codeitall

dev.codeitallPublished by codeitall.devOfficial publisherv0.1.0Updated Oct 24, 2026

Behavioral oracle for Rust crate APIs: runtime behavior, yank/advisory, deprecation, sig search

VerifiedStreamable HTTPWeb executableKnowledge & Memory Developer Tools

Server details

Identifier: dev.codeitall/codeitall
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Sep 16, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to codeitall.dev, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

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Overview

AI-generated overview

A hosted, free behavioral oracle for Rust crate APIs, letting an assistant look up runtime behavior, signatures, yank and advisory status, and modern callable.

What you can do: Ask open-ended Rust API questions, routed deterministically with a retrieval fallback for candidates and crates. Search by signature shape to get ranked candidate functions with crate, download and yank status. Look up probe-observed behavior tables for a specific crate and function, row by row with input, outcome and value or error. Compare implementations side by side for a task category such as base64 crates. Find the current canonical alternative to a suspected-deprecated call, with yank and advisory rows.
When to use it: Useful when writing or reviewing Rust code and you need to know what a function actually does at runtime, whether a crate is yanked or carries a RustSec advisory, or which crate is the modern replacement for a deprecated call. It complements documentation rather than replacing general code search.
Requirements: A remote MCP endpoint over streamable HTTP; no local runtime or package install. A free anonymous bearer key is minted from the service's key endpoint, with no email or signup. Network access to the hosted API is required.

Before you install

The key is a bearer credential sent in a header, so keep it private. Queries are sent to a third-party hosted service. Per-IP key issuance and per-key daily quotas apply. The server is read-only lookup; it does not modify your code or crates.

Installation

In SourceWeft

Open codeitall in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/dev.codeitall%2Fcodeitall/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "codeitall": {
      "type": "http",
      "url": "https://api.codeitall.dev/mcp"
    }
  }
}

README

codeitall — Rust API behavioral oracle

Version-pinned behavioral oracle for Rust package APIs, built for AI coding agents. Five deterministic tools backed by a Postgres substrate of 66,549,370 pattern_records and 107 successful probe runs across 7 task families (datetime, duration, base64, JSON strict-vs-permissive, JWT verify, AEAD encrypt/decrypt, constant-time compare).

Hosted, free, no signup: https://api.codeitall.dev

This repository is codeitall's public surface — the API reference, OpenAPI spec, the "For AI Agents" page, and the per-family pages. The ingest/indexer and server source are not redistributed; you consume codeitall by querying the hosted API, not by running it yourself.

What it answers

The differentiator from a docs RAG: the substrate captures runtime behavior (what a function actually does on a canonical input set, observed empirically), not just documentation (what it claims to do). It targets the documentation-vs-runtime gap — yank status, RustSec advisories, deprecation renames, and cross-implementation behavior tables.

Tools

Tool	Use it for
`answer_api_question`	Open-ended Rust API questions; routes deterministically (rule-based, no LLM) and falls back to bge-m3 cosine retrieval.
`signature_search`	You know the signature shape (`fn(&str) -> Result<Vec<u8>, _>`); get ranked candidate functions + crate, downloads, yank status.
`behavior_lookup`	A specific `(crate, fn_name)`; get the probe-observation table verbatim — each row `(input, outcome=ok\|err\|panic, value_or_error)`.
`compare_implementations`	A task category (e.g. "base64 crates"); get the side-by-side cross-implementation behavior table.
`find_modern_equivalent`	A suspected-deprecated call; get the current canonical alternative + yank/advisory rows.

Determinism contract

No generative LLM sits between a request and its response. Every response is SQL + deterministic templating; the only model in the hot path is bge-m3, a deterministic text→vector embedder used for the cosine fallback (same input → same vector → same hits). This is a regression-pinned invariant.

Quickstart

bash

# Mint a free anonymous key (no email, no signup):curl -sX POST https://api.codeitall.dev/v1/keys \  -H 'content-type: application/json' -d '{}'
# Ask a question (HTTP REST):curl -sX POST https://api.codeitall.dev/v1/answer_api_question \  -H 'content-type: application/json' \  -d '{"question":"how do I parse a duration string in rust"}'

# Mint a free anonymous key (no email, no signup):curl -sX POST https://api.codeitall.dev/v1/keys \  -H 'content-type: application/json' -d '{}'
# Ask a question (HTTP REST):curl -sX POST https://api.codeitall.dev/v1/answer_api_question \  -H 'content-type: application/json' \  -d '{"question":"how do I parse a duration string in rust"}'

GET aliases exist for every tool (browse-only clients); signature_search also accepts a shape_b64 (base64url) parameter so URL re-encoding can't mangle type-signature characters.

Access modes

MCP — SSE/HTTP at https://api.codeitall.dev/mcp (Bearer key), or stdio for self-hosters.
HTTP REST — POST/GET /v1/<tool>.
OpenAPI 3.1 — openapi.json (live: https://api.codeitall.dev/openapi.json).

Docs in this repo

for-ai-agents.html — positioning, tool list, key snippet (live: https://api.codeitall.dev/for-ai-agents.html).
api-reference.html / api-reference.md — generated tool reference + scope/coverage.
agents/ — one page per probe family.

Cost & limits

Free. Per-IP key issuance cap (10/day) and per-key quota (10,000/day). No paid tier, no email capture, no signup.

Source: README.md at commit 2edadce

Tools

SourceWeft has not read this server's tools yet.

Version history

v0.1.0LatestSep 16, 2026

Score

75% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts
Declare a license in the repository or the registry entry.