Technology · Agentic → Agent Protocols · Open Source · wiki:deep
Model Context Protocol
Model Context Protocol (MCP) is an open specification (plus schema and official docs) for how AI applications (hosts/clients) connect to servers that expose tools, resources, and prompts through a standardized, capability-negotiated interface. The canonical repo holds the spec and TypeScript→JSON Schema definitions (e.g. schema dated 2026-07-28 in-tree); SDKs live in sibling repos (Python, TypeScript, Go, C#, …). MIT on the spec repo (map may show NOASSERTION — verify LICENSE). Created by David Soria Parra and Justin Spahr-Summers.
Why it matters here
Preferred research shape for the tool bus: observe → propose → execute mounts capabilities as MCP servers instead of a proprietary plugin API. Discovery, least privilege, and audit become tractable because surfaces are explicit. Prefer A2A when the peer is another opaque agent; pair with an MCP gateway/registry before workers dial arbitrary URLs. Protocol ≠ policy gate or ledger.
How it works
Hosts speak MCP to servers; negotiate capabilities; invoke tools, read resources, and fetch prompts. Many servers wrap filesystems, APIs, browsers, or internal systems behind one client protocol.
- Run or adopt MCP servers for needed capabilities.
- Configure host/runtime clients (IDE, agent OS, gateway).
- Negotiate capabilities; call tools/resources/prompts.
- Log invocations to the case ledger; enforce allowlists and human gates on side effects.
Related: agent2agent-protocol · mcp-gateway-registry · mcp-registry · agent-gateway · topics/12-central-nervous-system · topics/33-skill-registry
Scroll inside the canvas to pan
When to reach for it
- Use when: you need a standard host↔tool/resources/prompts interface across many servers.
- Skip when: the only need is agent↔agent collaboration (agent2agent-protocol) or a single in-process tool table.
- Prefer instead: A2A for opaque peer agents; keep MCP for capability mounting.
Limits
- Server sprawl: unvetted MCP URLs are a supply-chain and data-exfil risk — registry/gateway required.
- Spec drift: pin schema/SDK versions; clients and servers must match.
- Not IAM: MCP exposes tools; Keycloak/OPA/Cedar still decide who may call them.
- Not the ledger: tool results must be attributed to cases separately.
Linked from
Catalog backlinks — what points here (wiki “what links here”).
Features
- agent-identity-interoperability
- apis-sdks-mcp-extensibility
- mcp-tools
- multi-agent-collaboration
- open-source
- r2-02-assistant-expert
- r2-ecosystem-synthesis
- r2-master-synthesis
- wt-master-synthesis
- wt-tools-actions
Stacks
Peers
Document management
What we checked
Claims below are backed by science sources on disk.
Spec / architecture
MCP architecture — host / client / server · MODERATE
“The Model Context Protocol (MCP) follows a client-host-server architecture where each host can run multiple client instances.”
Spec revision notes
Model Context Protocol — Specification · MODERATE
“Model Context Protocol (MCP) is an open protocol that enables seamless integration between LLM applications and external data sources and tools.”
MCP vs A2A contrast
A Comparative Study of MCP and A2A for Inter-Agent Coordination · MODERATE
“MCP can support inter-agent coordination in constrained LLM-based systems through a comparatively lightweight implementation model with lower coordination complexity.”
In this research stack
Features and peers linked from the catalog map — not a second product surface.
Features it supports
- agent-identity-interoperability
- apis-sdks-mcp-extensibility
- mcp-tools
- multi-agent-collaboration
- open-source
- r2-02-assistant-expert
- r2-ecosystem-synthesis
- r2-master-synthesis
- wt-master-synthesis
- wt-tools-actions
Same cell
Stack
Document management
- affinda
- candice-ai
- docsum
- docsumo
- docsynecx
- docusafe
- docuville
- docuware
- dokken
- doxsuite
- eigenpal
- eldoc
- eondocs
- extend
- instabase
- klearstack
- kodori
- laserfiche
- m-files
- mindee
- mps-docs
- nectain
- nurie
- paperoffice
- parsewise
- reducto
- revver
- rossum
- unsiloed-ai
- vertesia
Source
Primary repo github.com/modelcontextprotocol/modelcontextprotocol · Open Source
technologies/model-context-protocol/README.md
Research inventory
9 tags · 41 out · 43 in · 3 artifacts · 0 gaps · 34 corpus docs
Catalog tags
- landscape.layer
- Agentic
- landscape.subcategory
- Agent Protocols
- license_tag
- Open Source
- maps.dm
- present
- maps.features
- 10
- one_liner
- Agentic
- review.depth
- science
- slug
- model-context-protocol
- title
- Model Context Protocol
Artifacts
- dm_map · present · technologies/model-context-protocol/document-management.md
- features_map · present · technologies/model-context-protocol/features.md
- readme · present · technologies/model-context-protocol/README.md
Out · alternative_to
- agent2agent-protocoltechnology
Out · dm_axis
- affindadm_vendor · dm_vendor
- candice-aidm_vendor · dm_vendor
- docsumdm_vendor · dm_vendor
- docsumodm_vendor · dm_vendor
- docsynecxdm_vendor · dm_vendor
- docusafedm_vendor · dm_vendor
- docuvilledm_vendor · dm_vendor
- docuwaredm_vendor · dm_vendor
- dokkendm_vendor · dm_vendor
- doxsuitedm_vendor · dm_vendor
- eigenpaldm_vendor · dm_vendor
- eldocdm_vendor · dm_vendor
- eondocsdm_vendor · dm_vendor
- extenddm_vendor · dm_vendor
- instabasedm_vendor · dm_vendor
- klearstackdm_vendor · dm_vendor
- kodoridm_vendor · dm_vendor
- laserfichedm_vendor · dm_vendor
- m-filesdm_vendor · dm_vendor
- mindeedm_vendor · dm_vendor
- mps-docsdm_vendor · dm_vendor
- nectaindm_vendor · dm_vendor
- nuriedm_vendor · dm_vendor
- paperofficedm_vendor · dm_vendor
- parsewisedm_vendor · dm_vendor
- reductodm_vendor · dm_vendor
- revverdm_vendor · dm_vendor
- rossumdm_vendor · dm_vendor
- unsiloed-aidm_vendor · dm_vendor
- vertesiadm_vendor · dm_vendor
Out · maps_to
- agent-identity-interoperabilityfeature
- apis-sdks-mcp-extensibilityfeature
- mcp-toolsfeature
- multi-agent-collaborationfeature
- open-sourcefeature
- r2-02-assistant-expertfeature
- r2-ecosystem-synthesisfeature
- r2-master-synthesisfeature
- wt-master-synthesisfeature
- wt-tools-actionsfeature
In · alternative_to
- agent2agent-protocoltechnology
In · dm_axis
- affindadm_vendor · technology
- candice-aidm_vendor · technology
- docsumdm_vendor · technology
- docsumodm_vendor · technology
- docsynecxdm_vendor · technology
- docusafedm_vendor · technology
- docuvilledm_vendor · technology
- docuwaredm_vendor · technology
- dokkendm_vendor · technology
- doxsuitedm_vendor · technology
- eigenpaldm_vendor · technology
- eldocdm_vendor · technology
- eondocsdm_vendor · technology
- extenddm_vendor · technology
- instabasedm_vendor · technology
- klearstackdm_vendor · technology
- kodoridm_vendor · technology
- laserfichedm_vendor · technology
- m-filesdm_vendor · technology
- mindeedm_vendor · technology
- mps-docsdm_vendor · technology
- nectaindm_vendor · technology
- nuriedm_vendor · technology
- paperofficedm_vendor · technology
- parsewisedm_vendor · technology
- reductodm_vendor · technology
- revverdm_vendor · technology
- rossumdm_vendor · technology
- unsiloed-aidm_vendor · technology
- vertesiadm_vendor · technology
In · in_stack
- agentic-agent-protocolsstack · alternative_slot
- mcp-tool-planestack · primary
In · maps_to
- agent-identity-interoperabilityfeature
- apis-sdks-mcp-extensibilityfeature
- mcp-toolsfeature
- multi-agent-collaborationfeature
- open-sourcefeature
- r2-02-assistant-expertfeature
- r2-ecosystem-synthesisfeature
- r2-master-synthesisfeature
- wt-master-synthesisfeature
- wt-tools-actionsfeature
Corpus tags
- category
- Agentic → Agent Protocols
- dedication
- open-source
- feature
- agent-identity-interoperabilityapis-sdks-mcp-extensibilitymcp-toolsmulti-agent-collaborationopen-sourcer2-02-assistant-expertr2-ecosystem-synthesisr2-master-synthesiswt-master-synthesiswt-tools-actions
- kind
- map_edgetech_featurestech_quotetech_readmetech_science_sourcetech_section
- needs_deepen
- false
- quality
- ok
- section
- Document management mapEvidenceFeatures mapGitHub mapHow it worksLimits & failure modesLinksScientific notesWhat it isWhen to use / skipWhy it matters here
- slug
- model-context-protocol
- source_id
- mcp-architecture-2024-11mcp-spec-2025-11-25mcp-vs-a2a-2607-23884
- technology
- model-context-protocol
Corpus documents (34)
map_edge · 10
- model-context-protocol → agent-identity-interoperability
- model-context-protocol → apis-sdks-mcp-extensibility
- model-context-protocol → mcp-tools
- model-context-protocol → multi-agent-collaboration
- model-context-protocol → open-source
- model-context-protocol → r2-02-assistant-expert
- model-context-protocol → r2-ecosystem-synthesis
- model-context-protocol → r2-master-synthesis
- … +2 more
tech_features · 1
- Model Context Protocol · features
tech_quote · 8
- Model Context Protocol · mcp-architecture-2024-11
- Model Context Protocol · mcp-architecture-2024-11
- Model Context Protocol · mcp-architecture-2024-11
- Model Context Protocol · mcp-spec-2025-11-25
- Model Context Protocol · mcp-spec-2025-11-25
- Model Context Protocol · mcp-spec-2025-11-25
- Model Context Protocol · mcp-vs-a2a-2607-23884
- Model Context Protocol · mcp-vs-a2a-2607-23884
tech_readme · 1
- Model Context Protocol
tech_science_source · 3
- Model Context Protocol · mcp-architecture-2024-11
- Model Context Protocol · mcp-spec-2025-11-25
- Model Context Protocol · mcp-vs-a2a-2607-23884
tech_section · 11
- Model Context Protocol · Document management map
- Model Context Protocol · Evidence
- Model Context Protocol · Features map
- Model Context Protocol · GitHub map
- Model Context Protocol · How it works
- Model Context Protocol · Limits & failure modes
- Model Context Protocol · Links
- Model Context Protocol · Scientific notes
- … +3 more