Artificial Intelligence
44 distinct extensions were invented to do this job. Each one is a provider deciding OpenAPI would not carry something and building their own way through. Where a job has many names and few uses each, nobody won — the problem was solved privately, over and over.
44 extensions
1558 occurrences
2 vendor-named
The extensions
| Extension | What it appears to do | Uses | Providers |
|---|---|---|---|
| x-mcp-group | `x-mcp-group` appears on path items. Its value is a list. Used by a single provider across 37 OpenAPI documents. Consistent with artificial intelligence — this is inferred from where the key appears a | 342 | 1 |
| x-agentic-access | `x-agentic-access` appears on operations. Its value is a structured object. Used by 5 providers across 9 OpenAPI documents. Consistent with artificial intelligence — this is inferred from where the ke | 209 | 5 |
| x-mcp-tool | `x-mcp-tool` appears on operations. Its value is a string. Used by 5 providers across 25 OpenAPI documents. Observed values include `true`, `find_artifacts`, `find_related`, `find_company_insights`. C | 166 | 5 |
| x-wistia-mcp-annotations | `x-wistia-mcp-annotations` appears on operations. Its value is a structured object. Used by a single provider across 2 OpenAPI documents. Consistent with artificial intelligence — this is inferred fro | 152 | 1 |
| x-wistia-mcp-tool-name | `x-wistia-mcp-tool-name` appears on operations. Its value is a string. Used by a single provider across 2 OpenAPI documents. Observed values include `publish-channel-episode`, `un-publish-channel-epis | 127 | 1 |
| x-wistia-mcp-description | `x-wistia-mcp-description` appears on operations. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from | 125 | 1 |
| x-customer-user-agent | `x-customer-user-agent` appears on parameter objects. Its value is a structured object. Used by 27 providers across 84 OpenAPI documents. Consistent with artificial intelligence — this is inferred fro | 84 | 27 |
| x-mcp | `x-mcp` appears on operations. Its value is a structured object. Used by 7 providers across 7 OpenAPI documents. Consistent with artificial intelligence — this is inferred from where the key appears a | 82 | 7 |
| x-wistia-mcp-toolsets | `x-wistia-mcp-toolsets` appears on tags. Its value is a string. Used by a single provider across 2 OpenAPI documents. Observed values include `stats`, `sharing`, `media`, `folders`. Consistent with ar | 47 | 1 |
| x-agent-skill | `x-agent-skill` appears on operations. Its value is a string. Used by 2 providers across 9 OpenAPI documents. Observed values include `integrate-provider`, `brief-on-topic`, `state-of-report`, `shortl | 30 | 2 |
| x-agentcash-auth | `x-agentcash-auth` appears in the info block. Its value is a structured object. Used by 2 providers across 27 OpenAPI documents. Consistent with artificial intelligence — this is inferred from where t | 27 | 2 |
| x-tool-description | `x-tool-description` appears on operations. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `Retrieves paginated active deals with filtering by owne | 27 | 1 |
| x-wistia-mcp-ignore | `x-wistia-mcp-ignore` appears on operations. Its value is a boolean flag. Used by a single provider across 2 OpenAPI documents. Consistent with artificial intelligence — this is inferred from where th | 27 | 1 |
| x-wistia-mcp-type | `x-wistia-mcp-type` appears on schema objects and properties. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `boolean`. Consistent with artificial | 12 | 1 |
|
x-ctctmcp-allow
vendor |
`x-ctctmcp-allow` appears on operations. Its value is a boolean flag. Used by a single provider across 1 OpenAPI document. It sits in the `x-ctctmcp-` namespace, so its meaning is defined by ctctmcp t | 11 | 1 |
| x-wistia-mcp-account-gate | `x-wistia-mcp-account-gate` appears on operations. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `can_use_custom_metadata?`. Consistent with artif | 10 | 1 |
| x-agentic-access-schema | `x-agentic-access-schema` appears at the root of the document. Its value is a structured object. Used by 4 providers across 8 OpenAPI documents. Consistent with artificial intelligence — this is infer | 8 | 4 |
| x-mcp-exclude | `x-mcp-exclude` appears on operations. Its value is a boolean flag. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from where the key a | 8 | 1 |
| x-wistia-mcp-properties | `x-wistia-mcp-properties` appears on request bodies and on schema objects and properties. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artific | 8 | 1 |
| x-mcp-instructions | `x-mcp-instructions` appears on operations. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `To create a script, specify the path (e.g., 'f/my_folde | 6 | 1 |
| x-mcp-tool-include-fields | `x-mcp-tool-include-fields` appears on operations. Its value is a list. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from where the k | 5 | 1 |
| x-wistia-mcp-ignore-agent-chat | `x-wistia-mcp-ignore-agent-chat` appears on operations. Its value is a boolean flag. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred fro | 5 | 1 |
| x-customer-user-agent-Param | `x-customer-user-agent-Param` appears on parameter objects. Its value is a structured object. Used by 3 providers across 4 OpenAPI documents. Consistent with artificial intelligence — this is inferred | 4 | 3 |
| x-mcp-description | `x-mcp-description` appears on operations. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from where | 4 | 1 |
| x-mcp-tool-opaque-fields | `x-mcp-tool-opaque-fields` appears on operations. Its value is a list. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from where the ke | 4 | 1 |
| x-moe-mcp | `x-moe-mcp` appears on operations. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from where the key | 4 | 1 |
| x-agentcash-auth-kind | `x-agentcash-auth-kind` appears on security schemes. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `siwx`, `oauth2`. Consistent with artificial in | 3 | 1 |
| x-mcp-server | `x-mcp-server` appears at the root of the document and in the info block. Its value is a structured object. Used by 3 providers across 3 OpenAPI documents. Consistent with artificial intelligence — th | 3 | 3 |
| x-agent-use-cases | `x-agent-use-cases` appears at the root of the document. Its value is a list. Used by a single provider across 2 OpenAPI documents. Consistent with artificial intelligence — this is inferred from wher | 2 | 1 |
| x-mcp-tool-include-query-params | `x-mcp-tool-include-query-params` appears on operations. It is used as a marker with no value. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is in | 2 | 1 |
| x-agents-index | `x-agents-index` appears at the root of the document. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `https://graphadvocate.com/agents/index.json`. | 1 | 1 |
| x-agentworld-signing | `x-agentworld-signing` appears at the root of the document. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inf | 1 | 1 |
| x-atlar-mcp-ignore | `x-atlar-mcp-ignore` appears on schema objects and properties. Its value is a boolean flag. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is infer | 1 | 1 |
| x-block-lottos-agent-default | `x-block-lottos-agent-default` appears at the root of the document. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — thi | 1 | 1 |
|
x-ctctmcp-tool-desc
vendor |
`x-ctctmcp-tool-desc` appears on operations. Its value is a string. Used by a single provider across 1 OpenAPI document. It sits in the `x-ctctmcp-` namespace, so its meaning is defined by ctctmcp too | 1 | 1 |
| x-hilt-agent-commerce | `x-hilt-agent-commerce` appears at the root of the document. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is in | 1 | 1 |
| x-humanmirror-agent-first | `x-humanmirror-agent-first` appears at the root of the document. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this i | 1 | 1 |
| x-humanmirror-agent-manifest | `x-humanmirror-agent-manifest` appears at the root of the document. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `https://humanmirror.fr/.well-kn | 1 | 1 |
| x-inference-time | `x-inference-time` appears on header objects. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from whe | 1 | 1 |
| x-mcp-required-fields | `x-mcp-required-fields` appears on operations. Its value is a list. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from where the key a | 1 | 1 |
| x-mcp-tool-count | `x-mcp-tool-count` appears in the info block. Its value is an integer. Used by a single provider across 1 OpenAPI document. Observed values include `8`. Consistent with artificial intelligence — this | 1 | 1 |
| x-openhandle-mcp | `x-openhandle-mcp` appears at the root of the document. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferre | 1 | 1 |
| x-openpolicyagent-documentation-url | `x-openpolicyagent-documentation-url` appears in the document. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `https://www.openpolicyagent.org/docs | 1 | 1 |
| x-prompt-tokens | `x-prompt-tokens` appears on header objects. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with artificial intelligence — this is inferred from wher | 1 | 1 |