har-based http traffic capture and session recording
Automates browser-based HTTP traffic capture using Playwright-controlled Chromium, recording all network requests/responses in HAR (HTTP Archive) format alongside authentication cookies and session tokens. The system spawns a headless browser instance, allows manual user interaction including 2FA flows, and persists complete network logs with metadata for downstream LLM analysis. This approach captures real API calls as they occur in production web applications without requiring API documentation.
Unique: Uses Playwright for cross-platform browser automation with native HAR export, capturing complete HTTP traffic including headers, cookies, and response bodies in a standardized format that feeds directly into LLM-powered dependency analysis — avoiding manual API documentation
vs alternatives: More complete than browser DevTools export because it automates capture and includes session state; more reliable than curl/Postman recording because it handles dynamic content and JavaScript-driven requests
llm-powered target api endpoint identification from traffic logs
Uses semantic LLM analysis to identify which HTTP request in a captured HAR file accomplishes the user's stated goal, without requiring prior knowledge of API structure. The system sends the HAR entries and a natural language prompt (e.g., 'create a new task') to an LLM, which analyzes request patterns, response structures, and semantics to pinpoint the primary action endpoint. This enables users to specify intent in plain English rather than manually locating the correct API call.
Unique: Applies semantic LLM reasoning directly to raw HTTP traffic rather than requiring structured API specs, enabling identification of endpoints in undocumented APIs by analyzing request/response patterns and user intent — a capability unavailable in traditional API discovery tools
vs alternatives: More flexible than regex-based endpoint detection because it understands semantic intent; more practical than manual inspection because it automates the discovery process at scale
authentication and session state preservation across request sequences
Captures and preserves authentication cookies, session tokens, and headers from the initial HAR capture, then applies them to generated code to maintain authenticated sessions across multi-step request sequences. Handles cookie expiration, token refresh patterns (when detectable from HAR), and header-based authentication (Bearer tokens, API keys). Enables generated code to execute without requiring users to manually manage authentication state.
Unique: Automatically extracts and applies authentication from captured HAR sessions to generated code, preserving session state across multi-step workflows without requiring manual credential management — enabling seamless authenticated integrations
vs alternatives: More convenient than manual auth handling because it extracts credentials from capture; more secure than hardcoding credentials because it uses captured session tokens
request body and parameter template generation with variable substitution
Generates request body templates and parameter specifications for each request node in the dependency graph, identifying which fields are static vs dynamic and creating variable placeholders for dynamic values. Produces Python code with f-strings or format() calls for parameter substitution, enabling generated functions to accept dynamic values as arguments and construct proper request bodies. Handles JSON, form-encoded, and multipart request bodies.
Unique: Generates parameterized request templates with automatic variable substitution from identified dynamic fields, producing reusable Python functions that accept parameters and construct proper request bodies — enabling flexible API integrations
vs alternatives: More flexible than hardcoded requests because it supports parameter substitution; more accurate than manual templates because it infers structure from captured requests
response parsing and data extraction for downstream request dependencies
Analyzes HTTP response bodies from captured requests to identify and extract values that are used as parameters in downstream requests. Handles JSON, HTML, and form-encoded responses, using LLM semantic analysis to locate relevant data fields (IDs, tokens, URLs) within responses. Generates extraction code (JSON path, regex, or parsing logic) that can be applied to live API responses during execution.
Unique: Uses LLM semantic analysis to identify and extract relevant data fields from response bodies, generating reusable extraction code that works across different response instances — enabling automatic data passing in multi-step workflows
vs alternatives: More flexible than hardcoded extraction because it adapts to response structure; more accurate than regex-based extraction because it understands semantic meaning of fields
dynamic parameter detection and extraction from http requests
Identifies which URL parameters, headers, request body fields, and cookies contain dynamic values (non-static data that varies between requests) using LLM semantic analysis. The system analyzes request patterns across the HAR file to detect fields that change between calls (e.g., user IDs, timestamps, CSRF tokens, pagination cursors) and marks them as dependencies requiring upstream resolution. This enables the system to distinguish between static configuration and values that must be sourced from other API responses.
Unique: Uses LLM semantic analysis to detect dynamic parameters by analyzing request patterns across the HAR file, rather than relying on static heuristics or regex patterns — enabling detection of complex dynamic values like UUIDs, timestamps, and opaque tokens that vary in format
vs alternatives: More accurate than simple string comparison because it understands semantic meaning of fields; more comprehensive than manual inspection because it analyzes all requests systematically
recursive dependency graph construction via backward har tracing
Builds a directed acyclic graph (DAG) of API request dependencies by recursively tracing dynamic values backward through the HAR file to their source responses. For each dynamic parameter identified in the target request, the system searches earlier requests' responses to find where that value originated, then repeats the process for those upstream requests until reaching base requests that only require authentication cookies. Uses NetworkX for graph representation and topological ordering, enabling visualization and execution planning of the complete request chain.
Unique: Implements recursive backward tracing through HAR response bodies using LLM semantic matching to identify value origins, constructing a complete dependency DAG without requiring API documentation or manual specification — enabling automatic workflow sequencing for undocumented APIs
vs alternatives: More comprehensive than simple request ordering because it identifies actual data dependencies; more automated than manual workflow design because it derives the graph from captured traffic
llm-driven python code generation from dependency graphs
Converts the constructed dependency DAG into executable Python code by generating a function for each graph node with proper parameter passing and sequencing. The system uses LLM analysis to infer function signatures, handle authentication, manage session state, and implement error handling based on observed request patterns. Generated code includes type hints, docstrings, and proper async/await patterns where applicable, producing production-ready integration code that replicates the captured workflow.
Unique: Generates Python code directly from captured HTTP traffic and dependency graphs using LLM semantic understanding, producing complete multi-function integration code with proper sequencing and parameter passing — eliminating manual coding of multi-step API workflows
vs alternatives: More complete than code snippets because it generates full executable workflows; more accurate than template-based generation because it uses LLM to understand request semantics and dependencies
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