Agent Readiness Score

langchain.com

54 — Developing. Agents can find parts of this site, but key capabilities are hard to reach.

45 of 45 checks conclusive · Confidence High · Evidence coverage 100%

HonestClaw measured how well langchain.com's site and APIs work for AI agents — across 9 dimensions and 45 automated checks.

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Dimensions

Discoverability13.9/24

Content Accessibility12.9/24

Bot Access Control0/12

Protocol & Capability Discovery20.9/41

Authentication & Credentials12/19

Documentation Quality5.5/10

Structured Data I/O12.1/13

Observable State & Reliability9.1/15

Agent Safety & Trust4.7/11

Checks

Discoverability

Subdomain sweepsubdomain-sweepAn agent-relevant subdomain is live and serves its expected content kind (docs.langchain.com).Parseable

Canonical domaincanonical-domainRoot and www converge on www.langchain.com, with a matching canonical tag.Cross-verified

robots.txtrobots-txtrobots.txt at https://langchain.com/robots.txt declares a sitemap. Declared sitemap https://www.langchain.com/sitemap.xml resolves as valid XML.Cross-verified

sitemap.xmlsitemap-xmlhttps://www.langchain.com/sitemap.xml is a valid sitemap (585 location(s)), but without lastmod or non-homepage URLs.Parseable

API existenceapi-existenceA real API surface is declared at https://docs.langchain.com/langsmith/langsmith-platform-openapi.json: the spec lists servers and paths. (source: spec)Parseable

API catalogapi-catalogNo RFC 9727 API Catalog found at /.well-known/api-catalog.Not detected

API versioningapi-versioningThe API version lifecycle is documented at https://docs.langchain.com/oss/javascript/versioning, including deprecation/sunset. (source: docs)Cross-verified

Content Accessibility

llms.txtllms-txtA curated llms.txt index is published on a non-top subdomain at https://docs.langchain.com/llms.txt: 173 links across 5 sections. Its credit is capped at useful because it is not published on the main domain.Useful

Freshness signalsfreshness-signalsA single freshness signal is present (Last-Modified header).Parseable

Crawl-cost estimatecrawl-cost-estimateInformational — not scoredA manageable sitemap (585 page URLs) helps agents estimate crawl cost.Useful

llms-full.txtllms-full-txtNo llms-full.txt file found (HTML pages at .txt paths do not qualify).Not detected

ai.txtai-txtNo ai.txt file found (HTML pages at .txt paths do not qualify).Not detected

Raw content extractabilityraw-content-extractabilityReadable content is extractable without JavaScript on 2 probed surface(s) with a strong main-content ratio (67% on the homepage).Cross-verified

Markdown twinmarkdown-twinA twin exists at https://docs.langchain.com/index.md but the body is not clearly markdown-structured.Detected

Bot Access Control

AI bot rulesai-bot-rulesrobots.txt is readable but declares no AI-bot-specific rules.Not detected

Content signalscontent-signalsrobots.txt is readable but declares no Content-Signal line.Not detected

RSL licensingrslrobots.txt is readable but declares no RSL License directive.Not detected

TDM reservationtdmrepNo TDMRep policy found at /.well-known/tdmrep.json.Not detected

Protocol & Capability Discovery

MCP descriptormcp-descriptorInformational — not scoredAn MCP server is described at https://docs.langchain.com/.well-known/mcp.json, but the description doesn't include a web address for the server.Parseable

.well-known indexwell-known-indexNo non-owned /.well-known/ descriptors found.Not detected

MCP Server Cardmcp-server-cardA file exists at https://docs.langchain.com/.well-known/mcp/server-card.json, but it doesn't contain the fields that describe an MCP Server Card.Detected

A2A Agent Carda2a-agent-cardAn A2A Agent Card at https://docs.langchain.com/.well-known/agent-card.json declares 1 skill(s) and a connectable endpoint.Useful

MCP supportmcp-supportFirst-party documentation at https://docs.langchain.com/langsmith/langsmith-remote-mcp identifies the MCP endpoint https://api.smith.langchain.com/mcp and explains both its capabilities and how clients connect or authenticate.Cross-verified

DNS-AIDdns-aidNo DNS-AID index found at _index._agents.langchain.com.Not detected

GraphQL surfacegraphql-surfaceNo GraphQL transport surface found at conventional paths (GET-only; no introspection issued).Not detected

Auth discoveryauth-discoveryNo standardized authentication-discovery surface found.Not detected

SDK availabilitysdk-availabilitySDK libraries page at https://docs.langchain.com/langsmith/annotation-queues-sdk: 2 GitHub repos, 0 registry links, 0 install commands (2 pointers).Cross-verified

Link headerslink-headersNo RFC 8288 Link headers found on any probed response.Not detected

OpenAPI specificationopenapi-specValid OpenAPI 3.1.0 spec at https://docs.langchain.com/langsmith/langsmith-platform-openapi.json: 542 operations, 787 schemas, 100% response coverage, servers declared.Cross-verified

Rate limit documentationrate-limit-docsRate limits are documented at https://docs.langchain.com/langsmith/llm-gateway-rate-limit-policies with a concrete limit and rate-limit response headers. To reach the top level, it would need 429 handling, Retry-After guidance, and tier/plan differences.Useful

WebMCPwebmcpInformational — not scoredWebMCP browser probing is not yet available in this scanner release.Couldn't verify

Authentication & Credentials

Programmatic auth flowprogrammatic-auth-flowA programmatic auth flow is documented at https://docs.langchain.com/langsmith/auth, naming a non-interactive grant and a token endpoint. To reach the top level, it would need scopes and token expiry/refresh documented.Useful

Auth documentationauth-documentationAuthentication is fully documented at https://docs.langchain.com/langsmith/add-auth-server, naming complete method(s) and how they are sent, corroborated across surfaces or covering multiple methods.Cross-verified

Sandbox environmentsandbox-environmentA test environment is documented at https://docs.langchain.com/langsmith/sandbox-auth-proxy with the detail an agent needs to start testing (test credentials or a test base URL). To reach the top level, it would need a full test workflow and separately documented test credentials.Useful

Credential managementcredential-managementNo credential management documentation found at the standard docs locations an agent would check.Not detected

Documentation Quality

API reference depthapi-reference-depthAPI reference content is mentioned at https://docs.langchain.com/api-reference/integrations-v1/list-github-integrations, but not on a dedicated reference page.Detected

Changelog presencechangelog-presenceA changelog is published at https://docs.langchain.com/langsmith/changelog with multiple recent dated entries, indicating it is actively maintained.Cross-verified

Structured Data I/O

Structured data I/Ostructured-data-ioThe spec at https://api.host.langchain.com/openapi.json declares typed, consistent response schemas (98% of operations) with a pagination pattern and a structured error envelope. (source: spec)Cross-verified

Machine-readable pricingmachine-readable-pricingA response at https://langchain.com/pricing.json looks JSON-like but did not parse as JSON.Detected

Data export APIdata-export-apiA data export API is fully documented at https://docs.langchain.com/langsmith/big-query-bulk-export, with a bulk endpoint, async-job or pagination, and a stated export format.Cross-verified

Observable State & Reliability

Status & health endpointsstatus-and-healthHealth/status endpoint found at https://global.status.smith.langchain.com/api/v2/status.json (HTTP 200).Detected

Webhook documentationwebhook-documentationWebhooks are fully documented at https://docs.langchain.com/langsmith/engine-webhooks, with event types, payload shapes, signature verification, and delivery/retry semantics.Cross-verified

Retry & idempotencyretry-and-idempotencyRetry/idempotency is documented at https://docs.langchain.com/langsmith/evaluate-with-retry with an idempotency-key mechanism or a concrete retry strategy. To reach the top level, it would need an idempotency key and backoff/retry guidance together.Useful

Error documentationerror-documentationAn error documentation page exists at https://docs.langchain.com/oss/javascript/common-errors, but it doesn't enumerate specific error codes or a documented error response shape.Parseable

Machine payments (x402/MPP)x402-or-mpp-supportInformational — not scoredNo machine-payment signal observed (no HTTP 402, no payment-required response header, and no /.well-known/x402.json manifest). Payment support cannot be ruled out from an unauthenticated probe.Couldn't verify

Agent Safety & Trust

security.txtsecurity-txtNo security.txt found at /.well-known/security.txt or /security.txt.Not detected

Org identity signalsorg-identityHomepage exposes one org-identity signal (social).Detected

Metadata consistencymetadata-consistencyHomepage metadata (canonical, Open Graph, schema) is present and consistent.Cross-verified

Legal policy pageslegal-pagesBoth privacy and terms policies are discoverable with substantive content.Useful