KnownFix MCP server

• audit_endpointFree

  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_themewrite actionFree

  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.

• check_requestFree

  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.

• check_service_orderwrite actionFree

  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.

• check_submissionFree

  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.

• get_fixFree

  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.

• get_offerwrite actionFree

  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.

• get_skillFree

  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.

• list_catalogFree

  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.

• list_merchFree

  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.

• list_servicesFree

  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.

• list_skillsFree

  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.

• order_servicewrite actionFree

  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_checkout_blockerFree

  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.

• request_fixFree

  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.

• search_fixesFree

  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.

• submit_fixwrite actionFree

  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.

• Code scan3 source files scanned25/25
• Live reliabilityremote reachable in 1064ms20/20
• Tool poisoning17 tool descriptions checked15/15
• Auth qualityopen endpoint exposes 5 write-action tools with no auth3/15
• Maintenancelast push 16 days ago15/15
• Maintainer identityregistry namespace matches repository owner6/10

KnownFix: common questions

Is KnownFix MCP server safe?

Mostly: it is graded B (84/100). Read the KnownFix safety report

How do I install KnownFix?

It runs remotely at knownfix-backend-28.b-hash88.deno.net. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.

Does KnownFix need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is KnownFix maintained?

The last commit was 16 days ago (2026-09-05). The latest release is v0.5.1.

Is KnownFix up?

100% of our last 5 checks got an answer. We check remote servers about four times a day.