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[MCP] Add support for resources (#5239)

Browse Source 
This PR adds support for [MCP
resources](https://modelcontextprotocol.io/specification/2025-06-18/server/resources)
by adding three new tools for the model:
1. `list_resources`
2. `list_resource_templates`
3. `read_resource`

These 3 tools correspond to the [three primary MCP resource protocol
messages](https://modelcontextprotocol.io/specification/2025-06-18/server/resources#protocol-messages).

Example of listing and reading a GitHub resource tempalte
<img width="2984" height="804" alt="CleanShot 2025-10-15 at 17 31 10"
src="https://github.com/user-attachments/assets/89b7f215-2e2a-41c5-90dd-b932ac84a585"
/>

`/mcp` with Figma configured
<img width="2984" height="442" alt="CleanShot 2025-10-15 at 18 29 35"
src="https://github.com/user-attachments/assets/a7578080-2ed2-4c59-b9b4-d8461f90d8ee"
/>

Fixes #4956
This commit is contained in:
Gabriel Peal
2025-10-16 22:05:15 -07:00
committed by GitHub
parent bdda762deb
commit 40fba1bb4c
18 changed files with 1705 additions and 24 deletions
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22
codex-rs/core/tests/suite/model_tools.rs
View File

@@ -94,21 +94,37 @@ async fn model_selects_expected_tools() {
let codex_tools = collect_tool_identifiers_for_model("codex-mini-latest").await;
assert_eq!(
codex_tools,
vec!["local_shell".to_string()],
vec![
"local_shell".to_string(),
"list_mcp_resources".to_string(),
"list_mcp_resource_templates".to_string(),
"read_mcp_resource".to_string()
],
"codex-mini-latest should expose the local shell tool",
);
let o3_tools = collect_tool_identifiers_for_model("o3").await;
assert_eq!(
o3_tools,
vec!["shell".to_string()],
vec![
"shell".to_string(),
"list_mcp_resources".to_string(),
"list_mcp_resource_templates".to_string(),
"read_mcp_resource".to_string()
],
"o3 should expose the generic shell tool",
);
let gpt5_codex_tools = collect_tool_identifiers_for_model("gpt-5-codex").await;
assert_eq!(
gpt5_codex_tools,
vec!["shell".to_string(), "apply_patch".to_string(),],
vec![
"shell".to_string(),
"list_mcp_resources".to_string(),
"list_mcp_resource_templates".to_string(),
"read_mcp_resource".to_string(),
"apply_patch".to_string()
],
"gpt-5-codex should expose the apply_patch tool",
);
}