API Acre MCP Server

by apiacre Your server? Claim it

answering

API Acre is answering right now. Last checked 1 min ago. It exposes 75 tools.

75 x402-paid Base and Solana APIs with free discovery, samples, workflows, and Pixel Acre.

Uptime history 91 days of history · worst day 89%

91 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

291 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 149

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 August 2026. No other catalogue keeps this.

30 Oct 2 tools appeared research.nih-grant-search, research.ror-organization-search

30 Oct a tool changed version

1 Sep a tool changed the parameters it asks for data.schemaorg-normalize

29 Aug 3 tools appeared research.crossref-doi-metadata, research.crossref-work-search, research.wikidata-organization-search

29 Aug a tool changed version

22 Aug 2 tools changed the parameters they ask for data.current-weather, data.us-weather-forecast

21 Aug 3 tool descriptions were rewritten developer.secret-scan, web.business-due-diligence, web.seo-audit

20 Aug a tool appeared data.current-weather

20 Aug a tool changed version

19 Aug a tool changed version2 times that day

and 133 more, back to 10 August 2026

Nothing serious here today

Today is the operative word: we check API Acre every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add api-acre --transport http https://apiacre.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://apiacre.com/mcp

~/.codex/config.toml

[mcp_servers.api-acre]
url = "https://apiacre.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "api-acre": {
      "url": "https://apiacre.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "api-acre": {
      "type": "http",
      "url": "https://apiacre.com/mcp"
    }
  }
}

Available tools 75

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

data

data.clean

Clean CSV, TSV, JSON, JSON Lines, or YAML records with collision-safe header normalization, deterministic integrity hashes, and exact transformation counts.

data.contract

Normalize caller-supplied CSV, TSV, JSON, JSON Lines, or YAML to deterministic JSON, infer a Draft 2020-12 schema from that normalized value, and validate one future JSON value in a single x402 call.

data.convert

Convert caller-supplied CSV, TSV, JSON, JSON Lines (NDJSON), or YAML with optional root preservation, deterministic integrity hashes, JSON-encoded nested tabular cells, and explicit rejection of ambiguous duplicate keys or non-finite numbers.

data.current-weather

Get one current weather snapshot for a city/locality name or exact coordinates. Returns the nearest NOAA/NWS station observation where available; otherwise returns the latest MET Norway model point, always labeled explicitly as observation or model with bounded SI fields and source provenance.

data.deduplicate

Remove duplicate CSV, TSV, JSON, JSON Lines, or YAML records using selected identity fields and report the removed count.

data.ecb-fx-reference

Convert an amount between two supported currencies using one validated ECB daily reference-rate observation. The underlying ECB statistics are available free from the ECB Data Portal; the fee covers bounded retrieval, validation, clearly labelled cross-rate calculation, and x402 delivery.

data.json-repair

Repair caller-supplied malformed JSON by safely removing an outer Markdown fence, comments, single-quoted strings, unquoted identifier keys, Python literals, and trailing commas, with transformation hashes and strict rejection of duplicate keys or non-finite numbers.

data.place-geocode

Resolve one global city or locality name into bounded, population-ranked GeoNames coordinates, country and first-level-region identity, population, timezone, feature code, and source freshness without a request-time network call.

data.profile

Profile CSV, TSV, JSON, JSON Lines, or YAML records for field types, nulls, uniqueness, and representative samples.

data.reverse-geocode

Resolve one latitude/longitude pair into bounded, great-circle-distance-ranked nearby GeoNames populated places with country, first-level region, population, timezone, feature code, and source freshness without a request-time network call.

data.schema

Create and generate a nested JSON Schema Draft 2020-12 contract by inferring field types and required fields from representative JSON, CSV, TSV, JSON Lines, or YAML records, with equivalent CSV/TSV numeric and null inference, input evidence, and non-enforcing observed bounds.

data.schema-validate

Validate JSON data against a bounded JSON Schema Draft 2020-12 contract for nested objects, arrays, required properties, types, enums, formats, lengths, patterns, and numeric bounds; return deterministic instance and schema JSON Pointers, explicit error truncation, input hashes, and no remote reference resolution.

data.schemaorg-normalize

Normalize caller-supplied inline Schema.org JSON-LD into deterministic Organization, Product, Service, Article, and Event entities with privacy scrubbing and field-level evidence hashes.

data.timezone-convert

Convert an offset-aware ISO 8601 instant or a local wall time between IANA time zones with explicit DST gap and repeated-hour handling, nearby transition evidence, and a pinned local time-zone database.

data.us-address-geocode

Geocode one structural address in the United States, Puerto Rico, or U.S. Island Areas with normalized U.S. Census MAF/TIGER coordinates, optional bounded state/county/tract/block/congressional geography, exact source attribution, and explicit range-interpolation limits.

data.us-weather-forecast

Get a global weather forecast for a city/locality name or exact coordinates. Returns normalized day/night or hourly periods worldwide: NOAA/NWS is preferred within supported U.S. coverage for optional station conditions and active alerts, while MET Norway provides an attributed open-data fallback globally.

data.vin-decode

Decode a full 17-character VIN into normalized NHTSA vPIC make, model, year, body, engine, transmission, plant, fuel, and occupancy fields with official source evidence and explicit missing-data semantics.

data.worldbank-snapshot

Bundle six official World Development Indicators into one normalized country snapshot with latest and previous GDP, growth, population, inflation, unemployment, and life-expectancy observations plus source and license evidence.

research

research.crossref-doi-metadata

Resolve one DOI into normalized open Crossref bibliographic, author, container, citation-count, license, identifier, and correction or retraction-link metadata without abstracts or full text.

research.crossref-work-search

Search open Crossref bibliographic metadata by title, author, DOI fragment, or citation and return bounded normalized publication, author, citation, license, and update metadata without abstracts or full text.

research.federal-register-search

Search newest U.S. Federal Register document metadata by topic, agency, type, and publication date, returning bounded regulatory notices, rules, proposed rules, presidential documents, and links to FederalRegister.gov and official govinfo.gov PDFs.

research.feed-normalize

Fetch and normalize public RSS or Atom feeds into stable structured JSON entries for agents and research workflows.

research.lei-entity-search

Search the official GLEIF Global LEI Index by exact LEI or legal name and return ranked legal-entity identity, registration, mapped-identifier, and relationship-availability evidence.

research.news-aggregate

Merge two to eight public RSS or Atom feeds into a filtered, deduplicated, time-ordered news stream with bounded partial-failure reporting.

research.nih-grant-search

Search official NIH RePORTER research-award administrative metadata by topic, institution and fiscal year. Returns bounded project and annual award amounts, dates, investigators, organization identifiers and official project links, with source hashes and explicit limits; abstracts and contact details are excluded.

research.ofac-entity-search

Compare a business or organization name with separately named Entity records and aliases in the official OFAC SDN and Consolidated Non-SDN files, returning deterministic candidate scores, program tags, source hashes, and freshness evidence without issuing an allow or block verdict.

research.organization-evidence

Retrieve a current supplier and organization evidence report from official GLEIF legal-entity, USAspending prime-contract, SEC filing-activity, and OFAC Entity records, with bounded source-specific coverage for procurement research and no identity, linkage, risk, or compliance verdict.

research.ror-organization-search

Search official ROR research-organization metadata by name, resolve an exact ROR ID, or match an affiliation using ROR's own chosen flags and scores. Returns bounded institution names, identifiers, GeoNames locations, relationships, source hashes and CC0 attribution without issuing an identity verdict.

research.sec-company-evidence

Resolve an exact SEC company name, ticker, or CIK, then bundle recent filing signals, normalized issuer-reported XBRL facts, and Form 4 insider transactions into one bounded public-company evidence report with explicit section coverage and official-source provenance.

research.sec-filing-signals

Look up a public company by ticker or CIK, normalize recent SEC filings, and flag deterministic events such as late filings, amendments, auditor changes, non-reliance, control changes, or bankruptcy disclosures.

research.sec-financial-facts

Retrieve normalized, recent issuer-reported revenue, earnings, balance-sheet, cash-flow, and diluted-EPS facts from official SEC XBRL data.

research.sec-insider-transactions

Retrieve recent SEC Form 4 officer, director, and 10% beneficial-owner trades for a ticker or CIK, including purchases, sales, awards, exercises, tax withholding, prices, holdings, 10b5-1 context, derivatives, and filing footnotes.

research.us-contract-search

Search public USAspending prime federal procurement awards by recipient company or organization name, UEI, or legacy DUNS, returning bounded contract values, agencies, performance dates, descriptions, official award links, and explicit interpretation limits.

research.wikidata-organization-search

Search CC0 Wikidata organization candidates and normalize public websites, inception dates, company identifiers, entity types, countries, industries, headquarters, parent, founder, owner, subsidiary, and product links with explicit non-verification caveats.

crypto

crypto.address-inspect

Validate and normalize an Ethereum or EVM wallet address, distinguish valid, absent, or invalid ERC-55 checksum casing, and identify the zero address without a network request.

crypto.base-account-snapshot

Read point-in-time ETH, native USDC, and up to four caller-selected ERC-20 balances plus account nonce and contract-code status at one resolved Base mainnet block.

crypto.base-account-status

Check one Base mainnet wallet or contract for ETH and official USDC balances, transaction nonce, and contract-bytecode evidence at a single resolved block.

crypto.base-block-inspect

Get and inspect one historical Base mainnet block by exact number or a latest, safe, or finalized tag, returning its header timestamp, transaction count, gas use, base and blob fees, state and receipt roots, confirmations, and head-distance evidence.

crypto.base-contract-inspect

Inspect Base mainnet contract bytecode, common token metadata, and ERC-165, ERC-721, and ERC-1155 interface signals at one resolved block.

crypto.base-contract-read

Execute one bounded read-only eth_call against a resolved Base mainnet block, retain call and block evidence, and optionally decode caller-specified ABI output types.

crypto.base-event-logs

Query validated eth_getLogs events from one Base mainnet contract using a required event signature and optional indexed topic filters across a bounded resolved block range.

crypto.base-gas-estimate

Estimate gas for one Base mainnet transaction context at a resolved block, add a bounded caller-selected buffer, and preserve RPC rejection evidence without signing or broadcasting.

crypto.base-network-status

Read the latest Base mainnet block and a bounded EIP-1559 fee history in one RPC batch, including gas utilization and priority-fee percentile samples.

crypto.base-transaction-inspect

Inspect Base transaction status and receipt evidence in one call, including success, revert, or pending state, confirmations, actual gas fee, recognized calldata, bounded ERC-20-shaped transfers, and official Base USDC recognition for payment confirmation.

crypto.base-usdc-transfers

Retrieve newest-first incoming and outgoing Circle USDC Transfer events for one address across a validated, bounded Base mainnet block range.

crypto.calldata-decode

Resolve 29 common ERC-20, ERC-165, ERC-721, ERC-1155, ERC-2612, and ERC-3009 selectors without a network lookup, or strictly decode arbitrary Ethereum or EVM calldata using a supplied Solidity signature.

crypto.typed-data-hash

Validate EIP-712 typed structured data and derive its domain separator, message hash, and signing digest.

web

web.accessibility-audit

Check a public page for deterministic HTML accessibility problems and return actionable WCAG-oriented findings.

web.business-due-diligence

Assess one public business website and domain using site quality, SEO, security, accessibility, performance, DNS, TLS, RDAP, and optional public GLEIF candidates; return technical evidence and explicit identity, ownership, compliance, and vendor-approval limitations.

web.domain-intelligence

Investigate a domain using parallel DNS, TLS certificate, RDAP (the standards-based successor to WHOIS), DNSSEC, SPF, and DMARC signals with factual findings and source provenance.

web.email-auth

Check a public domain's email authentication and anti-spoofing posture using MX, SPF, DMARC, caller-selected DKIM, MTA-STS, TLS-RPT, and BIMI DNS evidence.

web.extract

Convert and extract a public website URL into clean Markdown or readable text plus bounded structured links, canonical and heading signals, Schema.org types, redirect evidence, content hashes, and response provenance for RAG, research, or agent context.

web.full-audit

Run a comprehensive website audit combining SEO, security, accessibility, and performance scores with prioritized fixes.

web.links

Extract and classify links from one public page or safely crawl up to 10 same-origin pages into an agent-ready site map with page provenance, depth limits, and robots.txt enforcement.

web.metadata

Extract webpage metadata from one public URL: page title, meta description, canonical URL, headings, hreflang, icons, feeds, Open Graph, Twitter Cards, and JSON-LD Schema.org types, with redirect and response provenance plus privacy-safe, publisher-asserted Organization facts with field evidence.

web.performance-profile

Measure website response latency, payload size, compression, caching, and performance signals for a public URL.

web.robots-sitemap

Inspect a domain's robots.txt crawl rules and XML sitemap health, availability, and URL count.

web.security-audit

Scan a public website for TLS and browser security header weaknesses and return a security score with fixes.

web.seo-audit

Audit one public URL for title, meta description, H1 count, image alt text, canonical, robots, language, Open Graph, Twitter cards, headings, hreflang, feeds, and Schema.org data; return a deterministic score and prioritized issue codes.

web.tech-fingerprint

Identify frameworks, analytics, CDNs, servers, and other website technologies from public response signals.

developer

developer.code-change-review

Compare caller-supplied before and after source snapshots without execution or network access, returning source fingerprints, syntax regressions, structural deltas, function-level changes, and bounded review findings.

developer.code-metrics

Measure caller-supplied source code with Python AST analysis or a deterministic lexical fallback, including per-function complexity, a SHA-256 fingerprint, density ratios, syntax status, and actionable maintainability signals without retaining or forwarding the code. One bounded no-wallet trial is available through the separate HTTP endpoint https://apiacre.com/trials/developer.code-metrics; this MCP tools/call operation remains paid.

developer.dependency-audit

Audit exact Python/PyPI, npm, Go, Maven, NuGet, crates.io, or RubyGems dependencies against OSV and return affected packages and vulnerabilities.

developer.license-audit

Classify software dependency licenses and flag packages that need commercial or legal review.

developer.openapi-audit

Validate and audit an OpenAPI document for missing operation IDs, descriptions, responses, and consistency problems.

developer.openapi-test-generate

Generate deterministic, syntax-validated pytest and requests smoke tests from a caller-supplied OpenAPI 3 document, with mutating operations disabled by default.

developer.secret-scan

Detect likely leaked API keys, tokens, private-key headers, JWTs, and credential assignments in caller-supplied source or configuration text. Return type, line, fingerprint, and a fully redacted preview with no network access or code execution.

developer.sql-change-review

Statically parse caller-supplied SQL without a database connection or execution, inventory statements and tables, and flag destructive DDL, unfiltered writes, and migration atomicity concerns.

developer.structured-diff

Compare JSON or YAML deterministically and return source hashes plus machine-readable additions, removals, and replacements by path with explicit truncation evidence.

developer.x402-preflight

Probe a public endpoint without paying, grade its x402 v2 challenge, check exact-host x402-list presence and traction, and optionally rank licensed market matches with buyer-concentration caveats.

document

document.diff

Compare two texts and return structured line additions, removals, and a unified diff.

document.extract

Extract clean text and metadata from supplied PDF, DOCX, HTML, Markdown, CSV, JSON, YAML, or plain-text documents.

document.redact

Deterministically detect and redact PII and personal data in supplied text with overlap-safe matching for emails, phone numbers, validated IPv4 and IPv6 addresses, Luhn-valid payment cards, valid-checksum IBANs, and structurally valid US Social Security numbers.

document.tables

Extract structured table rows and columns from supplied HTML, DOCX, or CSV documents.

commerce

commerce.product-price

Paste one public retailer product URL to get its current publisher-supplied structured price, currency, availability, seller, shipping terms, aggregate rating, variant attributes, identifiers, observation time, and evidence hashes from Schema.org JSON-LD, Schema.org microdata, or paired product meta tags; optionally compare the selected offer with a buyer-supplied maximum. Fetching proceeds only when robots.txt permits it, without JavaScript, login, cookies, or anti-bot bypass.

Endpoints

URL	Transport	State	Latency	Checked
https://apiacre.com/mcp	streamable-http	answering	267 ms	1 min ago

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API Acre — questions

Answers built from our own checks of this server.

What can API Acre do?

It exposes 75 tools, read directly from the server on our last check. Among them: commerce.product-price, crypto.address-inspect, crypto.base-account-snapshot, crypto.base-account-status, crypto.base-block-inspect, crypto.base-contract-inspect and 69 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is API Acre mostly used for?

Its tools cluster around data, research and web. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is API Acre working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 291 ms. The bar chart above shows every period we have measured.

How do I connect API Acre?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does API Acre need an API key?

No. API Acre completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 75 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is API Acre?

It answers our handshake in 291 ms on average, which is faster than 47% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.