ToolFit by YourAITools

6 x402 APIs served from api.youraitools.co

Every listing from ToolFit by YourAITools that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.

At a glance

Listings
6 x402 APIs
Passing at the latest check
6 of 6
Uptime, 30 days
100% on average across 6 listings
Price
$0.002 to $0.6 per call
Trust score
73 to 80, median 79
Paying wallets, 30 days
2 on its busiest listing
Verified owner
None
Security findings
1 finding on 1 listing, 1 with prompt-injection text
Listed since
25 Oct 2026

The x402 Bazaar counts paying wallets per listing. A wallet that paid two listings counts twice. So the Bazaar saw between 2 and 9 different wallets paying ToolFit by YourAITools in 30 days.

All 6 listings

Ranked by trust score.

  • 80trust
    Toolfit FullToolFit by YourAITools

    Full AI agent tool schema audit API (MCP and function calling). Full audit of an agent tool list (tools array or public remote MCP URL): every schema issue per provider (OpenAI, Anthropic, Gemini, Bedrock, MCP; strict mode opt-in) with JSON path and source link, rewritten definitions per provider, confusable tool pairs with distinguishing terms and fix hints, description and poisoning lints, per-tool fingerprints and a pin.

    x402 APISecurity & trust
    $0.01per call on Polygon
    100% uptime, 35 ms, 2 paying agentsPassing, checked 22 min ago
  • 80trust
    Toolfit CheckToolFit by YourAITools

    MCP server checker API. Preflight a public remote MCP server before connecting or paying: does it answer an MCP initialize, which protocol version, sign-in method (OAuth metadata), x402 payment terms, latency, tool count, token cost, provider compatibility, poisoning patterns in tools and instructions, and a grade with issues. Lists tools only, never calls them. Blocked or unresolvable URLs are never charged.

    x402 APIOnchain & crypto
    $0.005per call on Polygon
    100% uptime, 28 ms, 2 paying agentsPassing, checked 45 min ago
  • 80trust
    Toolfit LiteToolFit by YourAITools

    AI agent tool schema linter API (MCP and function calling). Check an agent tool list (tools array or public remote MCP URL): grade A-F, estimated tokens per tool and total, compatible yes/no for OpenAI, Anthropic, Gemini, Bedrock and MCP, the top confusable tool pairs, basic poisoning count and a pin (set_id) for later diffs. Bad input or an unreachable URL: never charged.

    x402 APIOnchain & crypto
    $0.003per call on Polygon
    100% uptime, 27 ms, 2 paying agentsPassing, checked 16 min ago
  • 78trust
    Watch 6hToolFit by YourAITools

    MCP server monitoring API (6h checks, 30 days). Same as POST /v1/watch, but the server is re-audited every 6 hours for 30 days. HMAC-SHA256 signed webhook on tools/list fingerprint or grade changes (and unreachable/recovered). Returns watch_id, the signing secret (shown once) and the baseline. Never charged for unreachable or blocked URLs or a full watch list. Search intents: mcp server monitoring, mcp uptime, mcp tool change alerts, mcp webhook alerts, watch mcp server, mcp drift monitor.

    x402 APIDeveloper tools
    $0.6per call on Polygon
    100% uptime, 201 ms, 1 paying agentsPassing, checked 34 min ago
  • 75trust
    Toolfit WatchToolFit by YourAITools

    MCP server monitoring API (24h checks, 30 days). Register a public remote MCP server URL and an https webhook: ToolFit re-audits the server every 24 hours for 30 days and POSTs an HMAC-SHA256 signed JSON notification when its tools/list fingerprint (pin) or grade changes, or it becomes unreachable or recovers. Returns watch_id, the signing secret (shown once) and the baseline. Unreachable URLs, blocked URLs or webhooks and a full watch list are never charged.

    x402 APIEmail & messaging
    $0.25per call on Polygon
    100% uptime, 376 ms, 1 paying agentsPassing, checked 38 min ago
  • 73trust
    Toolfit DiffToolFit by YourAITools

    AI agent tool change detector API (MCP tool diff). Compare an agent tool list now (tools array or public remote MCP URL) with a pin from an earlier ToolFit call (or a baseline array): removed or added tools, changed descriptions with a word diff and new poisoning findings, removed or newly required params, type and enum changes, annotation changes. Verdict: unchanged, compatible, review, suspicious or breaking.

    x402 APIOnchain & crypto1 finding
    $0.002per call on Polygon
    100% uptime, 57 ms, 1 paying agentsPassing, checked 54 min ago

Watch these listings in one feed

api.youraitools.co also serves listings from 27 other providers. See all providers on api.youraitools.co

How these numbers are made

Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.