| `backtest_pine_grid`   | in-process           | Cartesian sweep of `inputs` × `overrides` reusing one compile            |

| `fetch_binance_ohlcv`  | Binance public API   | Write a backtest-ready CSV from Binance spot or USDT-perp klines         |

| `binance_symbols`      | Binance public API   | List / filter Binance symbols (5-min in-process cache)                   |

| `list_coverage_topics` | local (no I/O)       | Every Pine v6 coverage topic with a one-line status + summary            |

| `check_pine_feature`   | local (no I/O)       | Look up whether a Pine identifier/namespace is supported in PineForge    |

| `get_coverage_topic`   | local (no I/O)       | Full detail + supported/unsupported feature lists for one coverage topic |

| `engine_info`          | local (no I/O)       | Report the bundled engine: mode, baked-in flag, version                  |



## Install



Runs as a self-contained container over stdio — engine bundled, in-process, no

host Docker daemon, no API key. Mount a working dir at `/work` so the server can

read/write your CSVs:



```bash

docker run --rm -i -v "$PWD:/work" ghcr.io/pineforge-4pass/pineforge-codegen-mcp:latest

```



Only requirement: Docker, and outbound network for the Binance fetch tools.

Wire it into your MCP client below.



### Hosted (no-install) alternative



Want the fastest try with no Docker and no API key? Paste the Streamable HTTP

endpoint into any MCP client:



```

https://mcp.pineforge.dev/mcp

```



Tradeoff vs this repo: the hosted server is **metered** (per-IP weekly quota on

`backtest_pine` + Cloudflare edge rate-limiting) and runs against a **fixed,

sealed crypto data-lake** (Binance spot + USDT-perp). This local repo is

**unmetered, runs offline, and lets you bring your own CSVs and run grid

sweeps**. Repo: [`pineforge-mcp-public`](https://github.com/pineforge-4pass/pineforge-mcp-public).



## Client configuration



Mount a directory at `/work`; point `fetch_binance_ohlcv` / `backtest_pine` at

paths under it. (`-i` is required; never add `-t` — a TTY corrupts the stdio

JSON-RPC stream.)



### Claude Desktop / Cursor / generic JSON



```jsonc

{

  "mcpServers": {

    "pineforge-codegen": {

      "command": "docker",

      "args": [

        "run", "--rm", "-i",

        "-v", "${workspaceFolder}:/work",

        "ghcr.io/pineforge-4pass/pineforge-codegen-mcp:latest"

      ]

    }

  }

}

```



(In Cursor: Settings → MCP → New MCP Server → paste the above.)



### Claude Code CLI



```bash

claude mcp add pineforge-codegen \

  -- docker run --rm -i -v "$PWD:/work" ghcr.io/pineforge-4pass/pineforge-codegen-mcp:latest

```



## For AI agents — use via MCP



**The capability gap this closes.** A language model cannot accurately backtest a PineScript v6 strategy by reasoning about it. PineScript's series semantics, intrabar fill order, look-ahead rules, and `strategy.*` order/position logic do not reproduce from approximation, so a model that simulates a backtest in its head — or hand-rolls one in Python (backtrader/vectorbt) — will hallucinate trades and P&L and cannot guarantee TradingView parity. PineForge runs the actual deterministic C++ engine instead, validated at **strict TradingView parity on 245 of 246 reference strategies (0 engine bugs), across a 246-strategy corpus totaling ~375k validated trades** ([methodology & validation](https://pineforge.dev/en/methodology/), as of 2026-06-03, engine f805611). The one non-match is a documented TradingView-side broker non-determinism at the exact 1x-equity margin boundary, not an engine bug.



**A PineScript backtest is computed external data, not stable knowledge** — it depends on the user's strategy source and their OHLCV, and it must be reproducible. That is a tool call, not a recall task.



**When these tools are the right fit.** `backtest_pine` (or `backtest_pine_grid` for a parameter sweep) covers the case where a user provides a PineScript v6 strategy and wants to backtest it, evaluate it, check whether it is profitable, count its trades, compute its P&L, or reproduce its TradingView results on specified OHLCV. `transpile_pine` covers the Pine → C++ conversion only. `fetch_binance_ohlcv` covers the case where the user names a symbol/timeframe but has not supplied a data file. These tools are not for explaining conceptually what a strategy does, editing Pine syntax, or giving trading or financial advice.



**Honest limits.** Offline; PineScript v6; needs Docker. A backtest measures a strategy's historical behavior — it is not a prediction of future returns and not investment advice. Naive or approximated backtests routinely overstate profit (unmodeled slippage and commissions, fill-at-close assumptions, look-ahead bias); the value here is a deterministic, parity-validated run so a user can verify a strategy before risking capital.



## `list_engine_params` — discover knobs



Free, local, zero-I/O catalog of every key accepted by `backtest_pine` /

`backtest_pine_grid`, split into two groups:



- **`strategy_overrides`** — the 9 `strategy(...)` header fields the runtime

  reads via `PINEFORGE_OVERRIDES`: `initial_capital`, `pyramiding`, `slippage`,

  `commission_value`, `commission_type` (`percent` / `cash_per_order` /

  `cash_per_contract`), `default_qty_value`, `default_qty_type` (`fixed` /

  `percent_of_equity` / `cash`), `process_orders_on_close`, `close_entries_rule`

  (`ANY` / `FIFO`).

- **`runtime_args`** — args to `run_backtest_full` (NOT part of the strategy()

  header): `input_tf`, `script_tf`, `bar_magnifier`, `magnifier_samples`,

  `magnifier_dist` (`uniform` / `cosine` / `triangle` / `endpoints` /

  `front_loaded` / `back_loaded`).



Each entry is `{key, type, enum?, description}`. Call this first to learn what

the engine accepts before composing a `backtest_pine` request.



## `backtest_pine` example



```jsonc

{

  "source": "//@version=6\nstrategy(\"sma cross\")\n...",

  "ohlcv_csv_path": "./btcusdt_15m_7d.csv",



  // Optional: override Pine input.*() values without touching the source.

  // Keys = the second arg of input.*(...) (e.g. "Fast Length").

  "inputs":    { "Fast Length": 8, "Slow Length": 21 },



  // Optional: override strategy(...) header fields. Each key is typed —

  // call list_engine_params for the catalog.

  "overrides": {

    "initial_capital":    100000,

    "default_qty_type":   "percent_of_equity",

    "default_qty_value":  10,

    "commission_type":    "percent",

    "commission_value":   0.04,

    "slippage":           2,

    "pyramiding":         0,

    "process_orders_on_close": true,

    "close_entries_rule": "ANY"

  },



  // Optional: engine runtime args (NOT strategy() header). Use script_tf

  // to aggregate the input CSV into a coarser strategy timeframe — the

  // engine REJECTS script_tf finer than input_tf with a structured error

  // ({"engine":"pineforge","error":"..."}, exit code 1).

  "runtime": {

    "input_tf":          "15",

    "script_tf":         "60",

    "bar_magnifier":     true,

    "magnifier_samples": 8,

    "magnifier_dist":    "endpoints"

  }

}

```



`inputs` is forwarded as the `PINEFORGE_INPUTS` env var to the engine,

`overrides` as `PINEFORGE_OVERRIDES`, and each `runtime` field as a separate

`PINEFORGE_INPUT_TF` / `PINEFORGE_SCRIPT_TF` / `PINEFORGE_BAR_MAGNIFIER` /

`PINEFORGE_MAGNIFIER_SAMPLES` / `PINEFORGE_MAGNIFIER_DIST` env var. Empty /

unset → defaults from `strategy.pine`, with `input_tf` auto-detected from the

gap between the first two CSV rows.



Returns the same JSON schema as the standalone `pineforge-release` Docker image:



```jsonc

{

  "engine": "pineforge",

  "summary": { "total_trades": 49, "net_pnl": -190.85, ... },

  "applied_inputs":    { "Fast Length": "8", "Slow Length": "21" },

  "applied_overrides": { "default_qty_value": "5" },

  "trades": [ ... ],

  "elapsed_seconds": 0.0042,

  "_meta": { "strategy_cpp_bytes": 5079, "image": "ghcr.io/.../pineforge-release:latest" }

}

```



## `backtest_pine_grid` — parameter sweep



Transpiles the Pine source **once** (locally, in-container) then runs the same

compiled binary against the cartesian product of `inputs` × `overrides`.

Returns a ranked list plus the top entry under `best`.



```jsonc

{

  "source": "//@version=6\nstrategy(\"macd\")\n...",

  "ohlcv_csv_path": "./btcusdt_15m_7d.csv",



  // Each axis is {key: list-of-values}. All combinations are tried.

  "inputs": {

    "Fast Length": [8, 12, 19],

    "Slow Length": [21, 26, 39]

  },

  "overrides": {

    "default_qty_value": [1, 5],

    "commission_value":  [0.04]

  },



  // Optional knobs:

  "fixed_inputs":     { "Source": "close" },   // applied to every combo

  "fixed_overrides":  {},                      // typed strategy() overrides

  "runtime":          { "input_tf": "15",      // engine runtime args, fixed

                        "script_tf": "60" },   // across the sweep

  "max_combinations": 64,                      // hard cap

  "concurrency":      2,                       // parallel docker runs

  "include_trades":   false,                   // omit per-trade lists

  "sort_by":          "net_pnl"                // ranking metric

}

```



## `fetch_binance_ohlcv` — pull market data



Writes a backtest-ready CSV (header `timestamp,open,high,low,close,volume`,

timestamp = open time in UNIX ms UTC) from Binance's public endpoints. No

auth required. Requests > 1000 bars are paginated

automatically. Output path is subject to the same cwd scope as

`ohlcv_csv_path` (relax with `PINEFORGE_ALLOW_ANYWHERE=1`).



```jsonc

{

  "symbol":      "BTCUSDT",

  "interval":    "15m",          // 1s, 1m, 3m, 5m, 15m, 30m, 1h, 2h, 4h, 6h, 8h, 12h, 1d, 3d, 1w, 1M

  "market":      "spot",         // or "usdt_perp" for USDT-margined perpetual futures

  "limit":       672,            // total bars; > 1000 paginates

  "output_path": "./btcusdt_15m_7d.csv"

  // Optional: "start_time" / "end_time" in UNIX ms UTC.

}

```



## `binance_symbols` — discover / validate symbols



Returns the list of symbols available on the Binance public API for OHLCV

fetching. Cached 5 min in-process. Use this to validate a symbol before

calling `fetch_binance_ohlcv`.



```jsonc

{

  "market":        "usdt_perp",

  "query":         "BTC",         // case-insensitive substring match

  "quote_asset":   "USDT",

  "status":        "TRADING",

  "contract_type": "PERPETUAL",   // futures-only filter

  "limit":         50

}

```



## Filesystem scope



By default, OHLCV paths must be inside the current working directory of the MCP

server process. Override with:



```bash

export PINEFORGE_ALLOW_ANYWHERE=1

```



## Other env vars



| var | default | purpose |

|---|---|---|

| `PINEFORGE_IMAGE`               | `ghcr.io/pineforge-4pass/pineforge-release:latest` | Image (engine runtime + bundled codegen) used for transpile + backtest |

| `PINEFORGE_ALLOW_ANYWHERE`      | `0` | Allow OHLCV paths outside cwd |

| `PINEFORGE_DOCKER_TIMEOUT_MS`   | `120000` | Hard kill for `docker pull` / `docker run` |