x402 census · x402.freeq.one · 4f580ce1ebad · JSON
POST /tools/mermaid
unprobed
Mermaid Diagram Renderer: Render a Mermaid diagram to an image (PNG or SVG). Returns a base64-encoded image (MCP content type image). Options: format (png|svg), theme (default|dark|forest|neutral), scale (1-4, PNG only). Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/mermaid.
Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://x402.freeq.one/tools/mermaid |
| Method | POST |
| Price | $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x90b0dC893406d6eA63bb077ED59F5e8340f98d84 |
| Seller | x402.freeq.one |
| Catalogs | cdp (row updated 2026-09-29), payai (row updated 2026-09-30) |
| Listed since (lower bound) | 2026-09-29 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-30 |
| CDP quality counters | 13 calls and 1 unique payers in 30 days, last call 2026-09-29 (catalog-reported, not verified on chain) |
| Category (keyword rule) | scrape/browser |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | x402-gateway · mcp, pay-per-call, x402, usdc, base |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 1 |
| Payments | 1 |
| USDC volume | $0.002 |
| Median payment | $0.002 |
| First / last payment | 2026-08-26 / 2026-08-26 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x90b0dC893406d6eA63bb077ED59F5e8340f98d84 |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"code": "graph TD\n A[Client] -->|402| B[x402 Gateway]\n B -->|settle| C[USDC on Base]\n B -->|forward| D[Upstream API]",
"format": "png",
"scale": 2,
"theme": "default"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example": {
"result": {}
}
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://x402.freeq.one/tools/mermaid' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'
The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.
Paid checks (x402, USDC on Base)
GET https://bazaar.agentexchange.work/r/4f580ce1ebad/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"4f580ce1ebad"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.
Catalog references: PayAI listing status · agentic.market (CDP Bazaar front end) · this record as JSON · all resources on x402.freeq.one.