codeitall
Connects Claude to a Postgres-backed behavioral oracle for Rust crate APIs with 66 million probe records across datetime, crypto, encoding, and JWT operations. Exposes five tools: signature search by type shape, behavior lookup for specific functions showing actual input/output tables, cross-implementation comparison tables, deprecation resolution, and routing for general API questions. No LLM generation in responses, just deterministic SQL and bge-m3 embedding retrieval. Useful when you need runtime behavior data instead of documentation claims, or want to see how chrono versus time actually handle the same duration string. Free tier at 10k requests per day, no signup.
- tools
- 5
- transport
- HTTP
- last updated
- May 27, 2026
Tools
5 toolsPublic tool metadata for what this MCP can expose to an agent.
answer_api_questionOpen-ended Rust API questions; routes deterministically (rule-based, no LLM) and falls back to bge-m3 cosine retrieval.
Open-ended Rust API questions; routes deterministically (rule-based, no LLM) and falls back to bge-m3 cosine retrieval.
No parameter schema in public metadata yet.
signature_searchYou know the signature shape (`fn(&str) -> Result<Vec<u8>, _>`); get ranked candidate functions + crate, downloads, yank status.
You know the signature shape (`fn(&str) -> Result<Vec<u8>, _>`); get ranked candidate functions + crate, downloads, yank status.
No parameter schema in public metadata yet.
behavior_lookupA specific `(crate, fn_name)`; get the probe-observation table verbatim — each row `(input, outcome=ok|err|panic, value_or_error)`.
A specific `(crate, fn_name)`; get the probe-observation table verbatim — each row `(input, outcome=ok|err|panic, value_or_error)`.
No parameter schema in public metadata yet.
compare_implementationsA task category (e.g. "base64 crates"); get the side-by-side cross-implementation behavior table.
A task category (e.g. "base64 crates"); get the side-by-side cross-implementation behavior table.
No parameter schema in public metadata yet.
find_modern_equivalentA suspected-deprecated call; get the current canonical alternative + yank/advisory rows.
A suspected-deprecated call; get the current canonical alternative + yank/advisory rows.
No parameter schema in public metadata yet.
Sponsors
Agent CaffeineSponsoredClose your lid, come back to finished work
SnugSponsoredThe clipboard manager for the AI eraPromote your product hereReach 125k+ visitors monthly
WaxSponsoredBlock anything with supervision, without erasing your iPhonePromote your product hereReach 125k+ visitors monthly
knobsSponsoredSee your site on any phone, any day, in any languageReadme
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
Details
- Repository
- github.com/codeitalldev/codeitall
- Website
- api.codeitall.dev/for-ai-agents.html
- Category
- Search & Web Crawling
- Transport
- HTTP
- Registry
- MCP registry, active
Related Search & Web Crawling MCP servers
View all
SocialDataX 小红书 Xiaohongshu XHS RedNote MCPcom.52choujiang/xhs-insightsXHS search/details, PGY, comments/replies, users/ID resolution/posts, transcript0stars
Aibooma - AI Agent Registrysairaj-reddy/aiboomaAI agent registry — search, discover, register, and connect agents via MCP.0stars
AI Dev Jobscom.aidevboard/jobsMCP for 8,700+ current AI jobs. 13 tools: search, match, salaries, companies, commerce quotes.0stars
aNotepadvannet/anotepad-mcpAI access to your aNotepad online notes: read, search, write, and organize via 22 tools.0stars
Arcasos Rentalscom.arcasos/arcasos-rentalsKorean premium short-term rental search: natural language or structured filters (SHV engine).0stars
Atom.com — Premium Domainsatomdomains/atom-mcp-serverSearch, appraise, trademark-check, and buy premium brandable domain names from Atom.com.0stars