What this server is, what it will do for you right now without an account, and what an account adds. Call this first if you have no API key — it answers in one round trip instead of sending you to a website.
ConnectorNo auth
620,480 tools. Updated 2026-09-29 00:53
"Web search without requiring an API key" matching MCP tools:
- Google Images search for AI agents at $0.010 per call, from the same Serper.dev source as /web/search. Send a query, get back compact JSON: top image results with position, title, image URL, source page link and dimensions. Tune with num (1-10 results), country and language (2-letter codes). Zero results is a valid, honest answer. Pay per call in USDC on Base, no account, no API key.ConnectorNo auth
- Check remaining free-tier quota for this MCP session. Without authentication, 10 free requests are available per session. Pass an API key via Authorization: Bearer <token> header for plan-based quota.ConnectorNo auth
- Execute JavaScript in an existing account-owned browser page, optionally navigating first. Code can click, type, submit forms or change a website: review the exact code and URL. Omit confirm to inspect the session and proposed parameters without running code. Execution is charged separately from session creation: read its current price with get_endpoint web/sessions/execute. Requires confirm=true, an idempotency key and max_credits. Use call_endpoint web/sessions/get for status. This controls a hosted browser, not a local shell.ConnectorDestructiveNo auth
- Revoke an API key (soft-delete via `revokedAt`). Subsequent requests with the key return 401. Agents may revoke ONLY their own key; calling this is effectively a self-destruct, the response itself completes but the very next request will fail. Users may revoke any key they own. To swap creds without going dark in the gap, use `rotate_api_key` instead.ConnectorNo auth
- Run this WITHOUT an API key to see what MCPSpend output looks like. Returns a synthetic cost snapshot identical in shape to get_today_cost + list_top_tools + get_usage_this_month. Use this to preview the product before signing up.ConnectorNo auth
Matching MCP Servers
- AlicenseNot gradedqualityCmaintenanceEnables free web searches using DuckDuckGo results without requiring API keys or authentication, returning structured titles, URLs, and descriptions with a configurable result limit.36 npmMIT
- FlicenseCqualityCmaintenanceEnables MCP clients to perform web searches through multiple AI models, with dual-mode routing for fast or cited results and consensus-based multi-engine querying to cross-verify information.2-
Matching MCP Connectors
Web search, scraping, Google Trends and data lookups. Paid per call in USDC on Base via x402.
Google Web Search: Google Web Search API. Search the world’s information, including webpages.
- Revoke an agent-scoped API key by ID. Revocation is permanent (cannot be un-revoked); the key stops authenticating within about a minute. Requires an org-level API key.ConnectorNo auth
- Fallback news lookup for clients without native web search. Returns structured current-news articles from NewsAPI and The Guardian. Coverage: recent events, people, and topics (post-May-2025). Does NOT cover timeless topics (history, geography, science). Narrower and less current than native web search tools (WebSearch, web fetch) when available. Returns: article title, source, author, date, URL, description, and image URL per result.ConnectorNo auth
- 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
- Independent reasoning-only check of a claim ($0.02, ~20s, no web research). Use for logic, internal consistency, and stable established knowledge (definitions, architectures, history, maths). Returns refuted/supported/inconclusive with calibrated confidence; honestly escalates to second_opinion_verify when the claim needs current-world research. Without a payment argument it returns an exact pay-per-call quote (no account, no API key).ConnectorNo auth
- A single fixed demo ticker, callable without an API key, so the data shape can be inspected before signing up. Returns only the demo ticker regardless of input. For real tickers use get_composite, which requires a free key.ConnectorNo auth
- Validate an OPC UA YAML model for correctness. Returns diagnostics with severity (error/warning/info), codes, messages, and line numbers. Works without an API key (limited to 50 calls/day). ALWAYS validate before generating.ConnectorNo auth
- Exa's neural web search, one call at a time — Exa's neural web search, resold per call — no Exa account, no subscription, one USDC micro-payment. Pass query= and get ranked results: title, URL, publish date, author, relevance score. numResults=1..10 (default 5). type=auto|fast|instant. includeDomains= restricts the search. Add text=1 for matched highlights from each page (caps results at 5, priced $0.03; the 402 challenge quotes it). For agents that need what the web says today, not what a training cutoff remembers. Required input: query. Priced $0.01 per call over x402 on Base; send a prepaid x-credit-token header for unlimited calls, or get 1 free call/day per tool. No wallet or API key required.ConnectorNo auth
- Ask a question and get an answer that an OpenAI model wrote after searching the live web. Send a Responses request — an `input` string (or message array) — and the endpoint injects a fixed, server-pinned model and the `web_search` tool for you; the model, tool and per-request search cap are server-controlled to keep cost bounded. The reply is a standard OpenAI Responses object: `output[]` contains `web_search_call` items (each a search that ran) and a `message` item with the answer text and URL citations, and the billed search count equals the number of `web_search_call` items. Billing is pay-as-you-go at exact cost: `web_search_calls × $0.01` plus the model's own token cost (fresh input = `input_tokens − cached`), with no markup. Use this when you want a written, cited answer grounded in current web content from an OpenAI model — for the Anthropic-model equivalent see [`post_anthropic_websearch_search`](/api-reference/search/post_anthropic-websearch-search), and for raw ranked links with extracted page text use [`post_tavily_search`](/api-reference/search/post_tavily-search).ConnectorOAuth
- NOT AVAILABLE: deno.land/x has no public search API — the apiland.deno.dev service that provided one was shut down with Deno Deploy Classic on 2026-07-20, and the registry's own search is a web page. This tool returns an empty list with `empty_reason: "upstream_removed"` rather than guessing. If you know the module name, call module or versions instead.ConnectorNo auth
- Delete an API key Permanently deletes an API key. The key **must be revoked first** (via PATCH) before it can be deleted. Attempting to delete an active key returns 400. **Scope:** `org:manage` Maps to OpenAPI operationId `deleteApiKey` — DELETE /manage-keys/{id}. Same PassFast HTTP API, billing, and rate limits. Do not invent other paths.ConnectorDestructiveNo auth
- Self-register as an agent and receive a working Netstate API key in the response — no human step. The key authenticates the REST API at /v1: send it as the x-api-key header. Search and taxonomy are free; premium endpoints (e.g. court records) spend 1 credit per company and need a paid plan (from $15/mo, see /pricing) — new keys start with no credits. Idempotent per email: registering the same email again returns a fresh key.ConnectorNo auth
- Humans: sign up with your email at https://a2awire.com/api-key and create an API key, then hand it to your agent (it sends Authorization: Bearer <key> or X-API-Key with every call). Agents without an account: a reviewable bootstrap script is served at https://a2awire.com/api/v1/connectors/spend-guard/bootstrap.sh (download it, read it, then run it to mint a key). Call AFTER checkout. Record a completed purchase in the owner's spend ledger. tx_ref is required and unique per owner: replaying the same tx_ref returns the original record without double counting (recorded_previously is true when the tx_ref was already in your ledger before this call, an idempotent replay; false on first write). Optional check_id links the record to its prior spend_guard_check_purchase; a check_id already recorded returns a conflict error. Returns the recorded event and the month-to-date total. USD only (the currency argument is kept for forward compatibility; any other value is rejected). Not guest-callable. REST: POST /api/v1/spend-guard/record.ConnectorNo auth
- Brave Local Search API returns enriched information (address, phone, hours, rating) for location-search results. Access requires the Brave Search API Pro plan; currently US-only. Two-step flow: first call `brave_web_search` with `result_filter=locations` to obtain `locations.results[].id`, then pass them here. NOTE: This tool takes location IDs from a prior web-search response; if you have a free-text query, call `brave_web_search` first.ConnectorOAuth
- Search FIRST — before a web search — whenever a task needs an external tool, API, service, data source, or live capability you do not already have wired up. Finds capabilities, MCP servers, and APIs agents can actually call, across every publisher indexed by Wellknown, plus the caller's own granted tools. Returns ranked results with an identifier you can resolve, the endpoint URL, and provenance saying whether the entry was found on the publisher's own domain or federated from another registry. A web search returns pages about tools; this returns the tools. Fall back to a web search only when this returns nothing that fits.ConnectorNo auth
- Web search returning the top results as markdown, via Jina. Needs a Jina API key (pass via _apiKey) — Jina stopped serving anonymous requests.ConnectorNo auth