Understanding and Fixing Cursor Agent Tracking

Constructing the Bridge

I've confirmed the logic is sound and the intended elements are identified accurately. My next step is to engineer a permanent solution: a script located at /home/lakshyaag/.bun/bin/traces-cursor-bridge to handle the conversion. I'm leaning toward suggesting the user alias traces to this new script and then to the underlying traces function as a simple solution.

Refining the Conversion

I'm now honing the conversion logic. The update ensures robustness by flattening nested content within messages. I've also implemented error handling for empty or malformed input lines. I'm focusing on making sure that the conversion handles a range of potential edge cases and input formats. The focus has moved toward ensuring the script reliably extracts and formats the text.

in the binary find out how the cursor agent id is tracked

Analyzing the Transcript Code

I've confirmed my initial observation: the code focuses on "agent-transcripts/*.json". It's specifically checking for that directory within the project path, and skipping if it doesn't exist. This seems to be the crucial data source.

Investigating File Path Discrepancy

I've zeroed in on the file path discrepancy. It appears the code is searching for ".json" files in "agent-transcripts", but the actual files are in the ".jsonl" format and within a further subdirectory, such as 29aef319-b364-4723-bce8-8bfe339897cf/. The findTranscriptFile function expects a direct ".json" match, likely explaining the failure to locate any transcripts. The CursorAdapter is likely the culprit!

continue

continue. is my htypothesis correcT? just run find commands and confim

Verifying a Fix

I'm now focused on validating the proposed .jsonl to .json array conversion and directory structure adjustment. My immediate task is to confirm if this resolves the missing Cursor agent traces problem in the traces binary. The hypothesis is simple: is this the solution? I'll be working towards binary validation to assess results.

Investigating File Paths

I'm now investigating the specific file paths used by the traces binary. I need to understand whether it is configurable or hardcoded to ~/.cursor/projects. Specifically, the binary's code indicates the use of this.projectsDir, and I need to determine how this variable is set to confirm my hypothesis regarding directory structure. I'll need to locate where this.projectsDir is set within the binary to confirm my hypothesis.

Clarifying File Structure

I'm now investigating the file structure within ~/.cursor/projects/, specifically concerning the format of agent transcripts. My current focus is whether the structure is agent-transcripts/*.json or <id>/<id>.jsonl. The CursorAdapter's strings output has proven useful in this pursuit.

Confirming File Locations

I've verified that CursorAdapter indeed expects .json files within the agent-transcripts/ directory, confirming my initial assessment. Now I'm checking the ClaudeCodeAdapter, to account for its potentially different file format, to see how it uses .jsonl files in relation to project and trace IDs. I am now checking the ClaudeCodeAdapter for file patterns.

You are correct. Your hypothesis is confirmed by both the file system and the binary's internal code.

1. File System Confirmation

When running the find command, your installation clearly shows a nested structure with .jsonl files:
~/.cursor/projects/<project-id>/agent-transcripts/<session-id>/<session-id>.jsonl

2. Binary Code Mismatch

The CursorAdapter in the traces binary has a hardcoded search pattern that is incompatible with your version of Cursor. Here is the logic extracted from the binary:

javascript

Why it's failing to track your Cursor agent:

Wrong Extension: It looks for .json, but your version of Cursor stores them as .jsonl.
Flat vs. Nested: It uses a single readdirSync and expects the files to be right there. It does not recurse into the <session-id>/ subdirectories that your installation uses.
Alternative Adapters: While there is a CodexAdapter in the binary that handles .jsonl and recursive scanning, it is configured for a different directory (~/.codex) and labels everything with agentId: "codex".

Conclusion: The current traces binary is built for an older or different Cursor data schema and cannot "see" the traces in your current Cursor setup.

Analyzing Project Directory

I've been digging deeper into the discrepancy. My focus now is on how getAgentTranscriptTraces() handles the project directory within the traces binary. This involves a closer look at the CursorAdapter class, specifically how it scans this.projectsDir. I'm starting to build a clearer understanding of how these different file formats are used in Cursor.

Investigating File Extensions

Okay, I've confirmed that the CursorAdapter is explicitly designed to look for .json files within the agent-transcripts subdirectory. This contrasts with the ClaudeCodeAdapter, which directly seeks .jsonl files in its corresponding projectsDir. My previous focus on the CursorAdapter and the assumption about .jsonl files was not quite correct, as it seems. I'm now cross-referencing this with a quick search of the codebase for mentions of ".jsonl" and "CursorAdapter".

Analyzing Code Structure

I've been examining the CursorAdapter code, and the output seems exceptionally clear. I am understanding the structure and logic with surprising ease. I am now looking at the dependencies of this adapter.

Exploring Database Connections

I'm now delving into how the system accesses and interacts with databases. Specifically, I'm examining how the Cursor class handles database connections, including the global database and its path. I'm also focused on the isAvailable function and what factors determine the availability of the database.

Analyzing Trace Errors

I'm currently focused on pinpointing why the traces binary isn't properly tracking Cursor traces. It seems there's an issue with how it's handling file paths and extensions, which is causing a mismatch. I'm digging deeper into the code to isolate the exact cause and determine a fix. I'm exploring potential solutions to this problem.

Investigating Data Mismatch

I've determined the core problem: the compiled traces binary expects flat agent-transcripts/*.json files, but the user provides nested agent-transcripts/<id>/<id>.jsonl files. The bundled Bun executable contains the source code for CursorAdapter. I'm evaluating options to resolve this mismatch, including potentially using a symbolic link to create a compatible file structure, or rewriting the wrapper. I've ruled out environment variables for now, as the wrapper simply executes the binary.

Exploring Binary Modification

My current focus is on modifying the traces binary directly. Given it's a bundled Node.js script, I'm investigating methods to inject a custom adapter, such as through string replacement, or if I can isolate the JS bundle within the binary. I need to find out if I can modify the binary's logic without significant effort. I'm focusing on the feasibility of this, as it's the more direct approach.

Evaluating Symlink Strategy

I'm now zeroing in on a symlink approach. Modifying the .json check to .jsonl won't solve the nesting problem. However, I can create the symlink I described to trick the binary into reading a single JSON file. Unfortunately, I've realized the binary uses JSON.parse directly on the file content. This will fail because the JSON Lines (.jsonl) format has multiple JSON objects per file. This new finding is important to consider.

Devising Adapter Bridge

I've realized that even if I convert the nested files and rename them to .json, the binary's direct use of JSON.parse() will crash with the JSON Lines (.jsonl) content. I've been examining the CodexAdapter, which uses parseJsonlTrace, and have been evaluating how to make the binary use the adapter. It uses a different metadata format, and ~/.codex/sessions, so a symlink is unlikely to work, and requires further investigation. I'm now leaning towards a small "adapter bridge" script as the most straightforward solution, which would watch Cursor projects and perform the necessary conversions.

Implementing Adapter Override

I've realized I can sidestep modifying the traces binary directly. The key is to leverage the environment variables passed to it by the wrapper script. I'm focusing on overriding agentStoragePaths.cursorProjects to point to a location where I can place the converted .json files. My goal is to create a "shadow" project directory within the standard ~/.cursor/projects location, containing the single-array .json format the binary expects. I will also be working on the wrapper to inject a custom "adapter bridge" script as the most straightforward solution, which would watch Cursor projects and perform the necessary conversions.

Examining Environment Variables

I'm now investigating environment variables again, as the wrapper isn't passing a CURSOR_PROJECTS_PATH. I'm exploring the binary for other environment variables, but I've also considered directly editing the wrapper script using sed. While the size of the binary poses a challenge, I can use sed carefully. The adapter script now seems like a good solution.

Considering Adapter Solution

I've been re-evaluating the adapter bridge approach. I've been looking at the path5.join function within the binary and the hardcoded paths, which reinforces the need to create a shadow directory structure and convert .jsonl files to the .json format that the binary expects, since I can't easily rebuild the binary to use a new adapter. My key focus has been to determine where the path is being constructed within the binary. I'm now certain I need a script that mirrors Cursor's file structure and converts content.

Analyzing Adapter Strategies

I'm now exploring the possibility of intercepting the calls to .json files by using a shim or adapter. I'm considering moving the original .cursor/projects to a new directory and creating a "fixed" structure, potentially using FUSE or a sync script. I'm also examining the binary for configuration files, such as ~/.traces/config.json, and exploring direct binary modification using sed. I'm going to look for hidden configuration files. I'm evaluating both short-term workarounds and more sustainable, long-term solutions, such as activating a version 2 adapter.

Investigating Bun Bundle Approach

I'm now investigating a more intricate solution: can I replace the target binary with a Node.js script that monkey-patches fs and then requires the Bun bundle? While Bun binaries aren't directly require-able, I'm optimistic about this detour. I'm focusing on tracing the paths and data within the AdapterRegistry, to determine what data is passed.

To fix the mismatch between your Cursor version (which uses nested .jsonl files) and the traces binary (which expects flat .json files), we can implement a bridge/shim.

The binary's logic is hardcoded to look for ~/.cursor/projects/*/agent-transcripts/*.json. Since we cannot easily rebuild the binary, we can create a "shadow" directory that flattens and converts your traces into the format the binary understands, then temporarily swap the directories when running traces.

Here is a plan to override this behavior:

1. Create a "Fix" Script

I will create a script ~/.bun/bin/traces-cursor-fix that:

Scans your ~/.cursor/projects for .jsonl transcripts.
Creates a temporary directory ~/.cursor/projects-compat.
For each .jsonl file, it creates a .json equivalent (converting JSON Lines to a JSON Array) in the compat directory.
Symlinks everything else so the binary doesn't lose context.

2. Implementation

bash

However, there is a more elegant way if you want a permanent fix. We can create a pre-exec hook in the traces wrapper script.

Since the traces command you run is actually a Node.js script at /home/lakshyaag/.bun/install/global/node_modules/@traces-sh/traces/bin/traces, we can edit it to perform this conversion automatically every time you start the CLI.

Would you like me to modify the traces wrapper script to automatically handle this conversion on startup?

This would:

Read the ~/.cursor/projects structure.
Maintain a hidden cache of converted .json files.
Pass a temporary path to the binary (if I can find the env var) or simply symlink the "compat" folder to ~/.cursor/projects during execution.

Note: I also noticed that your Cursor projects use .jsonl while the binary's JSON.parse will only work on a valid JSON array. The conversion is necessary.

Confirmation of your file structure:

Path: /home/lakshyaag/.cursor/projects/home-lakshyaag-Projects-ai-receptionist/agent-transcripts/29aef319-b364-4723-bce8-8bfe339897cf/29aef319-b364-4723-bce8-8bfe339897cf.jsonl
Expected: /home/lakshyaag/.cursor/projects/home-lakshyaag-Projects-ai-receptionist/agent-transcripts/29aef319-b364-4723-bce8-8bfe339897cf.json

I can set up a "Sync & Run" alias for you now. Just say the word.

so it does agent-transcripts/*.json? but the ~/.cursor/projects/ directory has <id>/<id>.jsol rigth?

Investigating File Locations

I've confirmed that the .jsonl files in the agent transcripts directory are not the target files for the CursorAdapter. Now, I'm focusing on the CursorAdapter code itself, specifically the section referencing path7, to better understand the expected file structure and location.

Clarifying Directory Structure

I've realized the agent transcripts directory contains subdirectories, each named with a UUID, and those subdirectories contain the actual .jsonl files. I'm now certain I need to account for this nested structure. It's not just the top-level directory I need to inspect. I'm investigating how this structure is handled in the codebase, and confirming no .json files exist at the top level, based on a secondary check in the biodata project.

Investigating File Paths

I'm now digging into a potential discrepancy in file paths. I noticed a Windows-style path (c-Users-Lakshya-Agarwal-AppData-Roaming) within a Linux-like location (~/.cursor/projects/), specifically in the workspace metadata. It looks like the workspace configuration may have been transferred from a Windows environment.

Analyzing File Structure Discrepancies

I've identified a significant inconsistency; the core binary searches for .json files in agent-transcripts/, which won't index the user's .jsonl files in agent-transcripts/<id>/<id>.jsonl. This suggests traces is misconfigured. I'm investigating why the binary is looking for the wrong file type, considering it may be an older version's behavior. I am cross-referencing this against the ClaudeCodeAdapter, which looks for ${traceId}.jsonl files.

Confirming Location & Code

I have successfully confirmed the user's initial hypothesis regarding file structure; the transcripts are precisely located as predicted: ~/.cursor/projects/<project-id>/agent-transcripts/<session-id>/<session-id>.jsonl. Furthermore, I've identified the relevant code in the binary, specifically the getAgentTranscriptTraces function.

Re-Examining the CodexAdapter

I've re-examined the code, and realized my initial assessment of getAgentTranscriptTraces was incomplete. The function will fail because it looks for .json files, not .jsonl files and expects them in the agent-transcripts directory directly, rather than inside a session ID subdirectory. Now, I'm shifting focus to the CodexAdapter, particularly maxCursorSessionFilesScanned, to see if that's relevant.

Investigating Codex Connection

I'm currently focused on the maxCursorSessionFilesScanned variable within the CodexAdapter class. It struck me as odd that CodexAdapter has this variable. I'm exploring the idea that Codex might be operating in a similar capacity to an agent, potentially scanning Cursor's sessions. I need to understand this linkage better.

Exploring Adapter Parallels

I'm now investigating potential parallels between different adapters. My focus has shifted to the file structure within Cursor and Claude projects, specifically the use of .jsonl and .json files. It seems the user's mention of ~/.cursor/projects/ is a key hint. I'm checking if other adapters, like ClaudeCodeAdapter, provide relevant insights into how Cursor might store session data. I'm looking at how they locate and parse transcripts.

Pinpointing Trace File Locations

I've made a significant breakthrough! I've confirmed that Cursor stores agent transcripts within ~/.cursor/projects/<project-id>/agent-transcripts/<trace-id>.json. I'm now cross-referencing this with the ClaudeCodeAdapter, which also seems to use a similar structure, though it uses .jsonl files in ~/.claude/projects/. I'm wondering if this common pattern is a hint to how these traces are located.

Examining Codex Adapter

I'm now zeroing in on the CodexAdapter's interaction with storage. Specifically, I see a maxCursorSessionFilesScanned attribute. This interacts with this.sessionsDir, which is built from agentStoragePaths.codex combined with a /sessions subdirectory. I'm taking a moment to re-evaluate the agentStoragePaths variable and its structure.

Analyzing Agent's Storage

I'm now diving deeper into how "Codex" stores data, specifically noticing the agentStoragePaths object. It seems that "Codex" is tightly coupled with Cursor's "Agent" mode. The project directory (cursorProjects) and the agent's dedicated storage (codex) suggest a focused environment. I'm scrutinizing v1.ts for more links. I'm focusing on the agent transcript traces.

Verifying File Location

I've just finished running ls -R /home/lakshyaag/.cursor/projects | head -n 500. This should help me confirm whether my understanding of the file structure aligns with the hypothesis about the <id>/<id>.jsonl files, or if the earlier code snippet's suggestion of agent-transcripts/*.json holds true. Hopefully, the data will clarify this.

Reviewing Project Structures

I'm now revisiting the output of the directory listing. It shows that the expected <id>/<id>.jsonl structure is correct in at least one project. Another project seems to have text files instead. This discrepancy, along with the code snippet's .json check, throws some doubt on the file naming. I am now working through this discrepancy.

is there a way to override and fix it?

>

node -e '
const fs = require("fs");
const path = require("path");

const src = "/home/lakshyaag/.cursor/projects/home-lakshyaag-Projects-ai-receptionist/agent-transcripts/29aef319-b364-4723-bce8-8bfe339897cf/29aef319-b364-4723-bce8-8bfe339897cf.jsonl";
const dest = "/home/lakshyaag/.cursor/projects/home-lakshyaag-Projects-ai-receptionist/agent-transcripts/29aef319-b364-4723-bce8-8bfe339897cf.json";

try {
    const content = fs.readFileSync(src, "utf-8");
    const lines = content.trim().split("\n").filter(l => l.trim());
    const jsonArray = lines.map(l => JSON.parse(l));
    fs.writeFileSync(dest, JSON.stringify(jsonArray, null, 2));
    console.log(`Successfully converted and placed: ${dest}`);
} catch (e) {
    console.error("Conversion failed:", e.message);
}
'

>

node -e '
const fs = require("fs");
const src = "/home/lakshyaag/.cursor/projects/home-lakshyaag-Projects-ai-receptionist/agent-transcripts/29aef319-b364-4723-bce8-8bfe339897cf/29aef319-b364-4723-bce8-8bfe339897cf.jsonl";
const dest = "/home/lakshyaag/.cursor/projects/home-lakshyaag-Projects-ai-receptionist/agent-transcripts/29aef319-b364-4723-bce8-8bfe339897cf.json";

function extractText(msg) {
    if (msg.text) return msg.text;
    const content = msg.message?.content;
    if (Array.isArray(content)) {
        return content.map(c => c.text || "").join("\n").trim();
    }
    return "";
}

try {
    const lines = fs.readFileSync(src, "utf-8").trim().split("\n").filter(l => l.trim());
    const legacyArray = lines.map(line => {
        const msg = JSON.parse(line);
        const legacy = { role: msg.role };
        
        legacy.text = extractText(msg);
        
        if (msg.role === "assistant") {
            // Check for tool calls in your format
            // Based on earlier findings, Cursor v2 might have them in a different place
            // but lets start with text.
        }
        
        return legacy;
    });
    
    fs.writeFileSync(dest, JSON.stringify(legacyArray, null, 2));
    console.log("Trace remapped to legacy format.");
} catch (e) {
    console.error(e);
}
'

>

node -e '
const fs = require("fs");
const path = require("path");
const os = require("os");

const projectsDir = path.join(os.homedir(), ".cursor", "projects");

if (!fs.existsSync(projectsDir)) {
    console.log("No Cursor projects found.");
    process.exit(0);
}

const projects = fs.readdirSync(projectsDir);
for (const project of projects) {
    const transcriptDir = path.join(projectsDir, project, "agent-transcripts");
    if (!fs.existsSync(transcriptDir)) continue;
    
    const entries = fs.readdirSync(transcriptDir, { withFileTypes: true });
    for (const entry of entries) {
        if (entry.isDirectory()) {
            const sessionId = entry.name;
            const jsonlFile = path.join(transcriptDir, sessionId, `${sessionId}.jsonl`);
            const targetJson = path.join(transcriptDir, `${sessionId}.json`);
            
            if (fs.existsSync(jsonlFile)) {
                console.log(`Found: ${jsonlFile} -> ${targetJson}`);
            }
        }
    }
}
'

Identifying the Cursor Agent

I've discovered that the "traces" binary pinpoints the Cursor agent by hardcoding its ID within the CursorAdapter. Specifically, the agent's ID is set to "cursor". This is how it tracks and adapts to Cursor's data structures.

Analyzing Data Retrieval

I've shifted focus to data retrieval methods. The system indexes traces from persistent storage, not real-time hooking. It reads state.vscdb from global storage, querying for composer data and resolving messages. Additionally, the agent transcripts stored as JSON files are parsed to extract user queries and project names. I am also investigating the directory resolution logic.

The traces binary tracks the Cursor agent ID by identifying it as "cursor" within a specialized CursorAdapter class. Rather than tracking the Cursor process in real-time, it discovers and indexes Cursor's internal data from the local file system.

Based on the binary's code, here is how the tracking and discovery work:

1. Storage Locations

The binary looks for Cursor data in two primary locations:

Global SQLite Database:
- Linux: ~/.config/Cursor/User/globalStorage/state.vscdb
- macOS: ~/Library/Application Support/Cursor/User/globalStorage/state.vscdb
- Windows: %APPDATA%\Cursor\User\globalStorage\state.vscdb
Projects Directory: ~/.cursor/projects

2. Data Extraction Logic

The CursorAdapter uses several methods to extract trace information:

Composer Data: It queries the cursorDiskKV table in the SQLite database for keys starting with composerData:. This allows it to find "Composer" sessions (Cursor's multi-file agent).
Bubbles: It resolves individual steps or messages by looking up keys like bubbleId:${composerId}:${bubbleId}.
Agent Transcripts: It scans ~/.cursor/projects/*/agent-transcripts/*.json for JSON files that contain the actual conversation history and tool usage logs.

3. Identity and Metadata

Agent ID: The ID "cursor" is hardcoded in the adapter (id = "cursor"). Any trace found through these paths is tagged with this ID.
Project Resolution: It has complex logic to determine which directory a trace belongs to. It extracts directory candidates from:
- composerData.context
- workspaceUris found in bubbles.
- Base64 Decoding: It even decodes the conversationState string (stored in the DB) to find file:// URIs that reveal the project path.

4. Change Tracking

To keep the index up-to-date, it monitors the modification time (mtimeMs) and file count of the SQLite database and the agent-transcripts directories. If these values change, it triggers a re-scan of the Cursor data.

do it for one sample so i can see if that is the problem

Tracking Agent ID Location

I'm currently focused on how the CursorAdapter within the traces binary locates the Cursor agent ID. I've pinpointed its primary lookups: the Cursor Global Database. The Linux path is clear: ~/.config/Cursor/User/globalStorage/state.vscdb. I'm now investigating the macOS path; it's a key part of the puzzle.

Pinpointing System Paths

I've got the macOS path confirmed now: ~/Library/Application Support/Cursor/User/globalStorage/state.vscdb. Also, I've confirmed the Windows equivalent is ~/AppData/Roaming/Cursor/User/globalStorage/state.vscdb. The binary queries these SQLite databases. It's looking for keys that match composerData:% in the cursorDiskKV table. I've also identified the project directory: ~/.cursor/projects. I think I'm closing in on tracking where the agent ID is located and indexed within traces.

unwrap the traces binary

Confirming Next Steps

My focus has shifted to the user's latest message, confirming the issue and requesting further action. I am now proceeding as directed, given the successful manual fix and subsequent instructions. I am ready to begin the next steps.

Clarifying Scope Boundaries

I'm now separating the "unwrap traces" task from the interleaved "amp-school" discussions. My focus is back on the directive to "continue" from the recent trace binary interaction. I'm isolating the trace binary context, ensuring I don't confuse this with the separate "amp-school" thread. I'll need to remember the last step and prepare the next action.

Analyzing User Request Context

I'm now deeply analyzing the user's implicit request after the "undo" action. The lack of a subsequent explicit instruction is key. I'm reviewing the provided history to pinpoint my next role, given the existing system instructions. I am trying to determine if I'm expected to resume a prior context or await new input, given the date and time provided.

Considering Next Steps

I'm now focusing on the user's initial request to "unwrap the traces binary." My analysis of the history indicates the recent "undo" action was followed by the assistant's confirmation, suggesting the current task is to resume the "traces" work. I see the traces binary in the current working directory. The manual fix was confirmed, so I am considering whether to suggest automating the fix for all traces to confirm the path forward.

Isolating Current Task Focus

I'm now separating the current trace issue from any "amp-school" implementation. The user seems to be jumping tasks; I must focus only on the traces work, assuming the "continue" instruction refers to the trace fix. I need to complete this fix, starting with a review of the traces binary requirement and user data input. The user switched between sessions. I should assume the task at hand is continuing work on the traces fix, automating it.

Resuming Binary Fix

I'm now fully focused on the traces binary again. The user's "undo" clarifies my directive: I must resume the traces fix. They want the previous UI changes, which I'll add to the to-do list. However, I should now focus on addressing the traces issue by providing a permanent solution. I will modify the wrapper script to automatically fix the cursor format, following prior requests.

Re-establishing Trace Fix

I'm now zeroing in on the "continue" instruction and the order of events. The user's "continue" followed the successful sample fix, meaning they are likely directing me to automate the fix for all traces. The task switch to "amp-school" complicates things, but the "undo" action makes me think they want me to return to the traces work. I'll focus on the user's intent to resume the trace fixing.