Toolapi MCP server

• Registry nameorg.toolapi/hubverified in the MCP registry

The registry name sits under toolapi.org. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-26
• Tools193
• Server calls itselftoolapi-hub
• Server version2.8.2
• Protocol version2024-11-05

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 271 ms.

• Its tools do every use case we checked: validate JSON documents against draft 7 schemas; detect breaking changes between two OpenAPI specs.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP score81 of 100answers 100 · does the job 100 · definitions 67 · context 63 · use 12 · connects 100
• What an agent can do with it2 of 2 use cases
• Use2 GitHub stars
• Answered100% of days10 of 10 daily checks
• Median first answer302 ms
• Space in an agent's context≈ 11,868 tokensthe definitions of all its tools (193), which an agent carries on every turn
• Tool definitionsC · 67 of 100
• Typed results0 of 193 toolsdeclared outputSchema: results come typed, read once

• No description an agent can choose by: 2 of 193
• Parameters without a description: in 184 of 193
• Not saying whether it only reads or can destroy: 193 of 193

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• 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().

The first 60 of 193, as the server listed them.