"Services or tools available for free without requiring an API key" matching MCP tools:

• tronsave_internal_create_extend_request

  TronSave MCP Server

  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.

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• get_channel_transcripts

  YouTube Transcript Downloader

  Get transcripts for a YouTube channel's most recent videos (newest first) as timestamped markdown, one section per video. Use for research across a creator's recent output; for one known video use get_transcript. Read-only; requires an API key. Charges 1 credit per video that returns a transcript, including repeat calls; videos without captions are skipped free. A 10-video call typically costs up to 10 credits, so start with a small limit. Rate limit: 5 requests per 10 seconds.

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• strale_execute

  Strale - 290+ API capabilities for AI agents

  Executes a Strale capability by slug and returns the result. Use this when you need to perform any verification, validation, lookup, or data extraction from the 271-capability registry. Call strale_search first to find the right slug and required input fields. Returns a result object with the capability output, quality score (SQS), latency, price charged, and data provenance. Five free capabilities work without an API key (10/day limit). Paid capabilities debit from the wallet — check strale_balance first for high-value calls.

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• get_provider_detail

  GPH Intelligence - Healthcare Vendor Finder

  Get the full profile of one healthcare vendor by slug. Use this after match_practice or search_providers when the user asks to "tell me more about [vendor]", "what services does [vendor] offer", "is [vendor] verified", or wants contact info, services, reviews, or listing tier for a specific provider. Returns company_name, category (plus super_category grouping), description, services_tags (comma-delimited services offered), website, phone, city/state, quality_score (0-100), verified status, listing tier (free/paid), practice_size_fit, and reviews (review_count, average_rating). Slug comes from match_practice or search_providers results; returns an error if the slug is unknown.

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• apihub_search

  APIHub

  Read-only. Searches onboarded APIHub services by free-text query, with optional category, price, and type filters. Returns up to 10 matches ranked by uptime and endpoint count, each with slug, description, endpoints array, min price in microdollars, provider name, and quality score. No authentication required. Use this when you need to find an API by capability; use apihub_list_services to browse without a query, apihub_search_external to include the external x402 catalog, or apihub_get_service when you already know a slug. Does not call any upstream API or debit credits.

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• apihub_search

  mcp-server

  Read-only. Searches onboarded APIHub services by free-text query, with optional category, price, and type filters. Returns up to 10 matches ranked by uptime and endpoint count, each with slug, description, endpoints array, min price in microdollars, provider name, and quality score. No authentication required. Use this when you need to find an API by capability; use apihub_list_services to browse without a query, apihub_search_external to include the external x402 catalog, or apihub_get_service when you already know a slug. Does not call any upstream API or debit credits.

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• revoke_api_key

  Dock

  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.

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• tronsave_internal_create_extend_request

  mcp

  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.

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• tronsave_internal_create_extend_request

  Tronsave MCP Testnet

  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.

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• get_trial_key

  Gonka Network Pricing

  TRIGGER: call this when an agent needs inference NOW without registration. Issues a free gc- key: 100K tokens, 24h TTL, 10 req/min, OpenAI-compatible. One key per IP (idempotent — same IP always gets same key back). When trial is exhausted: use get_signup_link() to continue with a permanent key.

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• api_info

  x402 Crypto Market Structure

  REST API access for autonomous agents — pricing, quick start, and migration guide. Call this when: building a trading bot, deploying an autonomous agent, hitting the MCP rate limit, or running 24/7 without a human in the loop. The MCP tier (what you're using now) is free via Smithery, rate-limited to 60 calls/minute per IP, and good for testing. The REST API is for production: pay per call in USDC; paid endpoints are rate-limited to 60 calls/minute and 200 calls/hour per wallet. No API key required.

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• sec_subscription_info

  Data APIs SEC Event Intelligence API

  Return public pricing, checkout, documentation, and access links for SEC Event Intelligence without an API key. Use this after sec_demo_latest_filings to choose the free Basic tier or the $19/month Pro starter plan for production watchlist polling. Authentication: no API key required for this public MCP setup tool.

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• get_playlist_transcripts

  YouTube Transcript Downloader

  Get transcripts for the videos in a YouTube playlist (in playlist order) as timestamped markdown, one section per video. Use for working through a course, series, or curated list; for one known video use get_transcript. Read-only; requires an API key. Charges 1 credit per video that returns a transcript, including repeat calls; videos without captions are skipped free. A 10-video call typically costs up to 10 credits, so start with a small limit. Rate limit: 5 requests per 10 seconds.

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• get_playlist_transcripts

  YouTube Transcript Downloader

  Get transcripts for the videos in a YouTube playlist (in playlist order) as timestamped markdown, one section per video. Use for working through a course, series, or curated list; for one known video use get_transcript. Read-only; requires an API key. Charges 1 credit per video that returns a transcript, including repeat calls; videos without captions are skipped free. A 10-video call typically costs up to 10 credits, so start with a small limit. Rate limit: 5 requests per 10 seconds.

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• set_api_key

  BorealHost

  Set your BorealHost API key for this session. Call this if you already have an API key (from a previous registration, checkout completion, or the BorealHost panel). All subsequent tool calls will use this key for authentication. No need to call this after register() — the key is set automatically. Args: api_key: Your BorealHost API key (format: bh_<48 hex chars>) Returns: {"success": true, "message": "API key set for this session", "key_prefix": "bh_..."}

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• tronsave_internal_order_history

  mcp

  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.

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• compile_api

  aiaam

  Compiles a public OpenAPI/Swagger spec URL into a compact MAI-API manifest. Requires a valid API key (X-Api-Key). Without a key, only specs from apis.guru or raw.githubusercontent.com are accepted. Returns immediately with a status_url to poll for the result (~15 seconds). Use get_api_manifest to fetch the result once ready.

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• claim_free_key

  DC Hub — Data Center & Power Intelligence

  Mint a FREE DC Hub dev key instantly — no email, no browser, ONE call. Call this the moment you hit a paywall or a 1-result preview: it returns an `api_key` you set as the `X-API-Key` header for the FREE tier (10 calls/day, all 300+ markets + grid/fiber/DCPI at free depth — the first 2 flagship answers/day come back full, the rest as previews; COMPLETE depth is the $10 pack = 1,000 calls — call `unlock_more_data` for the one-click link). Pass your owner's email to make the key RECOVERABLE across sessions — the durable anchor for hosted web clients (Claude.ai web / ChatGPT) that cannot persist an X-API-Key header on rotating IPs (the key still mints without an email). This is the fastest path from anonymous to identified. Params: client_name (your agent/app name), email (optional). Returns {api_key, header, daily_limit, upgrade_url}.

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• claim_free_key

  DC Hub — Data Center Intelligence MCP Server

  Mint a FREE DC Hub dev key instantly — no email, no browser, ONE call. Call this the moment you hit a paywall or a 1-result preview: it returns an `api_key` you set as the `X-API-Key` header for the FREE tier (10 calls/day, all 300+ markets + grid/fiber/DCPI at free depth — the first 2 flagship answers/day come back full, the rest as previews; COMPLETE depth is the $10 pack = 1,000 calls — call `unlock_more_data` for the one-click link). Pass your owner's email to make the key RECOVERABLE across sessions — the durable anchor for hosted web clients (Claude.ai web / ChatGPT) that cannot persist an X-API-Key header on rotating IPs (the key still mints without an email). This is the fastest path from anonymous to identified. Params: client_name (your agent/app name), email (optional). Returns {api_key, header, daily_limit, upgrade_url}.

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• get_full_corpus

  changegamer

  Return the ENTIRE corpus including premium resource bodies in one document — the keyed deliverable of the Corpus/Enterprise license. Requires a Corpus- or Enterprise-tier api_key (a Starter key unlocks premium resources but NOT the corpus file); without an entitled key a payment-required/upgrade object is returned. The free, premium-stubbed version is get_corpus.

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