// SCAN REPORT

Fathom Fyi

32 tools. 7 can modify or destroy data without limits.

7 write tools that can modify data. Rate limits recommended.

Last updated: 12 Jun 2026

7 can modify or destroy data

25 read-only

32 tools total

Community server · catalogue entry checked 12/06/2026

How to control Fathom Fyi ↓

TOOL MAP

What Fathom Fyi exposes to your agents

Read (25) Write / Execute (7) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous Fathom Fyi tools

Write · Medium set_webhook This is a Write operation because it creates and stores a new webhook configuration in the Fathom system. Write · Medium manage_webhooks Removing webhooks is a reversible write operation—configurations can be recreated. Write · Medium rotate_api_key This tool creates a new API key (Write action) and deactivates the old one (reversible modification of access credentials). Write · Medium set_alert This tool creates or modifies alert configurations in a financial system, which is a reversible write operation.

7 of Fathom Fyi's 32 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Fathom Fyi

PolicyLayer is an MCP gateway — it sits between your AI agents and Fathom Fyi, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "manage_webhooks": {
    "limits": [
      {
        "counter": "manage_webhooks_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "evaluate_strategy": {
    "limits": [
      {
        "counter": "evaluate_strategy_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Fathom Fyi — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON FATHOM FYI →

Instant setup, no code required.

FULL CATALOGUE

All 32 Fathom Fyi tools

WRITE 7 tools

Write manage_webhooks List all registered webhooks or remove one by ID. Use action Write rotate_api_key Rotate your Fathom API key. Generates a new key, deactivates the old one, and returns the new key. The user mu Write set_alert Set custom alerts that trigger when market conditions meet your thresholds. Example: [{field: Write set_custom_strategy Create a custom trading strategy with your own conditions. Then use evaluate_strategy to test it against curre Write set_portfolio_context Save your portfolio holdings so Fathom can give personalized guidance. Pass an array of holdings with asset na Write set_signal_preferences Customize which signals feed into your reality check. Turn individual signal sources on or off. Regime and sen Write set_webhook Register a webhook that fires when market conditions meet your criteria. Fathom evaluates conditions every 60

READ 25 tools

Read evaluate_strategy Evaluate a trading strategy against current market conditions. Built-in strategies: conservative_dca, momentum Read get_account_status Check your Fathom account: current tier, requests used this hour, available and locked tools, cache freshness, Read get_alerts Check which of your configured alerts are currently triggered. Evaluates all alert conditions against live mar Read get_alternative_signals Unconventional market signals that 99% of agents ignore. Weather in financial centers (sunshine effect), polit Read get_asset_context Get deep context on a specific crypto asset: cycle position, price trend, volume health, holder behavior, risk Read get_asset_momentum Short-term momentum signal for any asset. Returns direction, strength, confidence_score (-100 to +100), RSI, A Read get_chain_context Get DeFi context for a specific blockchain: TVL, dominance, trend, top protocols, and whether the chain is gai Read get_correlation_matrix BTC correlation with traditional finance: 30-day Pearson correlation with S&P 500 and Gold, plus current TradF Read get_crowd_intelligence [BETA] See what other Fathom-connected agents are doing. Returns aggregate posture distribution, consensus str Read get_defi_health Assess DeFi ecosystem health: total TVL, TVL trends, top chains and protocols, health score, revenue trends, a Read get_derivatives_context Derivatives intelligence: perpetual funding rates (BTC/ETH/SOL), options data (put/call ratio, open interest, Read get_event_catalyst_timeline Upcoming market-moving events: FOMC, CPI, jobs reports, options expiry, quad witching, political events, BTC h Read get_historical_context Look up what market conditions were on a specific date. Returns regime, fear/greed, risk score, BTC price, and Read get_macro_context Get macro economic context for crypto: Federal Funds Rate, DXY (dollar strength), yield curve, recession proba Read get_market_regime Classify the current crypto market regime (risk-on, risk-off, transitional, euphoric, capitulation) with confi Read get_narrative_pulse Identify accelerating, decelerating, and emerging crypto narratives. Shows sector rotation, momentum scores, a Read get_onchain_pulse Get Bitcoin on-chain health: mempool congestion, fees, miner distribution, network security, mining economics, Read get_portfolio_analysis Get personalized portfolio analysis against current market conditions. Shows position values, allocation perce Read get_question_context Enrich any binary yes/no question with relevant Fathom signals. Auto-detects if the question is macro, politic Read get_reality_check The master tool. Synthesizes ALL data sources into a unified financial reality briefing: executive summary, ri Read get_sentiment_state Get the current crypto sentiment state including Fear & Greed Index, 7-day trend, contrarian signals, and whet Read get_signal_history [BETA] View Fathom\ Read get_stablecoin_flows Track stablecoin supply changes across USDT, USDC, and all major stablecoins. Shows total supply, 24h/7d/30d m Read get_temporal_context Get Bitcoin halving cycle positioning: days since last halving, estimated cycle phase, historical analogs from Read get_watchlist_report Analyze multiple assets at once. Returns cycle position, risk level, and volume health for each. Detects state

FAQ

Questions about Fathom Fyi

How do I prevent bulk modifications through Fathom Fyi? +

The Fathom Fyi server has 7 write tools including manage_webhooks, rotate_api_key, set_alert. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Fathom Fyi.

How many tools does the Fathom Fyi MCP server expose? +

32 tools across 2 categories: Read, Write. 25 are read-only. 7 can modify, create, or delete data.

How do I enforce a policy on Fathom Fyi? +

Register the Fathom Fyi MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Fathom Fyi tool call.

Deterministic rules across all 32 Fathom Fyi tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON FATHOM FYI →

Instant setup, no code required.

32 Fathom Fyi tools catalogued and risk-classified — across an index of 46,500+ MCP servers.

// WHERE THIS COMES FROM

These policies come from Fathom Fyi's registry record.

The record behind this page: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →