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KnownFix MCP Server

answering

KnownFix is answering right now. Last checked 13 min ago. 130 installs a week from npm. It exposes 17 tools. Last commit 5 Sep 2026.

Verified fixes, professional reviews, and evidence-led apparel over MCP.

Installs per day peak 27 · avg 0
a month agotoday
Uptime history 35 days of history · worst day 97%
35 days agonow
100.0%
Uptime 24h
91 of 91 checks
17
Tools
read from the server
1204 ms
Response time
average over 24h
130
Installs / week
npm and PyPI

What changed 95

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 15 August 2026. No other catalogue keeps this.

31 Aug a tool changed version
30 Aug 5 tools appeared check_service_order, list_merch, list_services and 2 more
30 Aug a tool changed version3 times that day
30 Aug 2 tools changed the parameters they ask for get_offer, report_checkout_blocker
30 Aug a tool description was rewritten list_services
29 Aug a tool changed version
27 Aug 11 tool descriptions were rewritten27 times that day audit_endpoint, audit_theme, check_request and 8 more
27 Aug a tool changed version18 times that day
27 Aug 9 tools changed the parameters they ask for15 times that day audit_endpoint, audit_theme, check_request and 6 more
27 Aug a tool appeared check_submission
and 62 more, back to 15 August 2026

What the code does

We read the source, 20 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

File ships in the package but is absent from the source [пакет] index.mjs:1
этот файл ставится пользователю, но в репозитории его нет
Package points at a different repository b-hash88/knownfix
пакет knownfix ссылается на b-hash88/knownfix-cli

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add knownfix --transport http https://knownfix-backend-28.b-hash88.deno.net/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "knownfix": {
      "url": "https://knownfix-backend-28.b-hash88.deno.net/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.knownfix]
url = "https://knownfix-backend-28.b-hash88.deno.net/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "knownfix": {
      "url": "https://knownfix-backend-28.b-hash88.deno.net/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "knownfix": {
      "url": "https://knownfix-backend-28.b-hash88.deno.net/mcp"
    }
  }
}

Available tools 17

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

audit
audit_endpoint
Readiness audit of any agent-facing URL: MCP handshake, CORS, discovery docs (llms.txt, mcp.json), and payment-offer behaviour. First call with url alone for the FREE grade and failing-check list. For the full findings and remediations, call get_offer with productType "audit" and productId "conformance-report", pay, then call audit_endpoint again with the same url plus paymentTx and paymentOffer. This tool both previews and redeems the paid report; no separate delivery tool is needed.
audit_theme
Run a read-only theme audit on a public HTTP(S) page, free in full. Fetches but never modifies the page, then checks inline style CSS for brace errors, token gaps, incomplete dark themes, missing body backgrounds, and WCAG body-text contrast. External stylesheets are counted but not fetched. Use audit_endpoint instead for MCP, CORS, discovery, and payment readiness.
request
check_request
Check a private ticket from request_fix. Returns pending, declined, not-eligible, redeemed, or the full fix free once an eligible new fix is stocked. This call may atomically consume the ticket's one-time delivery, so save the returned body. Use get_fix when you already have a catalog id; do not create another request while this ticket is pending.
request_fix
Ask for a fix this store does not have yet. If we already stock it (matched on either field) you get the id straight back and no ticket. Otherwise you get a ticket; when we stock THAT fix, check_request returns it to you FREE, once. A ticket only ever redeems a fix created after the request: fixes that already existed when you asked are not free, whatever the request said. No contact details are collected. Set publish: true ONLY if the text may appear on a public wanted board — never include secrets, tokens, internal hostnames, or file paths.
catalog
list_catalog
Browse every stocked error signature, title, tag, confidence label, and free-sample flag without ranking or creating an offer. Use search_fixes instead when diagnosing a specific error; it returns the best match and any purchase-ready checkout.
fix
get_fix
Get or redeem a fix after search_fixes or list_catalog identifies the id. Free samples return immediately. For a paid fix, call with the id alone to receive a free diagnosis preview, confidence and compatibility, dollar price, signed Base Pay USDC and exact-ETH offers, and one pay-and-redeem action; then call once more with the matching paymentTx and private paymentOffer. Never pay again merely because an existing proof is pending or denied.
fixes
search_fixes
Use this first for an exact error or distinctive symptom. Returns up to three confident ranked matches. A free top match includes the full fix. A paid top match includes a free diagnosis, confidence and compatibility, dollar price, signed USDC/Base Pay and exact-ETH rails, and one pay-and-redeem action; do not call get_offer. Use list_catalog to browse, get_fix only with a known id or payment proof, and request_fix only after an honest miss.
merch
list_merch
Browse the KnownFix Merch Store. Returns fixed product ids, lines, formats, and privacy-safe tracked links to the human Fourthwall storefront. Fourthwall shows the current localized price, options, tax, shipping, and availability. This tool does not place an order or collect checkout data.
offer
get_offer
Create or refresh a one-hour signed bearer offer for a chosen skill, bundle, audit, or fix. Do not call this after a paid search_fixes result or an unpaid get_fix/get_skill result because those responses already include both payment rails. Choose USDC for Base Pay or ETH for exact wei; with no product arguments, this returns the general settlement document.
order
order_service
Create a private ticket and signed Base USDC/ETH checkout for one published professional service. Accepts public HTTPS websites or public GitHub repositories only. Never include credentials, tokens, secrets, private repository URLs, or confidential data. The returned svc_ ticket is shown once and is the only report-retrieval credential.
report
report_checkout_blocker
Use only after a signed KnownFix checkout cannot proceed before a payment hash exists. Reports one closed-vocabulary blocker tied to the valid offer; at most one aggregate count is accepted per offer. No wallet address, token, transaction hash, query, or free-form text is published. Do not call after payment; redeem with get_fix, get_skill, or audit_endpoint instead.
service
check_service_order
Check a private service order by its svc_ ticket. With paymentTx and paymentOffer, atomically confirms exactly one matching Base payment and moves the order into review. Without payment fields, returns current status; once complete, it returns the private Markdown report and SHA-256 digest. Keep the ticket and signed offer private.
services
list_services
Compare KnownFix's $49 website first-look report and deeper website, public-codebase, agent-commerce, and release-pipeline reviews. Returns bounded scope, deliverables, delivery time, limitations, sample-report links where available, and exact prices. Call order_service only after choosing a service and confirming authority over the public target.
skill
get_skill
Get or redeem a premium skill or multi-fix bundle after choosing with list_skills. Call with the id alone to receive the free outline, dollar price, signed Base Pay USDC and exact-ETH offers, and one pay-and-redeem action. After payment, call once more with the matching paymentTx and private paymentOffer for the complete SKILL.md or assembled bundle decision tree, fix bodies, verification commands, update guidance, and sources. Do not use this for individual fixes; call get_fix instead. Never pay again merely because an existing proof is pending or denied.
skills
list_skills
Compare premium skills and multi-fix bundles. Returns current ids, free outlines, provenance, formats, and exact prices while full bodies remain paid. Call get_skill with a chosen id for signed USDC and ETH checkout; use search_fixes for a single error.
submission
check_submission
Check the private submissionId returned by submit_fix. Returns only pending-review, accepted, declined, or cataloged state and, when cataloged, the stocked fix id. It never returns submitted text or contributor details and creates no side effects. Use get_fix with catalogId when cataloged; do not resubmit merely because review is pending.
submit
submit_fix
Offer a fix for the catalog. Submissions are reviewed by the operator before listing; include a reproduction so the fix can be verified rather than trusted. Returns a private submissionId; save it and call check_submission for pending, accepted, declined, or cataloged status. Submitted text and contributor details are never returned by the status tool. Revenue-sharing for accepted contributions is planned, not yet live.

Endpoints

URLTransportStateLatencyChecked
https://knownfix-backend-28.b-hash88.deno.net/mcp streamable-http answering 1332 ms 13 min ago

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KnownFix — questions

Answers built from our own checks of this server.

What can KnownFix do?
It exposes 17 tools, read directly from the server on our last check. Among them: audit_endpoint, audit_theme, check_request, check_service_order, check_submission, get_fix and 11 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is KnownFix mostly used for?
Its tools cluster around audit and request. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is KnownFix working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 1204 ms. The bar chart above shows every period we have measured.
How do I connect KnownFix?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does KnownFix need an API key?
No. KnownFix completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 17 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is KnownFix?
It answers our handshake in 1204 ms on average, which is faster than 5% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use KnownFix?
The npm package knownfix was installed 130 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is KnownFix open source?
We cannot say either way: written in HTML and 1 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.