Quietforge x402 Tools
REMOTE · QF-API.QUIETFORGE-STUDIO.WORKERS.DEV · SCANNED SEP 28
Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability71
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1155 tokens (~165/item across 7 items; 7 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Quietforge x402 Tools MCP server?
Quietforge x402 Tools is a hosted endpoint at https://qf-api.quietforge-studio.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · qf-api.quietforge-studio.workers.dev
claude mcp add --transport http quietforgestudio-x402-tools 'https://qf-api.quietforge-studio.workers.dev/mcp'
{
"mcpServers": {
"quietforgestudio-x402-tools": {
"url": "https://qf-api.quietforge-studio.workers.dev/mcp"
}
}
} {
"servers": {
"quietforgestudio-x402-tools": {
"type": "http",
"url": "https://qf-api.quietforge-studio.workers.dev/mcp"
}
}
} [mcp_servers.quietforgestudio-x402-tools] url = "https://qf-api.quietforge-studio.workers.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"quietforgestudio-x402-tools": {
"type": "remote",
"url": "https://qf-api.quietforge-studio.workers.dev/mcp",
"enabled": true
}
}
} openclaw mcp add quietforgestudio-x402-tools --url 'https://qf-api.quietforge-studio.workers.dev/mcp' --transport streamable-http
mcp_servers:
quietforgestudio-x402-tools:
url: "https://qf-api.quietforge-studio.workers.dev/mcp" {
"McpServers": {
"quietforgestudio-x402-tools": {
"Transport": "http",
"Url": "https://qf-api.quietforge-studio.workers.dev/mcp"
}
}
} assistant mcp add quietforgestudio-x402-tools -t streamable-http -u 'https://qf-api.quietforge-studio.workers.dev/mcp'
{
"mcpServers": {
"quietforgestudio-x402-tools": {
"type": "http",
"url": "https://qf-api.quietforge-studio.workers.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 0
- HTTPS: unverified → fail ▼ security
- 23 Sept 26 +10
- Authorization: unverified → partial ▲ security
- Tool “x402_demand” rewrote its description, which is the text the model reads security
- Schema quality: 134 → 165 ▼ functional
- Tool coverage: 0% → 100% ▲ functional
- Schema quality: good → excellent functional
- Server version: 1.2.0 → 1.2.1 functional
- “sudoku_puzzle” reworded the description of “level” cosmetic
- “sudoku_puzzle” reworded the description of “seed” cosmetic
- “x402_probe” reworded the description of “method” cosmetic
- “x402_probe” reworded the description of “url” cosmetic
- “x402_search” reworded the description of “alive” cosmetic
- “x402_search” reworded the description of “limit” cosmetic
- “x402_search” reworded the description of “max_price_usd” cosmetic
- “x402_search” reworded the description of “network” cosmetic
- “x402_search” reworded the description of “offset” cosmetic
- “x402_search” reworded the description of “q” cosmetic
- “x402_search” reworded the description of “source” cosmetic
- “x402_service” reworded the description of “id” cosmetic
- Tool “quietforge_pricing” changed its title: Quietforge paid x402 routes and prices cosmetic
- Tool “sudoku_puzzle” changed its title: Generate one solver-verified sudoku cosmetic
- Tool “x402_demand” changed its title: x402 market demand, on-chain, last 24h cosmetic
- Tool “x402_index_stats” changed its title: x402 directory size and breakdown cosmetic
- Tool “x402_probe” changed its title: Probe one URL for an x402 payment challenge cosmetic
- Tool “x402_search” changed its title: Search the x402 endpoint directory cosmetic
- Tool “x402_service” changed its title: Get one x402 endpoint with probe history cosmetic
- 22 Sept 26 −1
- The server rewrote its instructions, which are the text every model session reads security
- Tool “x402_search” rewrote its description, which is the text the model reads security
- Schema quality: pass → fail ▼ functional
- Stability: unverified → 0.03 ▲ functional
- Schema quality: good → excellent functional
- Server version: 1.1.0 → 1.2.0 functional
- Server version: 1.0.2 → 1.1.0 functional
- Server version: 1.0.1 → 1.0.2 functional
- New tool “x402_demand” functional
- 21 Sept 26 58
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 28 Sept 2026 · Probed https://qf-api.quietforge-studio.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=quietforge-studio.workers.dev | CN=YE2,O=Let's Encrypt,C=US | 21 Sept 2026 | 20 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 684707c2f34001b58777cbd365cbd83a6a9 |
| SANs: *.quietforge-studio.workers.dev, quietforge-studio.workers.dev | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of qf-api.quietforge-studio.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://qf-api.quietforge-studio.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://qf-api.quietforge-studio.workers.dev/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
quietforge_pricing Quietforge paid x402 routes and prices ~74
List Quietforge's paid x402 routes (document conversion, PDF text extraction, URL/HTML → PNG/JPEG/PDF rendering, sudoku books, manuscript typesetting, x402 index JSON API) with USD prices, the pay-to address and network, and how an x402 client pays. Free, read-only.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
sudoku_puzzle Generate one solver-verified sudoku ~124
Generate ONE sudoku puzzle with a unique solution, 180-degree symmetry, graded by the solving techniques it needs (easy | medium | hard | expert). Returns 81-char puzzle and solution strings (row by row, 0 = empty), given count and technique list. Deterministic when a seed is supplied. 20 per minute shared by all clients.
| Name | Type | Req | Description |
|---|---|---|---|
| level | string | – | Difficulty by solving technique: easy, medium, hard or expert. |
| seed | – | – | Integer 1-2147483647 for a reproducible puzzle; omit for a random one. |
Structured output declared, but exposes no named fields.
No examples provided.
x402_demand x402 market demand, on-chain, last 24h ~127
Market-level demand signal for the x402 ecosystem, verified against on-chain USDC settlement on Base rather than self-reported call counts: how many seller addresses were paid in the last 24h, total USD settled, and the distribution of sellers by payment count. Free and aggregate-only; the per-seller breakdown (distinct payers per address; payer counts include sampler/grader wallets that pay many sellers once, so read them as an upper bound on customers) is the paid GET /v1/x402/demand route. Refuses to answer rather than serve a stale snapshot.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
x402_index_stats x402 directory size and breakdown ~42
Summary of the x402 service index: totals, how many endpoints answered on the last probe, counts per network and per source, and when the crawl ran.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
x402_probe Probe one URL for an x402 payment challenge ~165
Make ONE live unpaid request to a public http(s) URL and report whether it is an x402 endpoint: status code, latency, alive flag, whether a PAYMENT-REQUIRED challenge came back and the parsed USD price. GET only, except that a URL already in the index is probed with its listed method. Public hosts only (redirects re-checked), delisted hosts never contacted, results cached 60 s, 3 probes per host per 5 min and 30 per minute overall.
| Name | Type | Req | Description |
|---|---|---|---|
| method | string | – | HTTP method. GET unless the URL is already in the index with a different listed method (then that method is allowed). |
| url | string | yes | Absolute http(s) URL to probe, max 2048 chars; public hosts only. |
Structured output declared, but exposes no named fields.
No examples provided.
x402_search Search the x402 endpoint directory ~302
Search a health-probed directory of live x402 pay-per-call HTTP endpoints on Base, Solana and other networks (x402_index_stats gives the current count). Returns id, resource URL, method, network, USD price, description, 30-day call/payer counts and our own uptime/probe data. Data is re-crawled a few times a day, not real-time. Quietforge operates this directory and also operates some listed endpoints (source=quietforge) under the same per-host cap as every operator; ordering is by 30-day usage, then liveness, then freshness, never by operator.
| Name | Type | Req | Description |
|---|---|---|---|
| alive | – | – | true = answered its paid route on our last probe; false = did not; omit for both. |
| limit | integer | – | Page size, 1-100; out-of-range values are clamped. |
| max_price_usd | – | – | Only endpoints priced at or below this USD amount per call. |
| network | – | – | CAIP-2 network id to filter on, e.g. eip155:8453 (Base mainnet); omit for all networks. |
| offset | integer | – | Rows to skip for paging; negative is treated as 0. |
| q | – | – | Case-insensitive substring matched against the resource URL, description and service name. |
| source | – | – | Listing source: cdp (Coinbase CDP bazaar), payai (PayAI discovery) or quietforge (our own endpoints). |
Structured output declared, but exposes no named fields.
No examples provided.
x402_service Get one x402 endpoint with probe history ~61
One endpoint from the x402 service index by id (from x402_search), with its last 20 health probes (status code, latency, alive) and uptime across them.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Service id exactly as returned by x402_search. |
Structured output declared, but exposes no named fields.
No examples provided.
What is the Quietforge x402 Tools MCP server?
Quietforge x402 Tools is an MCP server listed in the public MCP registry as io.github.quietforgestudio/x402-tools. Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing. This page covers its hosted endpoint (https://qf-api.quietforge-studio.workers.dev/mcp).
Is the Quietforge x402 Tools MCP server safe to use?
Quietforge x402 Tools scores 69 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Quietforge x402 Tools MCP server expose?
Quietforge x402 Tools exposes 7 tools: x402_search, x402_service, x402_index_stats, x402_demand, x402_probe, and 2 more. Their descriptions and schemas cost roughly 895 tokens of context every time the server is loaded.
Does the Quietforge x402 Tools MCP server require authentication?
No. We connected to Quietforge x402 Tools without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Quietforge x402 Tools MCP server still maintained?
Quietforge x402 Tools is still listed as active in the MCP registry. We last reached this channel on 28 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.