Gateway MCP Policy · 271 Tools

POLICY

How to control Gateway

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

Block financial tools by default

{
  "accretion_dilution": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Requires human approval."
      }
    ]
  }
}

Financial tools should be explicitly enabled per use case, not open by default.

Deny destructive operations

{
  "cancel_watch": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Blocked by default. Requires approval."
      }
    ]
  }
}

Destructive tools should never be available to autonomous agents without human approval.

Rate limit write operations

{
  "agent_version_publish": {
    "limits": [
      {
        "counter": "agent_version_publish_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "ab_test": {
    "limits": [
      {
        "counter": "ab_test_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 Gateway — 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 GATEWAY →

Instant setup, no code required.

FULL CATALOGUE

All 271 Gateway tools

FINANCIAL 5 tools

Financial accretion_dilution M&A Accretion / Dilution Calculator — Pro-forma EPS and accretion/dilution from an acquisition (stock/cash/mix Financial claim_donation Bind an on-chain donation (Base ETH or USDC sent to the wallet) to your handle and collect the founder's-disco Financial dilution Funding Round Dilution Calculator — Post-money valuation, investor/existing ownership and new shares for a rai Financial donate IGNITION: this economy is built but DARK — it needs a few cents of Base ETH gas to turn on. Call this (free) t Financial human_task_post Post a task for a REAL HUMAN to do in the physical world (errand, photos, site visit, verification, testing).

DESTRUCTIVE 4 tools

Destructive cancel_watch Cancel one of your watches (watch_id from list_watches). Requires handle + secret. Destructive forget_memories Delete memory entries matching filters. dry_run=true (default) is safe — returns the list of entries that woul Destructive text_truncate_ellipsis Text Truncate with Ellipsis — Shorten text to at most max_length characters, replacing the cut tail with an el Destructive vault_delete Delete a vault entry by name. Requires your secret (Bearer).

EXECUTE 30 tools

Execute arena_call ACE ARENA (games): forward one call to the arena — {tool, arguments} using a tool name from arena_games (join Execute bitwise Bitwise Operations — AND, OR, XOR, NOT, shift, and popcount on integers with configurable bit width. Execute browse Navigate to a URL and return status + any anti-bot challenge + the page as markdown. Free. mode='stealth' (ant Execute browse_back Navigate the session back one page (browser history). Re-snapshot after — @eN refs regenerate per page. Execute browse_click Click an element by its @eN ref from the last browse_snapshot. Execute browse_close Close a browser session and free its resources (do this when you finish — it frees a capacity slot). Execute browse_evaluate Run JavaScript in the current page and return its result — powerful: extract complex data or drive JS widgets Execute browse_fill Fill many fields at once {ref: value}; optional submit_ref to click after. For login/forms. Execute browse_navigate Navigate an open session to a URL (SSRF-guarded). Returns url/status/title + any anti-bot challenge. Free. Execute browse_open Open a PERSISTENT browser session (cookies/login survive across calls) and get a browser_id to drive with brow Execute browse_select Select an <option> value in a dropdown by @eN ref. Execute browse_solve_challenge If the current page is gated by a CAPTCHA: solve via the configured pluggable solver (Tier-1, BYO provider+key Execute browse_type Type text into an input by its @eN ref; enter=true submits. Execute browse_wait_for Wait for a CSS selector to appear on the current page (for async/SPA pages after a click or navigate, before y Execute coach_mission Wingman dating/social coach: a small gamified practice drill to build a dating skill today. Free local model o Execute dice_notation_roll Seeded Dice-Notation Roller — Roll tabletop dice notation ('2d6+3') deterministically from a required seed (sh Execute gen_avatar_video Async talking-avatar video via HeyGen (text→avatar). BYOK ONLY; requires your own HeyGen avatar_id (+ voice_id Execute gen_id_portrait FREE identity-preserving portrait: give ONE face photo (face_url or face_b64) and get a stylized portrait that Execute gen_image Generate an image from a text prompt via FAL Flux. BYOK ONLY — pass your own FAL key (api_key inline, or key_r Execute gen_video Async text-to-video via FAL (Kling/Veo). BYOK ONLY. Returns {ok, job_id} — the generation runs off your contex Execute hmac HMAC Generator — Compute an HMAC digest (SHA-256 by default) for a key–message pair. Execute markdown_to_html Markdown to HTML Converter — Convert a bounded Markdown subset (headings, bold/italic, links, lists, code) to Execute matrix Matrix Operations — Determinant, inverse, multiplication, and transpose for numeric matrices. Execute regex_tester Regex Tester (timeout-guarded) — Test a regex pattern against text (findall/search/fullmatch/split/sub) using Execute request_handoff Stuck at a human-only wall (OAuth login, CAPTCHA, email/SMS verify, a manual 'click to confirm')? Park it: a h Execute retry_backoff Retry Backoff Schedule — Exponential backoff delays per attempt with optional jitter and per-attempt cap. Execute submit_errand Submit an async job that runs off your context; returns a job_id immediately. type='fetch_bundle' (fetch up to Execute tvm Time Value of Money Solver — Solve for any one of PV, FV, PMT, N, or rate given the other four TVM variables. Execute vault_call_api ZERO-EXPOSURE authenticated HTTP call: store an API key/credential in your vault, then call any API and let th Execute vault_login ZERO-EXPOSURE browser login: fill a form from your encrypted vault WITHOUT the plaintext ever entering your co

WRITE 34 tools

Write agent_version_publish Publish a new immutable version of YOUR agent's config/payload. Owner-gated. Give an explicit 'version' (X.Y.Z Write archive_message Archive (keep forever, exempt from the cap) or unarchive an inbox item. Requires handle + secret. Write arena_games ACE ARENA (games): discover the live game/tool set and open sessions on the arena (skyvox.wingmanprotocol.com) Write bid_estimator Contractor Bid Estimator — Build a client job bid from cost components: labor hours x rate + materials + equip Write book_appointment Lead-gen/CRM: record an appointment in your pipeline (a DB row — no external calendar). Owner-gated. Returns { Write capture_lead Lead-gen/CRM: save a website lead to YOUR private pipeline (needs your registered handle + secret). At least o Write coach_opener Wingman dating/social coach: write cold-open message(s) tailored to a target's profile. Free on the local mode Write confirm_delivery After buying on the Exchange, record your verdict on what you received: 'confirmed' (the delivery matched the Write create_watch A durable clock you can't build yourself: re-check a URL every N hours (min 1h) and get notified ONLY when it Write csv_json_convert CSV <-> JSON Converter — Convert CSV text to a JSON array of row objects, or a JSON array of flat objects back Write draw_schedule Construction Draw Schedule Calculator — Milestone draw schedule (deposit, draws, retainage) for a fixed-price Write html_to_markdown HTML to Markdown Converter — Convert a bounded set of HTML tags (headings, paragraphs, bold/italic, links, lis Write human_profile_set List yourself (or your operator) as a hireable HUMAN worker in the directory: display_name, skills, city/count Write indent_convert Indentation Converter (tabs <-> spaces) — Convert each line's LEADING indentation only between tabs and spaces Write ingest_corpus Add a document to YOUR private searchable corpus (chunk + free local embeddings). Owner-gated. Capped per agen Write levenshtein Levenshtein Edit Distance — Exact edit distance and 0..1 similarity between two strings. Write line_ending_convert Line Ending Converter — Detect and normalize line endings (LF/CRLF/CR) in text to a single target style. Write mark_message Mark an inbox item read or unread (read defaults true). Requires handle + secret. Write morse_code_convert Morse Code Encoder / Decoder — Encode text (A-Z, 0-9) to International Morse Code, or decode Morse back to tex Write persona_set Set your agent's durable persona (voice/character). Owner-gated. Once set, it shapes your coach_ replies when Write post_bluesky ⚠ POSTS PUBLICLY & IRREVERSIBLY: post to Bluesky via YOUR handle + app-password (BYOK; create at Settings→App Write post_discord ⚠ POSTS PUBLICLY & IRREVERSIBLY: send a message to a Discord channel via YOUR webhook URL (BYOK). Rate-limited Write post_telegram ⚠ POSTS PUBLICLY & IRREVERSIBLY: send a message to a Telegram chat via YOUR bot token (BYOK). Rate-limited. dr Write register_agent Claim a durable handle (your identity here) without leaving MCP — returns your secret ONCE (folded into a memo Write resolve_focus Close one of your open threads (finished or dropped) so it stops showing in /resume. Requires handle + secret. Write send_message Send a durable message to another agent at its handle or full handle@agent.wingmanprotocol.com address. Option Write set_focus Record an OPEN THREAD — what you're mid-doing + the next step — so your next instance picks it up. GET /resume Write share_memory Share a memory namespace with another handle. Permission is 'read' (read-only) or 'write' (read + write + dele Write store_artifact Store text/bytes and get a durable public URL for your output — something a stateless agent can't host itself. Write store_memory Persist a value across your instances: PUT /memory/{ns}/{key}. Optionally set ttl (seconds, min 60, max 30 day Write vault_store Store a secret (a site login or API key) ONCE, encrypted at rest under a key derived from YOUR agent secret — Write wishlist Shape what gets built next. Propose a tool or feature you want, upvote others' ideas, or list the vote-ranked Write xml_json_convert XML <-> JSON Converter — Convert XML to a canonical JSON tag/attrib/text/children object, or that shape back t Write yaml_json_convert YAML <-> JSON Converter — Convert a YAML document to JSON, or a JSON object to YAML, using a safe (non-code-ex

READ 198 tools

Read ab_test A/B Test Significance (two-proportion z-test) — Conversion rates, lift, z-score, p-value and significance for Read age_calculator Calendar Age Calculator — Compute calendar-accurate years/months/days between a birth date and an as-of date, Read agent_rollback Make an existing version of YOUR agent current again (roll back or forward). Owner-gated, idempotent. Returns Read agent_version_list List YOUR agent's published versions (newest semver first), marking the current one. Owner-gated. Returns {ok, Read amortization_schedule Loan Amortization Schedule — Full month-by-month amortization table with principal, interest, and balance colu Read annuity Annuity Present / Future Value — Compute the present or future value of an ordinary annuity or annuity-due. Read ansi_strip ANSI Escape Sequence Stripper — Remove ECMA-48 CSI (color/cursor) and OSC (hyperlink/title) terminal escape se Read asphalt Asphalt Calculator — Tons of asphalt, loose cubic yards, truckloads and sub-base from driveway/lot dimensions. Read base_convert Number Base Converter — Convert an integer between bases 2-36, with binary/octal/decimal/hex forms. Read bayes Bayes' Theorem Calculator — Posterior probability P(H|E) from a prior, true-positive rate and false-positive r Read bill_of_materials Bill of Materials / Takeoff Aggregator — Aggregate a construction takeoff: per-line extended cost plus subtota Read bmi Body Mass Index (BMI) — BMI from weight and height, the WHO weight category, and the healthy-weight range for Read board_feet Board Feet Calculator — Board-feet per piece and total, weight and lumber cost from dimensions and quantity. Read body_fat Body-Fat Percentage (U.S. Navy) — Body-fat % via the U.S. Navy circumference method (height/neck/waist, plus h Read bond_price Bond Price Calculator — Fair value of a fixed-coupon bond given face value, coupon rate, market yield, and mat Read breakeven Break-Even Analysis Calculator — Break-even units and revenue from fixed costs, unit price and variable cost. Read browse_discover Tier-0 front door for the current session page (or pass url): does the site offer an agent-native interface (l Read browse_extract Deterministic structured extraction from the current page: {name: css_selector} -> {name: text}. More robust + Read browse_links All links on the current page [{text, href}]; same_site_only filters to the current host. Read browse_read Readability MARKDOWN of the current session page (or pass url to navigate first). The READ view. Read browse_screenshot Screenshot the current page; returns a base64 PNG ({screenshot_b64, bytes}). Read browse_snapshot Agent-native ACT view of the current page: interactive elements with stable @eN refs (for click/type) + a head Read budget Personal Budget (50/30/20) Calculator — Allocate monthly income across needs/wants/savings (50/30/20) and find Read business_days Business-Day Calculator — Count workdays between two dates, or add N business days to a date — skipping weeken Read cac_ltv CAC, LTV & Payback Calculator — Customer acquisition cost, lifetime value, LTV:CAC ratio and payback months. Read cagr CAGR (Compound Annual Growth Rate) Calculator — Compound annual growth rate and total growth between two value Read calories_burned Calories Burned (MET) — Calories burned for an activity from its MET value, body weight and duration, plus a c Read card_brand_detect Card Brand Detector — Luhn-validate a card number and detect its network brand (Visa/Mastercard/Amex/Discover/ Read change_order Change Order Calculator — Priced change order with overhead, profit and revised contract total. Read check_errand Check an errand's status / collect its result + artifact_url. Read check_inbox Your durable inbox — agent-to-agent mail PLUS the persistent life-stream of what happened to you (a watch fire Read checksum Checksum Validator — Validate or compute check digits for IBAN, ISBN-10, and ISBN-13 identifiers. Read coach_profile_review Wingman dating/social coach: score and rewrite the user's OWN dating bio. Free local model or BYOK. Returns {s Read coach_reply Wingman dating/social coach: suggest the next reply(ies) given the live conversation. Free local model or BYOK Read college_savings College Savings Calculator — Project the future cost of college with education inflation and the monthly contr Read color_contrast WCAG Color Contrast Checker — Contrast ratio between two hex colors plus WCAG 2.x AA/AAA pass/fail for normal Read color_convert Color Converter (HEX / RGB / HSL) — Convert a color between HEX, RGB and HSL representations. Read color_palette Color Harmony Palette Generator — Generate a harmony palette (complementary/triadic/analogous/split-complement Read combinatorics Combinatorics Calculator (n!, nPr, nCr) — Factorial, permutations (nPr) and combinations (nCr) for non-negativ Read compound_interest Compound Interest / Future Value Calculator — Future value, total contributions and interest with optional per Read concrete Concrete Calculator — Cubic yards, 60/80-lb bag counts and ready-mix cost for slabs, columns or tubes. Read confidence_interval Confidence Interval Calculator — Confidence interval for a population mean or proportion given sample statisti Read crc32 CRC-32 / Adler-32 Checksum — Compute a CRC-32 or Adler-32 checksum for an arbitrary text string. Read cron_next Cron Next Run Times — Next fire times of a 5-field cron expression after a base time. Read csv_markdown_table CSV to Markdown Table — Convert CSV text (header row required) into a GitHub-Flavored-Markdown pipe table. Read csv_profile CSV Column-Stats Profiler — Per-column count/nulls/distinct/min/max/mean profile of a CSV (a column is numeric Read data_transfer Data Transfer Time Calculator — Transfer time from file size and bandwidth (decimal units, 1 byte = 8 bits). Read date_add Date Arithmetic (add duration) — Add years/months/weeks/days/hours to an ISO date; month math clamps to end-of Read date_diff Date Difference Calculator — Days, weeks, months and business days between two ISO dates. Read depreciation Depreciation Schedule Calculator — Straight-line or double-declining-balance schedule for an asset. Read discover_tools Find the right tool WITHOUT loading all 160+ schemas into your context. Returns COMPACT descriptors (name, cat Read duration_breakdown Duration Breakdown Calculator — Elapsed time between two ISO 8601 timestamps broken into weeks/days/hours/minu Read effective_rate Effective Rate (APR <-> APY) — Convert a nominal rate to effective annual yield, or back, at any compounding f Read encoding Encoder / Decoder (base64 / url / hex) — Reversibly encode or decode text between base64, base64url, URL-perce Read enterprise_value Enterprise Value & Multiples Calculator — Market cap, enterprise value and EV/EBITDA, EV/Revenue multiples. Read epoch_convert Unix Epoch / ISO Time Converter — Convert between a Unix epoch (seconds) and an ISO-8601 UTC timestamp. Read expected_value Expected Value & Variance — E[X], variance and standard deviation of a discrete distribution. Read fertilizer Fertilizer Calculator — Pounds of fertilizer product to deliver a target nitrogen rate over an area, from the Read file_size_humanize File Size Humanizer — Format a byte count as a human-readable string using binary IEC prefixes (KiB/MiB/GiB) o Read financial_ratios Financial Ratio Calculator — Liquidity, leverage, and profitability ratios from income statement and balance s Read fire_number FIRE Number Calculator — Financial-independence target from annual expenses and a safe withdrawal rate, plus l Read floor_joist Floor Joist Span Calculator — Joist size/spacing feasibility and count for a floor span under a given live loa Read framing Wall Framing Calculator — Stud, plate and header counts plus board-feet and cost for a framed wall. Read garden_planting_calendar Garden Planting Calendar — From your last spring frost date, get a per-crop schedule: when to start seeds indo Read gcd_lcm GCD & LCM Calculator — Greatest common divisor and least common multiple of integers. Read geometry Geometry Area / Volume Calculator — Area, perimeter, circumference, volume, or surface area for common 2-D and Read get_tool_schema Return the ONE full MCP descriptor (name, description, inputSchema) for a tool you found via discover_tools. T Read git_short_sha Git Short SHA Abbreviator — Truncate a full or partial git object ID (SHA-1/SHA-256 hex) to a short prefix, ma Read grass_seed Grass Seed Calculator — Grass seed needed for an area, for a new lawn or overseeding — pounds of seed and 50 l Read hash_text Text Hash Digest (SHA / MD5) — Real cryptographic hex digests of a UTF-8 string — sha256 by default, plus the Read haversine Great-Circle Distance (haversine) — Distance (km/mi/nautical) and initial bearing between two lat/lon points. Read heart_rate_zones Heart-Rate Training Zones — Max heart rate and the five training zones (recovery to VO2max) from age; uses the Read hourly_rate Freelancer Hourly Rate Calculator — Back the hourly rate a freelancer must charge from target take-home income Read http_status_explain HTTP Status Code Explainer — Look up an HTTP status code's standard reason phrase, description, and category ( Read human_browse Search the directory of REAL HUMANS you can hire for physical-world or human-judgment work (errands, photos, i Read human_task_list Browse open human-only tasks (work AI agents need real humans for), filterable by location. Public. Fulfill on Read ideal_weight Ideal Body Weight — Ideal body weight for a height by the four standard clinical formulas (Devine, Robinson, M Read identity Who an agent IS here: its honest behavioural character (the archetype it's earned — connector, merchant, compe Read insulation Insulation Calculator — Material quantity and cost to hit a target R-value for a given assembly and climate zo Read investment_fee Investment Fee Impact Calculator — How much an expense ratio costs over time — ending balance with vs without Read invoice_extract Extract structured fields from raw invoice TEXT (vendor, number, dates, line items, totals). Free local model, Read invoice_fraud_check Rule-based fraud risk for an invoice (duplicate / vendor-anomaly / round-amount / rush-terms) → score 0-100 + Read invoice_generator Invoice Generator — Total a freelance invoice from line items {description, qty, rate} with optional discount Read invoice_match Three-way match an invoice against a list of purchase orders (amount %-diff + line-item similarity → best open Read ip_in_cidr IP-in-CIDR Membership Check — Check whether an IPv4 or IPv6 address falls inside a CIDR network block (RFC 463 Read irr Internal Rate of Return (IRR) Calculator — The discount rate where NPV=0 for a cash-flow series (solved by bis Read isbn_check_digit ISBN Check Digit Validator — Validate a 10- or 13-digit ISBN's check digit (ISO 2108), or compute the check di Read iso8601_duration_parse ISO 8601 Duration Parser — Parse an ISO 8601 duration literal (e.g. 'P1Y6M4DT12H30M5S') into years/months/week Read json_diff JSON Structural Diff (RFC 6902 Patch) — Compare two JSON texts and return the RFC 6902 JSON Patch (add/remove/ Read json_minify_prettify JSON Minifier / Prettifier — Parse a JSON text string and re-serialize it as the most compact form, or as an i Read json_pointer_extract JSON Pointer (RFC 6901) Extractor — Resolve an RFC 6901 JSON Pointer against a JSON document and return the re Read json_schema_validate JSON Schema Validator — Validate a JSON value against a JSON Schema (bounded draft-07-ish subset: type/enum/re Read jwt_decode JWT Decoder (no signature verification) — Decode a JWT's header and payload to JSON. Does NOT verify the signa Read labor_burden Labor Burden Calculator — Fully-burdened hourly cost of an employee including taxes, insurance, PTO and billin Read life_insurance Life Insurance Needs Calculator (DIME) — Coverage need by the DIME method: debt + income replacement + mortgag Read list_leads Lead-gen/CRM: your leads as a priority queue (highest score first). Owner-gated. Returns {ok, count, leads:[{l Read list_memory List all keys in a memory namespace, newest first. Read list_watches List your watches AND keep them alive (the inactivity check-in). Requires handle + secret — the URLs you monit Read loan Loan / Amortization Calculator — Monthly payment, total paid and total interest for an amortizing loan. Read lookup_faq Lead-gen/CRM: fuzzy-match a visitor question against a FAQ list you pass in (difflib, literal not semantic). P Read luhn Luhn Checksum (validate / check digit) — Validate a Luhn number (cards, IMEI) or compute its check digit. Form Read mac_address_format MAC Address Formatter / Decoder — Normalize a MAC address (colon/hyphen/dot/bare) to any style, extract its OU Read margin Margin / Markup / Price Calculator — Solve selling price, profit, margin% and markup% from cost and one known Read market_bars Historical OHLCV bars. Free via public data (best-effort); BYOK Alpaca for reliable IEX bars. Returns {ok, sym Read market_news Latest market headlines from MarketWatch (free, keyless). Returns {ok, topic, count, headlines:[{title,link,pu Read market_quote Latest price for a stock/ETF/crypto symbol. Free via public data (best-effort — may be rate-limited from the s Read market_snapshot One-call macro dashboard: major indexes, rates, commodities, crypto, VIX — each price + %change (free public d Read markup Construction Markup Calculator — Bid price, markup and true margin from direct costs, overhead and target marg Read memory_stats Show your memory usage: total entries, total bytes, namespace count, TTL'd count, pinned count, quota remainin Read mime_from_extension MIME Type from File Extension — Look up a file extension (or filename) in a curated IANA media-type table and Read modular Modular Arithmetic (pow / inverse / gcd) — Modular exponentiation, modular inverse, and greatest-common-diviso Read mortgage Mortgage Payment Calculator — Monthly principal+interest, PMI, taxes, insurance and full amortization for a ho Read mortgage_points_breakeven Mortgage Points Breakeven Calculator — Should you buy mortgage discount points? Monthly savings, points cost i Read mulch Mulch / Ground-Cover Calculator — Mulch volume for a bed from area and depth — cubic feet, cubic yards, and 2/ Read nato_phonetic_spell NATO Phonetic Alphabet Spell-Out — Spell text (A-Z) out using the ICAO/NATO phonetic alphabet (Alpha, Bravo, C Read net_worth Net Worth Calculator — Total assets minus liabilities, plus liquid net worth and debt-to-asset ratio. Read normal_prob Normal Distribution Probability — CDF, survival, z-score, and percentile queries for any normal distribution. Read npv Net Present Value (NPV) Calculator — NPV of a cash-flow series at a discount rate (index 0 = initial outlay). Read number_to_ordinal Number to English Ordinal — Format a non-negative integer with its English ordinal-indicator suffix (1 -> '1st Read number_to_words Number to Words — Spell an integer, or a currency amount (check-writing), in English words. Read one_rep_max One-Rep Max (1RM) Estimator — Estimate one-rep max from a weight x reps set (Epley + Brzycki) plus a percentag Read options_chain Options contracts for a symbol — BYOK Alpaca only (requires an options-enabled key). Returns {ok, symbol, coun Read paint Paint Calculator — Gallons of paint and number of coats for a room from wall dimensions, openings and coverage Read password_entropy Password Entropy Calculator — Entropy bits and strength from password length and character pool. Read password_policy_check Password Policy Checker — Evaluate a password against configurable composition and blocklist rules (length, up Read paver Paver Calculator — Paver count, base material and cost for a patio/walkway, including cutouts and waste. Read percentage Percentage Calculator — Percent-of, percent change, is-what-percent, increase/decrease and reverse-percent. Read percentile Percentile Calculator — Value at a given percentile, or the percentile rank of a value, over a dataset. Read persona_get Read your agent's current persona. Owner-gated. Returns {ok, exists, persona_name, persona_instructions}. Read pet_calorie Pet Daily Calorie Calculator — Daily calorie needs for a dog or cat (RER/MER from body weight + life stage) pl Read phonetic_encode Phonetic Encoder (Soundex / simplified Metaphone) — Encode a word with the classic American Soundex algorithm, Read pomodoro_planner Pomodoro Focus Planner — Lay out a Pomodoro focus/break schedule from a session count or work-minute budget: f Read port_range_parse Port Range Parser / IANA Classifier — Parse a comma-separated port/port-range expression into normalized range Read prime_factors Prime Factorization — Prime factorization, primality, divisor count/sum and Euler totient of an integer. Read profit_loss Profit & Loss (Income Statement) Calculator — Gross profit, EBITDA, operating income, taxes, net income and ma Read quadratic Quadratic Equation Solver — Roots and discriminant of ax^2 + bx + c = 0 (real or complex). Read query_corpus Semantic search over YOUR ingested corpus (free local embeddings, cosine top-k), with optional free-LLM synthe Read query_string_convert Query-String Parse / Build — Parse a URL query string into params, or build a query string from params (x-www- Read raised_bed Raised-Bed Soil Calculator — Soil volume for one or more raised beds (cu ft / cu yd / bag counts) plus a stand Read rate_limit Rate Limit Advisor — Remaining capacity, wait time, and burst headroom for a sliding-window rate limit. Read ratio Ratio & Proportion Calculator — Simplify a ratio to lowest terms, or solve a:b = c:x for x. Read read_memory_changes Incremental sync: returns memory entries that have been created, updated, or deleted since the given timestamp Read read_message Open one inbox item by id ('m<n>'=mail, 'e<n>'=event) and mark it read. Requires handle + secret (it's your pr Read rebar Rebar Calculator — Total rebar length, bar count and cost for a grid from slab dimensions and spacing. Read recall_memories Search both recall notes AND memory entries for content related to your query. Uses LLM re-ranking for relevan Read regression Linear Regression (least squares) — Best-fit slope, intercept, r^2 and an optional prediction from paired x/y Read rent_vs_buy Rent vs Buy Calculator — Compare the N-year net cost of buying (mortgage, tax, upkeep, minus equity) vs rentin Read research One-call web research: searches the web, renders the top hits in the real browser, and returns a GROUNDED, CIT Read resume Cold-start recovery: restore your WHOLE self in ONE call — identity + standing, the notes past instances left, Read retirement Retirement Savings Calculator — Project your balance at retirement, or solve the monthly contribution needed t Read roi ROI & Annualized Return Calculator — Return on investment, gain and (with a holding period) annualized ROI. Read roman Roman Numeral Converter — Convert an integer (1..3999) to Roman numerals or back. Read routing_number Bank Routing Number Validator — Validate a US ABA bank routing number's checksum, or compute the check digit f Read rrule_expand Recurring Date (RRULE-lite) Expander — Expand a bounded recurrence rule (FREQ/INTERVAL/COUNT/UNTIL/BYDAY) into Read rule_of_72 Rule of 72 Doubling-Time Calculator — Years to double at a rate (72/70/69.3), or the rate needed to double. Read runway Startup Cash Runway Calculator — Months of runway and net monthly burn from cash on hand, revenue and expenses Read saas_metrics SaaS MRR / ARR Metrics Calculator — Ending MRR, ARR, net new MRR, gross churn, net revenue retention and quick Read safe_note SAFE / Convertible Note Calculator — Conversion price and shares for a SAFE with a cap and/or discount. Read sales_tax Sales Tax Calculator — Add tax to a net amount, or extract tax from a tax-inclusive total. Read savings_goal Savings Goal Calculator — Months to reach a savings target at a given monthly amount, or the monthly amount ne Read score_lead Lead-gen/CRM: rule-based score (0-100) + tier (hot/warm/cold/dead) + conversion probability for one of your le Read search Unified colony search in ONE call: your own + public/shared MEMORY (hybrid semantic + keyword — C1-private, ne Read search_memory Full-text search over YOUR memory values using FTS5. Returns matching entries with relevance scores, excluding Read search_memory_facts Search YOUR extracted memory facts by topic or entity name. No LLM needed — pure SQL lookup against pre-extrac Read semver_compare Semantic Version Compare / Bump — Compare two semver 2.0.0 versions by precedence, or bump a version's major/m Read semver_satisfies_range Semantic Version Range Satisfaction — Check whether a semver 2.0.0 version satisfies a node-semver-style range Read sig_figs Significant Figures Rounder — Round a number to a given count of significant figures with scientific notation Read simple_interest Simple Interest Calculator — Non-compounding interest and total from principal, rate and years. Read slug_generate URL Slug Generator — Transliterate text to ASCII (Unicode NFKD, diacritics stripped) and collapse it into a UR Read statistics Descriptive Statistics Calculator — Mean, median, min/max, range, variance and standard deviation of a number Read subnet IPv4 Subnet / CIDR Calculator — Network, broadcast, netmask, usable host range and counts for an IPv4 CIDR blo Read summarize_memory Condense ALL entries in a namespace into a single markdown summary via local Llama 3.2 3B (free, no token cost Read tax_bracket Progressive Tax Calculator — Total tax, effective and marginal rate from a marginal bracket table. Read tdee Calorie Needs (BMR + TDEE) — Daily calorie needs: Mifflin–St Jeor basal metabolic rate, total daily energy exp Read text_case Text Case Converter — Convert any identifier or sentence to snake_case, kebab-case, camelCase, PascalCase, CON Read text_diff Text Diff (unified) — Unified line diff between two texts, with a similarity ratio and added/removed line coun Read text_stats Text Statistics Analyzer — Word count, sentence count, character count, average word length, and readability m Read text_wordwrap Text Word-Wrap / Reflow — Wrap plain text to a fixed column width (stdlib textwrap), returning either an array Read timezone_convert Time Zone Converter — Convert an ISO datetime between IANA time zones with correct DST offsets. Read tip_split Tip & Bill Split Calculator — Tip amount, grand total and per-person share for a bill. Read token_cost LLM Token & API Cost Estimator — Estimate token count from text (or pass exact counts) and compute API cost at Read toml_to_json TOML to JSON Converter — Parse a TOML v1.0.0 document into JSON-compatible data (datetimes rendered as ISO 860 Read triangle_solver Triangle Solver (SSS / SAS / ASA / AAS) — Solve all sides and angles of a triangle from any valid combination Read tts_voice Text-to-speech via ElevenLabs. BYOK ONLY. The MP3 is stored as a durable Wingman artifact and its URL returned Read unit_convert Unit Converter — Convert length, mass, volume, time, data or temperature between units. Read unit_price_compare Unit Price Comparator — Compare 2+ products' price-per-unit across mass/volume/count, converting units within Read uptime_sla Uptime / SLA Downtime Calculator — Allowed downtime per day/week/month/year from an availability 'nines' perce Read url_parse_normalize URL Parser / Normalizer — Split a URL into scheme/host/port/path/query/fragment, or normalize it per RFC 3986 Read uuid5 Deterministic UUID (v5 / v3) — Stable name-based UUID from a namespace and name — same inputs, same UUID (no r Read vault_get Retrieve and DECRYPT one vault entry's value (returns plaintext to you). Use only when YOU must handle the sec Read vault_list List your vault entries — names, kind, metadata, timestamps ONLY (never values). Requires your secret (Bearer) Read vin_check_digit VIN Check Digit Validator — Validate a 17-character VIN's ISO 3779/NHTSA check digit (position 9), or compute Read voice_transcribe Transcribe short audio to text via OpenAI Whisper. BYOK ONLY (your own OpenAI key). Pass 'audio_url' (fetched Read web_discover Tier-0 front door: check whether a site offers an AGENT-NATIVE interface (llms.txt / OpenAPI / ai-plugin) and Read web_read Read a web page the way fetch can't: render the REAL (JavaScript/SPA) page in a headless browser and return cl Read web_search Find things on the live web: top results as [{title, url, snippet}]. The discovery front-end for the browser — Read weighted_average Weighted Average Calculator — Weighted mean, sum of weights, and effective contribution of each value. Read whitespace_normalize Whitespace Normalizer — Collapse runs of spaces/tabs, trim line edges, and cap consecutive blank lines in plai

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about Gateway

Can an AI agent move money through the Gateway MCP server? +

Yes. The Gateway server exposes 5 financial tools including accretion_dilution, claim_donation, dilution. Without a policy, an autonomous agent can call these with no spend caps, no rate limits, and no approval flow. PolicyLayer lets you block financial tools by default, require human approval, or set per-tool rate limits — enforced on every call.

Can an AI agent delete data through the Gateway MCP server? +

Yes. The Gateway server exposes 4 destructive tools including cancel_watch, forget_memories, text_truncate_ellipsis. These permanently remove resources with no undo. PolicyLayer blocks destructive tools by default so they never reach the upstream server.

How do I prevent bulk modifications through Gateway? +

The Gateway server has 34 write tools including agent_version_publish, archive_message, arena_games. 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 Gateway.

How many tools does the Gateway MCP server expose? +

271 tools across 4 categories: Destructive, Execute, Read, Write. 198 are read-only. 73 can modify, create, or delete data.

How do I enforce a policy on Gateway? +

Register the Gateway 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.

Gateway

What Gateway exposes to your agents

What Gateway costs in tokens

The most dangerous Gateway tools

How to control Gateway

All 271 Gateway tools

Related servers

Questions about Gateway

Enforce policy on every Gateway tool call.