From 30ff510e381531b0e53840b75dbc1fa2e42d147b Mon Sep 17 00:00:00 2001 From: Will Eaton Date: Fri, 9 Oct 2026 09:59:50 -0400 Subject: [PATCH] Run Pi 1.1.0 with its built-in MCP client and codemode Seed Pi's own mcp.json instead of loading the never-installed pi-mcp-adapter, and close the turn on agent_settled, since agent_end now precedes retries. --- crucible-harness/src/pi_json.rs | 236 ++++++++++++++++-- .../src/testdata/pi_json_codemode.jsonl | 30 +++ .../src/testdata/pi_json_hello.jsonl | 67 +++-- crucible/src/agent/harness/pi.rs | 65 +++-- images/features/pi/feature.toml | 2 +- 5 files changed, 311 insertions(+), 89 deletions(-) create mode 100644 crucible-harness/src/testdata/pi_json_codemode.jsonl diff --git a/crucible-harness/src/pi_json.rs b/crucible-harness/src/pi_json.rs index ece24867..6a708b5d 100644 --- a/crucible-harness/src/pi_json.rs +++ b/crucible-harness/src/pi_json.rs @@ -5,8 +5,9 @@ //! `tool_execution_start`/`tool_execution_end`, `turn_end`, `agent_end`). Every model request is //! one assistant message whose `message_end` carries the authoritative content blocks and that //! request's usage, so text, thinking, and token samples come from `message_end`; tool events come -//! from `tool_execution_end`, which carries the result and the error flag; and the terminal -//! `agent_end` closes the turn as a [`AgentEvent::Result`]. Pi prices usage from its own model +//! from `tool_execution_end`, which carries the result and the error flag. `agent_end` only closes +//! one low-level run (an automatic retry or overflow recovery can follow it), so the terminal +//! `agent_settled` closes the turn as a [`AgentEvent::Result`]. Pi prices usage from its own model //! table, which is zero for a custom provider, so a zero total falls back to the pricing function //! the owner installs. Lines with an unmodeled `type`, and non-JSON lines, pass through as //! [`AgentEvent::Raw`] so a viewer never loses output to schema drift. @@ -102,34 +103,62 @@ impl PiJsonParser { } } Some("tool_execution_end") => self.tool_end(&msg, &mut out), - Some("agent_end") => out.push(AgentEvent::Result { - subtype: if self.error.is_some() { - "error" - } else { - "success" + Some("auto_retry_end") => { + if msg.get("success").and_then(Value::as_bool) == Some(true) { + self.error = None; + } else if self.error.is_none() { + let detail = str_field(&msg, "finalError"); + self.error = Some(if detail.is_empty() { + "automatic retry failed".to_string() + } else { + detail + }); } - .to_string(), - is_error: self.error.is_some(), - turns: self.messages, - cost_usd: self.cost(), - error: self.error.clone(), - }), + } + Some("compaction_end") => { + if msg.get("willRetry").and_then(Value::as_bool) == Some(true) { + self.error = None; + } + } + Some("agent_settled") => { + if msg.get("aborted").and_then(Value::as_bool) == Some(true) && self.error.is_none() + { + self.error = Some("aborted".to_string()); + } + out.push(self.result()); + } Some( "agent_start" + | "agent_end" | "turn_start" | "turn_end" | "message_start" | "message_update" | "tool_execution_update" | "queue_update" - | "compaction_start" - | "compaction_end", + | "compaction_start", ) => {} _ => out.push(raw(line)), } out } + /// The turn's terminal event: an error when one stayed latched through the last retry. + fn result(&self) -> AgentEvent { + AgentEvent::Result { + subtype: if self.error.is_some() { + "error" + } else { + "success" + } + .to_string(), + is_error: self.error.is_some(), + turns: self.messages, + cost_usd: self.cost(), + error: self.error.clone(), + } + } + /// One completed assistant message: its blocks in order, then this request's usage folded /// into the turn totals as a token sample. An `error`/`aborted` stop is latched as the turn's /// error. @@ -275,7 +304,7 @@ fn raw(line: &str) -> AgentEvent { #[cfg(test)] mod tests { - use super::*; + use crate::pi_json::*; /// Pricing stand-in: $1/MTok in, $10/MTok out, cached reads a tenth of input. fn price(_model: &str, t: &Tokens) -> f64 { @@ -408,7 +437,8 @@ mod tests { &[ r#"{"type":"message_end","message":{"role":"assistant","content":[],"usage":{"input":100,"output":10,"cacheRead":0,"cacheWrite":0,"cost":{"total":0}},"stopReason":"toolUse"}}"#, r#"{"type":"message_end","message":{"role":"assistant","content":[],"usage":{"input":200,"output":20,"cacheRead":0,"cacheWrite":0,"cost":{"total":0.5}},"stopReason":"stop"}}"#, - r#"{"type":"agent_end","messages":[]}"#, + r#"{"type":"agent_end","messages":[],"willRetry":false}"#, + r#"{"type":"agent_settled","aborted":false}"#, ], ); match &ev[..] { @@ -444,7 +474,8 @@ mod tests { fn an_error_stop_makes_the_result_an_error() { let ev = run(&[ r#"{"type":"message_end","message":{"role":"assistant","content":[],"usage":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"cost":{"total":0}},"stopReason":"error","errorMessage":"No API key for provider: anthropic"}}"#, - r#"{"type":"agent_end","messages":[]}"#, + r#"{"type":"agent_end","messages":[],"willRetry":false}"#, + r#"{"type":"agent_settled","aborted":false}"#, ]); match &ev[..] { [ @@ -470,6 +501,107 @@ mod tests { } } + const ERROR_STOP: &str = r#"{"type":"message_end","message":{"role":"assistant","content":[],"usage":{"input":5,"output":0,"cacheRead":0,"cacheWrite":0,"cost":{"total":0}},"stopReason":"error","errorMessage":"529 overloaded"}}"#; + const OK_STOP: &str = r#"{"type":"message_end","message":{"role":"assistant","content":[{"type":"text","text":"done"}],"usage":{"input":5,"output":1,"cacheRead":0,"cacheWrite":0,"cost":{"total":0}},"stopReason":"stop"}}"#; + + fn results(ev: &[AgentEvent]) -> Vec<(bool, Option, u32)> { + ev.iter() + .filter_map(|e| match e { + AgentEvent::Result { + is_error, + error, + turns, + .. + } => Some((*is_error, error.clone(), *turns)), + _ => None, + }) + .collect() + } + + /// `agent_end` closes one low-level run, which an automatic retry follows; only + /// `agent_settled` closes the turn, and a retry that succeeds clears the failed attempt's error. + #[test] + fn a_successful_retry_settles_once_as_success() { + let ev = run(&[ + ERROR_STOP, + r#"{"type":"agent_end","messages":[],"willRetry":false}"#, + r#"{"type":"auto_retry_start","attempt":1,"maxAttempts":3,"delayMs":2000,"errorMessage":"529 overloaded"}"#, + r#"{"type":"agent_start"}"#, + OK_STOP, + r#"{"type":"auto_retry_end","success":true,"attempt":2}"#, + r#"{"type":"agent_end","messages":[],"willRetry":false}"#, + r#"{"type":"agent_settled","aborted":false}"#, + ]); + assert_eq!(results(&ev), [(false, None, 2)]); + assert!( + ev.iter().any( + |e| matches!(e, AgentEvent::Error { message, .. } if message == "529 overloaded") + ), + "the failed attempt is still reported as it happened" + ); + } + + #[test] + fn an_exhausted_retry_settles_as_its_final_error() { + let ev = run(&[ + r#"{"type":"auto_retry_end","success":false,"attempt":3,"finalError":"529 overloaded after 3 attempts"}"#, + r#"{"type":"agent_settled","aborted":false}"#, + ]); + assert_eq!( + results(&ev), + [(true, Some("529 overloaded after 3 attempts".to_string()), 0)] + ); + + let ev = run(&[ + r#"{"type":"auto_retry_end","success":false,"attempt":3}"#, + r#"{"type":"agent_settled","aborted":false}"#, + ]); + assert_eq!( + results(&ev), + [(true, Some("automatic retry failed".to_string()), 0)] + ); + } + + /// Overflow recovery: the overflowing request errors, compaction succeeds with + /// `willRetry`, and the retried prompt finishes. + #[test] + fn overflow_recovery_clears_the_overflow_error() { + let ev = run(&[ + ERROR_STOP, + r#"{"type":"agent_end","messages":[],"willRetry":true}"#, + r#"{"type":"compaction_start","reason":"overflow"}"#, + r#"{"type":"compaction_end","reason":"overflow","result":{},"aborted":false,"willRetry":true}"#, + OK_STOP, + r#"{"type":"agent_settled","aborted":false}"#, + ]); + assert_eq!(results(&ev), [(false, None, 2)]); + + let ev = run(&[ + ERROR_STOP, + r#"{"type":"compaction_end","reason":"overflow","aborted":false,"willRetry":false,"errorMessage":"too big"}"#, + r#"{"type":"agent_settled","aborted":false}"#, + ]); + assert_eq!( + results(&ev), + [(true, Some("529 overloaded".to_string()), 1)] + ); + } + + #[test] + fn an_aborted_settle_is_an_error() { + let ev = run(&[OK_STOP, r#"{"type":"agent_settled","aborted":true}"#]); + assert_eq!(results(&ev), [(true, Some("aborted".to_string()), 1)]); + } + + #[test] + fn agent_end_alone_does_not_close_the_turn() { + let ev = run(&[ + OK_STOP, + r#"{"type":"agent_end","messages":[],"willRetry":false}"#, + ]); + assert!(results(&ev).is_empty(), "{ev:?}"); + } + #[test] fn unknown_types_and_non_json_pass_through_as_raw() { let ev = run(&[ @@ -495,8 +627,8 @@ mod tests { } } - /// Golden test against a real `pi --mode json --print` capture (paths redacted) against a - /// scripted chat-completions endpoint: `echo hi` through bash, `hello.txt` through write, then + /// Golden test against a real pi 1.1.0 `--mode json --print` capture (paths redacted) against + /// a scripted chat-completions endpoint: `echo hi` through bash, `hello.txt` through write, then /// the closing sentence. #[test] fn golden_hello_capture() { @@ -549,4 +681,68 @@ mod tests { other => panic!("unexpected event sequence from the capture: {other:?}"), } } + + /// Golden test against a real pi 1.1.0 capture with `--tools +codemode` and one streamable-HTTP + /// MCP server behind a bearer, against a scripted chat-completions endpoint: a codemode script + /// calls `mcp__vuln__lookup`, then the closing sentence. The nested MCP call finishes inside + /// the script, so its tool event lands before the codemode tool's own. + #[test] + fn golden_codemode_mcp_capture() { + let fixture = include_str!("testdata/pi_json_codemode.jsonl"); + let ev = run_with( + PiJsonParser::new("qwen-3-8-27b").with_tool_io(true), + &fixture.lines().collect::>(), + ); + match &ev[..] { + [ + AgentEvent::Init { .. }, + AgentEvent::Tokens(t1), + AgentEvent::Tool { + name: nested, + result: nested_result, + .. + }, + AgentEvent::Tool { + name: script, + input: script_input, + result: script_result, + .. + }, + AgentEvent::Text { delta }, + AgentEvent::Tokens(t2), + AgentEvent::Result { + is_error, turns, .. + }, + ] => { + assert_eq!((t1.input, t1.output), (100, 10)); + assert_eq!(nested, "mcp__vuln__lookup"); + assert_eq!( + nested_result.as_deref(), + Some("CVE-2026-0001: golang.org/x/net < 0.38.0") + ); + assert_eq!(script, "codemode"); + assert!( + script_input.as_ref().is_some_and(|i| i["code"] + .as_str() + .is_some_and(|c| c.contains("tools.mcp__vuln__lookup"))), + "{script_input:?}" + ); + assert!( + script_result + .as_deref() + .is_some_and(|r| r.starts_with("Script completed") + && r.contains("golang.org/x/net < 0.38.0")), + "{script_result:?}" + ); + assert_eq!( + delta, + "CVE-2026-0001 affects golang.org/x/net below 0.38.0." + ); + assert_eq!((t2.input, t2.output, t2.total), (300, 30, 330)); + assert!(!*is_error); + assert_eq!(*turns, 2); + } + other => panic!("unexpected event sequence from the capture: {other:?}"), + } + } } diff --git a/crucible-harness/src/testdata/pi_json_codemode.jsonl b/crucible-harness/src/testdata/pi_json_codemode.jsonl new file mode 100644 index 00000000..deea5d7f --- /dev/null +++ b/crucible-harness/src/testdata/pi_json_codemode.jsonl @@ -0,0 +1,30 @@ +{"type":"session","version":3,"id":"01a120dd-c51b-70b5-93cc-cd383821c286","timestamp":"2026-10-09T13:32:47.260Z","cwd":"/sandbox/workspace"} +{"type":"agent_start"} +{"type":"turn_start"} +{"type":"message_start","message":{"role":"system","content":"","sections":{"preamble":"You are an expert coding assistant operating inside pi, a coding agent harness. You help users by reading files, executing commands, editing code, and writing new files.","tools":"\n- read: Read file contents\n- bash: Execute bash commands (ls, grep, find, etc.)\n- edit: Make precise file edits with exact text replacement, including multiple disjoint edits in one call\n- write: Create or overwrite files\n- codemode: Run JavaScript that calls other tools\n\nIn addition to the tools above, you may have access to other custom tools depending on the project.\n","rules":"\n- Use bash for file operations like ls, rg, find\n- Use read to examine files instead of cat or sed.\n- You can inspect PI_* environment variables for current model and session details.\n- Use edit for precise changes (edits[].oldText must match exactly)\n- When changing multiple separate locations in one file, use one edit call with multiple entries in edits[] instead of multiple edit calls\n- Each edits[].oldText is matched against the original file, not after earlier edits are applied. Do not emit overlapping or nested edits. Merge nearby changes into one edit.\n- Keep edits[].oldText as small as possible while still being unique in the file. Do not pad with large unchanged regions.\n- Use write only for new files or complete rewrites.\n- Use codemode to batch independent tool calls (Promise.allSettled), chain them, or filter large output, instead of many separate calls.\n- Be concise in your responses\n- Show file paths clearly when working with files\n","docs":"\nPi documentation (read only when the user asks about pi itself, its SDK, extensions, themes, skills, or TUI):\n- Main documentation: /usr/local/lib/node_modules/@earendil-works/pi-coding-agent/README.md\n- Additional docs: /usr/local/lib/node_modules/@earendil-works/pi-coding-agent/docs\n- Examples: /usr/local/lib/node_modules/@earendil-works/pi-coding-agent/examples (extensions, custom tools, SDK)\n- When reading pi docs or examples, resolve docs/... under Additional docs and examples/... under Examples, not the current working directory\n- When asked about: extensions (docs/extensions.md, examples/extensions/), themes (docs/themes.md), skills (docs/skills.md), prompt templates (docs/prompt-templates.md), TUI components (docs/tui.md), keybindings (docs/keybindings.md), SDK integrations (docs/sdk.md), custom providers (docs/custom-provider.md), adding models (docs/models.md), pi packages (docs/packages.md), environment variables (docs/environment-variables.md), MCP servers (docs/mcp.md), codemode scripts and non-LLM models such as classifiers and image models (docs/codemode.md)\n- When working on pi topics, read the docs and examples, and follow .md cross-references before implementing\n- Always read pi .md files completely and follow links to related docs (e.g., tui.md for TUI API details)\n","cwd":"\n/sandbox/workspace\n","mcp_servers":"\nMCP servers whose tools are not declared to you. Call the tools of `codemode` servers from codemode scripts.\n- mcp__vuln (codemode)\n"},"timestamp":1791552767327,"toolsAdded":[{"name":"read","description":"Read the contents of a file. Supports text files and images (jpg, png, gif, webp, bmp). Images are sent as attachments. For text files, output is truncated to 2000 lines or 50KB (whichever is hit first). Use offset/limit for large files. When you need the full file, continue with offset until complete.\n\nCodemode: `tools.read(args)` resolves to `string | { data: string; mimeType: string; note: string; type: \"image\"; }`.","parameters":{"type":"object","required":["path"],"properties":{"path":{"type":"string","description":"Path to the file to read (relative or absolute)"},"offset":{"type":"number","description":"Line number to start reading from (1-indexed)"},"limit":{"type":"number","description":"Maximum number of lines to read"}}},"constrainedSampling":{"type":"json_schema","strict":"prefer"}},{"name":"bash","description":"Execute a bash command in the current working directory. Returns stdout and stderr. Output is truncated to last 2000 lines or 50KB (whichever is hit first). If truncated, full output is saved to a temp file. Optionally provide a timeout in seconds.\n\nCodemode: `tools.bash(args)` resolves to `{ output, truncated, full_output_path?, exit_code, wall_time_seconds }`.","parameters":{"type":"object","required":["command"],"properties":{"command":{"type":"string","description":"Shell command to execute"},"timeout":{"type":"number","description":"Timeout in seconds (optional, no default timeout)"}}},"constrainedSampling":{"type":"json_schema","strict":"prefer"}},{"name":"edit","description":"Edit a single file using exact text replacement. Every edits[].oldText must match a unique, non-overlapping region of the original file. If two changes affect the same block or nearby lines, merge them into one edit instead of emitting overlapping edits. Do not include large unchanged regions just to connect distant changes.\n\nCodemode: `tools.edit(args)` resolves to a string.","parameters":{"type":"object","required":["path","edits"],"properties":{"path":{"type":"string","description":"Path to the file to edit (relative or absolute)"},"edits":{"type":"array","items":{"type":"object","required":["oldText","newText"],"properties":{"oldText":{"type":"string","description":"Exact text for one targeted replacement. It must be unique in the original file and must not overlap with any other edits[].oldText in the same call."},"newText":{"type":"string","description":"Replacement text for this targeted edit."}}},"description":"One or more targeted replacements. Each edit is matched against the original file, not incrementally. Do not include overlapping or nested edits. If two changes touch the same block or nearby lines, merge them into one edit instead."}}},"constrainedSampling":{"type":"json_schema","strict":"prefer"}},{"name":"write","description":"Write content to a file. Creates the file if it doesn't exist, overwrites if it does. Automatically creates parent directories.\n\nCodemode: `tools.write(args)` resolves to a string.","parameters":{"type":"object","required":["path","content"],"properties":{"path":{"type":"string","description":"Path to the file to write (relative or absolute)"},"content":{"type":"string","description":"Content to write to the file"}}},"constrainedSampling":{"type":"json_schema","strict":"prefer"}},{"name":"codemode","description":"Run JavaScript that calls other tools. The input is raw JavaScript (not JSON, no code fence), run as an async function body in a QuickJS sandbox: top-level `await` and `return` work. No Node, file system, network, or timers.\n- `await tools.({ ...args })` resolves to a string, or an object if the tool's declaration says so, and rejects with an Error on failure. Calls still running when the script ends are cancelled.\n- Optional first line: `// @options: {\"max_output_tokens\": 10000, \"timeout_ms\": 60000}`\n\nGlobals:\n- `text(value)`, `image(dataUrlOrImageBlock)`, `console.log(...)`, and top-level `return` add output; `exit()` ends the script. With several text items, each starts with a `==> text N/M <==` line, and `console` lines follow the other output in one `` block. `image()` also saves the image to a temp file and the result names its path.\n- `store(key, value)` and `load(key)` keep JSON values across codemode calls.\n- `ALL_TOOLS`, `await searchTools(query, { limit?, namespace? })`, `await describeTool(name)`, `await describeNamespace(name)`: find unlisted tools, such as MCP tools.\n- `models`: classifiers and image generation. Read /usr/local/lib/node_modules/@earendil-works/pi-coding-agent/docs/codemode.md first.","parameters":{"type":"object","required":["code"],"properties":{"code":{"type":"string","description":"Raw JavaScript source."}}},"constrainedSampling":{"type":"grammar","variants":{"openai_lark":"\nstart: options_source | plain_source\noptions_source: OPTIONS_LINE NEWLINE SOURCE\nplain_source: SOURCE\n\nOPTIONS_LINE: /[ \\t]*\\/\\/ @options:[^\\r\\n]*/\nNEWLINE: /\\r?\\n/\nSOURCE: /[\\s\\S]+/\n"}}}]}} +{"type":"message_end","message":{"role":"system","content":"","sections":{"preamble":"You are an expert coding assistant operating inside pi, a coding agent harness. You help users by reading files, executing commands, editing code, and writing new files.","tools":"\n- read: Read file contents\n- bash: Execute bash commands (ls, grep, find, etc.)\n- edit: Make precise file edits with exact text replacement, including multiple disjoint edits in one call\n- write: Create or overwrite files\n- codemode: Run JavaScript that calls other tools\n\nIn addition to the tools above, you may have access to other custom tools depending on the project.\n","rules":"\n- Use bash for file operations like ls, rg, find\n- Use read to examine files instead of cat or sed.\n- You can inspect PI_* environment variables for current model and session details.\n- Use edit for precise changes (edits[].oldText must match exactly)\n- When changing multiple separate locations in one file, use one edit call with multiple entries in edits[] instead of multiple edit calls\n- Each edits[].oldText is matched against the original file, not after earlier edits are applied. Do not emit overlapping or nested edits. Merge nearby changes into one edit.\n- Keep edits[].oldText as small as possible while still being unique in the file. Do not pad with large unchanged regions.\n- Use write only for new files or complete rewrites.\n- Use codemode to batch independent tool calls (Promise.allSettled), chain them, or filter large output, instead of many separate calls.\n- Be concise in your responses\n- Show file paths clearly when working with files\n","docs":"\nPi documentation (read only when the user asks about pi itself, its SDK, extensions, themes, skills, or TUI):\n- Main documentation: /usr/local/lib/node_modules/@earendil-works/pi-coding-agent/README.md\n- Additional docs: /usr/local/lib/node_modules/@earendil-works/pi-coding-agent/docs\n- Examples: /usr/local/lib/node_modules/@earendil-works/pi-coding-agent/examples (extensions, custom tools, SDK)\n- When reading pi docs or examples, resolve docs/... under Additional docs and examples/... under Examples, not the current working directory\n- When asked about: extensions (docs/extensions.md, examples/extensions/), themes (docs/themes.md), skills (docs/skills.md), prompt templates (docs/prompt-templates.md), TUI components (docs/tui.md), keybindings (docs/keybindings.md), SDK integrations (docs/sdk.md), custom providers (docs/custom-provider.md), adding models (docs/models.md), pi packages (docs/packages.md), environment variables (docs/environment-variables.md), MCP servers (docs/mcp.md), codemode scripts and non-LLM models such as classifiers and image models (docs/codemode.md)\n- When working on pi topics, read the docs and examples, and follow .md cross-references before implementing\n- Always read pi .md files completely and follow links to related docs (e.g., tui.md for TUI API details)\n","cwd":"\n/sandbox/workspace\n","mcp_servers":"\nMCP servers whose tools are not declared to you. Call the tools of `codemode` servers from codemode scripts.\n- mcp__vuln (codemode)\n"},"timestamp":1791552767327,"toolsAdded":[{"name":"read","description":"Read the contents of a file. Supports text files and images (jpg, png, gif, webp, bmp). Images are sent as attachments. For text files, output is truncated to 2000 lines or 50KB (whichever is hit first). Use offset/limit for large files. When you need the full file, continue with offset until complete.\n\nCodemode: `tools.read(args)` resolves to `string | { data: string; mimeType: string; note: string; type: \"image\"; }`.","parameters":{"type":"object","required":["path"],"properties":{"path":{"type":"string","description":"Path to the file to read (relative or absolute)"},"offset":{"type":"number","description":"Line number to start reading from (1-indexed)"},"limit":{"type":"number","description":"Maximum number of lines to read"}}},"constrainedSampling":{"type":"json_schema","strict":"prefer"}},{"name":"bash","description":"Execute a bash command in the current working directory. Returns stdout and stderr. Output is truncated to last 2000 lines or 50KB (whichever is hit first). If truncated, full output is saved to a temp file. Optionally provide a timeout in seconds.\n\nCodemode: `tools.bash(args)` resolves to `{ output, truncated, full_output_path?, exit_code, wall_time_seconds }`.","parameters":{"type":"object","required":["command"],"properties":{"command":{"type":"string","description":"Shell command to execute"},"timeout":{"type":"number","description":"Timeout in seconds (optional, no default timeout)"}}},"constrainedSampling":{"type":"json_schema","strict":"prefer"}},{"name":"edit","description":"Edit a single file using exact text replacement. Every edits[].oldText must match a unique, non-overlapping region of the original file. If two changes affect the same block or nearby lines, merge them into one edit instead of emitting overlapping edits. Do not include large unchanged regions just to connect distant changes.\n\nCodemode: `tools.edit(args)` resolves to a string.","parameters":{"type":"object","required":["path","edits"],"properties":{"path":{"type":"string","description":"Path to the file to edit (relative or absolute)"},"edits":{"type":"array","items":{"type":"object","required":["oldText","newText"],"properties":{"oldText":{"type":"string","description":"Exact text for one targeted replacement. It must be unique in the original file and must not overlap with any other edits[].oldText in the same call."},"newText":{"type":"string","description":"Replacement text for this targeted edit."}}},"description":"One or more targeted replacements. Each edit is matched against the original file, not incrementally. Do not include overlapping or nested edits. 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Reply with one short sentence when done."}],"timestamp":1789420074649}} -{"type":"message_end","message":{"role":"user","content":[{"type":"text","text":"Run the shell command `echo hi` and then create a file named hello.txt containing the single word hello. 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"}],"api":"openai-completions","provider":"crucible","model":"qwen-3-8-27b","usage":{"input":300,"output":30,"cacheRead":0,"cacheWrite":0,"reasoning":0,"totalTokens":330,"cost":{"input":0,"output":0,"cacheRead":0,"cacheWrite":0,"total":0}},"stopReason":"stop","timestamp":1791552766364,"responseId":"chatcmpl-rig","rawStopReason":"stop","durationMs":4,"thinkingLevel":"off"}],"willRetry":false} +{"type":"agent_settled","aborted":false} diff --git a/crucible/src/agent/harness/pi.rs b/crucible/src/agent/harness/pi.rs index 997a8c23..f14d5d6c 100644 --- a/crucible/src/agent/harness/pi.rs +++ b/crucible/src/agent/harness/pi.rs @@ -15,10 +15,9 @@ //! with a `fetch` that rewrites each request into Vertex's `rawPredict` shape and signs it with //! the token the metadata emulator serves. //! -//! Pi has no MCP client of its own; the sandbox image carries the `pi-mcp-adapter` extension, -//! which the turn loads by path when it reaches an MCP server ([`MCP_ADAPTER`]) and points at the -//! turn's servers through a seeded `mcp.json` ([`MCP_CONFIG`]). The agent sees one proxy `mcp` -//! tool that discovers and calls their tools on demand. +//! The turn's MCP servers ride Pi's built-in client through a seeded `mcp.json` +//! ([`MCP_CONFIG`]). Their tools keep Pi's default `codemode` exposure: the agent reaches them +//! from `codemode` scripts, which the turn enables explicitly whenever a server is in scope. use crate::agent::harness::{ ApiEndpoint, AuthProvider, Backend, CRUCIBLE_PROVIDER_ID, HarnessSpec, McpServer, SandboxAuth, @@ -117,20 +116,13 @@ fn heredoc_delimiter(prompt: &str) -> String { /// Where the Vertex extension is seeded: pi loads every extension under its agent dir. pub(crate) const VERTEX_EXTENSION: &str = "/sandbox/.pi/agent/extensions/crucible-vertex.ts"; -/// The MCP adapter extension's entry, where the sandbox image's global npm install puts it. -/// Loaded with `-e` only when the turn reaches a server, so any other turn carries no `mcp` tool. -pub(crate) const MCP_ADAPTER: &str = "/usr/local/lib/node_modules/pi-mcp-adapter/index.ts"; - -/// The adapter's Pi-owned config under the relocated agent dir: one remote server per server in -/// the turn's scope, each bearer in a header (the token, or the provider placeholder the egress -/// proxy resolves). +/// Pi's user-level MCP config under the relocated agent dir: one streamable-HTTP server per +/// server in the turn's scope, each bearer in a header (the token, or the provider placeholder +/// the egress proxy resolves). pub(crate) const MCP_CONFIG: &str = "/sandbox/.pi/agent/mcp.json"; fn mcp_json(servers: &[McpServer<'_>]) -> String { - let servers = json_servers( - servers, - |s| json!({ "url": s.url, "protocolVersion": "auto" }), - ); + let servers = json_servers(servers, |s| json!({ "url": s.url })); json!({ "mcpServers": servers }).to_string() } @@ -283,13 +275,14 @@ impl Backend for Pi { } /// No message positional: `--print` reads a piped stdin as the prompt, which the shared exec - /// wrapper redirects from the uploaded prompt file. With an MCP server in scope, the adapter - /// is loaded by path; it reads the seeded [`MCP_CONFIG`] itself. + /// wrapper redirects from the uploaded prompt file. With an MCP server in scope, `codemode` + /// is added to the default tools up front, so the first request declares it whether or not + /// the servers in [`MCP_CONFIG`] have connected yet. fn sandbox_argv(&self, args: &Args, mcp_seeded: bool) -> Vec { let mut a = Self::base_args(args); if mcp_seeded { - a.push("-e".to_string()); - a.push(MCP_ADAPTER.to_string()); + a.push("--tools".to_string()); + a.push("+codemode".to_string()); } a } @@ -308,7 +301,7 @@ impl Backend for Pi { ) } - /// The turn's servers as the adapter's remote servers. + /// The turn's servers as Pi's remote MCP servers. fn mcp_config(&self, servers: &[McpServer<'_>]) -> Option { Some(SeedFile { content: mcp_json(servers), @@ -516,7 +509,7 @@ fn session_records(content: &[u8]) -> Vec { #[cfg(test)] mod tests { - use super::*; + use crate::agent::harness::pi::*; use crate::agent::harness::{SandboxAuth, SeedFile}; use clap::Parser; @@ -571,13 +564,13 @@ mod tests { assert_eq!( sandbox.len(), PREFIX.len() + 1, - "no message positional: stdin carries it; no server, no adapter" + "no message positional: stdin carries it; no server, no codemode" ); - // With a server in scope, the MCP adapter is loaded by its image path. + // With a server in scope, codemode joins the default tools. let with_mcp = Pi.sandbox_argv(&a, true); assert_eq!(&with_mcp[..sandbox.len()], &sandbox[..]); - assert_eq!(&with_mcp[sandbox.len()..], &["-e", MCP_ADAPTER]); + assert_eq!(&with_mcp[sandbox.len()..], &["--tools", "+codemode"]); a.reasoning_effort = Some(ReasoningEffort::Max); let sandbox = Pi.sandbox_argv(&a, false); @@ -645,8 +638,8 @@ mod tests { } /// A custom OpenAI-speaking endpoint becomes the `crucible` provider on the completions API - /// (or responses, per the wire API), keyed off `OPENAI_API_KEY`. The MCP servers ride the - /// adapter's `mcp.json`, never `models.json`. + /// (or responses, per the wire API), keyed off `OPENAI_API_KEY`. The MCP servers ride Pi's + /// `mcp.json`, never `models.json`. #[test] fn models_json_registers_a_custom_endpoint_and_the_servers_ride_mcp_json() { let mut a = args(); @@ -656,7 +649,7 @@ mod tests { &[server("broker", Some("tok")), server("jira", None)], &custom_endpoint(), ); - assert_eq!(seeds.len(), 2, "models.json, then the adapter's mcp.json"); + assert_eq!(seeds.len(), 2, "models.json, then mcp.json"); assert_eq!(seeds[0].dest, CONFIG); let v: Value = serde_json::from_str(&seeds[0].content).expect("valid json"); let p = &v["providers"]["crucible"]; @@ -670,12 +663,18 @@ mod tests { let names: Vec<&String> = m["mcpServers"].as_object().unwrap().keys().collect(); assert_eq!(names, ["broker", "jira"]); let broker = &m["mcpServers"]["broker"]; - assert_eq!(broker["url"], "http://10.0.0.1:8000/mcp"); - assert_eq!(broker["protocolVersion"], "auto"); - assert_eq!(broker["headers"]["Authorization"], "Bearer tok"); - assert_eq!(seeds[1].content.matches("Bearer").count(), 1); - assert_eq!(m["mcpServers"]["jira"]["protocolVersion"], "auto"); - assert!(m["mcpServers"]["jira"].get("headers").is_none()); + assert_eq!( + broker, + &json!({ + "url": "http://10.0.0.1:8000/mcp", + "headers": { "Authorization": "Bearer tok" }, + }), + "exactly the keys Pi's built-in client reads" + ); + assert_eq!( + m["mcpServers"]["jira"], + json!({ "url": "http://10.0.0.1:8000/mcp" }) + ); let responses = InferenceEnv { wire_api: Some(WireApi::Responses), diff --git a/images/features/pi/feature.toml b/images/features/pi/feature.toml index bc00f976..e6f37d8e 100644 --- a/images/features/pi/feature.toml +++ b/images/features/pi/feature.toml @@ -2,7 +2,7 @@ summary = "Pi coding agent CLI" layer = 90 [pins] -pi = "0.85.1" +pi = "1.1.0" [capabilities] "agent.pi" = { pin = "pi" }