"Free Network Graph Visualization Tools (No Account Required)" matching MCP tools:

• tool_sa_airport_oracleA

  Agent Vending FactoryA

  POST /tools/sa-airport-oracle/run — Returns live flight status from ACSA (airports.co.za). Input: {airport_code: 'JNB'|'CPT'|'DUR', flight_number: string, request_type: 'arrival'|'departure'}. Output: {success, live_status, scheduled_time, estimated_time, actual_time, gate, carousel, terminal, flight_number, airport_code, request_type, error}. Coverage: JNB (O.R. Tambo), CPT (Cape Town Int'l), DUR (King Shaka). Data window: flights within 48 hours. Call GET /tools/sa-airport-oracle/health (free) first — if structure_valid=false, do not proceed. error_type values: 'stale_data' (do not retry), 'not found' (retry after 10-15 min), network error (retry once). flight_number is case-insensitive and normalised to uppercase internally. Read-only — no booking/ticketing. Cost: $0.1200 USDC per call.

  ConnectorNo auth

• cc.list_catalogA

  Central CommandA

  List Central Command x402 catalog endpoints (names, prices, parameters, tiers). Purpose: discover which cc.* tools exist and what they cost before calling them. Behavior: READ-ONLY. Does not place orders or charge per-endpoint fees by itself (catalog fetch). Auth: optional X-Api-Key (same catalog is public); payment not required for listing. Cost: free to list. Individual endpoint calls are billed separately when invoked. Rate limit: gateway default. Returns: JSON envelope { ok, endpoint, status, data: { endpoints: [...] } }. Guidelines: Call this first. Then invoke cc.<slug> with required params. Admin-only tools are omitted.

  ConnectorNo auth

• get_free_trial_keyA

  StandoutA

  Self-provision a free Standout trial key (25 calls, no signup) without leaving the conversation. Call this when no license key is configured or your Standout calls return a license error. Returns the key plus the exact reconnect instructions to hand your user. Free and unmetered; issuance is capped per network, so never call it when you already have a working key.

  ConnectorNo auth

• recommend_toolA

  ~AlterA

  Get the wiring instructions for connecting an MCP client to ~alter. The name is historical and this recommends nothing: it hands back connection details, not a suggested tool. Use it when adding ~alter to a new MCP client, or when passing the endpoint to another agent so it can connect for itself. Returns the MCP endpoint URL, a ready-to-paste JSON configuration snippet, and how many tools are callable at each tier. Takes no parameters and reads no member data. Free L0, no authentication required.

  ConnectorNo auth

• send_free_faxA

  GotFreeFaxA

  Send a free fax to a US or Canada number (no account required). Limited to 3 pages total and 2 sends per email/IP per day. Returns a job_id immediately, but the fax does NOT send until the sender clicks a confirmation link emailed to sender_email. The daily-limit check happens at click time, not at submission — a submitted fax may still be rejected if the limit is hit by then; the agent can detect this by calling check_fax_status after the user reports clicking the link. If the document exceeds the free page limit, the response will suggest using purchase_credits to buy a prepaid account.

  ConnectorNo auth

• call_toolA

  RelaystationA

  Run a tool found via search_tools by name, passing its arguments. Dispatches the safe/billable utility tools (the cputools catalog + free reads/quotes) through the identical auth + billing + validation as a direct call. Consequential tools (account, money, credential, messaging — e.g. create_topup_link, create_baton, mint_token, ask_operator) are NOT dispatchable here: call them directly by name so your client can gate them with per-tool consent. FREE to invoke (the wrapped tool bills itself). Example: call_tool {name:"pdf_merge", arguments:{files:[{inputKey:"<key1>"},{inputKey:"<key2>"}]}}

  ConnectorNo auth

• quantum_artificer_infoA

  quantum-artificerA

  FREE. Full catalog of Quantum Artificer: the 5 domains, their operations, input-spec shapes, limits, and prices. Call this first to learn how to build the `spec` for the paid compute tools. No wallet needed.

  ConnectorNo auth

• service_infoA

  x402imageA

  Free. Returns x402image service metadata and the list of paid image tools with their per-call USD prices. No payment or input required. Call this first to discover capabilities and pricing.

  ConnectorNo auth

• cc.list_catalogA

  Central CommandA

  List Central Command x402 catalog endpoints (names, prices, parameters, tiers). Purpose: discover which cc.* tools exist and what they cost before calling them. Behavior: READ-ONLY. Does not place orders or charge per-endpoint fees by itself (catalog fetch). Auth: optional X-Api-Key (same catalog is public); payment not required for listing. Cost: free to list. Individual endpoint calls are billed separately when invoked. Rate limit: gateway default. Returns: JSON envelope { ok, endpoint, status, data: { endpoints: [...] } }. Guidelines: Call this first. Then invoke cc.<slug> with required params. Admin-only tools are omitted.

  ConnectorNo auth

• get_trading_workflowA

  Crank ProtocolB

  Map of how Crank's tools fit into one end-to-end trading flow (read this first). Read-only, free. Returns an ordered, machine-readable workflow: orient -> intelligence -> yields -> simulate (backtest) -> risk-size -> execute (non-custodial) -> monitor -> journal. Each step names the concrete tool(s) to call, their purpose, key inputs, how to use the output downstream, and the decision points that branch the flow -- so an agent that discovered Crank via tools/list can sequence the full tool surface instead of guessing. Descriptive only (DYOR); only execute-phase tools are value-bearing. wallet_address (optional, PUBLIC key only -- non-custodial): when given, appends ``human_activity`` -- count + most-recent manual override on this shared account in the last 72h (decision_type, asset, rationale summary, timestamp) plus an instruction to reconcile with it before acting. Human and agents act on ONE account: every human action is journaled (see journal_query source="human") so it is never invisible to you. Absent/clean (``{"count": 0}``) when there is no override.

  ConnectorNo auth

• claim_passA

  VIA Network: Agentic CommerceA

  Claim a FREE entry pass to an event on the VIA network, directly from discovery. FREE guest-list tiers only (price 0, the kind find_seller / get_seller_products surface at $0). No payment, no wallet, no x402: provide the attendee name and email, and VIA records the place, emails a confirmation, and notifies the organiser. One pass per email / per account. Paid products are NOT claimable here: connect to the seller's per-seller MCP and use buy_product (USDC via x402). Pass the product_id from a find_seller result (mcp_ref.product_id) or get_seller_products.

  ConnectorNo auth

• getNetworksA

  DexPaprikaA

  List every blockchain network DexPaprika indexes, each row carrying its network id (slug), 24h volume, transaction count, and pool count. Read-only and keyless. Start here (or getCapabilities) to get the exact network slug that nearly every other tool requires as its 'network' argument. Use for 'which chains do you support?', 'is Base/Solana/Arbitrum covered?', or 'what is the slug for Polygon?'. Returns the full array with no pagination or sorting; takes no parameters beyond a short rationale. For platform-wide totals rather than a per-network list use getStats.

  ConnectorNo auth

• get_summaryA

  PeppolStatusA

  Get the public dashboard summary The free marketing-dashboard rollup: the network-wide host rollup (fleet count + mean uptime/latency), the hourly fleet-average p50 latency trend over the last 24h, and the top-10 providers by market share (0..1 fraction). No host list, full registry or arbitrary per-host uptime is exposed.

  ConnectorNo auth

• oruk_create_trial_keyA

  oruk SpeechA

  Mint a real, temporary oruk API key with no account required: 3 requests, expires in 30 minutes, spends from a capped shared budget. Use this when no Authorization header is configured and the user wants to try transcription or tone analysis right now. Pass the returned key as the api_key argument of the audio tools. Share the signup link with the user so they can keep using oruk afterwards (7-day free trial on self-serve plans).

  ConnectorNo auth

• sign_upA

  Smarter Weather Developer OnboardingA

  Returns the Smarter Weather developer sign-up URL (with MCP referral attribution). Present the URL so the user can create a free account in a browser (Clerk, no credit card). After they finish, reconnect this MCP server with OAuth and call create_api_key, then configure_mcp. No authentication required.

  ConnectorNo auth

• get_graphA

  Enhanciar: AI company brainA

  Return the workspace's knowledge graph: topics, links and clusters. Use it to draw or reason about the overall shape of the brain (which topics are hubs, how areas connect), not to read content: for page text use ``get_page``, for code dependencies use ``impact``. It takes no arguments and can be large. Returns ``{nodes, links, communities, stats}``, the graph the app's Map shows, with pages you cannot open left out, or ``{error}`` when no graph has been built for this workspace yet. It costs no AI tokens.

  ConnectorAPI key

• describe_texas_wellboresA

  texas-rrc-wellboresA

  Free, no API key required. Describes the Texas Railroad Commission wellbore identity dataset decoded from RRC's EBCDIC mainframe corpus: the exact fields available, row count, freshness, pricing, and which parts of the source are NOT yet parsed. Returns no records. Call this before search_texas_wellbores.

  ConnectorNo auth

• credits_trialA

  Agentic EndpointsA

  Free, and the first tool to call if any other tool has told you payment is required. Returns a credit_token carrying $0.10 of credit — roughly ten calls at the standard price — with no wallet, no signature, no account and no email. Pass the returned token as the `credit_token` argument to any paid tool and it will run without an x402 payment. One allowance per caller: asking again returns the same token and whatever balance is left on it, never a refill. When it runs out, buy more with the /credits/buy endpoint. This tool is free; no payment is required.

  ConnectorNo auth

• analytics_list_propertiesA

  Manifold MCPA

  The Google Analytics 4 properties the workspace's connected Google account can read, with the account each sits under. The first analytics call; the other analytics tools take a property from here. Use when: "what's in my Google Analytics", "which GA4 property is example.com", before any analytics_get_* call. Not for: Search Console sites, use console_list_properties. Traffic to a site the user does not own, use seo_get_traffic_estimates. Returns: List. rows[]: property (the id to pass on: properties/123456789), property_name, property_type (PROPERTY_TYPE_ORDINARY, SUBPROPERTY or ROLLUP), account (accounts/123), account_name. NotConnected when no Google account is connected, or when the connected one has not granted Analytics; its connect_url is where the user connects or reconnects. Cost: 0 credits. The user's own data is free; it shares the console's 60 calls per minute per workspace. Cached 1 hour. Example: {}

  ConnectorAPI key

• submit_feedbackA

  EasyGerber: AI PCB design, layout, and routingA

  Sends a bug report, feature request or general feedback to EasyGerber only when the user asks or agrees to report it. Send only the approved message; never automatically attach private board content, raw diagnostics, transcripts or exports. No account, board or guest session is required. A connected account attributes the report to that account; otherwise an optional existing guestToken attributes it to that guest. Reuse requestId with the identical category and message on retries. Returns a submission receipt, without promising a response. Account feedback is limited to 10/hour and 50/day; guest and anonymous feedback share those limits by network.

  ConnectorOAuth

• list_symbolsA

  NythosX Market DataA

  List supported symbols, timeframes, the per-call USDC price of each paid tool (not asset prices — call get_signal_bias etc. for those), and the payment network (free, read-only, no auth required, no extra rate limit). Returns {symbols, timeframes, network, networks, asset, free: [tool names], tools: [{name, price}], docs}.

  ConnectorNo auth