Kairos Signal MCP Server

by kairossignal Your server? Claim it

answering

Kairos Signal is answering right now. Last checked 6 min ago. It exposes 11 tools.

Verifiable DePIN telemetry: 501 symbols, 372 networks, 11,100 live series. Every value verifiable.

Uptime history 52 days of history · worst day 37%

52 days agonow

95.6%

Uptime 24h

87 of 91 checks

Tools

read from the server

629 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 33

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.

21 Sep a tool description was rewritten register_agent

17 Sep a tool changed the parameters it asks for purchase_data

14 Sep 2 tool descriptions were rewritten register_agent, topup_credits

14 Sep a tool changed the parameters it asks for topup_credits

13 Sep 3 tool descriptions were rewritten list_products, purchase_data, register_agent

12 Sep 2 tool descriptions were rewritten3 times that day register_agent, topup_credits

12 Sep a tool changed the parameters it asks for topup_credits

11 Sep a tool disappeared get_zk_provenance

8 Sep a tool description was rewritten register_agent

6 Sep 3 tool descriptions were rewritten fetch_dataset, topup_credits, verify_footprint

and 17 more, back to 9 August 2026

Kairos Signal does not always answer

Over the last week it answered 97.2% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add kairos-signal --transport http https://kairossignal.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "kairos-signal": {
      "url": "https://kairossignal.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.kairos-signal]
url = "https://kairossignal.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "kairos-signal": {
      "url": "https://kairossignal.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "kairos-signal": {
      "url": "https://kairossignal.com/mcp"
    }
  }
}

Available tools 11

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

balance

check_balance

Check your remaining credit balance. Use after purchases to see remaining credits.

data

get_data_dictionary

ONBOARDING SPEC: freshness, history depth, coverage and endpoints per feed (depin_onchain, depin_daily, health_profiles, signal_ledger, market_ticks, zk_footprints). Machine-legible; answers 'how stale is this and how far back does it go' for every feed. Free, no key.

dataset

fetch_dataset

Query records from a dataset with limit/offset. Free tier: 10 records per query. For depin_onchain, raw archived observations, including rejected rows, are retained. observation_quality reports limited PKT airdrop checks; not_checked means not validated. This read-time annotation is not covered by original proof hashes.

datasets

list_datasets

List all available datasets with record counts. Free to browse — market ticks, DePIN network stats, technical indicators, US county atlas, ZK footprints.

derivation

get_derivation_ledger

DERIVATION TRUTH: raw upstream payloads, SHA-256-pinned, with the exact collector code hash for each fetch. Replay any published value: fetch the verify_url yourself, run the pinned code, compare. Answers 'a hash proves a footprint, not the derivation' — divergence from origin is mechanically detectable. Free.

products

list_products

Browse purchasable products with prices in credits ($1 = 1 credit). DePIN supply-telemetry, provenance, derivation-replay, history, grades and the intel bundle are BUYABLE NOW from $0.49. Signal-feed tiers, DAG-manifold tiers and mcp_unlimited are priced but NOT yet purchasable: their entitlement is not wired into the serving API, so purchase_data refuses them with 503 not_yet_deliverable rather than charging you for nothing. Call after register_agent.

purchase

purchase_data

Buy a product with your credits; the data ships inline in the response. Deliverable today: the whole depin_* family plus depin_intel_bundle — call list_products for the live prices rather than trusting a figure restated here, which is how a price in a second place drifts from the first. The signal_*, dag_* and mcp_unlimited keys are priced but return 503 not_yet_deliverable — they are deliberately blocked, not broken, because nothing grants their entitlement yet. Credits buy DATA; they do not change your access tier. Use api_key from register_agent.

register_agent

START HERE. One call: get an API key instantly (no card, no human, no Stripe, ~5 seconds) plus $5 free credits, no card (first 3 keys per IP per 30 days). Past that per-IP limit a key is still created, at $0, and the response says so — it is never a silent zero. Works immediately: query live DePIN telemetry (498 symbols, every value carries a verify_url you can check yourself), GPU inference, DAG manifold. Try get_data_dictionary first if you want the coverage spec, or GET https://kairossignal.com/try with zero setup. Nothing to cancel; credits just sit there until you spend them. Then list_products to see what $0.49+ buys.

stats

get_stats

Get aggregate statistics from the databases

topup

topup_credits

Add credits. Card (one call): {"method": "stripe", "amount": N} where N is $20 or $99 — returns a Stripe checkout_url already bound to your api_key, and credits post automatically once Stripe confirms payment at $1 = 1 credit. No human step and no wallet needed. USDC on Base ({"method": "usdc"}) is also accepted but requires more work: verify your sender first via POST /v1/credits/crypto/challenge and /verify with X-API-Key, sign the returned challenge with your own EOA, then pass the verified from_address and send only after a successful quote — credit requires finalized Base evidence. Instructions: https://kairossignal.com/docs/crypto.html

verify

verify_footprint

Retained Merkle-membership check for one depin_onchain observation: stamp_day (YYYYMMDD), leaf_index (0-based row in /attestations/batch_<day>.tsv), expected_row_sha256. verified=true ONLY when the row at that index hashes to expected_row_sha256 AND its inclusion path reaches that day's manifest merkle_root. Says nothing about Bitcoin status or upstream accuracy. Other datasets: unsupported (no retained proof).

Tools removed

Tools this server used to expose. Anything built against them stopped working on the day they went.

get_zk_provenance

removed 11 Sep 2026

Endpoints

URL	Transport	State	Latency	Checked
https://kairossignal.com/mcp	streamable-http	answering	454 ms	6 min ago

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Kairos Signal — questions

Answers built from our own checks of this server.

What can Kairos Signal do?

It exposes 11 tools, read directly from the server on our last check. Among them: check_balance, fetch_dataset, get_data_dictionary, get_derivation_ledger, get_stats, list_datasets and 5 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Kairos Signal working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 87 of 91 checks got a reply (95.6%), average response time 629 ms. The bar chart above shows every period we have measured.

Did Kairos Signal ever remove tools?

Yes. get_zk_provenance is no longer exposed — we recorded the date each one disappeared. A tool vanishing usually means a breaking change for anything that depended on it.

How do I connect Kairos Signal?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Kairos Signal need an API key?

No. Kairos Signal completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 11 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Kairos Signal?

It answers our handshake in 629 ms on average, which is faster than 23% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.