QuickBuild Agent Tools

About

A hosted toolset for agents on a Cloudflare Worker. Free tools reduce LLM context size: URL to Markdown, JSON trimming, log compression, token estimation, page outlines and a quick website check. Paid tools cover site audits, page metadata, summarizing, translation, image generation, screenshots, text to speech, embeddings, reranking, LLM chat, FX rates, crypto prices and Base and Solana address lookups.

It runs as a remote streamable-HTTP endpoint. No sign-in or API key is needed. Free tools have per-IP hourly limits. Paid tools cost a fixed USDC amount per call on Base, paid with x402; failed calls are not charged.

What you can do

• Convert a public web page to compact Markdown
• Trim large JSON and compress logs to save tokens
• Estimate token counts and outline pages
• Audit websites for broken links, meta tags and security headers
• Summarize, translate, and screenshot web pages (paid)
• Look up Base wallets, tokens, transactions and gas (paid)
• Generate images, speech, embeddings and rerank documents (paid)

Tools 40

• launchcheck_fullRead-only

  Paid full pre-launch report for a URL with links, social card and screenshots.

• website_auditRead-only

  Paid audit of up to 3 pages: meta, security headers, links, leaked secrets in JS.

• page_metadataRead-only

  Paid structured metadata and link preview for one page.

• domain_intelRead-only

  Domain intel: DNS, SPF/DMARC, RDAP, email-security grade

• x402_preflightRead-only

  x402 pre-flight check (will this URL accept payment, what it costs)

• injection_checkRead-only

  Prompt-injection check (rule/pattern filter, no LLM) for text or a page

• summarizeRead-only

  Paid JSON brief of a URL or text made by Llama 3.3 70B.

• translateRead-only

  Paid LLM translation of text or a web page.

• generate_imageRead-only

  Paid 1024x1024 image generation with FLUX.1 schnell.

• screenshot_urlRead-only

  Paid headless Chrome screenshot of a public page.

• text_to_speechRead-only

  Paid text to WAV speech in six languages.

• base_gas_priceRead-only

  Paid live gas snapshot for Base mainnet.

Read from the live server on 6 Nov 2026. Read-only, Writes and Can delete are hints the server declares; your client decides whether to ask before running a tool.

Example prompts

• Convert https://example.com/docs to compact Markdown and tell me how many tokens it saves

• Compress this log output to its errors and unique lines

• Run a free site check on https://example.com

• Trim this JSON response down to the keys id and name

Set up

Every client connects to quickbuild.quynguyenbac.workers.dev. Pick yours; the page remembers your choice.

claude mcp add --transport http quickbuild-agent-tools https://quickbuild.quynguyenbac.workers.dev/mcp

https://quickbuild.quynguyenbac.workers.dev/mcp

{
  "mcpServers": {
    "quickbuild-agent-tools": {
      "url": "https://quickbuild.quynguyenbac.workers.dev/mcp"
    }
  }
}

code --add-mcp '{"name":"quickbuild-agent-tools","type":"http","url":"https://quickbuild.quynguyenbac.workers.dev/mcp"}'

{
  "servers": {
    "quickbuild-agent-tools": {
      "type": "http",
      "url": "https://quickbuild.quynguyenbac.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "quickbuild-agent-tools": {
      "serverUrl": "https://quickbuild.quynguyenbac.workers.dev/mcp"
    }
  }
}

codex mcp add quickbuild-agent-tools --url https://quickbuild.quynguyenbac.workers.dev/mcp

[mcp_servers.quickbuild-agent-tools]
url = "https://quickbuild.quynguyenbac.workers.dev/mcp"

gemini mcp add --transport http quickbuild-agent-tools https://quickbuild.quynguyenbac.workers.dev/mcp

{
  "mcpServers": {
    "quickbuild-agent-tools": {
      "type": "http",
      "url": "https://quickbuild.quynguyenbac.workers.dev/mcp"
    }
  }
}

Embed

Show QuickBuild Agent Tools in a README or on your site. Each embed links to this page, uses the server’s own URL, and sets no cookies. How embeds work

The card, the iframe and the JSON are in English. Add ?lang=it, fr, de or es to their address for another language.

README badge Website card iframe JSON AI prompt

README badge

Markdown

[![QuickBuild Agent Tools on mcp.tc](https://mcp.tc/i/quickbuild-agent-tools/badge.svg)](https://mcp.tc/i/quickbuild-agent-tools)

HTML

<a href="https://mcp.tc/i/quickbuild-agent-tools"><img src="https://mcp.tc/i/quickbuild-agent-tools/badge.svg" alt="QuickBuild Agent Tools on mcp.tc" height="20"></a>

It follows the reader’s light or dark mode. Add ?theme=light or ?theme=dark to fix it, or ?style=compact to show the mark without the word.

Website card

HTML

<script src="https://mcp.tc/w/quickbuild-agent-tools.js" async></script>

The card appears where the tag is. Add data-theme="dark" or data-size="compact" to the tag to change it. The file holds everything it needs, so it makes no other requests and sets no cookies.

iframe

HTML

<iframe src="https://mcp.tc/embed/quickbuild-agent-tools" title="QuickBuild Agent Tools on mcp.tc" width="420" height="200" loading="lazy" allow="clipboard-write" style="border:0;border-radius:8px;max-width:100%"></iframe>

Use it on pages that don’t allow scripts. Add ?theme=light or ?theme=dark to the address to fix the colors.

JSON

The listing as data for your own pages and tools: name, tagline, the server’s own URL, tools and the “Add to” links. Any site can read it (CORS is open).

https://mcp.tc/i/quickbuild-agent-tools.json

What each field means

AI prompt

Paste this into an AI coding assistant, such as Claude Code or Cursor, and it adds the QuickBuild Agent Tools card to your site.

Markdown

Add the mcp.tc card for QuickBuild Agent Tools, an MCP server, to my website. It is one static script: no build step, no package to install, no cookies.

Put this tag where the card should appear. The card renders right before it:

```html
<script src="https://mcp.tc/w/quickbuild-agent-tools.js" async></script>
```

To show the card somewhere else, put this placeholder there and load the same script once, for example before `</body>`. Keep the link inside: visitors without JavaScript see it.

```html
<div data-mcptc="quickbuild-agent-tools"><a href="https://mcp.tc/i/quickbuild-agent-tools">QuickBuild Agent Tools on mcp.tc</a></div>
```

Options:
- `data-theme="light"` or `"dark"` on the tag or the placeholder fixes the colors. Without it, the card follows the visitor’s light or dark mode.
- `data-size="compact"` gives a smaller card without the tagline.
- The CSS variable `--mcptc-max-width` on the placeholder or a parent sets the width (default `520px`).
- `?lang=` on the script URL sets the card’s language: `en`, `it`, `fr`, `de` or `es`.

If the site has a Content Security Policy, allow `script-src https://mcp.tc` and `img-src data:` (the icon is inline).

For a README or other Markdown docs, use the badge instead:

```markdown
[![QuickBuild Agent Tools on mcp.tc](https://mcp.tc/i/quickbuild-agent-tools/badge.svg)](https://mcp.tc/i/quickbuild-agent-tools)
```

Reference: https://mcp.tc/embed

Change history

We read this server’s tool list every 3 hours and record what changes. Last read 7 Nov 2026, 14:43 UTC.

1. 3 Nov 2026, 17:49 UTC, Automatic check

   1 tool added.

   Details, 3 Nov 2026, 17:49 UTC

   Added 1

   • injection_checkRead-only

     [PAID $0.003 USDC per call via x402 on Base; errors are free] For developers of AI agents that read untrusted web pages, emails or tool outputs. A RULE/PATTERN filter (regex heuristics, no LLM, no model-quality promise): flags instruction overrides ("ignore previous instructions"), role/system impersonation (<|im_start|>, [INST], "system:"), exfiltration requests (send keys/secrets to a URL), hidden text (zero-width/bidi/Unicode-tag chars, HTML comments, display:none / white text, base64 blobs that decode to instructions), tool-call / shell command injection, markdown image/link exfil, and overrides in EN/ES/FR/DE/ZH/JA/RU. POST JSON {"text"} (max 32 KB) or GET ?text= for short text, or {"url"} to fetch one public https page (port 443, public hosts only, max 2 redirects, 64 KB read, 4 s timeout). Returns verdict, score 0-100, findings (category, snippet <= 80 chars with secrets redacted, position) and an honest `limits` note. Paraphrased or novel attacks can be missed; not a guarantee…

2. 2 Nov 2026, 20:52 UTC, Automatic check

   1 tool added.

   Details, 2 Nov 2026, 20:52 UTC

   Added 1

   • x402_preflightRead-only

     [PAID $0.005 USDC per call via x402 on Base; errors are free] For developers of buyer agents. Makes ONE unpaid request (GET, POST fallback if GET is not allowed; 4 s timeout; max 2 redirects; 64 KB read) to the target and parses its HTTP 402 challenge (v2 PAYMENT-REQUIRED base64 header or v1 JSON body). Returns normalised accepts[] (scheme, CAIP-2 network, asset, amount in USD, payTo), pass/fail checks (valid challenge, supported mainnet network, USDC asset, parseable amount within a sanity cap, well-formed payTo, latency, TLS, Bazaar metadata, CORS), a verdict with plain reasons, latency, and the measured /ai-search score + sample size when the host is in our index. NEVER sends a payment or payment header. https + public hostnames + port 443 only; IPs, localhost, .local/.internal and credentials refused (400). Unreachable/timeout target = 502/504 JSON with verdict do_not_pay, never charged.

3. 2 Nov 2026, 17:44 UTC, Automatic check

   1 tool added.

   Details, 2 Nov 2026, 17:44 UTC

   Added 1

   • domain_intelRead-only

     [PAID $0.003 USDC per call via x402 on Base; errors are free] One call domain lookup for agents: DNS records A, AAAA, MX, NS, TXT, CAA (Cloudflare DoH), SPF parsed (all qualifier, lookup count, issues), DMARC parsed (policy, pct, rua, issues), RDAP summary (registrar, created, expires, updated, status, DNSSEC via rdap.org) and a 0-100 email-security score with letter grade and reasons. Param name = public domain (example.com; URLs are reduced to their host). IPs/internal names refused (400), NXDOMAIN 404, DNS upstream down 502: never charged.

4. 2 Nov 2026, 05:48 UTC, Automatic check

   2 tools added and 5 tools changed.

   Details, 2 Nov 2026, 05:48 UTC

   Added 2

   • base_snapshotRead-only

     [PAID $0.003 USDC per call via x402 on Base; errors are free] Bundle for agents that check Base before acting: everything in /api/base/gas (base fee, priority-fee tiers, trend, congestion, USD cost of ETH transfer / ERC-20 transfer / swap incl. L1 data fee) + ETH/USD from Chainlink on Base, Coinbase spot and CoinGecko (median price, max-min deviationPct, 24h change) + network status: ok/degraded/stalled/sequencer-down from head block age, safe and finalized lag in blocks, and the Chainlink L2 sequencer uptime feed. One-line `summary` included. No params. Cached 5 s. Null = source unavailable (never invented). Errors are never charged.

   • base_token_batchRead-only

     [PAID $0.01 USDC per call via x402 on Base; errors are free] Batch version of /api/base/token for Base mainnet (chain 8453): pass up to 10 comma-separated contract addresses in `addresses` and get, per token, contract/EOA check, ERC-20 name/symbol/decimals/totalSupply, proxy implementation, owner() and renounced flag, well-known flag, and `market` from DexScreener (USD price, total liquidity, 24h volume/change, FDV, top pair; market=0 to skip). A bad token yields a per-item error instead of failing the call. Fixed $0.01 per call (vs $0.002 x 10). Metadata cached 1 h, market 60 s. Defaults to USDC, WETH, AERO. Invalid input = 400, never charged.

   Changed 5

   • base_gas_pricedescription
     Before

     [PAID $0.001 USDC per call via x402 on Base; errors are free] Live gas snapshot for Base mainnet (chain 8453) read from public Base RPC: latest block number/time/utilization, base fee, eth_gasPrice, eth_maxPriorityFeePerGas, the last 10 blocks of base fees, slow/standard/fast EIP-1559 fee suggestions (10th/50th/90th percentile tips) in gwei and wei, and the estimated total cost (L2 execution + OP Stack L1 data-fee upper bound) of an ETH transfer, an ERC-20 transfer and a swap in ETH and USD (Chainlink ETH/USD on Base). No params. Cached 4 s. Errors are never charged.

     After

     [PAID $0.001 USDC per call via x402 on Base; errors are free] Live gas snapshot for Base mainnet (chain 8453) read from public Base RPC: latest block number/time/utilization, base fee, eth_gasPrice, eth_maxPriorityFeePerGas, the last 10 blocks of base fees, slow/standard/fast EIP-1559 fee suggestions (10th/50th/90th percentile tips) in gwei and wei, and the estimated total cost (L2 execution + OP Stack L1 data-fee upper bound) of an ETH transfer, an ERC-20 transfer and a swap in ETH and USD (Chainlink ETH/USD on Base), plus a one-line `summary`, `baseFeeTrend` (rising/flat/falling vs 10-block average) and `congestion` (low/normal/high). No params. Cached 5 s, typically answers in well under 500 ms. Need ETH price + network health too? /api/base/snapshot ($0.003). Errors are never charged.

   • base_token_infodescription and input schema
     Before

     [PAID $0.002 USDC per call via x402 on Base; errors are free] Inspect a token or any address on Base mainnet: contract vs EOA (incl. EIP-7702 delegation), bytecode size, ERC-20 name/symbol/decimals/totalSupply (raw and formatted; bytes32 symbols handled), proxy implementation (EIP-1967, beacon, ZeppelinOS/FiatToken), whether it is a well-known Base token (guards against spoofed symbols), and optionally the balance of `holder`. Read live from public Base RPC; metadata cached 1 h. All params optional: defaults to USDC on Base. Invalid input = 400, never charged.

     After

     [PAID $0.002 USDC per call via x402 on Base; errors are free] Inspect a token or any address on Base mainnet: contract vs EOA (incl. EIP-7702 delegation), bytecode size, ERC-20 name/symbol/decimals/totalSupply (raw and formatted; bytes32 symbols handled), proxy implementation (EIP-1967, beacon, ZeppelinOS/FiatToken), owner() and whether it is renounced, whether it is a well-known Base token (guards against spoofed symbols), `market` (DexScreener: USD price from the deepest Base pair, total liquidity, 24h volume and change, FDV, top pair; cached 60 s; market=0 to skip), and optionally the balance of `holder`. Read live from public Base RPC; metadata cached 1 h. Many tokens? /api/base/token-batch (10 per call). All params optional: defaults to USDC on Base. Invalid input = 400, never charged.

     • New parameters: market
   • base_wallet_balancesdescription
     Before

     [PAID $0.002 USDC per call via x402 on Base; errors are free] Balances of one address on Base mainnet in a single call: native ETH, the well-known tokens USDC, USDT, USDbC, DAI, WETH, cbETH, wstETH, AERO (non-zero only, or all with includeZero=true), plus up to 10 extra ERC-20 contracts you pass in `tokens` (symbol/name/decimals read on-chain). Also nonce, account type (EOA, EIP-7702 delegated EOA, or contract) and a USD total for ETH/WETH (Chainlink) and stablecoins. Read live from public Base RPC via Multicall3; cached 10 s. All params optional: defaults to a well-known public address. Invalid input = 400, never charged.

     After

     [PAID $0.002 USDC per call via x402 on Base; errors are free] Balances of one address on Base mainnet in a single call: native ETH, the well-known tokens USDC, USDT, USDbC, DAI, WETH, cbETH, wstETH, AERO (non-zero only, or all with includeZero=true), plus up to 10 extra ERC-20 contracts you pass in `tokens` (symbol/name/decimals read on-chain). Also an always-present `usdc` block (balance + USD, also when 0), `txCount` (= nonce, transactions sent), account type (EOA, EIP-7702 delegated EOA, or contract) and a USD total for ETH/WETH (Chainlink) and stablecoins. Read live from public Base RPC via Multicall3; cached 10 s. All params optional: defaults to a well-known public address. Invalid input = 400, never charged.

   • crypto_pricedescription
     Before

     [PAID $0.001 USDC per call via x402 on Base; errors are free] Live crypto prices for up to 25 coins per call: pass tickers in `symbols` (BTC,ETH,SOL,AERO,...; common tickers built in, others resolved by CoinGecko search to the largest coin with that ticker), CoinGecko `ids`, or one token `address` + `chain` (base default; ethereum, arbitrum, optimism, polygon, bsc, avalanche, solana). Returns price, market cap, 24h volume and 24h % change in each `vs` currency (usd default; up to 5, e.g. usd,eur,btc) plus last-updated time. Data: CoinGecko public API, cached 30 s; falls back to Coinbase spot rates (price only) if CoinGecko is unavailable. All params optional: with none it returns BTC and ETH in USD. Unknown coins = 404, invalid input = 400, never charged.

     After

     [PAID $0.001 USDC per call via x402 on Base; errors are free] Live crypto prices for up to 25 coins per call: pass tickers in `symbols` (BTC,ETH,SOL,AERO,...; common tickers built in, others resolved by CoinGecko search to the largest coin with that ticker), CoinGecko `ids`, or one token `address` + `chain` (base default; ethereum, arbitrum, optimism, polygon, bsc, avalanche, solana). Returns price, market cap, 24h volume and 24h % change in each `vs` currency (usd default; up to 5, e.g. usd,eur,btc) plus last-updated time. Each USD price is cross-checked against Coinbase spot: `sources` {coingecko, coinbase} and `deviationPct` per coin, `maxDeviationPct` overall. Data: CoinGecko public API, cached 15 s; falls back to Coinbase spot rates (price only) if CoinGecko is unavailable. All params optional: with none it returns BTC and ETH in USD. Unknown coins = 404, invalid input = 400, never charged.

   • fx_ratedescription
     Before

     [PAID $0.002 USDC per call via x402 on Base; errors are free] Foreign-exchange rates from one base currency (`from`, default USD) to a list of currencies (`to`, comma-separated, or "all"; default 14 majors incl. EUR, GBP, JPY, CNY, INR, KRW, VND), with `amount` converted. Live mode uses Coinbase public exchange rates (updated about every minute, 160+ ISO 4217 currencies plus XAU/XAG), falling back to exchangerate-api daily rates. With `date=YYYY-MM-DD` it returns the ECB reference rates for that day (Frankfurter, ~30 major currencies, back to 1999-01-04). All params optional: with none it returns USD to 14 major currencies. Invalid codes = 400, never charged.

     After

     [PAID $0.002 USDC per call via x402 on Base; errors are free] Foreign-exchange rates from one base currency (`from`, default USD) to a list of currencies (`to`, comma-separated, or "all"; default 14 majors incl. EUR, GBP, JPY, CNY, INR, KRW, VND), with `amount` converted. Live mode uses Coinbase public exchange rates (cached 15 s, updated about every minute, 160+ ISO 4217 currencies plus XAU/XAG), falling back to exchangerate-api daily rates. With `date=YYYY-MM-DD` it returns the ECB reference rates for that day (Frankfurter, ~30 major currencies, back to 1999-01-04). All params optional: with none it returns USD to 14 major currencies. Invalid codes = 400, never charged.

5. 31 Oct 2026, 17:24 UTC, Automatic check

   Tracking started: 35 tools.

FAQ