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@recost-dev

Recost

README.md

ReCost

Know what your APIs cost before they cost you. Website · Extension · API · Docs

What is ReCost?

ReCost shows you exactly what your APIs cost — before production does.

  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale

How it works

Code → Scan → Analyze → Optimize → Monitor
  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension

Stack

RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)

Repos

  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion

Quick start

Scan your code

Install the VS Code extension, open a project, and click Scan. Or build from source:

cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix

Track production usage

Node.js

npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});

Express and Fastify middleware adapters are included.

Python

pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))

What gets tracked

The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.

Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.

AI Chat

The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.

Why ReCost?

APIs (especially AI) make costs unpredictable.

ReCost makes them:

  • visible
  • predictable
  • optimizable

Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

Pinned Loading

  1. extensionextensionPublic

    VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript 9

Repositories

Showing 7 of 7 repositories

People

This organization has no public members. You must be a member to see who’s a part of this organization.

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Recost · GitHub
Skip to content
@recost-dev

Recost

README.md
ReCost
Know what your APIs cost before they cost you.
Website · Extension · API · Docs
What is ReCost?
ReCost shows you exactly what your APIs cost — before production does.
  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale
How it works
Code → Scan → Analyze → Optimize → Monitor

  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension
Stack
RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)
Repos
  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion
Quick start
Scan your code
Install the VS Code extension, open a project, and click Scan. Or build from source:
cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix
Track production usage
Node.js
npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});
Express and Fastify middleware adapters are included.
Python
pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))
What gets tracked
The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.
Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.
AI Chat
The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.
Why ReCost?
APIs (especially AI) make costs unpredictable.
ReCost makes them:
  • visible
  • predictable
  • optimizable
Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

Pinned
Loading
  1. extensionextensionPublic
    
VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript
9


Repositories

Showing 7 of 7 repositories
People

This organization has no public members. You must be a member to see who’s a part of this organization.

Top languages
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Recost · GitHub
Skip to content
@recost-dev

Recost

README.md
ReCost
Know what your APIs cost before they cost you.
Website · Extension · API · Docs
What is ReCost?
ReCost shows you exactly what your APIs cost — before production does.
  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale
How it works
Code → Scan → Analyze → Optimize → Monitor

  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension
Stack
RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)
Repos
  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion
Quick start
Scan your code
Install the VS Code extension, open a project, and click Scan. Or build from source:
cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix
Track production usage
Node.js
npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});
Express and Fastify middleware adapters are included.
Python
pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))
What gets tracked
The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.
Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.
AI Chat
The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.
Why ReCost?
APIs (especially AI) make costs unpredictable.
ReCost makes them:
  • visible
  • predictable
  • optimizable
Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

Pinned
Loading
  1. extensionextensionPublic
    
VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript
9


Repositories

Showing 7 of 7 repositories
People

This organization has no public members. You must be a member to see who’s a part of this organization.

Top languages
Loading…
Most used topics
Loading…

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Recost · GitHub
Skip to content
@recost-dev

Recost

README.md
ReCost
Know what your APIs cost before they cost you.
Website · Extension · API · Docs
What is ReCost?
ReCost shows you exactly what your APIs cost — before production does.
  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale
How it works
Code → Scan → Analyze → Optimize → Monitor

  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension
Stack
RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)
Repos
  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion
Quick start
Scan your code
Install the VS Code extension, open a project, and click Scan. Or build from source:
cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix
Track production usage
Node.js
npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});
Express and Fastify middleware adapters are included.
Python
pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))
What gets tracked
The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.
Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.
AI Chat
The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.
Why ReCost?
APIs (especially AI) make costs unpredictable.
ReCost makes them:
  • visible
  • predictable
  • optimizable
Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

Pinned
Loading
  1. extensionextensionPublic
    
VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript
9


Repositories

Showing 7 of 7 repositories
People

This organization has no public members. You must be a member to see who’s a part of this organization.

Top languages
Loading…
Most used topics
Loading…

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Recost · GitHub
Skip to content
@recost-dev

Recost

README.md
ReCost
Know what your APIs cost before they cost you.
Website · Extension · API · Docs
What is ReCost?
ReCost shows you exactly what your APIs cost — before production does.
  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale
How it works
Code → Scan → Analyze → Optimize → Monitor

  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension
Stack
RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)
Repos
  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion
Quick start
Scan your code
Install the VS Code extension, open a project, and click Scan. Or build from source:
cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix
Track production usage
Node.js
npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});
Express and Fastify middleware adapters are included.
Python
pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))
What gets tracked
The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.
Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.
AI Chat
The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.
Why ReCost?
APIs (especially AI) make costs unpredictable.
ReCost makes them:
  • visible
  • predictable
  • optimizable
Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

Pinned
Loading
  1. extensionextensionPublic
    
VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript
9


Repositories

Showing 7 of 7 repositories
People

This organization has no public members. You must be a member to see who’s a part of this organization.

Top languages
Loading…
Most used topics
Loading…

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Recost · GitHub
Skip to content
@recost-dev

Recost

README.md
ReCost
Know what your APIs cost before they cost you.
Website · Extension · API · Docs
What is ReCost?
ReCost shows you exactly what your APIs cost — before production does.
  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale
How it works
Code → Scan → Analyze → Optimize → Monitor

  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension
Stack
RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)
Repos
  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion
Quick start
Scan your code
Install the VS Code extension, open a project, and click Scan. Or build from source:
cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix
Track production usage
Node.js
npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});
Express and Fastify middleware adapters are included.
Python
pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))
What gets tracked
The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.
Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.
AI Chat
The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.
Why ReCost?
APIs (especially AI) make costs unpredictable.
ReCost makes them:
  • visible
  • predictable
  • optimizable
Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

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VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
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function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Recost · GitHub
Skip to content
@recost-dev

Recost

README.md
ReCost
Know what your APIs cost before they cost you.
Website · Extension · API · Docs
What is ReCost?
ReCost shows you exactly what your APIs cost — before production does.
  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale
How it works
Code → Scan → Analyze → Optimize → Monitor

  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension
Stack
RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)
Repos
  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion
Quick start
Scan your code
Install the VS Code extension, open a project, and click Scan. Or build from source:
cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix
Track production usage
Node.js
npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});
Express and Fastify middleware adapters are included.
Python
pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))
What gets tracked
The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.
Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.
AI Chat
The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.
Why ReCost?
APIs (especially AI) make costs unpredictable.
ReCost makes them:
  • visible
  • predictable
  • optimizable
Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

Pinned
Loading
  1. extensionextensionPublic
    
VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript
9


Repositories

Showing 7 of 7 repositories
People

This organization has no public members. You must be a member to see who’s a part of this organization.

Top languages
Loading…
Most used topics
Loading…

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Recost · GitHub
Skip to content
@recost-dev

Recost

README.md
ReCost
Know what your APIs cost before they cost you.
Website · Extension · API · Docs
What is ReCost?
ReCost shows you exactly what your APIs cost — before production does.
  • Scan your codebase → detect API usage
  • Estimate cost per endpoint → real numbers
  • Catch inefficiencies → N+1, loops, missing cache
  • Track live usage → runtime telemetry
  • Simulate spend → before you scale
How it works
Code → Scan → Analyze → Optimize → Monitor

  • Scan — VS Code extension parses your code (AST + patterns) using web-tree-sitter for JS/TS/Python
  • Analyze — Edge API computes cost, risk, sustainability stats, and suggestions
  • Optimize — Dashboard + extension show savings opportunities, Cost Simulator projects spend at scale
  • Monitor — SDKs intercept real API calls at runtime and ship telemetry to the dashboard or extension
Stack
RepoTech
extensionTypeScript, React 18, web-tree-sitter (WASM), Vite, TanStack Query v5, Tailwind v4, Radix UI
apiCloudflare Workers, Hono, D1 (SQLite), KV, TypeScript
webReact 19, React Router v7, Vite, TanStack Query v5, Tailwind v4, shadcn/ui, Framer Motion, Recharts
middleware-nodeTypeScript, Node.js ≥ 18, patches fetch/http/https, Express + Fastify adapters
middleware-pythonPython ≥ 3.9 (no core deps), patches urllib3/httpx/aiohttp, FastAPI + Flask adapters
automated-parserNode.js, GitHub Actions (daily cron)
Repos
  • extension — VS Code extension: code scanning, AI chat, Cost Simulator sidebar
  • api — cost engine, analysis, auth, telemetry ingest
  • web — dashboard (projects, live telemetry, analytics, docs)
  • middleware-node — Node.js SDK: runtime HTTP interception
  • middleware-python — Python SDK: runtime HTTP interception
  • automated-parser — scheduled GitHub repo ingestion
Quick start
Scan your code
Install the VS Code extension, open a project, and click Scan. Or build from source:
cd extension
bash scripts/build-vsix.sh
code --install-extension recost-api-analyzer-*.vsix
Track production usage
Node.js
npm install @recost-dev/node
import{init}from"@recost-dev/node";// Local mode — streams to VS Code extension, no key neededinit();// Cloud mode — sends to recost.dev dashboardinit({apiKey: process.env.RECOST_API_KEY,projectId: process.env.RECOST_PROJECT_ID,});
Express and Fastify middleware adapters are included.
Python
pip install recost
# pip install recost[fastapi] # FastAPI/Starlette middleware# pip install recost[flask] # Flask extension
fromrecostimportinit# Local mode — streams to VS Code extension, no key neededinit()
# Cloud mode — sends to recost.dev dashboardfromrecostimportinit, RecostConfiginit(RecostConfig(
api_key=os.environ["RECOST_API_KEY"],
project_id=os.environ["RECOST_PROJECT_ID"],
))
What gets tracked
The SDKs capture metadata only — URL (query params stripped), method, status, latency, byte sizes, matched provider, and estimated cost. Headers and body content are never captured.
Supported providers out of the box: OpenAI, Anthropic, Stripe, Twilio, SendGrid, Pinecone, AWS, Google Cloud, GitHub, and more.
AI Chat
The extension includes a built-in AI chat powered by ReCost AI (free, no key required). You can also bring your own key for OpenAI, Anthropic, Gemini, xAI, Cohere, Mistral, or Perplexity.
Why ReCost?
APIs (especially AI) make costs unpredictable.
ReCost makes them:
  • visible
  • predictable
  • optimizable
Built by Andres Lopez, Aslan Wang, and Donggyu Yoon.

Pinned
Loading
  1. extensionextensionPublic
    
VS Code extension that parses your codebase for API usage patterns and surfaces cost and optimization insights in your editor.

    TypeScript
9


Repositories

Showing 7 of 7 repositories
People

This organization has no public members. You must be a member to see who’s a part of this organization.

Top languages
Loading…
Most used topics
Loading…