66447d5d2c
We started working with MCP in Codex before
https://crates.io/crates/rmcp was mature, so we had our own crate for
MCP types that was generated from the MCP schema:
8b95d3e082/codex-rs/mcp-types/README.md
Now that `rmcp` is more mature, it makes more sense to use their MCP
types in Rust, as they handle details (like the `_meta` field) that our
custom version ignored. Though one advantage that our custom types had
is that our generated types implemented `JsonSchema` and `ts_rs::TS`,
whereas the types in `rmcp` do not. As such, part of the work of this PR
is leveraging the adapters between `rmcp` types and the serializable
types that are API for us (app server and MCP) introduced in #10356.
Note this PR results in a number of changes to
`codex-rs/app-server-protocol/schema`, which merit special attention
during review. We must ensure that these changes are still
backwards-compatible, which is possible because we have:
```diff
- export type CallToolResult = { content: Array<ContentBlock>, isError?: boolean, structuredContent?: JsonValue, };
+ export type CallToolResult = { content: Array<JsonValue>, structuredContent?: JsonValue, isError?: boolean, _meta?: JsonValue, };
```
so `ContentBlock` has been replaced with the more general `JsonValue`.
Note that `ContentBlock` was defined as:
```typescript
export type ContentBlock = TextContent | ImageContent | AudioContent | ResourceLink | EmbeddedResource;
```
so the deletion of those individual variants should not be a cause of
great concern.
Similarly, we have the following change in
`codex-rs/app-server-protocol/schema/typescript/Tool.ts`:
```
- export type Tool = { annotations?: ToolAnnotations, description?: string, inputSchema: ToolInputSchema, name: string, outputSchema?: ToolOutputSchema, title?: string, };
+ export type Tool = { name: string, title?: string, description?: string, inputSchema: JsonValue, outputSchema?: JsonValue, annotations?: JsonValue, icons?: Array<JsonValue>, _meta?: JsonValue, };
```
so:
- `annotations?: ToolAnnotations` ➡️ `JsonValue`
- `inputSchema: ToolInputSchema` ➡️ `JsonValue`
- `outputSchema?: ToolOutputSchema` ➡️ `JsonValue`
and two new fields: `icons?: Array<JsonValue>, _meta?: JsonValue`
---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/10349).
* #10357
* __->__ #10349
* #10356
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70 lines
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[package]
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name = "codex-app-server"
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version.workspace = true
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edition.workspace = true
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license.workspace = true
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[[bin]]
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name = "codex-app-server"
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path = "src/main.rs"
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[lib]
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name = "codex_app_server"
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path = "src/lib.rs"
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[lints]
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workspace = true
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[dependencies]
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anyhow = { workspace = true }
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async-trait = { workspace = true }
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codex-arg0 = { workspace = true }
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codex-cloud-requirements = { workspace = true }
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codex-common = { workspace = true, features = ["cli"] }
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codex-core = { workspace = true }
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codex-backend-client = { workspace = true }
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codex-file-search = { workspace = true }
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codex-chatgpt = { workspace = true }
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codex-login = { workspace = true }
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codex-protocol = { workspace = true }
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codex-app-server-protocol = { workspace = true }
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codex-feedback = { workspace = true }
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codex-rmcp-client = { workspace = true }
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codex-utils-absolute-path = { workspace = true }
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codex-utils-json-to-toml = { workspace = true }
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chrono = { workspace = true }
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serde = { workspace = true, features = ["derive"] }
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serde_json = { workspace = true }
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tempfile = { workspace = true }
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time = { workspace = true }
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toml = { workspace = true }
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tokio = { workspace = true, features = [
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"io-std",
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"macros",
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"process",
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"rt-multi-thread",
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"signal",
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] }
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tracing = { workspace = true, features = ["log"] }
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tracing-subscriber = { workspace = true, features = ["env-filter", "fmt"] }
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uuid = { workspace = true, features = ["serde", "v7"] }
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[dev-dependencies]
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app_test_support = { workspace = true }
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axum = { workspace = true, default-features = false, features = [
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"http1",
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"json",
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"tokio",
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] }
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base64 = { workspace = true }
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codex-execpolicy = { workspace = true }
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core_test_support = { workspace = true }
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os_info = { workspace = true }
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pretty_assertions = { workspace = true }
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rmcp = { workspace = true, default-features = false, features = [
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"server",
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"transport-streamable-http-server",
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] }
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serial_test = { workspace = true }
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wiremock = { workspace = true }
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shlex = { workspace = true }
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