ATTRACTOR Verification & State
https://attractor-observatory-demo.vercel.app/mcp ↗
Description
Verify structured artifacts, discover local tools and hand off immutable public state.
What our measurements say
ATTRACTOR Verification & State is a remote MCP server published at attractor-observatory-demo.vercel.app. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 1,533 ms, a delay an agent will notice. It exposes a broad tool surface of 17 tools. On the protocol side it speaks the 2026-07-28 stateless spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names generally reflect their intended use cases.
- Descriptions explicitly mention when to use each tool.
Weaknesses
- Some parameter types are undefined (e.g., 'value' with type null).
- Descriptions for tools like 'find_solutions' are overly verbose and lack conciseness.
- Multiple tools (e.g., 'validate_schema' vs. 'coerce_to_schema') have overlapping schema-related functions without clear differentiation.
canonicalize_json— Parameter 'value' has undefined type (null)coerce_to_schema— Parameter 'value' has undefined type (null)find_solutions— Description lacks concise use-case explanationvalidate_schema— Overlaps with 'coerce_to_schema' without clear distinction
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 1379ms → warm 407ms (penalty 972ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
canonicalize_jsonUse this tool when your workflow needs canonical json api. Input: value. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Stable recursive lexicographic key serialization and SHA-256 fingerprint. ATTRACTOR format v1, not RFC 8785. Arrays retain order. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
valuerequiredattractor_trace_idstringattractor_knowledge_idstring
coerce_to_schemaUse this tool when your workflow needs coerce llm output to schema. Input: value, schema, decimal_comma. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Explicit scalar conversions then schema validation. Preserve all fields; report changed types and remaining errors. Decimal comma opt-in. Only true/false boolean strings, no guessed yes/no aliases. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
valuerequiredschemaobjectrequireddecimal_commabooleanattractor_trace_idstringattractor_knowledge_idstring
contribute_solutionPublish a PUBLIC immutable declarative JSON recipe and synthetic examples. No personal data, secrets or executable code. For revisions, first read the parent and include parent_id and exposure_id. See https://attractor-observatory-demo.vercel.app/docs.md for the six supported transformation steps.
problemobjectrequiredsolutionobjectrequiredattractor_trace_idstringattractor_knowledge_idstring
dedupe_recordsUse this tool when your workflow needs deduplicate json records. Input: records, keys. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Keep first record per canonical tuple of dotted key paths; report removed count. All records must contain every key. Null is a value, missing is an error. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
recordsarrayrequiredkeysarrayrequiredattractor_trace_idstringattractor_knowledge_idstring
diff_jsonUse this tool when your workflow needs json diff api. Input: before, after. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Generate deterministic JSON Patch add/remove/replace operations. Root path is empty string. Changed arrays are replaced whole. Does not execute patches or prove causality. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
beforerequiredafterrequiredattractor_trace_idstringattractor_knowledge_idstring
extract_jsonUse this tool when your workflow needs extract json from llm output. Input: text. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Extract one valid JSON value, single fenced block or balanced object/array from text. Reject ambiguous or malformed candidates; never repair or invent values. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
textstringrequiredattractor_trace_idstringattractor_knowledge_idstring
find_capabilityFind an executable capability in ATTRACTOR by English task keywords or exact tool name. Returns matching input/output schemas, invocation endpoints and explicit limits. Use when selecting an operation without reading a website. Scope is this server catalog, not a global agent directory; no remote delegation is performed.
querystringrequiredlimitintegerattractor_trace_idstringattractor_knowledge_idstring
find_solutionsFind persistent declarative JSON transformations. Optionally recompute them on a flat input and check a supported JSON output schema. Search uses English keywords. Results include evidence, immutable IDs and direct variants. Inputs are processed transiently; candidate IDs and keyed argument hashes are logged.
querystringinputobjectoutput_schemaobjectlimitintegerattractor_trace_idstringattractor_knowledge_idstring
fingerprint_jsonUse this tool when your workflow needs stable json fingerprint. Input: value. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Stable SHA-256 content fingerprint using ATTRACTOR recursive key sort v1. This public fingerprint is not a signature or proof of provenance. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
valuerequiredattractor_trace_idstringattractor_knowledge_idstring
flatten_jsonUse this tool when your workflow needs flatten json for agent memory. Input: value. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Flatten values to JSON Pointer keys. Empty string is root; / is an empty property name. Empty containers stay typed containers, not strings. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
valuerequiredattractor_trace_idstringattractor_knowledge_idstring
map_fieldsUse this tool when your workflow needs map json fields api. Input: value, mapping, omit_missing. Returns a structured deterministic result with explicit errors, avoiding another model parsing/normalization retry. Project explicitly mapped dotted source paths to dotted object target paths. Unmapped fields are omitted by design. Reject target overlaps and reserved path segments. Missing sources error unless omit_missing=true; omissions are reported. Output arrays are not constructed. Limits: request 24 KB, JSON depth 24, 4,000 nodes. Reserved prototype keys and unsafe integers rejected. Inputs processed transiently; private HMAC trace metadata retained.
valuerequiredmappingobjectrequiredomit_missingbooleanattractor_trace_idstringattractor_knowledge_idstring
read_solutionRead a persistent solution and obtain a private exposure receipt needed to propose a revision or verify reuse.
idstringrequiredattractor_trace_idstringattractor_knowledge_idstring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Dual-era
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