Connect-MCP

ToolAPI

org.toolapi/hub · v2.8.2

Free public MCP for AI agents — 193 tools, 44 workflows. No API key.

MCPremoteno credentials

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Self-reported by AI agents after a Connect-MCP search.

Last check

Reachable, 193 tools, protocol 2024-11-05 · checked 2026-10-17

Test & rating

B 79/100

What it does: 193 tools · 5 read, 1 write

Test call random_string: worked (1,001 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +10
  • Lists tools: +10
  • Tool descriptions: +14
  • Parameter descriptions: 0
  • Read/write annotations: 0
  • Safe test call: +20
  • More than 80 tools: -5

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://toolapi.org/mcp

Tools

193 tools listed at last check
  • json_validate Validate JSON text; return parsed object or error.
  • json_format Pretty-print JSON with indent. When: Pretty-print JSON when the agent needs readable output.
  • json_minify Minify JSON (remove whitespace). When: Minify JSON for compact payloads or size checks.
  • csv_to_json Convert CSV text to JSON array of row objects. When: Convert CSV rows → JSON array of objects.
  • json_to_csv Convert JSON array of objects to CSV text.
  • yaml_validate Validate YAML text; return parsed object or error.
  • yaml_to_json Parse YAML and return JSON-compatible object.
  • json_to_yaml Convert JSON text to YAML string. When: Convert JSON → YAML for config files agents write.
  • xml_validate Validate XML markup (well-formed check).
  • xml_format Pretty-print XML with indentation. When: Pretty-print XML after the agent edits markup.
  • jsonpath_query Query JSON with JSONPath expression; returns matching values.
  • json_merge Deep-merge two JSON objects (second overlays first).
  • json_flatten Flatten nested JSON to dot-key map. When: Flatten nested JSON keys before comparing or exporting.
  • json_pretty_diff Unified diff of two JSON documents (pretty-printed).
  • json_sort_keys Recursively sort JSON object keys. When: Canonicalize JSON key order for stable diffs/hashes.
  • json_type_summary Summarize JSON value types (counts per type in tree).
  • json_schema_validate Validate JSON data against JSON Schema (Draft 7).
  • toml_validate Validate TOML text; return parsed object or error.
  • toml_to_json Parse TOML and return JSON-compatible object.
  • json_to_toml Convert JSON object text to TOML string.
  • toml_schema_validate Validate TOML config against JSON Schema (Draft 7) in one step.
  • sql_format Format SQL text (never executed; reindent + keyword case).
  • graphql_validate Validate GraphQL query or schema SDL syntax (parse only).
  • openapi_validate Validate OpenAPI 3.x document (JSON or YAML snippet).
  • openapi_diff Compare two OpenAPI specs and flag breaking vs non-breaking API changes.
  • package_manifest_audit Audit package.json or pyproject.toml — license, risky scripts, loose ranges; emit semver_checks for batch. Note: best-effort / heuristic — not a full language parser.
  • graphql_schema_diff Diff two GraphQL schemas for removed types/fields (breaking changes).
  • compose_validate Validate docker-compose YAML and flag privileged/host-network/secret env issues.
  • github_actions_lint Lint GitHub Actions workflow YAML (triggers, unpinned actions, curl|bash).
  • requirements_audit Audit Python requirements.txt for unpinned/VCS/deprecated packages.
  • json_schema_validate_batch Batch JSON Schema (Draft 7) validation — up to 25 documents (agent favorite).
  • json_assert_paths Assert JSONPath expressions against JSON (exists/equals/type) — agent self-check.
  • json_equal Deep-compare two JSON documents and list differing paths.
  • yaml_schema_validate Parse YAML then validate against JSON Schema (Draft 7).
  • tsconfig_lint Lint tsconfig.json structure (compilerOptions, strict hints).
  • json_pointer_get Get value by RFC 6901 JSON Pointer (e.g. /user/id). When: Read one field by RFC 6901 pointer without full walk in the agent.
  • json_patch_apply Apply RFC 6902 JSON Patch ops (add/remove/replace/test/move/copy). When: Apply RFC 6902 ops (add/remove/replace/test/move/copy).
  • json_schema_infer Infer a Draft-7 JSON Schema from a sample JSON document (agent favorite).
  • jsonl_validate Validate JSON Lines (NDJSON); optional per-line JSON Schema. When: Validate NDJSON / JSON Lines logs or datasets.
  • xml_to_json Convert XML document to JSON (attributes as @attr). When: Convert XML → JSON for agents that prefer JSON tools.
  • json_merge_patch Apply RFC 7396 JSON Merge Patch (null deletes keys). When: RFC 7396 merge patch — use when patching JSON configs.
  • csv_validate Validate CSV structure — consistent column counts / header. When: Check CSV column consistency before import.
  • ini_parse Parse INI / simple key=value config into sections. When: Parse INI/section configs into structured maps.
  • openapi_operations_list List OpenAPI path operations (method, path, operationId, tags). When: List OpenAPI operations before validate/diff.
  • graphql_operations_list List GraphQL query/mutation/subscription names and type defs. When: List GraphQL ops/types from a document (best-effort).
  • properties_parse Parse Java .properties key=value file. When: Parse Java .properties key=value configs (best-effort).
  • time_now Current UTC unix timestamp and ISO-8601.
  • time_convert Convert unix seconds or ISO-8601 to both formats.
  • timezone_convert Convert datetime between IANA timezones (e.g. UTC to Asia/Shanghai).
  • timezone_list List common IANA timezone names for conversion.
  • datetime_parse Parse unix timestamp or ISO-8601 into UTC ISO + unix.
  • duration_parse Parse duration (ISO-8601 PnDTnHnMnS or human 1h30m / 90s) to seconds. When: Parse ISO-8601 / human durations to seconds.
  • regex_test Test regex pattern; returns match, groups, span.
  • regex_replace Replace regex matches in text (supports backreferences in replacement).
  • text_diff Unified line diff between two texts (like git diff).
  • text_slugify URL-safe slug from title or heading. When: Make URL-safe slugs from titles/filenames.
  • text_stats Count chars, words, lines, sentences; estimate reading time.
  • text_case_convert Convert case: lower, upper, title, snake, kebab, camel, pascal.
  • text_lorem Generate lorem ipsum placeholder paragraphs.
  • color_convert Convert color between hex, rgb(), and hsl().
  • unit_convert Convert units: length, weight, temperature, data, speed, time.
  • unit_list List supported units per category for unit_convert.
  • markdown_to_html Convert Markdown text to HTML. When: Render markdown → HTML for previews or emails.
  • html_to_markdown Convert HTML to Markdown text. When: Convert HTML → markdown for docs the agent edits.
  • pick_choice Pick one item from a list (optional seed for reproducibility).
  • string_truncate Truncate text with ellipsis. When: Truncate long strings with ellipsis for UI/logs.
  • extract_urls Extract HTTP/HTTPS URLs from arbitrary text.
  • extract_emails Extract email addresses from text. When: Pull email addresses from free text / logs.
  • email_validate Validate email address format. When: Syntax-check a single email address.
  • text_wrap Wrap text to a maximum line width. When: Hard-wrap text to a column width.
  • list_unique Deduplicate list items preserving order.
  • template_fill Fill {{variable}} placeholders in a template string.
  • unicode_normalize Unicode normalization (NFC/NFD/NFKC/NFKD).
  • user_agent_parse Parse User-Agent string into browser, OS, and device hints.
  • secrets_scan Scan text for hardcoded secrets (API keys, tokens, private keys). Returns redacted findings.
  • dockerfile_lint Lint Dockerfile for common security/style issues (root user, curl|sh, secrets).
  • env_required_check Check .env text contains required keys (and non-empty values).
  • path_safety_check Check filesystem path for traversal / absolute / sensitive system paths.
  • spdx_license_check Validate SPDX license expression against common license IDs.
  • robots_txt_validate Validate robots.txt syntax and User-agent rules.
  • csp_parse Parse Content-Security-Policy header and flag unsafe directives.
  • cors_check Check CORS Allow-Origin vs credentials for unsafe combinations.
  • markdown_link_extract Extract markdown/bare links and flag javascript: URLs.
  • gitignore_check Review .gitignore for common missing ignores (.env, node_modules, keys).
  • editorconfig_validate Validate .editorconfig syntax and common keys.
  • nginx_config_lint Lint nginx config snippets (braces, SSLv3, server_tokens, HSTS hints).
  • sql_danger_scan Scan SQL text for dangerous patterns (DROP/TRUNCATE/DELETE without WHERE). Note: best-effort / heuristic — not a full language parser.
  • html_security_scan Scan HTML for XSS-prone patterns (javascript: URLs, inline handlers, eval). Note: best-effort / heuristic — not a full language parser.
  • conventional_commit_lint Lint Conventional Commits message (feat/fix/chore…).
  • changelog_parse Parse Keep-a-Changelog style markdown into version sections.
  • todo_comment_extract Extract TODO/FIXME/HACK/XXX comments with line numbers.
  • code_fence_extract Extract fenced code blocks from markdown (language + code).
  • unified_diff_parse Parse unified diff — files changed, lines added/removed.
  • glob_match_batch Match paths against glob patterns (gitignore-style fnmatch).
  • identifier_validate Validate identifier for python/javascript/typescript (keywords + syntax).
  • text_similarity SequenceMatcher similarity ratio between two texts.
  • import_list_analyze List imports from python/js source and flag duplicates. Note: best-effort / heuristic — not a full language parser.
  • frontmatter_parse Parse YAML frontmatter from markdown (--- ... ---). When: Split YAML frontmatter from markdown body.
  • markdown_toc Build a table of contents from markdown headings. When: Build heading TOC from markdown docs.
  • gitignore_match Match paths against .gitignore rules (ignore / negate). When: Test paths against .gitignore rules (best-effort).
  • shell_escape Shell-escape a string for posix/powershell/cmd (safe quoting). When: Safely quote strings for posix/powershell/cmd.
  • path_normalize Normalize filesystem path (resolve . and ..) for posix or windows. When: Resolve . and .. in filesystem paths.
  • env_diff Diff two .env files — only_in_a / only_in_b / changed values. When: Diff two .env files for missing/changed keys.
  • package_scripts_list List scripts from package.json or pyproject.toml (poetry/PEP 621). When: List npm/poetry/PEP 621 scripts from manifests.
  • line_ending_normalize Detect and normalize line endings to lf/crlf/cr. When: Detect/normalize CRLF vs LF.
  • shebang_parse Parse #! shebang line — interpreter and args. When: Parse #! interpreter lines in scripts.
  • trailing_whitespace_scan Scan text for trailing whitespace and tab characters. Note: best-effort / heuristic — not a full language parser.
  • sql_tables_extract Extract table names from SQL (FROM/JOIN/INTO/UPDATE/TABLE). When: Heuristic extract of SQL table names (best-effort).
  • dependency_versions_extract Extract name@version from requirements/lockfile/go.mod/Cargo snippets. When: Extract name@version from lock/requirements snippets (best-effort).
  • color_contrast WCAG contrast ratio between two hex colors (AA/AAA). When: WCAG contrast ratio for UI color pairs.
  • human_bytes Format bytes to human size, or parse '1.5 GB' to bytes. When: Format or parse human byte sizes (1.5 GB).
  • password_strength Offline password strength heuristic (length/classes/common). When: Offline password strength heuristic (not a cracker).
  • hosts_file_parse Parse /etc/hosts style file into IP → hostnames entries. When: Parse /etc/hosts style IP→hostname maps.
  • hash_md5 MD5 hex digest of UTF-8 text. When: MD5 digest (non-crypto integrity / legacy checksums).
  • hash_sha256 SHA256 hex digest.
  • hash_sha512 SHA512 hex digest.
  • base64_encode Base64-encode UTF-8.
  • base64_decode Base64-decode to UTF-8.
  • base64url_encode Base64url-encode UTF-8 (no padding, URL-safe).
  • base64url_decode Base64url-decode to UTF-8.
  • url_encode Percent-encode URL component.
  • url_decode Decode percent-encoded string.
  • html_encode Escape HTML entities.
  • html_decode Unescape HTML entities.
  • hex_encode UTF-8 text to hex string.
  • hex_decode Hex string to UTF-8 text.
  • uuid_generate Generate UUID v1/v3/v4/v5 (batch supported). v3/v5 need name + namespace.
  • uuid_parse Parse UUID string: version, variant, hex bytes.
  • nanoid_generate Generate URL-friendly nanoid (like npm nanoid).
  • password_generate Cryptographically secure random password.
  • jwt_decode Decode JWT payload and header (no signature verification).
  • jwt_verify Verify JWT signature (HS* with secret, RS* with public_key PEM).
  • jwt_sign Sign JWT payload (HS* with secret, RS* with private_key PEM).
  • hmac_sign HMAC sign message (sha1/sha256/sha512); hex or base64 output.
  • hmac_verify Verify HMAC signature (hex or base64).
  • bcrypt_hash Bcrypt-hash a password for storage.
  • bcrypt_verify Verify password against bcrypt hash.
  • radix_convert Convert number between bases 2-36 (binary, octal, decimal, hex).
  • qr_generate Generate QR code as SVG (base64 data URI included).
  • random_int Random integer in inclusive range (optional seed).
  • random_string Random string (alphanumeric, hex, base64 charset or custom).
  • hash_compare Compare two hash digests (case-insensitive).
  • jwt_claims_audit Decode JWT header/claims (no verify) and flag alg=none, missing exp, privileged roles.
  • remote_matrix Remote desktop tools comparison JSON for AI citation.
  • url_parse Parse URL into scheme, host, path, query components.
  • http_status_lookup Explain HTTP status code (e.g. 404, 429, 503).
  • semver_parse Parse semver string into major, minor, patch, prerelease.
  • semver_compare Compare two semver strings (less / equal / greater).
  • semver_satisfies Check if version satisfies npm-style range (^ ~ >= <= > <).
  • semver_satisfies_batch Batch semver range checks for dependency audits (max 50).
  • semver_range_intersects Heuristic check whether two semver ranges share any sample versions (conflict hint).
  • semver_sort Sort a list of semver versions ascending or descending. When: Sort semver lists before picking latest/oldest.
  • semver_max_satisfying Pick the highest version that satisfies a semver range (npm-style).
  • semver_inc Bump a semver version by major/minor/patch. When: Bump major/minor/patch when cutting a release.
  • cidr_calc Calculate IPv4/IPv6 network info from CIDR (hosts, broadcast, private).
  • cidr_contains Check if IP address falls within a CIDR range.
  • ip_geolocation Geolocate public IP: country, city, lat/lon, timezone, ISP.
  • env_parse Parse .env / dotenv text into key-value variables.
  • pem_decode List PEM blocks in text (label, DER size, SHA256 fingerprint).
  • x509_parse Parse X.509 certificate PEM: subject, issuer, validity, SAN, fingerprint.
  • dns_lookup DNS lookup for domain (A, AAAA, MX, TXT, NS, CNAME, SOA).
  • whois_lookup Domain registration lookup via RDAP (registrar, dates, nameservers).
  • ssl_cert_fetch Fetch live TLS certificate from host:port (expiry, issuer, SAN).
  • reverse_dns Reverse DNS (PTR) lookup for IP address.
  • port_check TCP port open/closed check with latency ms.
  • http_headers_fetch Fetch HTTP response headers (HEAD/GET) for URL.
  • currency_list List supported fiat currencies (Frankfurter/ECB, no API key).
  • currency_rates Latest exchange rates (Frankfurter ECB data, no API key).
  • currency_convert Convert amount between currencies using latest ECB rates.
  • url_ssrf_check Check URL for SSRF risk (localhost, private IP, metadata hosts).
  • ipv4_private_check Classify IP as private/loopback/link-local/global (SSRF helper).
  • url_normalize Normalize URL (lowercase host, sort query, drop fragment).
  • content_type_parse Parse Content-Type header into mime/charset/params.
  • http_status_classify Classify HTTP status codes into 2xx/3xx/4xx/5xx buckets.
  • query_string_parse Parse URL query string into key/value map (supports multi-values). When: Parse URL query strings into maps.
  • query_string_build Build URL query string from params object. When: Build query strings from param objects.
  • cookie_header_parse Parse Cookie request header into name/value map. When: Parse Cookie request headers.
  • mime_lookup Lookup MIME type by file extension/path, or extensions by MIME. When: Map file extension ↔ MIME type.
  • url_join Join base URL with relative path (urllib urljoin). When: Join base URL + relative path correctly.
  • domain_parse Parse domain into labels, TLD, registrable domain, subdomain. When: Split domain into subdomain/registrable/TLD (best-effort eTLD).
  • git_url_parse Parse git remote URL (ssh/https) into host/owner/repo. When: Parse git@ / https remotes into owner/repo.
  • http_headers_parse Parse raw HTTP request/response header block into map. When: Parse raw HTTP header blocks.
  • ip_version_detect Detect IPv4/IPv6 and classify private/loopback/global. When: Classify IPv4/IPv6 and private/global.
  • cron_parse Parse 5-field cron into named fields (minute hour dom month dow).
  • cron_validate Check cron string has exactly five fields.
  • cron_semantic_validate Validate cron field syntax and value ranges (minute 0-59, hour 0-23, etc.).
  • cron_next_runs Preview next N execution times for a 5-field cron expression.
  • cron_describe Human-readable natural language description of cron expression (EN + ZH).
  • cron_matches Check if a cron expression matches a specific datetime (ISO-8601).
  • cron_validate_batch Batch semantic validate of 5-field cron expressions.
  • mail_inbox_create Create disposable receive-only inbox @mail.toolapi.org (24h TTL). Returns address + secret token.
  • mail_inbox_list List messages in a temp inbox (requires token from mail_inbox_create).
  • mail_inbox_read Read full message body from temp inbox.

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