established · 0.0 capabilitymarket actiondomain

RAG

Score 26.3 / 100 75 providers +20 via APIs 46 APIs Search apis.io →
Variants seen in the corpus: RAGRagrag

Providers using this tag (75)

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

Exemplar 1 Complete, well-documented, and agent-ready
DustAgentsArtificial IntelligenceCustom WorkflowsData Sources9 APIs73.0
Strong 9 Solid coverage with minor gaps
TranscriptFetchTranscriptsSpeech-to-TextCaptionsYouTube1 API64.7DifyArtificial IntelligenceLLMOpsBackend-as-a-ServiceAgents2 APIs64.0CompresrLLMContext CompressionPrompt Engineering1 API62.8SeekrArtificial IntelligenceGenerative AIAgentsLLM8 APIs61.3LlamaParseDocument ParsingOCRPDFLLM1 API60.3MixedbreadArtificial IntelligenceEmbeddingsRerankingSearch12 APIs58.1PineconeVector DatabasesArtificial IntelligenceEmbeddings6 APIs56.5Amazon BedrockArtificial IntelligenceFoundation ModelsGenerative AILLM2 APIs56.2VectaraArtificial IntelligenceAgentsCorporaEmbeddings1 API54.3
Developing 32 Usable, with meaningful gaps to close
ToolhouseAgent InfrastructureAI AgentsAI WorkersBackend-as-a-Service1 API53.7CrustAPISearchGoogle MapsLinkedInSERP / Web Scraping1 API52.3CogneeArtificial IntelligenceMemoryKnowledge Graph1 API51.9PixeltableCompanyAi DataMultimodal AIAI Data Infrastructure3 APIs51.3EliumCompanySoftware-as-a-ServiceKnowledge-ManagementKnowledge Base2 APIs50.8OpikLLMEvaluationObservabilityTracing1 API50.5LettaArtificial IntelligenceAgentsStateful AgentsMemory2 APIs50.3turbopufferVector SearchFull-Text SearchHybrid SearchBM251 API49.9LanceDBVector DatabaseMulti-ModalLance FormatLakehouse1 API49.6ChromaArtificial IntelligenceAI-NativeApache 2.0Cloud2 APIs49.3AirweaveCompanyArtificial IntelligenceSearch1 API48.6FlowiseAgentsAgent WorkflowsArtificial IntelligenceLarge Language Models1 API48.5DataStaxCompanyEnterpriseDatabaseVector Database1 API46.7Stacks AiCompanyArtificial IntelligenceAgentsLLM1 API45.4TrieveSearchVector SearchHybrid Search1 API45.3UnstructuredDocument ProcessingETLLLM2 APIs43.8Voyant.ioArtificial IntelligenceContext ManagementBrand GovernanceProduct Marketing2 APIs43.7InkeepArtificial IntelligenceSupportAgents1 API43.6Vellum AILLM PlatformPrompt EngineeringWorkflowsEvaluations1 API43.4AI21 LabsArtificial IntelligenceFoundation ModelsLLMJamba1 API43.1NucliaArtificial IntelligenceSearchKnowledge Base1 API42.9SeltzCompanyWeb SearchAI InfrastructureRetrieval1 API42.5ZeroEntropyCompanyEnterprise SaasArtificial IntelligenceSearch1 API41.8LangflowArtificial IntelligenceAgentsWorkflowsLow-Code1 API41.7Contextual AIArtificial IntelligenceLLMGrounded Language Model1 API41.6kapa.aiArtificial IntelligenceAnswer EngineDocumentation1 API41.3TopkCompanySearchVector SearchHybrid Search3 APIs40.6GistCompanyArtificial IntelligenceGenerative AIAdvertising2 APIs40.4LlamaCloudArtificial IntelligenceDocument ParsingExtractionIndexing1 API40.4TensorlakeDocument ExtractionData ExtractionDocument IngestionDocument Parsing1 API40.2RagieArtificial IntelligenceRetrievalVector Search1 API40.0LinkupArtificial IntelligenceLLMWeb SearchGrounding1 API39.7
Thin 24 Limited public surface area
ChunkrDocument ParsingOCRChunking1 API38.8Haystack / deepsetArtificial IntelligenceLLMOpen-Source1 API38.8MyScaleVector DatabaseSQLClickHouseVector Search1 API38.5SmartMindCompanyArtificial IntelligenceMachine-LearningDatabase1 API38.2MendableArtificial IntelligenceAnswersEnterprise Search1 API38.1DelphiCompanyArtificial IntelligenceAI ClonesDigital Minds1 API37.9DoclingDocumentsParsingPDFOCR2 APIs37.9Nomic AIEmbeddingsVector DatabaseData ExplorationLLM1 API37.8VectorizeArtificial IntelligenceVectorizationEmbeddings1 API37.8LangbaseArtificial IntelligenceAgentsLLM1 API37.7KineticaDatabaseAnalyticsgpu-accelerationReal-Time Analytics3 APIs37.6JulepCompanyAI AgentsLLMAgents1 API37.5OramaSearchVector SearchOpen-Source1 API37.4MastraAgentsArtificial IntelligenceJavaScript1 API36.6OndemandCompanyArtificial IntelligenceMachine-Learning1 API35.9OpenLawsLegalLawStatutesRegulations2 APIs35.2SuperlinkedVectorsEmbeddingsVector SearchRetrieval1 API33.5LucidworksSearchArtificial IntelligenceEnterprise SearchVector Search6 APIs33.4Voyage AIEmbeddingsRerankersSemantic Search1 API32.9Eder LabsCompanyCloud SaasAI AgentsMemory1 API30.3GleanAgentsArtificial IntelligenceAnswersChat1 API29.1Open WebUILLMOpen-SourceSelf-HostedOllama1 API28.6AIMonCompanyAi MlLLM ObservabilityAI Monitoring1 API28.5KAITOArtificial IntelligenceGPUInferenceKubernetes1 API26.2
Emerging 8 Early or largely undocumented
SuperduperAI FrameworkVector SearchLLMs6 APIs25.9MirielCompanyArtificial IntelligenceContext EngineRetrieval7 APIs25.1PostgresMLCompanyAi MlMachine-LearningVector Search24.1HebbiaArtificial IntelligenceDocument AIDue DiligenceEnterprise Search2 APIs21.0NabooCompanyArtificial IntelligenceAI AgentsKnowledge Graph14.4Refact.aiArtificial IntelligenceCoding AssistantAI AgentAutonomous Agents2 APIs14.3SylloTipsCompanyArtificial IntelligenceKnowledge-ManagementEnterprise AI12.3TruEra (Snowflake)AI EvaluationObservabilityAI GovernanceLLM1 API12.3
Minimal 1 Almost no public developer surface
Theta EdgeCloudDistributed ComputingGPU ComputeAI ComputeAI Inference8.8

APIs with this tag (45)

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 2 Complete, well-documented, and agent-ready
NVIDIA NIM Embeddings APIOpenAI-compatible embeddings endpoint (/v1/embeddings) backed by NVIDIA NeMo Retriever text embedding model...68.3NVIDIA NIM Reranking APINeMo Retriever cross-encoder reranking endpoint (/v1/ranking) for scoring candidate passages against a quer...68.3
Strong 12 Solid coverage with minor gaps
Cloudflare AI Search APIThe Cloudflare AI Search API provides fully managed retrieval-augmented generation (RAG) pipelines. Develop...65.1TranscriptFetch REST APIREST API (current version v2, path-prefixed) for fetching timestamped transcripts from YouTube, TikTok, Ins...64.7Dify Chunks APIOperations for managing document chunks and child chunks. 9 operation(s) from the Dify Service API.64.0Dify Knowledge Bases APIOperations for managing knowledge bases, including creation, configuration, and retrieval. 6 operation(s) f...64.0Vector Search Indexes APIManage vector search indexes for similarity search and retrieval-augmented generation workloads.63.4Auth0 for AI AgentsIdentity and authorization product line for AI agents. Bundles Token Vault (delegated API credentials for G...60.8Feedly Rag APIThe Rag API from Feedly — 1 operation(s) for rag.59.4Factiva Retrieval APIProvides retrieval functionality that returns licensed news articles as part of trusted data sources in a r...59.3Gravitee AI Agent ManagementGravitee AI Agent Management brings the API management discipline to agentic AI ecosystems. It is delivered...56.8Amazon Bedrock Agent APIThe Amazon Bedrock Agent API provides operations for managing and configuring autonomous AI agents, knowled...56.2Amazon Bedrock Agent Runtime APIThe Amazon Bedrock Agent Runtime API provides operations for invoking Bedrock agents and retrieving content...56.2Vectara Chat APIMulti-turn conversational interface over a Vectara corpus that maintains chat history and produces grounded...54.3
Developing 13 Usable, with meaningful gaps to close
CrustAPIREST API for structured Google and public LinkedIn data, key-authenticated, with a published OpenAPI spec a...52.3Elium MCP ServerA remote Model Context Protocol server, announced 3 June 2026, served per tenant at https://{platform}.eliu...50.8University of Amsterdam Rag APIThe rag API from University of Amsterdam — 4 operation(s) for rag.50.1NationGraph RAG APIThe RAG API from NationGraph — 3 operation(s) for rag.50.0Gemini Embeddings APICreate embeddings for text48.0StepFun Vector Stores APIKnowledge-base (vector store) management — create/list/retrieve/delete stores and attach or remove files fo...47.6Trieve Message APIMessages are turns within a topic; the Message API drives RAG completions, streaming responses, and citatio...45.3Trieve Topic APITopics persist conversational state for generative-AI chat sessions backed by a Trieve dataset.45.3Voyant.io Rag APIThe Rag API from Voyant.io — 7 operation(s) for rag.43.7AI21 File Library APIManaged file storage for RAG workflows. Upload, list, retrieve, update, and delete documents that Maestro a...43.1Arcee AI RAG APIThe RAG API from Arcee AI — 9 operation(s) for rag.42.3TopK Dataset APIUnstructured document ingestion, semantic search, and grounded question answering. Upload document files (P...40.6AI RAG Injector PluginAutomates retrieval-augmented generation by injecting retrieved context into prompts at the gateway, so app...40.2
Thin 13 Limited public surface area
Docling GraphTransform unstructured documents — once normalized to `DoclingDocument` — into validated, rich, queryable k...37.9Docling LangChain IntegrationFirst-party LangChain document loader and chunker for Docling. Drops Docling output directly into LangChain...37.9FLC Greenbook APIPublic API behind the FLC Green Book mobile app. One published operation performs retrieval-augmented searc...37.5Tonic ValidateTonic Validate is an open-source RAG evaluation framework and metrics platform for measuring retrieval-augm...36.5LiteLLM Rag APIThe Rag API from LiteLLM — 2 operation(s) for rag.33.0LiteLLM Vector Stores APIProvides /vector_stores endpoints for creating and managing vector stores, file operations within vector st...33.0Voyage AI Contextualized Embeddings APIEndpoint that embeds chunks while conditioning on surrounding document context, improving recall for long-d...32.9Voyage AI Rerank APIReranking endpoint that scores a list of candidate documents against a query and returns relevance scores. ...32.9LlamaIndex Python FrameworkLlamaIndex is an open-source Python framework for building LLM-powered applications including agents, RAG p...31.4LlamaIndex TypeScript FrameworkLlamaIndex TypeScript is the JavaScript and TypeScript implementation of the LlamaIndex framework for build...31.4Glean chat APIThe chat API from Glean — 8 operation(s) for chat.29.1Open WebUI APIREST API exposed by a self-hosted Open WebUI instance. Endpoints cover chat completions (proxying upstream ...28.6KAITO RAGEngine APIRAGEngine exposes endpoints for managing retrieval-augmented generation services with embedded vector datab...26.2
Emerging 5 Early or largely undocumented
DeepEval (Confident AI)DeepEval is an open-source LLM evaluation package, paired with Confident AI as the hosted observability/eva...21.7GalileoGalileo is an enterprise AI observability and evaluation engineering platform. The product line emphasizes ...21.7RagasRagas is an open-source evaluation library focused on retrieval-augmented generation, described in its own ...21.7OpenLLMetry Vector Database InstrumentationsInstrumentations for vector databases used in retrieval-augmented generation pipelines — Chroma, Pinecone, ...17.2Ragas Python LibraryThe Ragas Python library is the primary surface of the project, installed via `pip install ragas` and impor...16.3

Companies reaching this through an API (20)

These companies publish an API, specification or operation carrying “RAG” 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.

Arcee AI Auth0 Azure Databricks Cloudflare Evals Factiva Federal Laboratory Consortium for Technology Transfer Feedly Gemini Gravitee Kong AI Gateway LiteLLM Llamaindex NationGraph NVIDIA NIM OpenLLMetry Ragas StepFun Tonic.ai University of Amsterdam

Score breakdown

Frequency
57.6
log-scaled weighted occurrences
Breadth
2.1
spread across providers
Quality lift
46.4
mean composite of providers using it
Cohesion
13.8
strength of nearest seed neighbor

Related tags

Retrieval 21 co-occurrences Vector Search 21 co-occurrences Embeddings 21 co-occurrences LLM 33 co-occurrences Vector Database 9 co-occurrences Tools 12 co-occurrences Chat 19 co-occurrences Vectors 7 co-occurrences

Where this tag comes from

Provider tag75
Api tag46
Openapi tag6
Openapi op tag28

Cohort brief

Auto-generated

The 74 providers in the APIs.io catalog tagged RAG, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
74
all scored
Mean Kin Score
41.3
+17.4 vs catalog 23.9
Mean Agent Readiness
23.2
+11.2 vs catalog 12
Spread
8.8–73
median 40.5 · σ 12.3
How the 74 split by band
Exemplar 1Strong 9Developing 32Thin 24Emerging 7Minimal 1
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 46 19.8 +26.2 74
Operational Transparency 34 14 +20 74
Developer Ergonomics 41 23.4 +17.6 74
Access Clarity 41.8 26.5 +15.3 74
Discoverability 69.8 61.2 +8.6 74
Contract Governance 8.3 6.4 +1.9 74

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) 19% 10% +9
MCP server (first-party) 23% 13% +10
Agent Skills 0% 0% 0
OAuth scopes 11% 11% 0
Security 97% 97% 0
Arazzo workflows 3% 2% +1
Governance rules 28% 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 Dust 73
  2. 2 TranscriptFetch 64.7
  3. 3 Dify 64
  4. 4 Compresr 62.8
  5. 5 Seekr 61.3
  6. 6 LlamaParse 60.3
  7. 7 Mixedbread 58.1
  8. 8 Pinecone 56.5
  9. 9 Amazon Bedrock 56.2
  10. 10 Vectara 54.3
Top by Agent Readiness
  1. 1 TranscriptFetch 46.2
  2. 2 Airweave 44
  3. 3 Dify 40.6
  4. 4 Mixedbread 35.9
  5. 5 Seekr 35.8
  6. 6 Ondemand 35.8
  7. 7 OpenLaws 35.8
  8. 8 Compresr 35.6
  9. 9 Voyant.io 34.6
  10. 10 Chroma 34.2
All 75 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 15 September 2026, across 27661 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/rag"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/rag"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/rag/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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