"An example MCP for client prototyping in a business context with a public API call" matching MCP tools:

• tronsave_login

  TronSave MCP Server

  Authenticate with TronSave and create a server session. Returns `{ sessionId, walletAddress?, expiresAt }` — pass `sessionId` as the `mcp-session-id` header on every subsequent MCP request. `walletAddress` is set only for signature-mode logins. Two modes: (1) wallet signature (preferred for platform tools) — call this tool with `signature_timestamp` formatted as `<signature>_<timestamp>`, where `<signature>` must be produced client-side by signing the timestamp message; you may optionally call `tronsave_get_sign_message` to obtain a helper message/timestamp pair; (2) API key (internal tools) — pass `apiKey` (raw key, no prefix). Side effect: creates a new session on the server. Wallet signing must happen client-side; never send private keys to the server.

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• tronsave_sell_order_manual

  Tronsave MCP Testnet

  Manually execute seller-side fulfillment of an existing order with a wallet `signedTx`. Returns the updated order payload after sell. Side effect: broadcasts a market/delegation transaction and may consume balances/resources; not idempotent — each call re-executes. Backend requires a signature session and `mcp-session-id`; the MCP gate is `public` to allow anonymous read-fallthrough, but the GraphQL helper rejects api-key-only sessions. Use only when explicit manual sell is intended; call `tronsave_get_order` first to verify order state before signing.

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• zaira_get_docs

  Zaira Labs Guide

  Retrieve reference documentation for the Zaira Guide API and MCP server on demand. Topics: - getting_started — how to connect via MCP or REST, first queries - endpoints — full REST endpoint reference with parameters - mcp_tools — MCP tool reference with when-to-use guidance and a routing matrix - schema — the tool entry schema - errors — error taxonomy for REST (RFC 9457) and MCP (JSON-RPC) Call with no topic to get an index of available topics. Returns: the requested topic as a Markdown-KV block. With no topic, returns an index listing all available topics with short descriptions; call again with the relevant topic for the full content. Examples (topic selection): - "How do I call the REST API?" → {topic: "getting_started"} - "What parameters does /tools accept?" → {topic: "endpoints"} - "What fields are in a tool entry?" → {topic: "schema"} - "What error shapes do I handle, and what are the recovery steps?" → {topic: "errors"} - "Which MCP tool fits my task?" → {topic: "mcp_tools"} Edge cases: - No topic argument is valid — you get the index. This is the deferred-loading path; don't load every topic at once. - Topic must match the enum exactly (lowercase, underscore). "getting-started" with a hyphen is rejected as an unknown parameter. Risk: read-only, closed-world, idempotent — no state change possible.

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• product_api

  1inch MCP

  [Requires authentication] Call the authenticate tool first to start or confirm 1inch Business login (initialize 200 is still anonymous). If authenticate or this tool returns HTTP 401, complete OAuth, then retry. Call any 1inch product API endpoint using the authenticated user's credentials (base URL is the unified gateway, e.g. https://api.1inch.com). Call authenticate first. Anonymous sessions get HTTP 401 (OAuth), not x402. After a real org login, quota-exhausted routes may return a PaymentRequired tool result; retry with a signed payment in _meta["x402/payment"] (batch-settlement scheme only — see file://1inch-mcp/guides/x402-payments). Do not treat PaymentRequired as login. Optional: if your client can read MCP resources, file://1inch-mcp/guides/api-index has live Swagger links and extra gateway notes (mirrors business.1inch.com/portal/llms.txt). Common chain IDs: Ethereum=1, BNB=56, Polygon=137, Arbitrum=42161, Optimism=10, Base=8453, Avalanche=43114, Gnosis=100, zkSync=324, Linea=59144, Sonic=146, Unichain=130, Cronos=25, Monad=10143, Solana=501 (where applicable). Gateway products (use these path prefixes with this tool): - Portfolio: /portfolio/portfolio/v5.0/... — example path="/portfolio/portfolio/v5.0/general/current_value", query={"addresses":"0x..."}; token metrics path="/portfolio/portfolio/v5.0/tokens/metrics", query={"addresses":"0x...","timerange":"1year"} - Balance: /balance/v1.2/{chainId}/... — example path="/balance/v1.2/1/balances/0x..." - Spot Price: /price/v1.1/{chainId} — example path="/price/v1.1/1", method="POST", body={"tokens":["0x..."],"currency":"USD"} - Token: /token/v1.4/{chainId}/... — example path="/token/v1.4/1/search", query={"query":"USDC"} (prefer v1.4; older v1.2 chain search is deprecated in OpenAPI) - Token Details: /token-details/v1.0/details/{chain}/{tokenAddress} — example path="/token-details/v1.0/details/1/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48" - Gas Price: /gas-price/v1.6/{chainId} — example path="/gas-price/v1.6/1" - Swap (Classic): /swap/v6.1/{chainId}/... — example path="/swap/v6.1/1/quote", query={"src":"0x...","dst":"0x...","amount":"..."} (exact query names per OpenAPI) - Orderbook: /orderbook/v4.1/{chainId}/... — example path="/orderbook/v4.1/1/all", query={"page":"1","limit":"10"} - Fusion (Intent): /fusion/orders/v2.0/..., /fusion/quoter/v2.0/..., /fusion/relayer/v2.0/... — example path="/fusion/quoter/v2.0/1/quote/receive" with required query params from spec - Fusion+ (Cross-chain): /fusion-plus/orders/..., /fusion-plus/quoter/..., /fusion-plus/relayer/... — example path="/fusion-plus/quoter/v1.2/quote/receive" with required params; equivalent routes also exist under /cross-chain/orders|quoter|relayer - History: /history/v2.0/history/{address}/events — example path="/history/v2.0/history/0x.../events", query={"chainId":"1","limit":"50","tokenAddress":"0x..."} (optional tokenAddress filters by contract; response shape uses items[].details.txHash — not raw event logs) - Traces: /traces/v1.0/chain/{chainId}/block-trace/{blockNumber}/tx-hash/{txHash} — example path="/traces/v1.0/chain/1/block-trace/18000000/tx-hash/0x..." (not /transaction/{hash}) - NFT: /nft/v2/... — example path="/nft/v2/byaddress", query={"chainIds":"1","address":"0x..."} - Charts: /charts/v1.0/chart/line/{token0}/{token1}/{period}/{chainId} — example path="/charts/v1.0/chart/line/0x.../0x.../24H/1" (period: 24H, 1W, 1M, 1Y, AllTime; not a separate timerange query) - Domains: /domains/... — example path="/domains/v2.0/lookup", query={"name":"vitalik.eth"} - Aqua (strategy analytics): /aqua/v1.0/strategies/... — example path="/aqua/v1.0/strategies/opened", query={"limit":"100"}; maker stats path="/aqua/v1.0/strategies/makers/0x.../stats". Prefer the dedicated "aqua" tool when Unleash flag mcp-service.tool.aqua is enabled; otherwise use product_api for raw HTTP. - Tx Gateway: /tx-gateway/... — example path="/tx-gateway/v1.1/1/broadcast", method="POST", body={...} - Web3 RPC: /web3/{chainId}/... — JSON-RPC over HTTP POST to an EVM (or Solana 501) node; Gateway exposes e.g. 1,10,25,56,100,130,137,143,146,324,501,8453,42161,43114,59144 — confirm availability for your org/plan. Example path="/web3/1", method="POST", body={"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]} Gotchas: Portfolio gateway path repeats "portfolio" (/portfolio/portfolio/v5.0/...) because the gateway strips the first segment. Spot Price returns WEI in native currency unless you set currency. Token list responses are large; prefer search. Token Details does not support native ETH pseudo-address 0xeeee...eeee; use WETH. Balance responses may include zero balances—filter client-side. For limit order flows (build, sign, create, cancel), prefer the "orderbook" tool. For swap execution, prefer the "swap" tool. Use product_api for direct REST access to any endpoint.

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• send_fax

  SendThisFax

  Submit an uploaded PDF for faxing. Step 1 (before this tool): upload the PDF over plain HTTP multipart, using any HTTP client you have — shell, JavaScript fetch with FormData, Python, etc.: curl -F "file=@document.pdf" https://www.sendthisfax.com/api/upload fetch("https://www.sendthisfax.com/api/upload", {method: "POST", body: formDataWithFile}) The response contains fax_public_id and page_count. PDFs must be unencrypted, at most 50 MB and 1000 pages. Step 2: call this tool with the fax_public_id and the recipient fax number. Two modes: - With an API key (Authorization: Bearer stf_live_... on this MCP connection): the fax price is debited from the prepaid credit balance and sending starts immediately — no checkout, no browser. sender_email and billing_country are optional (they default to the key's records). Buy credits at https://www.sendthisfax.com/en/credits. - Without an API key: sender_email and billing_country are REQUIRED and the tool returns a checkout_url the USER must pay in a browser; the fax is sent automatically once paid. In both modes, poll get_fax_status until status reaches "delivered" or "failed" (failures after payment are auto-refunded). For integration testing, +19898989898 is the designated test recipient number.

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• audio.transcribe

  Agent402.Tools: pay-per-call web tools

  [wallet-required, $0.030/call] Transcribe audio to text using OpenAI (gpt-4o-mini-transcribe). Provide a URL to an audio file (mp3, wav, m4a, etc.) and get back the transcript. No API key needed; pay per call via x402. Max 5 minutes of audio, 25 MB file size. Returns { model, provider, text, language, duration }. This hosted connector holds no wallet: pay it here over MPP, or run npx agent402-mcp with a funded wallet (AGENT_KEY) or prepaid card credits (AGENT402_CREDITS_KEY), or any x402 client.

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• check_mcp_server

  MCP Surface Lint

  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.

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• open_player

  qencode

  Open an inline Qencode video player in the chat for a playback URL. Renders an interactive player (MCP Apps UI component) so the user can watch a transcoded result without leaving the conversation. Use this after a job completes — pass a playback URL from `get_job_status_detailed`: a progressive file (`.mp4` / `.webm`) or an HLS/DASH manifest (`.m3u8` / `.mpd`). A manifest MUST be a PUBLIC URL. A presigned one is rejected, because the signature covers only the playlist while its segments are relative and would 403 (the player would spin forever). For a Media Storage object build `https://<bucket>.media-storage.<region>.qencode.com/<key>` instead of calling `get_download_url`, which always presigns. Progressive files are fine either way — one object, one signature. It resolves the per-user Qencode Player license key (a public client-side site-key) via the portal bridge and hands it to the widget; the actual playback happens client-side in a sandboxed iframe. Args: source_url: https:// URL to play — mp4, webm, or an HLS/DASH manifest. A presigned manifest URL is rejected; pass a public one. poster_url: optional https:// image shown before playback starts. source_type: optional MIME hint, e.g. "video/mp4", "video/webm", "application/x-mpegURL" or "application/dash+xml". The player infers a sensible default when omitted. title: optional display title for the player. Allowed playback origins depend on the client's sandbox CSP. Videos hosted in Qencode storage (`*.qencode.com`, Qencode CDN / `*.cloudfront.net`) play on every client; an external origin plays on some hosts and is blocked on others. This tool knows which policy applies, so ALWAYS CALL IT for a playback URL — including an external mp4/webm. Never refuse up front or guess from the client name: on a permissive host that refusal would be wrong. If the tool DOES reject the URL, do NOT try to fix it automatically (no repack / transcode / upload behind the user's back). - Presigned manifest: re-open the player on the public URL of the same playlist (see above). Do not transcode to mp4 to dodge it. - External origin on a strict client: tell the user only Qencode-storage videos can be viewed in this client, and OFFER to create a Qencode Media Storage bucket and upload the video into it (`create_bucket` then `download_url_to_bucket` — server-side ingest, no re-encode); once they agree, open the player on the resulting Qencode URL. When the result carries a non-null `client_note`, pass its point on to the user in the same reply. It describes how THIS client presents the player — e.g. hosts that put the widget in a collapsed tool-call block, where the user sees no video until they expand it. Note: only public / temporary-storage outputs are supported for now. Signed-cookie / DRM playback does not work inside the chat sandbox yet.

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• agent_readiness_scan

  Moltline Agent Governance

  Score a public domain against 21 agent-readiness checks. FREE. Use when you need to know whether an autonomous agent can discover, read, use or pay a website - your own, or a vendor you are evaluating before recommending it. Typical input {"domain": "example.com"} returns {"score": 8, "total": 21, "grade": "F", "passed": [...], "failed": [{"title": "...", "detail": "...", "fix": "..."}], "report_url": "..."} where report_url is a permanent shareable page for the same result. Not for auditing an MCP client configuration (audit_mcp_config) and not for scanning text for injection (injection_scan) - this one reaches out over the network and fetches public URLs on a live domain. Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"} (for example {"error": "The readiness scanner is not reachable right now."}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

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• signup

  Keelen

  Create a Keelen account (or start agent login) — emails a 6-digit code. UNAUTHENTICATED — the only tool besides verify_email that works before a bearer key is configured. `email` is where the code is sent. Flow: signup(email) -> the user reads the 6-digit code from their inbox -> verify_email(email, code) returns a reveal-once API key -> save it as this server's `Authorization: Bearer <api_key>` header in your MCP client config -> reconnect -> get_onboarding_status() to continue setup. The code expires in 15 minutes; call signup again to resend. Response is uniform whether or not the email already has an account (enumeration-safe), so signup doubles as agent LOGIN. Rate-limited per IP and per email. ASK THE USER for `email` in chat and WAIT for their answer before calling this. Do NOT infer it from your client profile, the logged-in account, git config, or any other ambient source; if you already hold a candidate, echo it back and get an explicit yes first. Because this call doubles as LOGIN, a guessed address signs the user in to whatever workspace owns it, and the rest of setup then mints an API key on, and creates a project in, an account they did not choose.

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• request_project_quote

  agent-gateway

  Creates and immediately sends an external project inquiry to a private Relux Works Telegram chat for human review. Do not call it to test the connector or demonstrate MCP. Build the summary from known conversation context, ask only for missing details, obtain a real user-provided or user-confirmed reply route to the decision maker or an accountable relay agent, and show the complete draft including that route. Before calling, provide https://relux.works/en/privacy-policy/ and obtain explicit user consent. Never invent or infer contact details. The current MCP chat is not a reply route. A human replies within one business day with a recommended package and a fixed-price quote.

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• list_paired_models

  ReliaStats

  Return the catalog of paired models — concrete real-world systems that live in two ChiAha sandboxes simultaneously, one for dynamics (DES via ReliaSim) and one for statistics (distribution fitting + validation via ReliaStats). Today: a single paired model — the bottling line. Returns canonical model IDs + cross-MCP routing metadata (which ReliaSim chapter, which ReliaSim MCP tools, which ReliaStats mode consumes which file shape). Use when a user asks about cross-MCP workflows, paired sandboxes, or the bottling-line example. ANTI-FABRICATION: this is a soft-reference catalog — to actually run a simulation, the LLM client calls ReliaSim's MCP tools directly.

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• tronsave_update_order

  TronSave MCP Server

  Update an open order by `orderId` with partial fields (`receiver`, `newPrice`). Returns the updated order payload. Side effect: overwrites live order parameters; not idempotent — each call with a different `newPrice` produces a new state. Backend requires a signature session and `mcp-session-id`; the MCP gate is `public` to allow anonymous read-fallthrough, but the GraphQL helper rejects api-key-only sessions. Prefer this over cancel+recreate when only price/receiver should change. Verify state with `tronsave_get_order` first; fails for already-fulfilled, already-cancelled, or non-editable orders.

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• tronsave_login

  Tronsave MCP Testnet

  Authenticate with TronSave and create a server session. Returns `{ sessionId, walletAddress?, expiresAt }` — pass `sessionId` as the `mcp-session-id` header on every subsequent MCP request. `walletAddress` is set only for signature-mode logins. Two modes: (1) wallet signature (preferred for platform tools) — call this tool with `signature_timestamp` formatted as `<signature>_<timestamp>`, where `<signature>` must be produced client-side by signing the timestamp message; you may optionally call `tronsave_get_sign_message` to obtain a helper message/timestamp pair; (2) API key (internal tools) — pass `apiKey` (raw key, no prefix). Side effect: creates a new session on the server. Wallet signing must happen client-side; never send private keys to the server.

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• tronsave_update_order

  Tronsave MCP Testnet

  Update an open order by `orderId` with partial fields (`receiver`, `newPrice`). Returns the updated order payload. Side effect: overwrites live order parameters; not idempotent — each call with a different `newPrice` produces a new state. Backend requires a signature session and `mcp-session-id`; the MCP gate is `public` to allow anonymous read-fallthrough, but the GraphQL helper rejects api-key-only sessions. Prefer this over cancel+recreate when only price/receiver should change. Verify state with `tronsave_get_order` first; fails for already-fulfilled, already-cancelled, or non-editable orders.

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• list_capabilities

  eDiscovery Decoder News/Calc

  List the full eDiscovery Decoder MCP surface — every tool, prompt, and resource, plus the suggested demo flow and safety boundaries — with an example prompt for each. Call this first when you are unsure which tool fits the user's question, or when tool-search shows only a partial list.

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• engage_sasame

  SaSame MCP Observatory + Gold Rush Town

  Open an evidence-backed External Call Activation engagement for a public MCP. Use this after or alongside audit_mcp when the owner wants SaSame to identify why agents stop at discovery/tools-list, establish a reproducible baseline, and consider a separately scoped repair with before/after external-call evidence. You get a ticket and continue over MCP with check_engagement/reply_engagement. Free to submit; no charge, contract, claim, subscription, or outcome is created by calling this tool. Do not paste secrets, credentials, or private payloads.

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• getMyBusinessProfile

  Nomad Stays

  Get the host account's business profile: legal business name, VAT/business registration numbers, whether registered as a business entity. Does NOT include bank or tax-ID details — those are never exposed via MCP. Call this before updateHostBusinessProfile. Requires NOMADSTAYS_MCP_AGENT_TOKEN.

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• skimguard_my_locations

  skimguard

  Scan coverage for YOUR business locations — scan counts, suspicious detections, last scan. REQUIRES the SkimGuard Business tier. You are not signed in to an account with it. Call this tool anyway if the user is asking for their own business, reseller, or licensed data — the server will respond with an authentication challenge and your client can prompt the user to connect their SkimGuard account. Do not fabricate an answer instead.

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• skimguard_my_earnings

  skimguard

  YOUR commission totals and payout status as a SkimGuard reseller. REQUIRES the SkimGuard Partner tier. You are not signed in to an account with it. Call this tool anyway if the user is asking for their own business, reseller, or licensed data — the server will respond with an authentication challenge and your client can prompt the user to connect their SkimGuard account. Do not fabricate an answer instead.

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