Pulse Verity Index

Signed, verifiable crypto index prices for developers, AI agents and bots.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Get Index Price: Get a current signed crypto index price from /api/index/v1/price. Returns symbol, price, optional priceText, at, grade, signature, kid and sig. Preserve priceText exactly for verify_p
  • Get Index Batch: Read up to 100 crypto symbols in one /api/index/v1/batch request. Returns observations with individually signed successful rows and per-symbol errors for unavailable rows. Your API ti
  • List Index Assets: Read one bounded page from /api/index/v1/verity/catalog. Discover crypto symbols and their current coverage status and measured cadence. Catalog rows, prices and metadata are unsign

What data it sees

Do you need an account

No: the server works without sign-in

Signed, verifiable crypto index prices for developers, AI agents and bots. Five read-only tools for current prices, batch reads, asset discovery, recorded settlement prints and ECDSA signature verification.

Try BTC, ETH and SOL without an API key using the public pulse-verity npm package. This hosted MCP connection requires a Pulse developer sign-in or API key. A free key unlocks the catalogue, batch reads and settlement prints, subject to usage limits. Coverage and freshness vary by asset.

Get started: https://thepulse.markets/developers?ref=smithery

How to connect

How to connect Pulse Verity Index to Claude

The server address to paste into Claude settings:

https://pulse-verity--pulse.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Pulse Verity Index to ChatGPT

The server address to paste into ChatGPT settings:

https://pulse-verity--pulse.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Pulse Verity Index to Cursor

The server address to paste into Cursor settings:

https://pulse-verity--pulse.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (5)

Raw names from tools/list. Only developers need these.

get_index_priceGet a current signed crypto index price from /api/index/v1/price. Returns symbol, price, optional priceText, at, grade, signature, kid and sig. Preserve priceText exactly for verify_print. Optional tier, confidence, dispersionBps, interval, sources, engine and cadence describe the observation but are not covered by the v1 signature. Coverage changes: use list_index_assets to discover assets. A stale or unavailable response means no current price, never zero.
get_index_batchRead up to 100 crypto symbols in one /api/index/v1/batch request. Returns observations with individually signed successful rows and per-symbol errors for unavailable rows. Your API tier may allow fewer symbols. Verify each successful row with verify_print; surrounding batch and quality metadata are not signed. No automatic retries.
list_index_assetsRead one bounded page from /api/index/v1/verity/catalog. Discover crypto symbols and their current coverage status and measured cadence. Catalog rows, prices and metadata are unsigned: use get_index_price or get_index_batch for signed receipts. Availability changes; total is a catalog count, not a count of fresh prices. No automatic pagination.
get_settlement_printGet the recorded signed index print nearest a requested time from /api/index/v1/print. Accepts ISO-8601 or epoch milliseconds. Check deltaMs: it is the distance between your requested time and the sampled print. Sampling and retention are bounded; a recorded print need not equal a separate live read. Preserve priceText and kid when present for verify_print. deltaMs and other metadata are not signed.
verify_printVerify a signed print locally with ECDSA P-256/SHA-256. Canonical bytes are pulse-index-v1\n<symbol>\n<priceText or String(price)>\n<at>\n<grade>. The public key ring is read from /api/index/v1/pubkey, cached for five minutes and refreshed at most once per 30 seconds on a failed check. A supplied kid selects only that exact key; old prints without kid are tried against the bounded published ring. valid=true authenticates only the canonical price fields, not kid, sig, quality, cadence, timestamps outside at, or other metadata. An invalid signature can mean an altered print or a key no longer published; it does not by itself prove tampering.