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Builders in Fintech

by buildersinfintech.ai · remote · no sign-in to list tools · v1.1.0 · published by ai.buildersinfintech

Fintech companies, products, investors, funding rounds, news, podcast. Free, keyless, CC BY 4.0.

Final · 1Changes · 2
CompareRegistry entry

23 tools: 1 do something that can't be undone, 2 change things and 20 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http fintech-data https://buildersinfintech.ai/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnmost_active_investors

    The server marks "most_active_investors" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

23 tools

Can't be undone 1Claude Code: ask
  • most_active_investorsInvestors ranked by the number of approved rounds they appear in.Can send data out1 finding

    Why it is in this group

    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • outboundThe input takes a destination (input.to): what the tool writes goes there.

    Findings

    • Warn

      The server marks "most_active_investors" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Investors ranked by the number of approved rounds they appear in. Category defaults to equity. With a country, only rounds of companies headquartered in that country are counted; the country may be a slug ('italy') or a two-letter ISO code ('IT'), case-insensitive.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
Changes things 2Claude Code: ask
  • aboutWhat this database covers, how to cite it, and where the bulk downloads live.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    What this database covers, how to cite it, and where the bulk downloads live.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • largest_roundsLargest disclosed equity rounds, ranked per currency (amounts are never converted between currencies).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Largest disclosed equity rounds, ranked per currency (amounts are never converted between currencies).

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
Only reads 20Claude Code: allow
  • find_providersFind companies by product category, licence (licensed_in matches the home country or any passported country), licence type, authority, and agent access (has_sandbox, has_mcp, has_a…No findings

    Why it is in this group

    • The name "find_providers" says "find": a word for reading.
    Description, as the server wrote it
    Find companies by product category, licence (licensed_in matches the home country or any passported country), licence type, authority, and agent access (has_sandbox, has_mcp, has_api). Returns each company with its approved products (with agent_access), LEI, licence summaries and self-reported certifications. Every licence carries source_url and last_checked_at so you can verify it on the regulator's register. From public registers as of the last-checked date. Always confirm on the regulator's register before relying on it. Use list_provider_filters for valid slugs. Ordered by company name, then slug. cursor is the next_cursor from a previous page. Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • funding_summaryCounts for a slice of the funding database: rounds, countries, totals per announced currency, undisclosed rounds and rounds per category.Reads private dataNo findings

    Why it is in this group

    • The description's first verb is "count": a word for reading.

    What it can reach

    • private-dataThe description's first sentence says "count" and "database": it reads databases.
    Description, as the server wrote it
    Counts for a slice of the funding database: rounds, countries, totals per announced currency, undisclosed rounds and rounds per category. Note: rounds, per_currency and undisclosed count equity rounds only, while by_category covers every category (equity, debt, fund, grant, ipo), so the category split can sum higher than the round count.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • get_contentOne published item by type and slug, with its body text (truncated), topics, countries, organizations and people.No findings

    Why it is in this group

    • The name "get_content" says "get": a word for reading.
    Description, as the server wrote it
    One published item by type and slug, with its body text (truncated), topics, countries, organizations and people. News items also include a corrections array (date + note), newest first.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • get_daily_digestOne edition of the Builders in Fintech daily digest (weekdays): the equity rounds that became public in its window (largest first within USD, EUR, GBP, then other currencies; never…No findings

    Why it is in this group

    • The name "get_daily_digest" says "get": a word for reading.
    Description, as the server wrote it
    One edition of the Builders in Fintech daily digest (weekdays): the equity rounds that became public in its window (largest first within USD, EUR, GBP, then other currencies; never converted), news published in the window, one upcoming event and any podcast episode. Arguments: date (optional, 'YYYY-MM-DD'); omit for the latest published edition. Only published editions are returned. Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • get_funding_indexThe weekly Builders Fintech Funding Index of approved equity rounds (ISO weeks).No findings

    Why it is in this group

    • The name "get_funding_index" says "get": a word for reading.
    Description, as the server wrote it
    The weekly Builders Fintech Funding Index of approved equity rounds (ISO weeks). Arguments: week (optional, 'YYYY-Www', e.g. '2026-W39') returns that week; otherwise the latest weeks, newest first. weeks (optional, 1–104, default 1) sets how many. Count Index = rounds this week / average of the prior 12 weeks × 100. USD median index uses disclosed USD rounds only (needs 5). Amounts are never converted. Published values are frozen; revised_* shows later corrections. coverage_affected is true when a coverage change falls in the week or its 12-week baseline; coverage_note then explains how the index overstates activity. Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • get_investor_scorecardFollow-on scorecard for one investor by slug: of the portfolio companies it first backed at least the window ago, the share that raised a later approved round (equity or IPO) withi…No findings

    Why it is in this group

    • The name "get_investor_scorecard" says "get": a word for reading.
    Description, as the server wrote it
    Follow-on scorecard for one investor by slug: of the portfolio companies it first backed at least the window ago, the share that raised a later approved round (equity or IPO) within the window, at least gap_days after entry. Only returned when the investor has at least min_eligible eligible companies. Arguments: slug (required). Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • get_organizationFull public profile for one organization by slug: description, country, funding rounds (raised or led), people, any disclosure, editor_disclosure (current when the editor holds equ…Reads text others writeNo findings

    Why it is in this group

    • The name "get_organization" says "get": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "issue": it reads issues, which other people can write.
    Description, as the server wrote it
    Full public profile for one organization by slug: description, country, funding rounds (raised or led), people, any disclosure, editor_disclosure (current when the editor holds equity, past when it previously did, otherwise none), our published coverage of it (articles, newsletter issues, podcast episodes), and its products (company-provided, not part of the CC BY dataset), each with an agent_access object when API, sandbox, llms.txt, OpenAPI or MCP details are set. Also lei, licences[] (approved register entries, each with source_url and last_checked_at) and certifications[] (self-reported by the company, with evidence_url).

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • get_personFull public profile for one person by slug: bio, roles and coverage.No findings

    Why it is in this group

    • The name "get_person" says "get": a word for reading.
    Description, as the server wrote it
    Full public profile for one person by slug: bio, roles and coverage.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • get_productFull public listing for one product by slug: description, category, markets, customer type, API, pricing model, links, the company and an agent_access object (api_available, docs_u…Reads private dataReads text others writeNo findings

    Why it is in this group

    • The name "get_product" says "get": a word for reading.

    What it can reach

    • private-dataThe description's first sentence says "doc": it reads documents.
    • untrusted-inputThe description's first sentence says "url": it reads web pages, which anyone can write.
    Description, as the server wrote it
    Full public listing for one product by slug: description, category, markets, customer type, API, pricing model, links, the company and an agent_access object (api_available, docs_url, openapi_url, sandbox_url, llms_txt_url, auth_method, mcp_url) when any is set, plus the company's lei, licences[] (with source_url and last_checked_at) and certifications[] (self-reported). Company-provided, not part of the CC BY dataset. Each result carries provided_by, last_confirmed_at and sponsored; sponsorship never changes ordering.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • list_countriesCountries that have public coverage, with company and content counts.No findings

    Why it is in this group

    • The name "list_countries" says "list": a word for reading.
    Description, as the server wrote it
    Countries that have public coverage, with company and content counts.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • list_eventsApproved fintech events, upcoming by default, with optional country, format, topic and month filters.No findings

    Why it is in this group

    • The name "list_events" says "list": a word for reading.
    Description, as the server wrote it
    Approved fintech events, upcoming by default, with optional country, format, topic and month filters.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • list_funding_roundsApproved funding rounds, newest first, with optional filters and keyset pagination.No findings

    Why it is in this group

    • The name "list_funding_rounds" says "list": a word for reading.
    Description, as the server wrote it
    Approved funding rounds, newest first, with optional filters and keyset pagination. Pass the returned next_cursor fields (after_date, after_id) to get the next page.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • list_provider_filtersValid values for find_providers: product category slugs, licence type slugs, authority slugs, and the ISO codes of countries that have at least one public licence (home or passport…No findings

    Why it is in this group

    • The name "list_provider_filters" says "list": a word for reading.
    Description, as the server wrote it
    Valid values for find_providers: product category slugs, licence type slugs, authority slugs, and the ISO codes of countries that have at least one public licence (home or passported).

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • list_raisingFintech companies that pitched Builders in Fintech and opted in to a public listing while they raise: company name, website, one-liner, stage, country, target raise (never converte…Reads text others writeNo findings

    Why it is in this group

    • The name "list_raising" says "list": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "website": it reads web pages, which anyone can write.
    Description, as the server wrote it
    Fintech companies that pitched Builders in Fintech and opted in to a public listing while they raise: company name, website, one-liner, stage, country, target raise (never converted) and a featured flag (featured = the 3 most recently approved live listings). Listings are provided by the companies, not verified, and not an offer. Argument: featured_only (optional boolean: only the 3 featured listings). Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • list_topicsEvery public topic with its slug and URL, for use as a filter in the other tools.Reads text others writeNo findings

    Why it is in this group

    • The name "list_topics" says "list": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "url": it reads web pages, which anyone can write.
    Description, as the server wrote it
    Every public topic with its slug and URL, for use as a filter in the other tools.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • search_contentFull-text search across published news, newsletter issues, podcast episodes, public entity pages, funding rounds and products.Reads text others writeNo findings

    Why it is in this group

    • The name "search_content" says "search": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "issue": it reads issues, which other people can write.
    Description, as the server wrote it
    Full-text search across published news, newsletter issues, podcast episodes, public entity pages, funding rounds and products. Result kinds: news, newsletter, podcast, company, investor, person, topic, country, funding_round, product; funding_round results also carry company, round_type, category, amount, currency, display_amount and announced_at. Arguments: q (or query): text to search for, at least 2 characters — required, this tool has no plain-list mode. Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • search_organizationsSearch fintech companies and investors by name, kind or country.No findings

    Why it is in this group

    • The name "search_organizations" says "search": a word for reading.
    Description, as the server wrote it
    Search fintech companies and investors by name, kind or country. Returns public profiles with canonical URLs. Arguments: q (or query): text to search for, matched against the name. With no q the tool returns a plain alphabetical list (first 25 by default). Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • search_peopleSearch founders, operators and investors covered by the publication.No findings

    Why it is in this group

    • The name "search_people" says "search": a word for reading.
    Description, as the server wrote it
    Search founders, operators and investors covered by the publication. Arguments: q (or query): text to search for, matched against the full name. With no q the tool returns a plain alphabetical list (first 25 by default). Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • search_podcast_knowledgeSearch attributed facts and question-and-answer pairs from Builders in Fintech podcast episodes (as stated by the guest, not independently verified).No findings

    Why it is in this group

    • The name "search_podcast_knowledge" says "search": a word for reading.
    Description, as the server wrote it
    Search attributed facts and question-and-answer pairs from Builders in Fintech podcast episodes (as stated by the guest, not independently verified). Arguments: q (or query) matched against fact text, and against questions and answers; organization (slug) = facts linked to that company or investor; person (slug) = facts said by that person; fact_type (figure, fact, plan, view); episode (podcast episode slug); limit; cursor (next_cursor from the previous page). With no q the tool lists the newest facts. The qa array is returned only when q is given and honours q and episode only. Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false
  • search_productsSearch fintech products by text, category, market, API availability, agent access (has_mcp, has_sandbox, has_api) or customer type.No findings

    Why it is in this group

    • The name "search_products" says "search": a word for reading.
    Description, as the server wrote it
    Search fintech products by text, category, market, API availability, agent access (has_mcp, has_sandbox, has_api) or customer type. Each product carries an agent_access object (api_available, docs_url, openapi_url, sandbox_url, llms_txt_url, auth_method, mcp_url) when any of these is set. Company-provided, not part of the CC BY dataset. Each result carries provided_by, last_confirmed_at and sponsored; sponsorship never changes ordering. Arguments: q (or query) matched against name and short description; with no q the tool lists products alphabetically. cursor is the opaque next_cursor from a previous page. Unknown arguments are rejected.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

10 paths in this server alone from private data, through text someone else wrote, to a way out. Denying 1 outbound tool breaks every one.

Reads private data2
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write5
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out1
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
deny to break every path
{
  "permissions": {
    "deny": [
      "mcp__fintech-data__most_active_investors"
    ]
  }
}

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Looked at Oct 22, 2026, 14:19 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable
yes
HTTP status of an anonymous initialize
200
tools/list served without credentials
yes
Tools that change things, listed without credentials
3
Protocol version
2025-06-18
WWW-Authenticate on 401
not observed
resource_metadata in WWW-Authenticate
none
RFC 9728 protected resource metadata
none
Authorization servers
none
Legacy HTTP+SSE transport
no
Dynamic client registration
not observed
Client ID metadata documents
not observed
  • HighThe whole server

    The endpoint served tools/list without credentials, and the list has 3 tools that change things (1 irreversible, 2 write). Whether a call also works without credentials was not tested: tools are never called.

    Matched text

    https://buildersinfintech.ai/mcp: tools/list returned 23 tools to an anonymous client, including most_active_investors (irreversible), largest_rounds (write), about (write)

    What this check looks for

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http fintech-data https://buildersinfintech.ai/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__fintech-data__search_organizations",
      "mcp__fintech-data__get_organization",
      "mcp__fintech-data__search_people",
      "mcp__fintech-data__get_person",
      "mcp__fintech-data__list_funding_rounds",
      "mcp__fintech-data__funding_summary",
      "mcp__fintech-data__get_funding_index",
      "mcp__fintech-data__get_investor_scorecard",
      "mcp__fintech-data__search_products",
      "mcp__fintech-data__get_product",
      "mcp__fintech-data__find_providers",
      "mcp__fintech-data__list_provider_filters",
      "mcp__fintech-data__search_content",
      "mcp__fintech-data__get_content",
      "mcp__fintech-data__search_podcast_knowledge",
      "mcp__fintech-data__list_events",
      "mcp__fintech-data__list_topics",
      "mcp__fintech-data__list_countries",
      "mcp__fintech-data__get_daily_digest",
      "mcp__fintech-data__list_raising"
    ],
    "ask": [
      "mcp__fintech-data__largest_rounds",
      "mcp__fintech-data__most_active_investors",
      "mcp__fintech-data__about"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as fintech-data. Review it before you use it.

Capability tags behind 7 rules
  • mcp__fintech-data__get_organization untrusted-input
  • mcp__fintech-data__most_active_investors outbound
  • mcp__fintech-data__funding_summary private-data
  • mcp__fintech-data__get_product private-data, untrusted-input
  • mcp__fintech-data__search_content untrusted-input
  • mcp__fintech-data__list_topics untrusted-input
  • mcp__fintech-data__list_raising untrusted-input