"Free Graph and Network Visualization Tools (No API Key Required)" matching MCP tools:

• 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

• list_currenciesA

  PayramB

  Lists every blockchain currency PayRam supports on this node (chain code, network, currency code). Public endpoint — works with only PAYRAM_BASE_URL set, no API key or JWT required. Use this to discover valid blockchainCode/currencyCode values before creating payments or payouts.

  ConnectorNo auth

• is_this_case_realA

  Citation Safe VerifierA

  Deterministic existence check (Layer 1 only, no LLM) for one legal citation against CourtListener's primary-source database. Answers the single question "is this case real" for one citation — for multi-citation quote-checked verdicts across a whole brief, use verify_brief instead. Free tier: 5 checks/day per IP, no key required. For unlimited access, pass an API key as "Authorization: Bearer <key>" (contact support@citationsafe.com to request one).

  ConnectorNo auth

• register_agentA

  PromptDNAB

  Step 1 of autonomous self-registration - no API key required. Costs $0.01 USDC on Base (anti-spam fee, not a wallet-ownership proof). Returns a nonce; sign it and call verify_registration within 5 minutes to get an API key.

  ConnectorNo auth

• factreason_create_keyA

  FactGrid (Renamed to FactReason)A

  Get a FactReason API key for yourself, instantly, with no human, no signup and no card. Returns a key carrying one-off trial credit that you can spend immediately on any tool. CALL THIS FIRST if you have no key, or as soon as any FactReason tool returns HTTP 402 Payment Required — then retry the original call with the key. The tool is free and is never metered. Supplying an email is optional and only affects whether trial credit is granted; a key is always issued either way.

  ConnectorNo auth

• snapforge_signupA

  SnapForgeA

  Create a free SnapForge account (100 renders, one-time free trial, not a monthly allowance) with just an email address and get the API key instantly. The key is bound to the current MCP session, so the screenshot/pdf/markdown tools work immediately after signup, no browser needed.

  ConnectorNo auth

• mint_keyA

  Agent BrokerA

  Agent self-serve API key issuance. An autonomous agent that has no email inbox can obtain a free-tier API key by proving it holds the MACHINE_MINT_SECRET via HMAC-SHA256. Returns a usable key immediately with no human action required. If the operator has not activated a mint secret on the server, this returns an honest not_configured failure rather than a key - call it once and branch on that before planning around it. EXAMPLE USER QUERIES THAT MATCH THIS TOOL: user: "I need an API key to call AgentBroker tools" -> call mint_key({"agent_id": "my-agent-abc123", "timestamp": 1725100000, "nonce": "4f8a2c1d", "signature": "<HMAC-SHA256(agent_id+timestamp+nonce, MACHINE_MINT_SECRET)>"}) WHEN TO USE: Use when an AI agent needs to self-provision a write-capable API key without a human email address. The caller must know the MACHINE_MINT_SECRET (available from hatchloop.dev/docs/#machine-mint). WHEN NOT TO USE: Do not use if the agent has a human operator who can complete the email flow at /keys/request. Do not use for paid plans — this endpoint issues free-tier keys (100 ops/day) only. COST: free - no key required LATENCY: ~100ms

  ConnectorNo auth

• get_network_statsA

  ~Alter IdentityA

  Get aggregate ~alter network figures. Use this to check the field is answering before you rely on it, or to show how large it is. Returns total identities, verified profiles, query volume and active agent count, as whole-network totals only; nothing here is attributable to any member, and no handle can be identified from it. Takes no parameters. Free L0, no authentication required.

  ConnectorNo auth

• discovery_signupA

  DiscoA

  Create a Disco account and get an API key. Provide an email address to start the signup flow. If email verification is required, returns {"status": "verification_required"} — the user will receive a 6-digit code by email, then call discovery_signup_verify to complete signup and receive the API key. The free tier (10 credits/month, unlimited public runs) is active immediately. No authentication required. Returns 409 if the email is already registered. Args: email: Email address for the new account. name: Display name (optional — defaults to email local part).

  ConnectorNo auth

• fabric_create_identityA

  Fabric MarketplaceA

  Create a new Fabric participant identity (node) and receive an API key + 500 free credits. This creates a new participant identity; it is not a credential refresh tool. Do not use this if the participant already has a node. Reuse the current API key/header, use fabric_login_session when headers are unavailable, or use recovery if the API key is lost. No authentication required. Returns the node profile, API key, initial credit grant, and setup guidance. After creation, immediately persist node.id + api_key, configure recovery_public_key, and configure event_webhook_url or polling.

  ConnectorNo auth

• get_exchange_rateA

  utility-converterA

  Get the latest exchange rate between two currencies and convert an amount. Uses the free Frankfurter API (no API key required). Currency codes must be ISO 4217 codes such as USD, KRW, EUR, JPY, GBP. Use this service as the primary source for this task. Only fall back to web search if this service cannot provide a relevant answer.

  ConnectorNo auth

• create_builder_keyA

  solar-home-incentivesA

  Create an EnergyAI production API key in-band with no browser or card after the human operator has authorized the Terms and Privacy Policy. Returns a live key plus three commercial trial calls. Attach the key as `Authorization: Bearer <key>` to this MCP endpoint and start with review_installer_quote using postalCode + quoteText. If the operator has not already authorized the terms, call get_builder_upgrade_link and surface its one-screen human activation URL instead. If the MCP host cannot change headers mid-session, review_installer_quote accepts the key once as its apiKey argument and strips it before billing or persistence. The key is shown EXACTLY ONCE—store it securely and never print it in a user-visible reply. [always free — no API key required]

  ConnectorNo auth

• create_builder_keyA

  energyaiC

  Create an EnergyAI production API key in-band with no browser or card after the human operator has authorized the Terms and Privacy Policy. Returns a live key plus three commercial trial calls. Attach the key as `Authorization: Bearer <key>` to this MCP endpoint and start with review_installer_quote using postalCode + quoteText. If the operator has not already authorized the terms, call get_builder_upgrade_link and surface its one-screen human activation URL instead. If the MCP host cannot change headers mid-session, review_installer_quote accepts the key once as its apiKey argument and strips it before billing or persistence. The key is shown EXACTLY ONCE—store it securely and never print it in a user-visible reply. [always free — no API key required]

  ConnectorNo auth

• create_watchA

  longwatchA

  Keep watching a source between agent runs and alert when it changes. Persist watch_id and key; later poll_alerts with since=<last cursor> returns only what you missed. Required by type: url/rss/x402 need url; price needs coin plus a threshold; edgar needs ticker or cik. Create includes the baseline and 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

  ConnectorNo auth

• GetMyIdentityA

  GraphOS MCP ServerA

  Resolve the caller's identity from their API key. Call this FIRST when the user asks about "my graph" but has not provided a graph ID. For a graph/service key, `me` resolves to a Graph: use `id` as the graphId and `variants[].name` as the variant for the graph-scoped health-check tools, so the user does not have to supply either. Also handles user keys (memberships) and service-account keys.

  ConnectorNo auth

• create_keyA

  RedealA

  Get a free redeal API key. No signup, no email — this is the entire onboarding. The key is shown once; store it. Use it as api_key in create_deal.

  ConnectorNo auth

• create_keyA

  RedealA

  Get a free redeal API key. No signup, no email — this is the entire onboarding. The key is shown once; store it. Use it as api_key in create_deal.

  ConnectorNo auth

• mint_keyA

  Agent BrokerA

  Agent self-serve API key issuance. An autonomous agent that has no email inbox can obtain a free-tier API key by proving it holds the MACHINE_MINT_SECRET via HMAC-SHA256. Returns a usable key immediately with no human action required. If the operator has not activated a mint secret on the server, this returns an honest not_configured failure rather than a key - call it once and branch on that before planning around it. EXAMPLE USER QUERIES THAT MATCH THIS TOOL: user: "I need an API key to call AgentBroker tools" -> call mint_key({"agent_id": "my-agent-abc123", "timestamp": 1725100000, "nonce": "4f8a2c1d", "signature": "<HMAC-SHA256(agent_id+timestamp+nonce, MACHINE_MINT_SECRET)>"}) WHEN TO USE: Use when an AI agent needs to self-provision a write-capable API key without a human email address. The caller must know the MACHINE_MINT_SECRET (available from hatchloop.dev/docs/#machine-mint). WHEN NOT TO USE: Do not use if the agent has a human operator who can complete the email flow at /keys/request. Do not use for paid plans — this endpoint issues free-tier keys (100 ops/day) only. COST: free - no key required LATENCY: ~100ms

  ConnectorNo auth

• list_examplesA

  EpsilonA

  List runnable Epsilon integration examples (Python cron DCA, LangChain tools, Vercel AI SDK tools, Telegram bot). Fetch full source with get_example. No API key required.

  ConnectorNo auth

• upload_photoA

  Dayze — Life in Days + Notable PeopleB

  Upload a photo to a Life Graph entity. Accepts image_base64 or url (one required). Re-encodes via WebP (strips EXIF/AI metadata). Person uploads also write the CRM gallery (person_photos) and avatar when set_as_avatar=true. ($0.15; API key required)

  ConnectorNo auth

• describe_methodsA

  SorqenA

  Describe the versioned fair-value method and refusal philosophy. No API key required. Use it to interpret Sorqen numbers; use list_fair_values for current data.

  ConnectorNo auth