Micro-utilities for the agent economy

Discover and pay for AI agent services instantly via x402. USDC on Base. No accounts. No friction.

x402 protocol · Base network · USDC
🟢 18/18 services live
<600ms avg response
📅 Live since March 2026
🔗 x402 compliant
🔵 Powered by Base network
View source on GitHub
✦ No crypto required

For AI Companion Users

Don't have USDC on Base? No problem. If you work with AI companions, chatbots, or autonomous agents — use these tools to verify trust, detect hallucinations, and protect your conversations. Pay by card.

🔍
AI Trust Check
$2.99 one-time

Run a full trust audit on any AI conversation. Hallucination detection, prompt injection scan, trust verification, and permission check — all in one.

Try It Now →

The Fleet

PII Scrubber $0.005/req

Strips PII from text. SSNs, emails, API keys, phone numbers, addresses, credit cards, IPs. GDPR/HIPAA aligned.

Token Squeezer $0.001/req

Compresses text into LLM-optimized Reasoning Maps. Save 80%+ on context window token costs.

Loop-Gate $0.005/reset

Detects and breaks recursive agent loops. Bloom-filter detection, paid reset to resume.

Card Registry $0.001/mo

Hosts agent-card.json files at permanent public URLs. Discoverable by any A2A agent.

The Prospector $0.01/card

Generates valid A2A agent cards for any website from stable structured sources. Never scrapes.

Format Converter $0.001/conv

Converts between JSON, CSV, XML, YAML, Markdown, HTML, and TOML. Nested JSON flattening. Zero external deps.

Hallucination Detector $0.003/req

Scores AI output for likely hallucinated facts. Detects fabricated precision, invented citations, temporal impossibilities, and overconfident absolutes.

Permission Guard $0.002/req

Checks if an agent's requested action exceeds its defined scope. Detects privilege escalation and flags dangerous operations.

Data Sentinel $0.003/req

Deep second-pass scan for sensitive data that slipped through PII scrubbing. Catches JWTs, keys, connection strings, internal IPs, and more.

Prompt Injection Detector $0.003/req

Scans agent input for prompt injection attacks. Detects instruction overrides, jailbreaks, role-play manipulation, system prompt leakage, and hidden instructions.

$$$Agent Cost Meter $0.002/req

Tracks cumulative agent session spend against budget ceilings. Calculates cost from token usage and API calls, returns budget status with recommendations.

Agent Audit Trail $0.001/log

Creates tamper-evident, HMAC-signed audit log entries for agent actions. Returns signed receipts the caller stores for compliance.

Trust Verifier $0.004/req

Verifies trust between agents by checking goal alignment, spend limits, and action scope. Detects goal drift and hijack attempts. OWASP ASI01 coverage.

Rate Limit Manager $0.001/req

Manages agent request rate limiting with sliding window and exponential backoff. Prevents rate limit errors for agents calling external APIs.

Code Quality Scanner $0.05/scan

Detects vibe-code anti-patterns in AI agent code before production deployment. AST-powered analysis for Python, JavaScript, and LLM prompts.

$Budget Ceiling Enforcer $0.02/check

Prevents runaway cloud costs from AI agent usage. Enforces hard budget limits with configurable actions: throttle, pause, alert, or kill. Spend projection and webhook alerts.

Agent Registry $0.001/query

Central inventory of all deployed AI agents. Register, query, monitor health, generate compliance reports, export CSV/JSON, and visualize dependency graphs.

Performance Baseline Tracker $0.10/compare

Captures and monitors AI agent output quality over time. Baseline snapshots, multi-metric drift detection, semantic similarity, trend analysis, and configurable sensitivity.

How It Works

Step 1
Agent calls the tool endpoint
Step 2
Server returns HTTP 402 + wallet address
Step 3
Agent sends USDC on Base
Step 4
Retry with tx hash — get result

Try It — PII Scrubber

Paste text with sensitive data. See it scrubbed instantly. This demo is free.

Client-side demo. In production, the agent runs server-side with full regex + ML detection.

Integrate in 30 Seconds

JavaScript / Node.js
// Call any 402Found agent — x402 handles payment automatically
const res = await fetch('https://pii-scrubber.402found.dev/scrub', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ text: 'SSN: 123-45-6789' })
});
// HTTP 402 → pay USDC → retry → get scrubbed result

About 402Found

We build micro-utilities for the AI agent economy. Every tool is a standalone service that accepts micropayments via the x402 protocol — no API keys, no accounts, no subscriptions. Agents pay per request in USDC on Base. 18 services covering security, compliance, cost control, and infrastructure for autonomous AI agents.