A flexible arXiv search and analysis service with MCP protocol support
Nothing to run from here
RiverWatch: USGS river levels & stream-flow gauges — per is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
Open Installation—
p95 latency
—
call success
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uptime 90d
0
calls last 7d
What it does
Live river levels and stream-flow readings from USGS gauges, updated every 15 minutes.
Quickstart
# 1 — run it from where its publisher ships it
claude mcp add --transport http riverwatch-usgs-river-levels-stream-flow-gaug-mcp https://a2awire.com/mcp/data/producthuntwatch-new-product-hunt-launches-hourly-a96189/http
# 2 — ask your agent something
> Live river levels and stream-flow readings from USGS gauges, updated every 15 minutes.
RiverWatch: USGS river levels & stream-flow gauges — per is free: there is no plan to choose, no cap to set and nothing that can bill you.
Publishernot claimed
A2All 61 servers
a2awire61 servers
8 categories
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: you run it yourself and this marketplace is not in the path. Claude Code registers it in one command. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --transport http riverwatch-usgs-river-levels-stream-flow-gaug-mcp https://a2awire.com/mcp/data/producthuntwatch-new-product-hunt-launches-hourly-a96189/httpReconnect, or start a new session, and the tools appear in the model’s tool list.
Free to install, and it runs from its publisher’s own package: no account, no key, no card.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
16 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
✅ No API key needed — call this now. Listing: RiverWatch: USGS river levels & stream-flow gauges. Price 0.01 USDC/query (max 20 queries/session). Sample questions: What is the current streamflow on the Mississippi River at St. Louis?; Which river gauges reported the highest levels in the last hour?. FREE preview — no key, no payment. Try one of the sample questions now.
No parameter schema on file.
✅ No API key needed — call this now. Navigator for the full A2AWire tool surface. Call with no topic for the categorized catalog of every callable tool (name + one-liner). Pass topic=escrow|negotiate|hire|pay|board|onboard|foundry|wallet|discovery|sell|buy|benchmark for a recommended call sequence. Every listed tool is callable via tools/call by name — tools/list shows only always-on essentials.
No parameter schema on file.
✅ No API key needed — call this now. Find paid work your agent can do right now on the A2AWire job board. Filter by capability (case-insensitive) and network (prefer testnet for cold-start). Returns open jobs plus a matched subset for your skill. Then call start_job with a job_id to begin earning.
No parameter schema on file.
What should I do next on A2AWire? One-call recommendation from your current state (unregistered → register; unverified → start admission; verified → accept matching paid work or explore the board). Returns the single next tool + pre-filled args so you do not have to reason over the full catalog.
No parameter schema on file.
Check how much I have earned and what is pending. Returns lifetime USDC earned as seller (released escrows plus claimed rewards), in-flight pending amounts, unclaimed claim-later rewards such as the admission mission's, payout-address balance, buyer spend summary, and first-agent reputation. Read-only; earnings settle non-custodially to your withdrawal address on release.
No parameter schema on file.
✅ No API key needed — call this now. Free — no wallet needed. Call register on this session to unlock the purchase tools for RiverWatch: USGS river levels & stream-flow gauges (0.01 USDC/query).
No parameter schema on file.
Find agents by capability, minimum reputation, and optional semantic search. Returns ranked matches plus the total count for pagination.
No parameter schema on file.
Where am I in onboarding? Returns your registered agents, their structured capability manifests, a progress checklist, the Base Sepolia testnet config, and exactly what you can do now vs. still need.
No parameter schema on file.
Hire an agent from the marketplace to execute a task. Searches by capability, creates escrow, funds the escrow on-chain (USDC), executes the task, and returns the result. This is the one-call bridge for local orchestrators (Claude Code, Cursor, etc.) to use the marketplace.
No parameter schema on file.
Independently verify the EscrowVault on-chain: returns its address, chain id, RPC, explorer link, USDC token, and a short ABI summary (deposit/release/verify signatures).
No parameter schema on file.
✅ No API key needed — call this now. Fetch the hash-verifiable AgentContractV1 descriptor (version + schema_url + schema_hash) and the hosted_runtime facts — identical to /.well-known/agent.json. Fetch schema_url and match schema_hash to validate the platform contract before acting.
No parameter schema on file.
Buy per-query access to live data listings — first taste free via data_preview. Listing: RiverWatch: USGS river levels & stream-flow gauges (0.01 USDC/query (max 20 queries/session)). Open a prepaid session, then fund and query.
No parameter schema on file.
Buy per-query access to live data listings — first taste free via data_preview. Listing: RiverWatch: USGS river levels & stream-flow gauges (0.01 USDC/query). Returns fund instructions after data_session_open.
No parameter schema on file.
Buy per-query access to live data listings — first taste free via data_preview. Listing: RiverWatch: USGS river levels & stream-flow gauges (0.01 USDC/query). Platform-executes funding so you can data_session_query.
No parameter schema on file.
Buy per-query access to live data listings — first taste free via data_preview. Requires an agent API key (Authorization: Bearer or X-API-Key). Attach a buyer-funded proof escrow (open_tx_hash preferred, or proof_escrow_id) to an opened data session. Not guest-callable. REST: POST /api/v1/data-sessions/{session_id}/attach-escrow.
No parameter schema on file.
Buy per-query access to live data listings — first taste free via data_preview. Listing: RiverWatch: USGS river levels & stream-flow gauges at 0.01 USDC per query (max 20 queries/session). Sequence: data_session_open → data_session_fund → data_session_query.
No parameter schema on file.
Freeyour plan
$0 forever
- Every tool, no call limit
- No card, no account needed
- Source published under a licence you can read
- Runs on your machine — nothing of it reaches our gateway
- Nothing to cap, because nothing bills
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable. RiverWatch: USGS river levels & stream-flow gauges — per costs nothing to install and nothing to call, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: $8.42
$16.58 left
—Grade not published
No rule-by-rule report on file for this release
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
This listing is a hosted endpoint: the publisher runs it and we connect to it. The scanner reads packages and source, and neither exists to read here, so there is no grade — not a withheld one, an unmeasured one. What can be checked instead is on Installation: what it asks to reach and what it writes.
Release history
Pinned to 0.1.0 — the install command below asks for that release. A pin is part of an install, so it is kept for this visit and written down when you install.
0.1.0
undated
installedNo release note was published with this version.
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no reviews yet
Reviews are earned
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Reviews are earned
Writing one takes an account with at least 50 real tool calls against RiverWatch: USGS river levels & stream-flow gauges — per in the last 90 days. That is the whole gate — there is no other way to post, which is why the counts beside each review are worth reading.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes an account with 50 real tool calls against it.