Lifecycle changedspecification/2024-11-05/basic/lifecycle
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Upstream edited this page at 20 Oct 2026 20:02 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 22 Oct 2026 20:37 UTC.
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107107```
108108
109109* The client **SHOULD NOT** send requests other than
110 [pings](/specification/2024-11-05/basic/utilities/ping) before the server
110 [pings](/specification/2024-11-05/basic/utilities/ping.md) before the server
111111 has responded to the `initialize` request.
112112* The server **SHOULD NOT** send requests other than
113 [pings](/specification/2024-11-05/basic/utilities/ping) and
114 [logging](/specification/2024-11-05/server/utilities/logging) before
113 [pings](/specification/2024-11-05/basic/utilities/ping.md) and
114 [logging](/specification/2024-11-05/server/utilities/logging.md) before
115115 receiving the `initialized` notification.
116116
117117#### Version Negotiation
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135135
136136| Category | Capability | Description |
137137| - | - | - |
138| Client | `roots` | Ability to provide filesystem [roots](/specification/2024-11-05/client/roots) |
139| Client | `sampling` | Support for LLM [sampling](/specification/2024-11-05/client/sampling) requests |
138| Client | `roots` | Ability to provide filesystem [roots](/specification/2024-11-05/client/roots.md) |
139| Client | `sampling` | Support for LLM [sampling](/specification/2024-11-05/client/sampling.md) requests |
140140| Client | `experimental` | Describes support for non-standard experimental features |
141| Server | `prompts` | Offers [prompt templates](/specification/2024-11-05/server/prompts) |
142| Server | `resources` | Provides readable [resources](/specification/2024-11-05/server/resources) |
143| Server | `tools` | Exposes callable [tools](/specification/2024-11-05/server/tools) |
144| Server | `logging` | Emits structured [log messages](/specification/2024-11-05/server/utilities/logging) |
141| Server | `prompts` | Offers [prompt templates](/specification/2024-11-05/server/prompts.md) |
142| Server | `resources` | Provides readable [resources](/specification/2024-11-05/server/resources.md) |
143| Server | `tools` | Exposes callable [tools](/specification/2024-11-05/server/tools.md) |
144| Server | `logging` | Emits structured [log messages](/specification/2024-11-05/server/utilities/logging.md) |
145145| Server | `experimental` | Describes support for non-standard experimental features |
146146
147147Capability objects can describe sub-capabilities like:
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168168
169169#### stdio
170170
171For the stdio [transport](/specification/2024-11-05/basic/transports), the
171For the stdio [transport](/specification/2024-11-05/basic/transports.md), the
172172client **SHOULD** initiate shutdown by:
173173
1741741. First, closing the input stream to the child process (the server)
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181181
182182#### HTTP
183183
184For HTTP [transports](/specification/2024-11-05/basic/transports), shutdown
184For HTTP [transports](/specification/2024-11-05/basic/transports.md), shutdown
185185is indicated by closing the associated HTTP connection(s).
186186
187187## Error Handling
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