io.github.pairbook-io/pairbook-mcp
NPM · PAIRBOOK-MCP · SCANNED SEP 20
Portfolio risk analysis, correlation and ETF overlap for 4,700+ US stocks and ETFs. Free, no key.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 96 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency19
- Repository check failed: the declared repository URL returned HTTP 404. See how to fix → View diagnostics → Fail
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 21 days ago).Pass
- Security-disclosure policy not yet verified: we couldn't inspect the source repository.Unverified
Schema Quality & AI Usability76
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 957 tokens (~159/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management73
- Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the io.github.pairbook-io/pairbook-mcp server?
io.github.pairbook-io/pairbook-mcp runs locally as an npm package, launched with npx -y pairbook-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · pairbook-mcp
claude mcp add pairbook-io-pairbook-mcp -- npx -y pairbook-mcp
{
"mcpServers": {
"pairbook-io-pairbook-mcp": {
"command": "npx",
"args": [
"-y",
"pairbook-mcp"
]
}
}
} {
"servers": {
"pairbook-io-pairbook-mcp": {
"command": "npx",
"args": [
"-y",
"pairbook-mcp"
]
}
}
} codex mcp add pairbook-io-pairbook-mcp -- npx -y pairbook-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"pairbook-io-pairbook-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"pairbook-mcp"
],
"enabled": true
}
}
} openclaw mcp add pairbook-io-pairbook-mcp --command npx --arg -y --arg pairbook-mcp
mcp_servers:
pairbook-io-pairbook-mcp:
command: "npx"
args: ["-y", "pairbook-mcp"] {
"McpServers": {
"pairbook-io-pairbook-mcp": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"pairbook-mcp"
]
}
}
} assistant mcp add pairbook-io-pairbook-mcp -t stdio -c npx -a -y pairbook-mcp
{
"mcpServers": {
"pairbook-io-pairbook-mcp": {
"command": "npx",
"args": [
"-y",
"pairbook-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 19 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.
- 15 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.
- 8 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 6 Sept 26 +4
- Stability: unverified → 0.27 ▲ functional
- 31 Aug 26 −1
- Security disclosure: pass → unverified ▼ functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed npm/pairbook-mcp@1.3.1
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 96 packages
| Packages resolved | 96 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
analyze_portfolio Analyze a portfolio ~222
Whole-portfolio risk and diversification analysis for 2 to 30 US stocks or ETFs: which positions are redundant, where the risk concentrates (Euler risk contributions), what actually diversifies, portfolio volatility, beta and market R2, diversification ratio, effective number of independent bets, correlation blocks that move together, max drawdown of the mix vs SPY, and issuer-sourced holdings-overlap warnings between the ETFs held. Use compare_pair for just two assets. Covers ~4,700 US-listed stocks and ETFs only (no crypto, no foreign listings, no inverse/leveraged short funds, no intraday data); figures use weekly closes and refresh once per trading day. Unknown tickers return an error: resolve them with resolve_symbol first.
| Name | Type | Req | Description |
|---|---|---|---|
| detail | string | – | auto (default) includes the correlation matrix up to 12 positions; compact never includes it |
| positions | array | yes | The holdings. Example: [{symbol:'AAPL',weight:40},{symbol:'MSFT',weight:30},{symbol:'SCHD',weight:30}] |
| Name | Type | Req | Description |
|---|---|---|---|
| clusters | object | yes | – |
| correlation_matrix | – | – | – |
| drawdown | object | yes | – |
| etf_overlap_warnings | array | yes | – |
| flags | array | yes | – |
| meta | object | yes | – |
| notes | array | yes | – |
| portfolio | object | yes | – |
| positions | array | yes | – |
| redundant_pairs | array | yes | – |
| terms | string | – | – |
No examples provided.
compare_pair Compare two assets ~211
Correlation (weekly returns), annualized covariance, beta vs S&P 500, volatility, max drawdown, calendar-year returns, fund facts (fees, yield, AUM) or stock fundamentals (market cap, P/E), and ETF holdings overlap with top common positions, for a pair of US stocks or ETFs. Popular pairs come from PairBook's precomputed matrix; any other pair of covered symbols is computed on demand from the weekly return series. Example: a=QQQ, b=VOO. Symbol order does not matter. Covers ~4,700 US-listed stocks and ETFs only (no crypto, no foreign listings, no inverse/leveraged short funds, no intraday data); figures use weekly closes and refresh once per trading day. Unknown tickers return an error: resolve them with resolve_symbol first.
| Name | Type | Req | Description |
|---|---|---|---|
| a | string | yes | First ticker, e.g. AAPL or SPY |
| b | string | yes | Second ticker, e.g. MSFT or VOO |
| Name | Type | Req | Description |
|---|---|---|---|
| a | string | yes | – |
| as_of | string | yes | – |
| b | string | yes | – |
| beta_vs_spy_3y | object | – | – |
| calendar_year_returns_pct | object | – | – |
| computed_on_demand | boolean | – | – |
| correlation_weekly | object | yes | – |
| covariance_ann_pct2_3y | number|null | – | – |
| docs | string | – | – |
| fund | object | – | – |
| fundamentals | object | – | – |
| holdings_overlap | – | – | – |
| max_drawdown_3y_pct | object | – | – |
| note | string | – | – |
| page | string | – | – |
| terms | string | – | – |
| volatility_ann_pct_3y | object | – | – |
No examples provided.
find_diversifiers Find diversifiers ~154
Assets with the lowest or most negative 3-year correlation to the given US stock or ETF, each with its name and kind so you can screen them. Raw lowest-correlation list: it can contain leveraged/inverse ETNs, volatility products and illiquid micro-caps. Check name and kind before presenting anything as a portfolio diversifier. Covers ~4,700 US-listed stocks and ETFs only (no crypto, no foreign listings, no inverse/leveraged short funds, no intraday data); figures use weekly closes and refresh once per trading day. Unknown tickers return an error: resolve them with resolve_symbol first.
| Name | Type | Req | Description |
|---|---|---|---|
| symbol | string | yes | Ticker to diversify away from, e.g. QQQ |
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | yes | – |
| caution | string | – | – |
| diversifiers_3y | array | – | – |
| docs | string | – | – |
| name | string | – | – |
| page | string | – | – |
| symbol | string | yes | – |
| terms | string | – | – |
No examples provided.
resolve_symbol Resolve a ticker ~91
Find the ticker for a company or fund name (e.g. 'nvidia' -> NVDA) across PairBook's ~4,700 covered US stocks and ETFs. Call this before other tools whenever the exact ticker is uncertain or a lookup returned not-found.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum matches to return (default 8) |
| query | string | yes | Company or fund name, or partial ticker |
| Name | Type | Req | Description |
|---|---|---|---|
| matches | array | yes | – |
| note | string | – | – |
| total_matches | number | – | – |
No examples provided.
symbol_profile Asset profile ~138
One US stock or ETF: beta vs S&P 500, annualized volatility, 1/3/5-year returns, max drawdown, calendar-year returns, fund facts or stock fundamentals, and its most correlated assets. For diversification candidates use find_diversifiers. Covers ~4,700 US-listed stocks and ETFs only (no crypto, no foreign listings, no inverse/leveraged short funds, no intraday data); figures use weekly closes and refresh once per trading day. Unknown tickers return an error: resolve them with resolve_symbol first.
| Name | Type | Req | Description |
|---|---|---|---|
| symbol | string | yes | Ticker, e.g. NVDA or SCHD |
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | yes | – |
| beta_vs_spy_3y | number|null | – | – |
| calendar_year_returns_pct | – | – | – |
| diversifiers_3y | – | – | – |
| docs | string | – | – |
| fund | – | – | – |
| fundamentals | – | – | – |
| group | string|null | – | – |
| kind | string | – | – |
| max_drawdown_3y_pct | number|null | – | – |
| most_correlated_3y | array | – | – |
| name | string | – | – |
| page | string | – | – |
| return_pct | object | – | – |
| symbol | string | yes | – |
| terms | string | – | – |
| volatility_ann_pct_3y | number|null | – | – |
No examples provided.
weekly_returns Weekly return series ~141
Weekly return series for one US stock or ETF (W-FRI, most recent last, all series end on the same Friday so tails align across symbols), for custom correlation or risk math. Covers ~4,700 US-listed stocks and ETFs only (no crypto, no foreign listings, no inverse/leveraged short funds, no intraday data); figures use weekly closes and refresh once per trading day. Unknown tickers return an error: resolve them with resolve_symbol first.
| Name | Type | Req | Description |
|---|---|---|---|
| symbol | string | yes | Ticker, e.g. AAPL |
| weeks | integer | – | Only return the most recent N weeks (default: all, up to 156) |
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | string | yes | – |
| docs | string | – | – |
| freq | string | – | – |
| returns | array | yes | – |
| symbol | string | yes | – |
| terms | string | – | – |
| window_weeks | number | – | – |
No examples provided.
What is the io.github.pairbook-io/pairbook-mcp server?
io.github.pairbook-io/pairbook-mcp is listed in the public MCP registry as io.github.pairbook-io/pairbook-mcp. Portfolio risk analysis, correlation and ETF overlap for 4,700+ US stocks and ETFs. Free, no key. This page covers its npm package (pairbook-mcp).
Is the io.github.pairbook-io/pairbook-mcp server safe to use?
io.github.pairbook-io/pairbook-mcp scores 75 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.github.pairbook-io/pairbook-mcp server expose?
io.github.pairbook-io/pairbook-mcp exposes 6 tools: compare_pair, symbol_profile, find_diversifiers, weekly_returns, resolve_symbol, analyze_portfolio. Their descriptions and schemas cost roughly 957 tokens of context every time the server is loaded.
Is the io.github.pairbook-io/pairbook-mcp server still maintained?
io.github.pairbook-io/pairbook-mcp is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the io.github.pairbook-io/pairbook-mcp server under?
io.github.pairbook-io/pairbook-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.