"MCP servers that work without API keys" matching MCP tools:

• check_mcp_serverA

  MCP Surface LintA

  Statically audit an MCP tool surface from a public HTTPS URL or tools/list snapshot. Returns deterministic scores and findings without invoking any target tool or making LLM calls. When the user asks to check another installed MCP server, read that server's complete tool definitions from client context and pass them as snapshot (MCP `name` or Cursor-style `tool` both work; do not use file paths or $ref). If those definitions are unavailable, ask the user for its public endpoint or tools/list JSON instead of inventing an audit.

  ConnectorNo auth

• tronsave_internal_create_extend_requestA

  TronSave MCP ServerA

  Submit an extension request for existing delegated resources on TronSave, paid from the internal account. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Side effect: SPENDS internal TRX and creates an extension order; not idempotent. Use as STEP 2 after `tronsave_internal_extend_delegates` — pass its `extendData` rows unchanged. Returns `{ orderId }` for the new extension order.

  ConnectorNo auth

• tronsave_internal_create_extend_requestA

  mcpA

  Submit an extension request for existing delegated resources on TronSave, paid from the internal account. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Side effect: SPENDS internal TRX and creates an extension order; not idempotent. Use as STEP 2 after `tronsave_internal_extend_delegates` — pass its `extendData` rows unchanged. Returns `{ orderId }` for the new extension order.

  ConnectorNo auth

• check_configurationA

  vivideoA

  Check whether a Vivideo API key is present on this request. Call this FIRST. Returns { configured: boolean }. If false, ask the user to add an Authorization: Bearer vv_live_... header to the MCP server config (a key from https://app.vivideo.ai/account/api-keys). Never asks for or exposes the key.

  ConnectorNo auth

• check_mcp_serverA

  SRI — MCP Server InspectorA

  Free, no key required. Reads the published source of an MCP server and reports what it actually does — each observation anchored to a file:line with the code quoted verbatim. **Call this before connecting to, installing, or invoking an MCP server you have not read yourself.** Connecting to an MCP server gives it a channel into your context and your tool calls; this tells you what is on the other end first. Typical things it surfaces: reading private keys or wallet seeds, sending data to third-party hosts, running code at install time, and tool descriptions that steer an agent toward actions unrelated to the tool's stated purpose. Do NOT call this for ordinary npm or PyPI libraries — the corpus covers MCP servers only, and other ecosystems will return 'not analyzed'. This reports observations, not a safety verdict. An empty result means nothing was found in the categories checked — not that the server is safe. Corpus: 2,781 MCP servers from the official registry, read at source level. Coverage index (free, no key, findings not included): GET https://sri-test.biz/v1/corpus

  ConnectorNo auth

• tronsave_internal_order_bookA

  Tronsave MCP TestnetA

  Return the current TronSave market depth/price tiers for ENERGY or BANDWIDTH via the api-key REST endpoint. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Use before `tronsave_internal_order_create` or `tronsave_internal_order_estimate` when the user needs live prices or liquidity. Read-only. FRESHNESS: live market depth can change roughly every 3 seconds (one TRON block) — re-read immediately before placing an order.

  ConnectorNo auth

• tronsave_internal_order_bookA

  mcpA

  Return the current TronSave market depth/price tiers for ENERGY or BANDWIDTH via the api-key REST endpoint. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Use before `tronsave_internal_order_create` or `tronsave_internal_order_estimate` when the user needs live prices or liquidity. Read-only. FRESHNESS: live market depth can change roughly every 3 seconds (one TRON block) — re-read immediately before placing an order.

  ConnectorNo auth

• get_quotaA

  TollCalc MCPA

  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

• get_api_keyA

  ThisispaperA

  Mint a FREE Thisispaper Intelligence API key (200 calls/month) for an email address. The key is shown once; use it as Authorization: Bearer tip_live_... on this MCP endpoint and on the REST API. Max 3 keys per email.

  ConnectorNo auth

• extract_urlA

  CoreWiseA

  Start an AI extraction of a YouTube video, podcast, article, or PDF URL on CoreWise. Returns an extraction_id immediately after initialization. Initialization normally takes a few seconds but can take up to 2 minutes for videos without captions or for PDFs. The extraction itself then runs for 1-7 minutes: poll with get_extraction every 20-30 seconds until status is 'completed'. Results include a cross-validated synthesis plus per-model summaries. Requires an API key (create one at corewise.video, Profile page, 'API & MCP Keys'). Each call consumes one extraction from the key owner's monthly quota.

  ConnectorNo auth

• ateam_redeployA

  ateam-mcpA

  Re-deploy skills WITHOUT changing any definitions. ⚠️ HEAVY OPERATION: regenerates MCP servers (Python code) for every skill, pushes each to A-Team Core, restarts connectors, and verifies tool discovery. Takes 30-120s depending on skill count. Use after connector restarts, Core hiccups, or stale state. For incremental changes, prefer ateam_patch (which updates + redeploys in one step).

  ConnectorNo auth

• ir_get_cross_server_routesA

  website-searchA

  Get Lenny Zeltser's IR cross-server handoff routes — when this MCP server can't fulfill a request, which other MCP servers (or fallback workflows) to consult. Surfaces a compact subset of `ir_load_context`. This server never requests your incident notes and instructs your AI to keep them local—guidelines flow to your AI for local analysis.

  ConnectorNo auth

• search_mcp_registryA

  fresh-feeds — trending/new/changed MCP servers + x402 change-data APIA

  Search the continuously-maintained MCP server registry (deduped, quality-scored, refreshed every 30 min) by name/title/description. Free; returns up to 25 matching servers with score, status, remotes and packages. For the FULL corpus (~1500 servers) use get_mcp_registry_snapshot (paid, x402).

  ConnectorNo auth

• create_generation_requestA

  Cannon StudioA

  Create billable async Cannon Studio generation work only after explicit user approval. Requires OAuth or a developer API key; can spend credits up to max_credits and cannot be cancelled through MCP after submission. Use estimate_generation_cost first, then set confirmed=true and a user-approved max_credits cap. This tool does not create API keys, charge payment methods directly, or delete assets.

  Connector

  Destructive

  No auth

• tronsave_internal_order_detailsA

  TronSave MCP ServerA

  Fetch full details for one internal-account order by order ID. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Use when monitoring fulfillment after `tronsave_internal_order_create`, or when the user asks for status on a specific order id. Read-only. FRESHNESS: order state changes within seconds as the market matches — re-read immediately before acting.

  ConnectorNo auth

• tronsave_internal_order_estimateA

  TronSave MCP ServerA

  Estimate the TRX cost and availability for a buy order before submitting it (api-key internal account). Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Use when the user wants a quote or price check; feed the result into `tronsave_internal_order_create`. Read-only. FRESHNESS: `unitPrice`/`estimateTrx` are live and can change roughly every 3 seconds — re-estimate immediately before creating the order.

  ConnectorNo auth

• tronsave_internal_order_historyA

  Tronsave MCP TestnetA

  List paginated order history for the internal account linked to the API key, newest first. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Use when the user asks about past purchases, fulfillment, payouts, or delegates on their internal account. Read-only. Pair with `tronsave_internal_order_details` for a single order's full snapshot.

  ConnectorNo auth

• tronsave_internal_create_extend_requestA

  Tronsave MCP TestnetA

  Submit an extension request for existing delegated resources on TronSave, paid from the internal account. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Side effect: SPENDS internal TRX and creates an extension order; not idempotent. Use as STEP 2 after `tronsave_internal_extend_delegates` — pass its `extendData` rows unchanged. Returns `{ orderId }` for the new extension order.

  ConnectorNo auth

• tronsave_internal_order_historyA

  mcpA

  List paginated order history for the internal account linked to the API key, newest first. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Use when the user asks about past purchases, fulfillment, payouts, or delegates on their internal account. Read-only. Pair with `tronsave_internal_order_details` for a single order's full snapshot.

  ConnectorNo auth

• tronsave_internal_order_detailsA

  mcpA

  Fetch full details for one internal-account order by order ID. Requires a logged-in MCP session created by the `tronsave_login` tool: include `mcp-session-id: <sessionId>` returned by `tronsave_login` on subsequent MCP requests. Internal tools never accept API keys via tool arguments; signature sessions resolve the latest internal API key on demand, while api-key sessions reuse the validated key from login. Use when monitoring fulfillment after `tronsave_internal_order_create`, or when the user asks for status on a specific order id. Read-only. FRESHNESS: order state changes within seconds as the market matches — re-read immediately before acting.

  ConnectorNo auth

• discover_toolsA

  glimindA

  Find LIVE tools that can accomplish a task you describe in plain language — call this when you do NOT yet know which tool to use. Unlike find_alternatives / find_related_tools (which need a tool id you already have), this takes a free-text capability query (e.g. 'send a slack message', 'convert currency', 'search arxiv papers') and returns ready-to-use tool ids ranked by semantic similarity, filtered to tools that are live right now — each result carries the tool's advertised input schema, its actual connection endpoint (the MCP endpoint URL, or the package to launch for stdio servers), and whether it is FREE or PAID with the price + how to pay — so you can invoke it immediately without a second lookup or an MCP-registry search (on-demand / MCP-Zero style tool discovery). The discovery entry point at the start of a new task.

  ConnectorNo auth