established · 0.0 capability schema

llms-txt

Score 24.1 / 100 42 providers +18 via APIs 36 APIs Search apis.io →

Providers using this tag (42)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 2 Complete, well-documented, and agent-ready
Cracked APIAI AgentsAgent ToolsMCPTool Router2 APIs69.9TranscriptFetchTranscriptsSpeech-to-TextCaptionsYouTube2 APIs67.7
Strong 13 Solid coverage with minor gaps
Statable Stats APIAnalyticsWeb AnalyticsCookielessPrivacy1 API66.4Agent ReadyAgentsAgent ReadinessWebsite ScanningDeveloper Tools6 APIs64.9The Ainglish ProjectAI AgentsAgent CommunicationLanguage RegisterLinguistics4 APIs64.6RoxyAPIAstrologyVedic AstrologyNumerologyTarot2 APIs64.4Agent DiscoAI AgentsAgent DiscoverabilityWebsite AuditingDeveloper Tools4 APIs61.5Autoderm – AI Dermatology APIdermatology-apiai-dermatologyMedical ImagingTelehealth4 APIs61.1APIVerveAPI MarketplaceRESTJSONGraphQL1 API60.9AI for DatabaseArtificial IntelligenceDatabaseAnalyticsDeveloper Tools4 APIs60.8Adanos Market Sentiment APIMarketsSentimentStocksCryptocurrency8 APIs59.8Odds APISportsSports Bettingbetting-oddsbookmaker-odds2 APIs58.9PagesnapDeveloper ToolsWeb Scrapingweb-to-markdownscreenshot-api1 API58.6ReefAPIWeb DataData AggregationWeb ScrapingSERP1 API57.8ApstalAnalyticsWeb AnalyticsPrivacySession Replay2 APIs56.5
Developing 13 Usable, with meaningful gaps to close
BudgetPixelGenerative AIAI Image GenerationAI Video GenerationAI Music Generation2 APIs54.0iGaming ToolsiGamingOnline CasinoGamblingslot games2 APIs52.7MCP360MCPMCP ServerMCP GatewayAI Agents38 APIs51.8TweetAPItwitterXSocial MediaSocial Data2 APIs50.9한국주식데이터 (aikstockdata)South KoreaStock MarketFinancial DataOpen Data3 APIs48.9GeoloodsGeocodingPlace SearchLocationCoordinates2 APIs47.2Loa Healthcare Pricing APIHealthcarePrice Transparencymedical pricingHospitals2 APIs47.0QR Code CrafterQR CodesQR Code GenerationStatic QrDynamic QR2 APIs46.5Seshat MarketsFinanceFintechCryptocurrencyCommodities2 APIs45.8AI Crawler IndexAI crawlersweb crawlersRobots.txtUser Agents2 APIs45.4anewHTMLwebpageWebsitesURLs2 APIs45.2Mydentify Public APIProduct Discoverystartup directoriesLeaderboardsResearch2 APIs41.7TradeDataHub Public APIcontractor dataB2B DataBusiness ListingsDatasets1 API41.1
Thin 3 Limited public surface area
DerrickData EnrichmentEmail FinderPhone Findercompany-firmographics2 APIs35.8CuratorSearchAgent-NativeMCPOpenAPI2 APIs32.2QName AI WHOIS APIWHOISRDAPdomain-researchDomain Search1 API26.6
Emerging 8 Early or largely undocumented
TrickyBirdweb proxyunblockno accountno install1 API23.7Wib&Wob (symbients)CompanyAgentsA2Ax4021 API26.0ScalpStreamCompanyAgentsA2Ax4025 APIs25.2TradeBBtrading-journalTrade AnalyticsFintechtrading-tools1 API23.4Rates and LimitsTaxPayrollBenefitsIRS1 API18.3L2Calendarlineage2MMORPGGame ServersGaming1 API16.1Group 1 AutomotiveFortune 500AutomotiveAutomotive RetailVehicle Inventory1 API15.0PrudentialInsuranceUnited KingdomLife InsuranceHealth Insurance13.7
Minimal 3 Almost no public developer surface
PlantShop.meCompanyE-CommerceRetailPlants8.3QName AI WHOIS APIwhoisrdapdomain-researchdomain-search1 API7.4L2Calendarlineage2mmorpggame-serversgaming1 API4.2

APIs with this tag (36)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 1 Complete, well-documented, and agent-ready
Hive Civilization Llms.txt APIThe Llms.txt API from Hive Civilization — 1 operation(s) for llms.txt.74.7
Strong 8 Solid coverage with minor gaps
Red5 Agent-Native SurfacePublicly hosted llms.txt providing a structured index of Red5 products, use cases, and documentation for AI...63.6Red5 Pro Server APIREST/JSON API embedded in the Red5 Pro media server providing server info/ping/statistics, applications, st...63.6Stream Manager 2.0 APIREST/JSON API used by both Red5 Pro clusters and Red5 Cloud for Auth, Admin, Proxy, Streams, Streams Provis...63.6APIVerve GraphQL API (alpha)Single GraphQL endpoint that fans out to multiple APIs in one request. Explicitly labeled alpha / not for p...60.9APIVerve MCP ServerHosted remote MCP server (streamable HTTP) exposing every catalog endpoint as individual MCP tools with inp...60.9invinoveritas Llms.txt APIThe Llms.txt API from invinoveritas — 1 operation(s) for llms.txt.59.1Apstal MCP ServerHosted MCP server exposing Apstal analytics via JSON-RPC 2.0 over Streamable HTTP. Public tools (login, reg...56.5Pomo Llms.txt APIThe Llms.txt API from Pomo — 1 operation(s) for llms.txt.55.9
Developing 14 Usable, with meaningful gaps to close
Digits Llms.txt APIThe Llms.txt API from Digits — 1 operation(s) for llms.txt.53.0iGaming Tools MCP ServerFree public hosted MCP server (Streamable HTTP, no API key, read-only, not metered) exposing the same iGami...52.7TweetAPI Hosted MCP ServerHosted remote HTTP MCP server providing current TweetAPI docs and read-only live public-data tools. Uses OA...50.9TweetAPI tw-v2 REST APIREST API for public Twitter/X data with X-API-Key auth, JSON responses, and 76 documented endpoints across ...50.9Macaroon Network Llms.txt APIThe Llms.txt API from Macaroon Network — 1 operation(s) for llms.txt.50.51F916 Llms.txt APIThe Llms.txt API from 1F916 — 1 operation(s) for llms.txt.50.4Loa Healthcare Pricing MCP ServerHosted/remote MCP server 'LOA Healthcare Pricing' v1.0.0 over Streamable HTTP with 12 tools for CPT search,...47.0Opplevagent Llms.txt APIThe Llms.txt API from Opplevagent — 1 operation(s) for llms.txt.47.0Verified Digital Agents (VDA) Llms.txt APIThe Llms.txt API from Verified Digital Agents (VDA) — 1 operation(s) for llms.txt.46.2Marz Greta-Lock Network Llms.txt APIThe Llms.txt API from Marz Greta-Lock Network — 2 operation(s) for llms.txt.43.4Bounti Llms.txt APIThe Llms.txt API from Bounti — 1 operation(s) for llms.txt.42.0University of Twente llms.txt Programme CatalogA machine-readable study-programme document the university serves from its own web root at www.utwente.nl/l...41.5Finn-tannlege Llms.txt APIThe Llms.txt API from Finn-tannlege — 1 operation(s) for llms.txt.41.1AutoMQ Llms.txt APIThe Llms.txt API from AutoMQ — 1 operation(s) for llms.txt.40.3
Thin 7 Limited public surface area
Derrick MCP ServerHosted streamable-HTTP MCP server exposing 12 enrichment tools; also available as a local npm package (derr...35.8Derrick REST APIREST API for B2B data enrichment (emails, phones, profile/company enrichment, verification, search, SIRET/S...35.8Agent Failure Mode Registry Llms.txt APIThe Llms.txt API from Agent Failure Mode Registry — 1 operation(s) for llms.txt.35.3_done CatalogSingle-page agent-native catalog of the 27 _done pay-per-call utility APIs. Publishes a real llms.txt, a ro...35.2GetVocal Llms.txt APIThe Llms.txt API from GetVocal — 1 operation(s) for llms.txt.32.3THORChain Llms.txt APIThe Llms.txt API from THORChain — 1 operation(s) for llms.txt.31.8QName AI WHOIS REST APIApproval-gated REST API for WHOIS/RDAP lookups: GET /api/whois/{domain} (single), POST /api/whois/batch (ba...26.6
Emerging 4 Early or largely undocumented
TrickyBird Agent SurfaceAgent-native interfaces for TrickyBird: a structured llms.txt and a documented WebMCP in-page tool surface....23.7TradeBBTradeBB exposes a single publicly consumable machine-readable interface: an llms.txt file designed for LLM ...23.4Rates and Limits JSON APIKeyless, unauthenticated REST-style JSON API serving US tax, payroll, benefits, and wage figures with bundl...18.3L2Calendar Agent-Native ContentAgent-native content surface exposing machine-readable summaries via llms.txt and llms-full.txt for AI assi...16.1
Minimal 2 Almost no public developer surface
QName AI WHOIS REST APIApproval-gated REST API for WHOIS/RDAP lookups: GET /api/whois/{domain} (single), POST /api/whois/batch (ba...7.4L2Calendar Agent-Native ContentAgent-native content surface exposing machine-readable summaries via llms.txt and llms-full.txt for AI assi...4.2

Companies reaching this through an API (18)

These companies publish an API, specification or operation carrying “llms-txt” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

1F916 _done Agent Failure Mode Registry AutoMQ Bounti Digits Finn-tannlege GetVocal Hive Civilization invinoveritas Macaroon Network Marz Greta-Lock Network Opplevagent Pomo Red5 THORChain University of Twente Verified Digital Agents (VDA)

Score breakdown

Frequency
52.4
log-scaled weighted occurrences
Breadth
1.0
spread across providers
Quality lift
47.5
mean composite of providers using it
Cohesion
8.5
strength of nearest seed neighbor

Related tags

Robots.txt 8 co-occurrences x402 14 co-occurrences OpenAPI 18 co-occurrences Agent Skills 8 co-occurrences MCP Server 5 co-occurrences A2A 22 co-occurrences

Where this tag comes from

Api tag36
Provider tag42
Openapi tag15
Openapi op tag16

Cohort brief

Auto-generated

The 42 providers in the APIs.io catalog tagged llms-txt, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
42
all scored
Mean Kin Score
43.1
+20.2 vs catalog 22.9
Mean Agent Readiness
32.7
+20.8 vs catalog 11.9
Spread
4.1–70.3
median 46.9 · σ 18.7
How the 42 split by band
Exemplar 2Strong 14Developing 12Thin 2Emerging 9Minimal 3
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 50 23.2 +26.8 42
Access Clarity 52 26.5 +25.5 42
Operational Transparency 33.6 13.7 +19.9 42
Contract Quality 34.1 17.6 +16.5 42
Discoverability 69.9 58.1 +11.8 42
Contract Governance 10.2 6.3 +3.9 42

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 57% 14% +43
MCP server (first-party) 62% 12% +50
Agent Skills 0% 0% 0
OAuth scopes 24% 11% +13
Security 95% 98% -3
Arazzo workflows 0% 2% -2
Governance rules 0% 14% -14

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Cracked API 70.3
  2. 2 TranscriptFetch 67.6
  3. 3 Statable Stats API 65.9
  4. 4 Agent Ready 63.5
  5. 5 RoxyAPI 63.5
  6. 6 The Ainglish Project 61.9
  7. 7 APIVerve 60.8
  8. 8 Autoderm – AI Dermatology API 60.5
  9. 9 AI for Database 60.2
  10. 10 Adanos Market Sentiment API 59.7
Top by Agent Readiness
  1. 1 Agent Ready 72.9
  2. 2 Cracked API 68.5
  3. 3 TranscriptFetch 58.1
  4. 4 Statable Stats API 57.6
  5. 5 The Ainglish Project 57
  6. 6 Loa Healthcare Pricing API 55.9
  7. 7 BudgetPixel 55.3
  8. 8 anew 50.6
  9. 9 APIVerve 50
  10. 10 Agent Disco 49.1
All 42 members of this roster resolve to a scored provider in the catalog.
Coverage caveat. 30 of 42 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 5 October 2026, across 29093 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/llms-txt"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/llms-txt"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/llms-txt/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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